JP3454423B2 - Coated carbide coated tool parts for coating equipment and coated coated hard metal coated tool parts - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cemented carbide coating tool component for a coating apparatus represented by a nozzle or a die mainly used for an apparatus for injecting a liquid containing a solid powder, and its coating. Regarding cemented carbide coated tool parts, specifically, a mixture of an inorganic substance and an organic substance is present on the surface of an object to be coated represented by a support such as plastic, paper, metal foil, metal plate and glass. Typical coating tool parts called die coaters, coater dies, lip coaters and doctor edges, which are installed in a coating device for coating a coating liquid consisting of a liquid substance and discharge the coating liquid. And a coated tool part made of cemented carbide. In particular, the present invention relates to a film such as paper or plastic, a disk,
Solution containing magnetic particles such as ferrite, solution containing particles of photographic light-sensitive material such as silver halide, solution coated on the surface of paper such as copy paper, etc. A coating of cemented carbide for a coating device, which is provided in a device for coating a coating liquid represented by the above, to form a coating film, and having a structure such that the coating film is coated. The present invention relates to a coated tool component and a coated cemented carbide coated tool component thereof.

[0002]

2. Description of the Related Art Conventionally, a heat-sensitive film is formed on the surface of an object to be coated,
Various coatings typified by a conductive film, a low-reflection conductive film, an ultraviolet protection film, an electromagnetic wave protection film, a protective film or a magnetic film have been coated. Among these, for video,
Film for audio, disk, sheet, tape,
A magnetic recording medium typified by a drum is coated on the surface of an object to be coated such as plastic by a coating device such as a roll coat, a gravure coat, a roll doctor coat, an extrusion coat, and a slide beat coat. A coating film containing magnetic particles is applied. There is a coating tool component which is installed in these coating devices and has a structure in which a coating liquid for forming a coating film is discharged by pressure injection or the like.

Among these coating tool parts, the coating liquid is uniformly applied to a continuously traveling object to be coated while adjusting and controlling the outflow amount of the coating liquid mainly by the coating tip. There is a coating tool part to be coated with. The coating tip of this coating tool component is required to have shape accuracy, surface accuracy, and sharp edge without spill, and at the same time, frictional wear due to hard dispersed particles made of inorganic substance in the coating liquid, resin and solvent. Corrosion due to various additives such as abrasion resistance, corrosion resistance against chemical corrosion (mainly erosion-like corrosion) and electrical corrosion (mainly erosion-like corrosion),
Improvement of lubricity is desired.

Therefore, in recent years, the use of cemented carbide for the coating tip or proposals related thereto have been made. However, even when the conventional cemented carbide is used for the coating tip, the transition to high-speed coating and the transition of various additives such as resins and solvents and hard dispersed particles have been made compared to the beginning of development. In addition, with a change in the structure of the coating film that coats the coating film in layers and the transition of the device, a configuration having a plurality of slits, or a configuration in which a plurality of coating tool parts are used in one step Therefore, there is a problem that the wear resistance and the corrosion resistance are not satisfactory and the life is short. A typical example proposed in order to improve these problems is JP-A-57-847.
71, JP-A-2-265673, JP-A-2
-265674 and JP-A-6-114316.

[0005]

Among the prior arts in which a cemented carbide is applied to a coated tool component, JP-A-57-84771 is known.
Japanese Patent Laid-Open Publication No. 2004-242242 discloses a coating device equipped with a coating tool component made of a cemented carbide having a hardness of 88 or more on the Rockwell A scale and having a doctor edge (a portion corresponding to the coating tip). . Further, JP-A-2-265674 discloses that the Co content is 15% by weight or less and the hardness is 83 HRA.
Disclosed is a coating apparatus equipped with a coating tool component having a doctor edge of cemented carbide of ~ 89 HRA. When the cemented carbide disclosed in both of these publications is used for the coating tip,
Although wear resistance and corrosion resistance are improved compared to conventional steel coating tips, the influence of changes in coating speed and coating liquid, and especially magnetic particles and hard ceramics in the coating liquid. Particles, diamond-like carbon particles, and other high-hardness substances, when the coating liquid flows out from the coating tip, ablation wear due to the high-hardness substances in the coating liquid and fatty acids and sulfur Corrosion and abrasion due to the contained organic substances cause minute damage to the coating tip portion, and as a result, the smoothness of the surface of the coating film coated on the object to be coated deteriorates, making it impractical.

