JPS592576B2 - Metal mold for casting - Google Patents
Metal mold for castingInfo
- Publication number
- JPS592576B2 JPS592576B2 JP11620778A JP11620778A JPS592576B2 JP S592576 B2 JPS592576 B2 JP S592576B2 JP 11620778 A JP11620778 A JP 11620778A JP 11620778 A JP11620778 A JP 11620778A JP S592576 B2 JPS592576 B2 JP S592576B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- casting
- mold
- heat
- metal mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 21
- 239000002184 metal Substances 0.000 title claims description 21
- 238000005266 casting Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 10
- 229910001111 Fine metal Inorganic materials 0.000 claims description 4
- 239000002923 metal particle Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000005909 Kieselgur Substances 0.000 description 3
- 238000004070 electrodeposition Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910001567 cementite Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Description
【発明の詳細な説明】
本発明は断熱基材を包含する金属微粒子を表面に積層電
着せしめた多孔質金属被覆層を有する鋳造用金属鋳型に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal mold for casting having a porous metal coating layer on the surface of which fine metal particles including a heat insulating base material are laminated and electrodeposited.
従来、鋳造用金属鋳型はアルミニウム合金、亜鉛合金な
どのように溶融温度の低い材料の鋳造には広く利用され
ているが、鋳鉄などの高融点材料に対してはあまり用い
られていない。Conventionally, metal molds for casting have been widely used for casting materials with low melting temperatures such as aluminum alloys and zinc alloys, but they have not been used much for casting materials with high melting points such as cast iron.
これは鋳鉄が凝固時に鋳型壁によつて急冷されて、レー
デブライト、共晶セメンタイトあるいは遊離セメンタイ
トを晶出して表面にチル層を発生し、機械加工を著しく
困難にするためである。このような欠点を改良するため
、ケイソウ土などの断熱基材を各種の粘結剤と混じて金
属鋳型壁に塗付し、鋳型の熱伝導性を低下させることに
より鋳込材料の急冷によるチル化を防止することが行わ
れている。しかしながら、金型表面と塗型層との密着性
や被膜の耐久性がかならずしも十分でなく、その反復使
用回数の向上が焦眉の急となつている。本発明は上記の
ような問題点を一掃し、鋳鉄のチル発生を抑制するため
の断熱基材を均一に包含する金属微粒子を分散電着せし
めた多孔質金属覆を有することを特徴とする金属鋳型を
提供するものである。This is because cast iron is rapidly cooled by the mold wall during solidification, crystallizing ledebrite, eutectic cementite, or free cementite, creating a chill layer on the surface and making machining extremely difficult. In order to improve these shortcomings, a heat insulating base material such as diatomaceous earth mixed with various binders is applied to the walls of the metal mold to reduce the thermal conductivity of the mold, thereby reducing the chill caused by rapid cooling of the casting material. Measures are being taken to prevent this from happening. However, the adhesion between the mold surface and the coating layer and the durability of the coating are not always sufficient, and there is an urgent need to improve the number of repeated uses. The present invention eliminates the above-mentioned problems and provides a metal that is characterized by having a porous metal cover on which fine metal particles are dispersed and electrodeposited, uniformly containing a heat insulating base material for suppressing the occurrence of chill in cast iron. It provides a mold.
即ち、本発明による金属鋳型は、表面に粒径０−０１〜
１１７！Ｌの微細な金属粒子を多段に積層した多孔質皮
膜を有するものであり、個々の金属微粒子中には均一に
分散析出した断熱基材を包含している。この多孔質電着
層は電着条件を変えることにより任意の厚さに変化させ
ることができるほか、断熱基材を懸濁しないメッキ浴中
における電着操作を適宜挿入することにより強固な断熱
性金属被覆層となるものである。こうして形成された断
熱性金属被覆層は断熱基材を含有する金属微粒子による
断熱効果に加えて多孔質層に包含される空気層による相
乗効果により有効な断熱性被覆層として作用するもので
ある。従来の塗型層と異なり、多孔質電着層に先立つて
形成される複合めつき層の作用により金属鋳型表面が大
気と絶縁されているため酸化スケールによる断熱被覆層
のはく離は全く発生せず、このため連続反復使用回数が
一段と向上するものである。以下に本発明の実施例につ
き説明する。That is, the metal mold according to the present invention has a particle size of 0-01 to 0.01 on the surface.
