JPH0257624B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for joining roofing materials made of stainless steel sheets, in which side edges of the roofing materials made of stainless steel sheets are formed and joined by soldering to prevent infiltration of rainwater, etc. It is related to.

Traditionally, asphalt, portland cement,
Construction methods using various materials such as synthetic resin and synthetic rubber have been devised, and generally, as shown in Fig. 1, an asphalt waterproof layer 11 is laminated on a concrete slab 1, and the waterproof concrete 12 is expanded and contracted. A construction method is used that connects them using joints 13 and waterproofs them. However, with this construction method, asphalt materials are sensitive to ultraviolet rays and heat, and concrete is prone to cracking, causing problems in the durability of both materials and causing water leaks. In order to solve this problem, a waterproofing method in which stainless steel plates are joined by seam welding has recently come to be increasingly used in large-area structures. However, although this method is durable, it has problems that make it difficult for small-scale sheet metal companies to implement, such as the high construction cost, the fact that it is not common, the need for advanced welding technology, and the high cost of equipment. Ta.

The present inventors conducted various studies to solve the above problems, and as a result of considering durability, cost, workability, etc., the present inventors formed the side edges of a stainless steel plate and soldered the side edges. The present invention was completed by discovering that the above-mentioned problems could be solved by adhesion.

That is, in the present invention, at the adjacent side end portions of the stainless steel plate roofing materials that are joined to each other,
The solder clamping parts that clamp the solder and the pressing parts that are brought into contact with each other are continuously raised and processed, the solder is continuously clamped between the solder clamping parts, and the solder clamping parts are heated to release the molten solder. A method for joining roofing materials made of stainless steel sheets is provided, which is characterized in that the roofing materials made of stainless steel sheets are watertightly joined together by filling the solder clamping portions of the roofing materials made of stainless steel sheets and cooling the solder.

Hereinafter, the method for joining stainless steel plate roofing materials according to the present invention will be further explained based on the drawings.
Fig. 2 is an explanatory diagram of an embodiment of a roof constructed by the method for joining stainless steel plate roofing materials according to the present invention, and Fig. 3 is an illustration of an example of a roof constructed by the method of joining stainless steel plate roofing materials according to the present invention. Fig. 4 is a cross-sectional view showing an embodiment of a concrete slab with solder sandwiched therein, and Fig. 4 explains a method of joining stainless steel plate roofing materials with solder sandwiched thereon by heating, pressing, and cooling. The perspective view and FIG. 5 are cross-sectional views showing the state of the embodiment of FIG. 3 after completion of joining.