Japanese Unexamined Patent Publication (Kokai) No. 2-265673 cited as the prior art of the present invention discloses that W having an average particle size of 1.5 μm or less.
Disclosed is a cemented carbide composed of C and Co, or a coating device equipped with a doctor edge made of cemented carbide to which carbides of Ti, Ta, and Nb having an average particle size of 5 μm or less are added, if necessary. There is. Although the cemented carbide disclosed in the publication is good in terms of surface accuracy and sharpness, it does not satisfy the corrosion resistance and has the same slipperiness with the object to be coated and the coating solution as described above ( Lubrication) is inferior and the life is shortened. Furthermore, in Japanese Patent Laid-Open No. 6-114316, W
A coating device having a doctor edge made of a cemented carbide containing a Co binding phase containing 0.5 to 1.0% of Cr with respect to C is disclosed. Although the corrosion-resistant cemented carbide disclosed in the above publication has improved corrosion resistance due to the binder phase containing Co in Cr, it has a short life due to the synergistic effect of corrosion and frictional wear and abrasion wear. That is, it is difficult to obtain stable quality and stable life cannot be obtained.

The present invention has solved the above-mentioned problems. Specifically, an optimum solid solution element is solid-dissolved in the binder phase in a cemented carbide composed of a hard phase and a binder phase, And by making the particle size distribution of the tungsten carbide uniform, by uniformly dispersing and uniformly mixing the tungsten carbide and the binder phase, and by eliminating the unevenness of the binder phase distribution, strength, hardness, toughness, wear resistance, lubricity is improved, In addition to improving impact resistance and microdefect resistance, the bonding phase in which solid-solution elements are solid-dissolved largely improves the corrosion resistance, chemical resistance and electrical corrosion resistance, wear resistance and lubricity of the coating liquid. Improve
Increase the surface roughness of the coating film surface formed on the object to be coated,
An object of the present invention is to provide a cemented carbide coated tool component for a coating device and a coated cemented carbide coated tool component for which a long life has been achieved by suppressing streaky defects on the surface of the coated film as much as possible. It is a thing.

[0008]

Means for Solving the Problems The inventors of the present invention have studied the extension of the life of cemented carbide coating tool parts provided in a coating device. When a cemented carbide consisting of a hard phase composed mainly of tungsten carbide and a binder phase is used, the life is greatly affected by the distribution state of the binder phase and the hard phase and the compositional components of the binder phase, especially the micro resistance. The grain size of tungsten carbide is adjusted to increase the defectivity, the grain size distribution is made uniform, and the hard phase and the binder phase are uniformly dispersed and mixed together, and a specific solid solution element is dissolved in the binder phase. By doing so, the uneven distribution of the hard phase and the binder phase will be eliminated, the corrosion resistance to the resin and organic solution in the coating liquid will be improved, and the synergistic effect of these will increase the strength, hardness, toughness, and wear resistance. , Can improve lubricity, To obtain a finding that the purpose is achieved, in which the present invention has been completed.