117! It has a porous film in which L fine metal particles are laminated in multiple stages, and each metal fine particle contains a heat insulating base material that is uniformly dispersed and precipitated. This porous electrodeposited layer can be changed to any desired thickness by changing the electrodeposition conditions, and can be made to have strong heat insulation properties by appropriately inserting an electrodeposition operation in a plating bath that does not suspend the heat insulating base material. This serves as a metal coating layer. The heat-insulating metal coating layer thus formed functions as an effective heat-insulating coating layer due to the synergistic effect of the air layer contained in the porous layer in addition to the heat-insulating effect of the metal fine particles containing the heat-insulating base material. Unlike conventional coating layers, the metal mold surface is insulated from the atmosphere by the action of the composite plating layer that is formed prior to the porous electrodeposition layer, so there is no peeling of the heat insulating coating layer due to oxide scale. Therefore, the number of consecutive repeated uses is further improved. Examples of the present invention will be described below.
実施例 １
５０×５０×２０の鋳鉄板に、けいそう土粒子を均一に
分散包含した金属微粒子による厚さ０．３薦麗の多孔質
金属被覆層を形成し、アセチレン媒を塗付後、Ｃ０２砂
でできた立方体鋳型の側面にこれを設置し、炭素３．２
％、けい素１．８％、マンガン０．３％の鋳鉄を注湯し
たところ、チルの発生が認められなかつた。Example 1 A porous metal coating layer with a thickness of 0.3 cm was formed on a 50 x 50 x 20 cast iron plate by metal fine particles containing diatomaceous earth particles uniformly dispersed therein, and after applying an acetylene medium, This was installed on the side of a cubic mold made of C02 sand, and carbon 3.2
%, silicon 1.8%, and manganese 0.3%, no chill was observed.
実施例 ２
５０×５０×２０の鋳鉄板に厚さ０．３”薦の多孔質金
属被覆層を形成し、多孔層の空げきに泥状のけいそう土
粉末を含浸させ、Ｃ０２砂でできた立方体鋳型の側面に
これを設置し、炭素３．２％、ケイ素１．９％、マンガ
ン０．５％の鋳鉄を注湯したところ、チルの発生が認め
られなかつた。Example 2 A porous metal coating layer with a thickness of 0.3" was formed on a 50 x 50 x 20 cast iron plate, and the cavities of the porous layer were impregnated with muddy diatomaceous earth powder. When this was placed on the side of a cubic mold, and cast iron containing 3.2% carbon, 1.9% silicon, and 0.5% manganese was poured into the mold, no chill was observed.
第１図は本発明によつて得られる断熱性金属被層の拡大
断面の態様を示す略図である。
１・・・・・・金属鋳型、２・・・・・・電着金属、３
・・・・・・断熱：材。FIG. 1 is a schematic diagram showing an enlarged cross-sectional view of a heat-insulating metal coating obtained according to the present invention. 1...Metal mold, 2...Electrodeposited metal, 3
...Insulation: material.
Claims (1)
熱基材を包含する金属微粒子を積層電着せしめた多孔質
金属被覆層を有することを特徴とする鋳造用金属鋳型。1. A metal mold for casting, characterized in that it has a porous metal coating layer on which fine metal particles including a heat-insulating base material are laminated and electrodeposited, which are formed in a soaking bath in which a heat-insulating base material is suspended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11620778A JPS592576B2 (en) | 1978-09-19 | 1978-09-19 | Metal mold for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11620778A JPS592576B2 (en) | 1978-09-19 | 1978-09-19 | Metal mold for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55112148A JPS55112148A (en) | 1980-08-29 |
| JPS592576B2 true JPS592576B2 (en) | 1984-01-19 |
Family
ID=14681483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11620778A Expired JPS592576B2 (en) | 1978-09-19 | 1978-09-19 | Metal mold for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS592576B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597882U (en) * | 1982-07-08 | 1984-01-19 | 伊藤 幸作 | Leaf bag |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6167540A (en) * | 1984-09-12 | 1986-04-07 | Izumi Jidosha Kogyo Kk | Casting mold |
-
1978
- 1978-09-19 JP JP11620778A patent/JPS592576B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597882U (en) * | 1982-07-08 | 1984-01-19 | 伊藤 幸作 | Leaf bag |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55112148A (en) | 1980-08-29 |
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