In the drawing, 1 is a concrete slab that constitutes the base of the roof, and 2 is a stainless steel plate whose side end is raised at a factory or construction site, placed on the concrete slab 1, and joined to each other with solder 3. It is a roofing material, and the thickness of this roofing material 2 is preferably 0.1 to 1 mm. The reason why the plate thickness is set to 0.1 to 1 mm is because there is a problem with strength if it is less than 0.1 mm.
This is because, if the temperature exceeds 1, a large amount of force is required to process the side edges, and the thermal conductivity of stainless steel is low, making it difficult to control the temperature of the solder 3 held between the stainless steel plate roofing material 2. Reference numeral 2a denotes a solder clamping part which is provided by upright processing at the side end of the roof material 2 in order to clamp the solder 3 in a continuous state, and is heated by a heating burner 4 after the solder 3 is clamped.
As shown in FIG. 3, this solder clamping part 2a has a part that clamps the solder 3 and a lower part of the part that clamps the solder that is inclined upward at a small angle θ (preferably within 15 degrees) with respect to the horizontal plane. It is preferable to have a structure having an L-shaped cross-sectional shape, which has a solder joint part that expands the joint area by spreading the solder in the horizontal direction without causing the melted solder to flow down due to capillary action when the solder 3 melts. As shown in Figure 3, the solder clamping part 2a of one of the roofing materials 2 is extended upward, and after soldering, it is bent as shown in Figure 5 to cover the upper part of the solder clamping part 2a and prevent rainwater from entering the solder clamping part 2a. It does not change the gist of the present invention to provide the bent portion 2d that prevents the bending. Incidentally, instead of the heating burner 4, a heater using an electric heater may be brought into contact with both sides of the solder clamping part 2a to heat the solder clamping part 2a.
In addition to linear solder as shown in the drawing, strip-shaped solder can also be used, but granular solder has a high possibility of creating voids between the solder clamping parts 2a even when melted and pressed, which reduces the strength of the joint. It is difficult to ensure watertightness, which is undesirable. 2b connects the side end of the roofing material 2 to the solder clamping part 2a so as to be continuous with the lower part of the solder clamping part 2a.
When the solder 3 sandwiched between the solder clamping portions 2a is melted by the heating burner 4, it is pressed by the pressure rollers 5 from both sides and brought into contact with each other and melted. This is a pressing part that prevents solder 3 from flowing down.
It is more preferable if a deformation absorbing part 2c with an oblique linear or arcuate cross section is provided at the lower part of the pressing part 2b as shown in the drawing, since it can absorb the expansion and contraction of the stainless steel plate roofing material 2 due to temperature changes. As described above, the pressing roller 5 presses the pressing portions 2b of the roofing material 2 from both sides to bring the pressing portions 2b of the roofing material 2 into contact with each other, narrowing the distance between the side edges of the roofing material 2, and joining them with the solder 3. It also serves to expand the area and increase the bonding strength, so it is preferable that the roller support member 5a is always pressed by the roller pressing spring 5b so that the pressing roller 5 can obtain a constant pressing force. In addition, although there is only one roller 5 on each side of the pressing part 2b in FIG. 4, it is preferable that there be a plurality of rollers if possible, and furthermore, it is preferable to use a steel alloy material or the like with good thermal conductivity for the rollers 5. This is preferable because solidification of the solder 3 can also be promoted. Reference numeral 6 denotes a hose for injecting cooling water or air to the solder clamping portion 2a in order to cool and solidify the molten solder 3, and the heating burner 4, pressing roller 5, and hose 6 are set on one cart. It would be preferable if it were done, as it would make the work much easier.

As described above, the method for joining stainless steel roofing materials according to the present invention involves raising the adjacent side ends of the stainless steel roofing materials to be joined together, and soldering the parts between the side ends. Since it is a joining method, it is not vulnerable to ultraviolet rays and heat like asphalt material, nor is it prone to cracking like concrete, and it does not require special technology or expensive equipment, so it is suitable for small-scale sheet metal manufacturers. However, it is a method that can be used for construction, and is of great industrial value.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of an embodiment of a conventional roof structure of a concrete structure, Fig. 2 is an explanatory diagram of an embodiment of a roof constructed by the method of joining stainless steel plate roofing materials according to the present invention, and Fig. 3 is an explanatory diagram of an embodiment of a roof structure of a conventional concrete structure. The figure is a cross-sectional view showing an example of a state in which solder is sandwiched between roofing materials made of stainless steel plates that have been subjected to raised processing on the side edges and placed on a concrete slab. The stainless steel roofing material is heated, pressed,
FIG. 5 is a perspective view illustrating a method of cooling and joining, and FIG. 5 is a sectional view showing the state of the embodiment of FIG. 3 after completion of joining. DESCRIPTION OF SYMBOLS 1... Concrete slab, 2... Stainless steel plate roofing material, 2a... Solder clamping part, 2b... Pressing part, 2c... Deformation absorbing part, 2d... Bending part,
3... Solder, 4... Heating burner, 5... Pressing roller, 5a... Roller support material, 5b... Roller pressing spring, 6... Hose, 11... Asphalt waterproof layer, 12... Waterproof concrete, 13 ……
Expansion joint.

Claims (1)

[Claims] 1. A solder clamping part that clamps the solder and a pressing part that comes into contact with each other are continuously raised on the adjacent side ends of each of the stainless steel plate roofing materials that are to be joined to each other, and the solder clamping parts are formed between The feature is that the solder is held in a continuous state, the solder is heated, the molten solder is filled into the solder held part of the stainless steel sheet roofing material, and then the stainless steel sheet roofing material is watertightly joined by cooling. A method for joining stainless steel sheet roofing materials.