The cemented carbide coating tool for a coating apparatus of the present invention thus completed is provided in a coating apparatus so that a coating film can be coated on the surface of an object to be coated. It is a designed coating tool component, wherein the coating tool component has a coating tip for coating the coating film, and at least the coating tip of the coating tool component is cemented. A hard phase 84 comprising an alloy, the cemented carbide being tungsten carbide or tungsten carbide and at least one cubic structure compound selected from carbides of groups 4a, 5a and 6a of the Periodic Table and mutual solid solutions thereof. ˜98% by weight, and a binder phase 2-18 in which a solid solution element is solid-solved in cobalt and / or nickel
And the solid solution element is Cr-V, C.
r-C, V-C, or Cr-V-C is contained as an essential element, and the total content of the essential elements is 1 to 15% by weight with respect to the binder phase.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A coating device in which a coating tool component of the present invention is installed is a coating device for coating a glass surface such as a cathode ray tube panel, an audio device, a video device,
A coating device for producing a magnetic recording medium having a magnetic film coated on the surface of a film, a disk, a sheet, a tape, a drum, or the like used for magnetic recording accompanying a computer device, or fax paper, copy paper, It is a coating device for coating the surface of a photographic film or the like, and is not particularly limited as long as it is a device to which a coating liquid containing an inorganic substance and an organic substance is coated. Examples of the coating device include various types of roll coating, gravure coating, roll doctor coating, extrusion coating, and slide beat coating described above.

The coating tool component of the present invention provided in this coating apparatus has at least a coating tip portion, and the shape of this coating tip portion is formed so that the coating liquid flows out. In particular, when at least one hole-shaped outlet is formed on the end face on the side where the coating liquid flows out, and the coating liquid can be discharged in a spray form, Or a slit-shaped outlet is formed on the same end face,
A representative example is a case where the coating liquid can be made to flow out in a planar manner. Among these, the coating tip, when a slit-shaped coating liquid outlet is formed on the end surface on the side where the coating liquid flows out, the coating liquid discharged from this slit-shaped coating liquid outlet. Is formed on the surface of a film-shaped object to be coated that moves at a constant speed, facilitating adjustment of the coating thickness and film area, and facilitating the production of tape-shaped objects to be coated such as magnetic recording media. Is preferable. In the case of a coating tool component provided in a coating device for producing a magnetic recording medium, this slit-shaped coating liquid outlet needs to be adjusted depending on the target coating thickness, and in particular, It is preferable that the slit width is 10 μm to 1 mm.

This cemented carbide is substantially composed of a binder phase and a hard phase. Among them, the binder phase substantially contains Co and / or Ni as a solid solution element. There is something. This solid solution element is Cr-V (Cr and V
Both elements are included, the same shall apply hereinafter), Cr-C, V-
C, or Cr-V-C as an essential element, other than M
In some cases, the o element and the W element forming the hard phase are solid-dissolved. Specifically, the binder phase is Co-Cr-V, Co-C.
r-C, Co-V-C, Ni-Cr-V, Ni-Cr-
C, Ni-VC, Ni-Cr-VC, Co-Ni-
Cr-V, Co-Ni-Cr-C, Co-Ni-V-
It is a case of C or Co-Ni-Cr-VC, and in addition, a case of containing Mo and W elements as solid solution elements can be mentioned.

The solid solution element which forms a solid solution in these binder phases is
The content is 15% by weight or less with respect to the binder phase. Particularly, the total amount of solid solution elements of Cr and C or the total amount of solid solution elements of Cr, V and C is 2 to 13. It is preferable to contain 5% by weight because the effect of suppressing the grain growth of the hard phase in the cemented carbide is high and the alloy properties are particularly excellent in corrosion wear resistance and friction wear resistance. If the amount of this binder phase is less than 2% by weight with respect to the whole alloy, the strength and toughness will deteriorate and grinding will become difficult,
In addition, hardness decreases due to residual burrows and deterioration of machined surface accuracy, and conversely, if it exceeds 18% by weight, wear resistance deterioration due to hardness decrease becomes remarkable, so it is set to 2-18% by weight. There is something. The amount of this binder phase is 3 to 16% by weight based on the whole cemented carbide, from the viewpoints of abrasion resistance, corrosion resistance, abrasion resistance, and edge microdamage resistance and microdefect resistance. Is preferable.

