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Method for joining structural material, joining sheet, and joint structure

A technology of structural materials and joining methods, applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., can solve problems such as high-priced equipment, and achieve the effect of improving strength

Active Publication Date: 2016-08-17
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a concern that expensive equipment is required for spot welding.

Method used

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  • Method for joining structural material, joining sheet, and joint structure
  • Method for joining structural material, joining sheet, and joint structure
  • Method for joining structural material, joining sheet, and joint structure

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 》

[0031] refer to Figure 1 ~ Figure 4 The structural material joining method, joining material, and joining structure of the first embodiment will be described.

[0032] figure 1 (A) is a perspective view showing the state before joining of the first structural material 10 , the second structural material 20 , and the joining material 30A to be joined. figure 1 (B) is a perspective view showing the state after joining. figure 2 (A) is a cross-sectional view showing a state before joining the first structural material 10 , the second structural material 20 , and the joining material 30A to be joined. figure 2 (B) is an enlarged cross-sectional view of the bonding material. image 3 (A) is a cross-sectional view showing a state after bonding of the first structural material 10 , the second structural material 20 , and the bonding material 30A. image 3 (B) is an enlarged cross-sectional view of the junction.

[0033] Each structural material is, for example, a frame materi...

no. 2 Embodiment approach 》

[0056] refer to Figure 5 , Image 6 The structural material joining method, joining material, and joining structure of the second embodiment will be described.

[0057] Figure 5 (A) is a cross-sectional view showing a state before bonding of the first structural material 10 , the second structural material 20 , and the bonding material 30B to be bonded. Figure 5 (B) is an enlarged cross-sectional view of the bonding material. Image 6 (A) is a cross-sectional view showing a state after bonding of the first structural material 10 , the second structural material 20 , and the bonding material 30B. Image 6 (B) is an enlarged cross-sectional view of the junction.

[0058] The first structural material 10 is, for example, a steel material, and a plated film 12 of Cu—Ni alloy, which is a refractory metal, is formed on the joint surface. Similarly, the second structural material 20 is, for example, a steel material, and a Cu—Ni alloy plating film 22 is formed on the joint su...

no. 3 Embodiment approach 》

[0073] refer to Figure 7 , Figure 8 The structural material joining method, joining material, and joining structure of the third embodiment will be described.

[0074] Figure 7 (A) is a cross-sectional view showing a state before bonding of the first structural material 10 , the second structural material 20 , and the bonding material 30C to be bonded. Figure 7 (B) is an enlarged cross-sectional view of the bonding material. Figure 8 (A) is a cross-sectional view showing a state after bonding of the first structural material 10 , the second structural material 20 , and the bonding material 30C. Figure 8 (B) is an enlarged cross-sectional view of the junction.

[0075] The first structural material 10 is, for example, a steel material, and a Sn plating film 13 that is a low melting point metal is formed on the bonding surface. Similarly, the second structural material 20 is, for example, steel, and a Sn plating film 23 is formed on the bonding surface. It should be ...

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Abstract

When a first structural material (10) and a second structural material (20) are joined together using an interposed intermetallic compound layer comprising a low-melting-point metal and a high-melting-point metal, a joint material provided with a mixed layer comprising a raw-material component for forming the intermetallic compound layer, and also comprising a resin component that softens and flows during heat treatment, is interposed between the first structural material (10) and the second structural material (20), and the first structural material (10) and the second structural material (20) are cemented together and heat-treated. The first structural material (10) and the second structural material (20) are thus joined using the interposed intermetallic compound layer, and the resin component (33) is caused to exude and cover the lateral circumferential (exposed) portion of the intermetallic compound layer with a resin film (R), whereby the joint state of the first structural material (10) and the second structural material (20) can be easily stabilized, and a joint layer having a substantially uniform thickness is formed over the entire space between the joint surfaces of the structural materials, also enabling improving the strength of the joint area.

Description

technical field [0001] The present invention relates to a method of joining structural materials having large joining surfaces, a joining sheet used for the joining, and a joining structure. Background technique [0002] Welding, spot welding, or brazing can be used to join structural materials having large joint surfaces such as radiators and automobile body parts. [0003] Here, solder has the property of concentrating on parts with good wettability when it is heated and melted. Therefore, it is difficult to join large joint surfaces during soldering, and point joining has to be used. In addition, in spot welding, in terms of its process characteristics, the joint part is in the shape of a point, and surface joining is difficult. In this way, welding and spot welding are joints at points, so there is a concern that the joint strength may be lowered. [0004] On the other hand, brazing spreads the brazing filler metal over the entire joint surface, so that surface joining...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/00
CPCB23K20/002B23K20/026B23K35/302B23K35/3613C21D9/50B23K1/00
Inventor 石野聡川口义博中野公介高冈英清柳瀬航
Owner MURATA MFG CO LTD
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