In addition to this binder phase, the hard phase constituting the cemented carbide as the coating tool component of the present invention consists essentially of tungsten carbide, or the main component tungsten carbide and other The case where the hard phase is composed of carbides, nitrides, carbonates, oxynitrides of group 4a, 5a, and 6a metals of the periodic table and at least one cubic structure compound of these mutual solid solutions is given. You can
Of these, the hard phase consisting essentially of tungsten carbide is preferable because it has excellent toughness and strength. The content of tungsten carbide in the hard phase is 98% by weight or more, and 4a and 5a of the periodic table are used. , 6a group metal carbides, nitrides, carbonates, oxynitrides and a hard phase consisting of at least one cubic structure compound among these mutual solid solutions, the grain size of tungsten carbide can be adjusted. It is preferable because it becomes easier and the hardness and wear resistance tend to be increased.

Among these hard phases, the hard phase of the cubic crystal structure compound is a compound having a cubic crystal structure crystallographically, and specifically, for example, TiC, ZrC, HfC, Ta.
C, NbC, VC, (W, Ti) C, (W, Cr) C,
(W, Cr, Ti) C, (W, Ti, Ta) C, (W,
Ti, Ta, Nb) C, Ti (C, N), Zr (C,
N), (W, Ti) (C, N), (W, Ti, Ta)
(C, O), (W, Ti, Ta) (N, O), (W, T
A representative example is a case where at least one of i, Ta) (C, N, O) is contained. This cubic structure compound tends to reduce the strength of the cemented carbide, and in order to suppress it, it is preferable that the average grain size is 1 μm or less, and the grain size is made as uniform as possible and dispersed uniformly. When it is present, it is preferable because it has excellent strength and toughness. This cubic structure compound is
There is no problem even if it is a stoichiometric composition or a non-stoichiometric composition.

The tungsten carbide present as the main component of the hard phase has an average particle size of 1.5 μm or less, preferably 1.0 μm or less, and 90% or more has an average particle size of ± 0.5 μm. Within range, other average particle size +1 μm
It is preferable that the particle size of 5% or less with respect to the entire tungsten carbide has an effect of improving the surface accuracy and the sharpness of the coated tip portion.

A coated tool component of the present invention made of a cemented carbide composed of the above composition components is used as a base material, and a hard film having a hardness higher than that of the base material is formed on the surface of the base material. 20μ
It is preferable that the film is coated to a film thickness of m, particularly 3 to 10 μm, because the frictional wear resistance and the corrosion wear resistance are further improved and the life is improved.
The hard film at this time is specifically, for example, 4 of the periodic table.
a, 5a, 6a group elements, Si, Al carbides, nitrides,
Oxides and their mutual solid solutions, and one monolayer selected from diamond, diamond-like carbon, cubic boron nitride, hard boron nitride, and mixtures thereof,
Alternatively, a case where two or more kinds of layers are laminated can be mentioned.

The preferred forms of these hard films are:
Specifically, TiC, TiN, TiCN, TiCO, T
iNO, TiCNO, (Ti, Al) N, (Ti, A
l) CN, (Ti, Al) NO, (Ti, Al) CO,
Examples thereof include a single layer selected from (Ti, Al) CNO, aluminum oxide, diamond, diamond-like carbon, and a mixture thereof, or a laminated layer of two or more kinds. When such a hard film is used, it is easy to obtain a dense hard film, excellent in abrasion resistance against magnetic particles such as ferrite, and in corrosion resistance against organic substances including resin. It is preferable because it excels.

Further, when cobalt elements and / or nickel elements are contained in these hard films, the strength of the hard film itself is improved and the denseness of the hard film itself is improved. It is particularly preferable from the viewpoint that the hard film characteristics of (1) are further improved and the quality is stable. At this time, the cobalt element and / or the nickel element may be contained when the binder phase constituting the base material is diffused, and it is also preferable that the cobalt element and / or the nickel element be contained when the hard film is produced. Other configurations include, for example, Si, Ti between the hard film and the base material.
Metals, their alloys, Ti-Ni, Ti-Al, Ti-N
i-Al intermetallic compound {Ti ₃ Ni, TiNi, Ti
Ni ₃ , TiAl ₃ , TiAl, Ti ₃ Al, (Ti, N
i) Al ₃ , (Ti, Ni) ₃ Al or (Ti, Ni)
When there is an underlayer consisting of one kind of single layer or two or more kinds of layers selected from Al} or the like, for example, in the case of a diamond hard film, the adhesion between them is improved, This is preferable because the peel resistance of the hard film can be improved. These hard films may consist of stoichiometric or non-stoichiometric compositions, which is not a problem.

The coated tool component of the present invention is not particularly limited in shape, and is made of a cemented carbide having the above-mentioned compositional components, or this cemented carbide is used as a base material, and this base material is used. That is, it may be produced from a coated cemented carbide in which the surface of is coated with the above-mentioned hard film. In particular, the coated tool parts coated with a hard film should have a shape in which the hard film is partially coated. Specifically, it is possible to make contact with the coating liquid and the object to be coated. It is preferable to coat the flexible part. The shape of the coating tool component of the present invention can be concretely shown in FIGS. 1, 2 and 3 as a representative example of a coating tip for a die coater. 1 is a schematic perspective view illustrating a coating tool component of the present invention, and FIG. 2 is a schematic cross-sectional view from a direction parallel to the slot width of the coating tip portion of FIG. FIG. 3 is a schematic sectional view shown as a modified example of FIG.
In FIGS. 1, 2 and 3, reference numeral 1 is a coating tip portion, reference numeral 2 is a slot portion (discharge port) through which the coating liquid is extruded, and reference numeral 3 is a coating liquid. It is a pocket part to store. Further, in these FIGS. 1 to 3, the discharge port portion is made of cemented carbide and the other base portion is made of steel,
It is also preferable in terms of cost to have a structure in which these two are joined.

When the coated tool component of the present invention is made of cemented carbide, the conventional powder metallurgy method is applied by using each commercially available starting raw material powder as described in detail in the following practical tests. It can be produced by The important point in the manufacturing method is
Specifically, first, a tungsten carbide powder having as fine and uniform a particle size distribution as possible is used as a starting material, and the other starting material powders have the same tendency, and a starting material powder having few unavoidable impurities is selected. Next, the important point in the manufacturing process is to set the composition in the low carbon region, strengthen the mixing and grinding in the mixing process and avoid mixing of impurities during mixing, and sintering in the sintering process. The temperature may be as low as possible. Further, using the cemented carbide thus produced as a base material, the surface of the base material is coated with a hard film by the conventional chemical vapor deposition method (CVD).
Method), physical vapor deposition method (PVD method) or plasma CVD
It can be carried out by one or more methods among the methods.

[0022]

The coated tool component of the present invention has a particle size and a grain size of tungsten carbide in the alloy depending on the content of the binder phase forming the cemented carbide and the solid solution element dissolved in the binder phase. In addition to the effect of maintaining a uniform distribution, this binding phase and hard phase have the effect of enhancing wear resistance, micro-damage resistance, micro-fracture resistance, and corrosion resistance. And the friction and wear resistance are improved, the surface accuracy of the alloy is easily improved, and the ingot has an indirect effect of improving the sharpness and lubricity of the alloy. Further, in the coated tool component of the present invention coated with a hard film, the hard film has the effect of further increasing the hardness, corrosion resistance and lubricity.

[0023]

[Practical Test 1] First, as a starting material powder, a tungsten carbide powder having an average particle diameter of 1.0 μm and Co, Cr, and Cr having an average particle diameter in the range of 1.2 to 1.8 μm.
_The present invention product 1 shown in Table 1 was prepared by using ₃ C ₂ and VC powders.
10 to 10 and Comparative Compositions 1 to 4 were weighed. Each of these compounded powders was placed in a stainless steel pot together with an acetone solvent and a cemented carbide ball, and
After mixing and pulverizing for a time, it was dried to obtain a mixed powder. These mixed powders were filled in a mold, and a pressure of ² ton / cm ² was applied to form a shape having a diameter of about 10 mm and a height of about 30 mm and about 13 mm.
A powder compact was prepared so that a cemented carbide of 13 mm x 5 mm shape was obtained, and this compact was placed on a sheet made of alumina and carbon fibers, and the results are shown in Table 1 in a vacuum with an atmospheric pressure of 10 Pa. The mixture was heated and held at the temperatures shown for 1 hour to obtain cemented carbides of the invention products 1 to 10 and comparative products 1 to 4.

The cemented carbide samples of the present invention products 1 to 10 and comparative products 1 to 4 thus obtained were wet-ground with a # 230 diamond grindstone to obtain a shape of about 10 mm diameter × 30 mm height and about 13 mm × 13 mm. It was made into a cemented carbide of x5 mm shape. Of these samples, 13 mm x 13 mm x
The hardness (HRA) by a Rockwell hardness tester was obtained using each 5 mm-shaped cemented carbide sample, and the results are shown in Table 2.
It was shown to.

Further, one end surface of 13 mm × 5 mm of the sample having the same shape was subjected to lapping mirror finishing, and the structure was observed with a metallographic microscope and a scanning electron microscope. As a result, the product 1 of the present invention
In Nos. 10 to 10, tungsten carbide having an average particle size of 0.7 to 0.9 μm was uniformly distributed, and the dispersion of the binder phase was good, whereas in Comparative Product 1, a few cavities were present, Comparative product 2 showed a tendency to be unsintered, and tungsten carbide grains grew in Comparative Product 2,
Comparative product 3 has a variation in alloy structure, and the bending strength and fracture toughness values are about 10 to 20% lower than those of the product 5 of the present invention, and the values also tend to have large variations. In all the products 1 to 4, the binder phase was poorly dispersed, and a binder phase pool was observed.

Next, a simple corrosion resistance test was conducted using each sample having the same shape. The corrosion resistance test method is carried out at room temperature in a solution containing dibenzyl disulfide, benzothiazole, higher fatty acid, binder resin, etc., which has been practically used as a magnetic film constituting the surface coating of a recording medium.
After soaking for 0 days, the corrosion state was observed with an optical microscope. The results of this corrosion resistance test are also shown in Table 3. The judgment result of the corrosion resistance test at this time is indicated by the following symbols. {The notation and corrosion status are ◎: no corrosion at all, ○: slightly corroded (with some cloud), △: with corrosion (with cloud), ×: significant corrosion (with color tone change)}

Further, the outer circumference and one end surface of a cemented carbide sample having a diameter of 10 mm and a height of 30 mm were lapped, and these were used as pins, using a disk coated with a thick film made of polyethylene phthalate on a steel plate. A simple test corresponding to the production of a coating film for a recording medium was carried out with a pin-disk type friction and wear tester. This simple test condition is that a clearance of 1 mm is provided between the pin and the disk, and molybdenum disulfide powder, alumina powder, ferrite powder, dibenzyl disulfide, benzothiazole, higher fatty acid and binder resin are always present in this clearance. Rotate the pin on the disk in the presence of a solution containing
The state of corrosion and frictional wear of the end surface of the pin after the lapse of time was observed, and the results are also shown in Table 3. The pin-disk test results at this time are indicated by the following symbols. {The symbols and damages are ◎: no damage, ○: slightly damaged,
△: damaged, ×: markedly damaged}

[0028]

[Table 1]

[0029]

[Table 2]

[0030]

[Table 3]

[0031]

[Execution test 2] The starting raw material powder used in execution test 1,
In addition, Ni powder having an average particle size of 1.5 μm was used as the compounding components for the products 11 to 19 of the present invention shown in Table 4, and the other manufacturing method was that only the sintering temperature was set to the temperature also shown in Table 4. Was carried out in substantially the same manner as in the practical test 1 to obtain the products 11 to 19 of the present invention constituted by the binder phase containing Co—Ni. The products 11 to 19 of the invention thus obtained were investigated in the same manner as in the practical test 1, and the results are shown in Tables 5 and 6.

[0032]

[Table 4]

[0033]

[Table 5]

[0034]

[Table 6]

[0035]

[Practical test 3] Using the starting raw material powders used in practical tests 1 and 2, the compounding composition components for the products 20 to 27 of the present invention shown in Table 7 were used. Except that the temperature was changed, the same procedure as in Experiment 1 was carried out, and the product 20 of the present invention composed of a binder phase containing Ni.
I got 27. The products 20 to 27 of the present invention thus obtained were investigated in the same manner as in the practical test 1, and the results are shown in Tables 8 and 9.

[0036]

[Table 7]

[0037]

[Table 8]

[0038]

[Table 9]

[0039]

[Practical test 4] In addition to the starting raw material powders used in practical tests 1 and 2, TaC and T having an average particle size of 1.0 to 2.0 μm are also used.
Using the powders of iC and NbC as blending composition components for the products 28 to 32 of the present invention shown in Table 10, strengthening the mixed pulverization, and setting the sintering temperature to the temperature shown in Table 10 together. In substantially the same manner as in Test 1, Products 28 to 32 of the present invention composed of a hard phase containing a cubic structure compound (average particle size 0.7 to 0.9 μm) were obtained. The invention products 28 to 32 thus obtained were investigated in the same manner as in the practical test 1, and the results are shown in Tables 11 and 12.

[0040]

[Table 10]

[0041]

[Table 11]

[0042]

[Table 12]

[0043]

[Practical test 5] The product 5 of the present invention obtained by practical tests 1 to 4,
Using 15, 24, 28 and 32 as the base material, the surface of the base material of the present invention product 5 was coated with a hard film of titanium nitride to a film thickness of 5 μm to obtain the present invention product 33. The surface of the base material is coated with a hard film of a nitride containing Ti and Al in a thickness of 5 μm to obtain a product 34 of the present invention, and a hard film of diamond-like carbon is formed on the surface of the base material of the product 24 of the present invention. 5 μm
The present invention product 35 is coated with a film thickness, and the base material surface of the invention product 28 is coated with a hard film of titanium nitride to a thickness of 5 μm after Co-plating with a thickness of about 1 μm. Co is diffused and contained in the film to obtain the product 36 of the present invention. The product surface of the product 32 of the present invention 32 has a titanium nitride film with a thickness of 1 μm and 3 μm.
A hard film of aluminum oxide having a thickness of m and titanium nitride having a thickness of 1 μm were sequentially coated to obtain a product 37 of the present invention. The immersion corrosion test and the pin-disk friction and wear test of the execution test 1 were performed on the products 33 to 37 of the present invention thus obtained, and the results are shown in Table 13. Of these, the product of the present invention 35 coated with a hard film of diamond-like carbon
Had a tendency to have an excellent surface, especially after the friction and wear test.

[0044]

[Table 13]

Based on the results of the above simple test, mixed powders of the same composition were used for the products 2, 3, 5, 15, 24, 32, 33, 34, 35 of the present invention and the comparative products 2, 3, respectively. Through the steps of press molding, pre-sintering, sintering, grinding, and lapping (including the mirror-finished portion), a coating tool component including a coating tip portion for the coating device shown in the schematic view of FIG. 1 was manufactured. . These coating tool parts are attached to a magnetic tape coating device that has been in practical use for a long time, and a coating production test including a magnetic substance film of a magnetic recording medium is performed, and the magnetic tape that is the object to be coated is coated. The life evaluation judged from the occurrence of streaks in the applied coating film and the state of minute damage to the edge at the application tip of the application tool component is a comparison product when the life time of the comparison product 2 is set to 1. 3 is about 1.3 times, the present invention product 2
Is about 1.9 times, the present invention product 3 is about 2.1 times, the present invention product 5 is about 2.3 times, the present invention product 15 is about 2.5 times, the present invention product 24
Is about 2.3 times, the invention product 32 is about 2.5 times, the invention product 3
3-35 was about 2.8-3.1 times.

[0046]

The cemented carbide coated tool parts of the present invention are different from the conventional cemented carbide coated tool parts in that the fatty acid contained in the coating liquid, the extreme pressure additive, the Excellent corrosion resistance due to rust agents, especially excellent corrosion damage and abrasion resistance against chemical corrosion and electrical corrosion, resistance due to magnetic powder, hard ceramic powder, etc. contained in the coating liquid Excellent abrasion resistance, excellent micro-damage resistance at the coating tip edge of the coating liquid discharge port, and excellent balance of the properties of the alloy that combines these When it is put into practical use, the surface roughness of the object to be coated can be suppressed, and the generation of streaks on the surface of the object to be coated can be suppressed, so that it has an excellent effect of a long life. In addition, the coated cemented carbide coated tool component of the present invention is further improved in friction and wear resistance, and is excellent in corrosion damage wear resistance against chemical corrosion and electrical corrosion, and therefore has a longer life. There is an excellent effect that the life is extended.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an outline of a coating tool component when a practical test is tried in an implementation test.

2 is a sectional view taken in a direction parallel to the slit width of FIG.

FIG. 3 is a sectional view showing a modified example of FIG.

[Explanation of symbols]

Reference numeral 1 is a coating tip. Reference numeral 2 is a slot portion (discharge port) through which the coating liquid is extruded. Reference numeral 3 is a pocket portion for storing the coating liquid.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B05C 5/02

Claims (10)

(57) [Claims] 1. A coating tool component which is provided in a coating device and is designed to coat a surface of an object to be coated with a coating film, and the coating tool component is the coating film. Is provided with a coating tip portion, at least the coating tip portion of the coating tool component is made of cemented carbide, the cemented carbide, tungsten carbide or tungsten carbide and the periodic table 4a,
82 to 98% by weight of a hard phase composed of at least one cubic crystal structure compound selected from carbides, carbonitrides of 5a and 6a and mutual solid solutions thereof, and a solid solution element in cobalt and / or nickel. Bonded phase 2-18
And the solid solution element is Cr-V, C.
Made of cemented carbide for a coating device, which contains r-C, V-C, or Cr-V-C as an essential element, and the total content of the essential elements is 1 to 15% by weight with respect to the binder phase. Painting tool parts. 2. The cemented carbide coating tool component for a coating apparatus according to claim 1, wherein the coating tip has a slit-shaped outlet at which the coating liquid flows out. 3. The cemented carbide coating tool component for a coating apparatus according to claim 1, wherein the hard phase is substantially composed of tungsten carbide, and the tungsten carbide is uniformly dispersed. 4. The hard phase, wherein 98% by weight or more of the hard phase is tungsten carbide, and the balance is Ti, Ta, Nb.
Of at least one selected from the group consisting of carbides of Ti, carbonitrides of Ti and W-Ti, W-Ti-Ta, W-Ti-Nb, W-Ti-Ta-Nb compound carbides, and compound carbonitrides. The compound containing a cubic structure compound, and the tungsten carbide and the cubic structure compound are uniformly dispersed.
Alternatively, a coating tool component made of cemented carbide for a coating device according to item 2. 5. The cubic crystal structure compound has an average particle size of 1 μm.
A cemented carbide coating tool component for a coating apparatus according to claim 4, wherein the coating tool component has a thickness of m or less. 6. The tungsten carbide has an average particle size of 1.
The cemented carbide coating tool component for a coating apparatus according to any one of claims 1 to 5, which has a thickness of 5 µm or less. 7. A hard material having a higher hardness than that of the base material on the surface of the base material, which is a cemented carbide coating tool component for a coating device according to claim 1. A coated tool part made of coated cemented carbide for a coating device, in which a film is coated and the film thickness of the hard film is 1 to 20 μm. 8. The hard film is a carbide, nitride, carbonitride, carbon oxide, oxynitride, oxycarbonitride, and aluminum oxide of Ti or Ti--Al, a diamond film, a diamond-like carbon film, or The coated cemented carbide coated tool component for a coating apparatus according to claim 7, comprising at least one single layer or two or more laminated layers in these mixtures. 9. The hard film according to claim 7, wherein the hard film contains cobalt element and / or nickel element.
Alternatively, a coated cemented carbide coating tool component for a coating device according to item 8. 10. The coated tool component according to claim 1, wherein the coated tool component is used for coating a coating film containing a magnetic substance. Painting tool parts.