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Method of joining metallic members and process for manufacturing radiation member

A bonding method and a technology of metal elements, which are applied in the fields of metal element bonding and heat dissipation element manufacturing, can solve problems such as poor bonding, inability to bond, and fusing of the base end 464a of the fin 464, etc., and achieve high bonding strength and high resistance to deformation The effect of intensity

Inactive Publication Date: 2008-04-16
NIPPON LIGHT METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the compressive stress from the bonding jig 463 cannot be sufficiently transmitted to the interface between the base plate 462 and the base end portion 464a of the fin 464, resulting in poor or impossible bonding.
Moreover, when the thickness of the base end portion 464a of the fin 464 is relatively thin (eg, less than 0.5 mm), there is a disadvantage that the base end portion 464a of the fin 464 is fused.
[0030] (2) Since the joining jig 463 is pressed into the side of the fin 464, the base end portion 464a in the composition of the fin 464 cannot be omitted, and the shape and structure of the heat dissipation element are thus limited.
[0031] (3) Since the joining jig 463 is pressed into the side of the fin 464, the base end 464a directly below the heat dissipation surface 464b and the substrate 462 remain unbonded, resulting in insufficient heat dissipation performance and joint strength of the heat dissipation element.
[0032] (4) It is necessary to pay attention to the depth of the joint jig 463 rotating at high speed between the heat dissipation surfaces 464b of each small fin 464, otherwise the joint jig 463 will move under the situation of contacting each heat dissipation surface 464b, and the Make joining work complicated and difficult
[0039] However, in order to further improve the performance of the heat dissipation element, it is necessary to consider increasing the thickness of the substrate, or reducing the spacing of the fins (increasing the number of fins), which will increase the overall weight of the heat dissipation element, which is comparable to light weight. Quantitative requirements run counter to
In other words, without reducing the heat dissipation performance, there is a limit to making the heat dissipation components lighter

Method used

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  • Method of joining metallic members and process for manufacturing radiation member
  • Method of joining metallic members and process for manufacturing radiation member
  • Method of joining metallic members and process for manufacturing radiation member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0608] Set the width w of the flat surface of the circumferential surface of different joining jigs 1 (mm), groove width w 2 (mm), the ratio of the width of the flat part to the width of the groove w 1 / w 2 Finally, the experimental results of joint quality, appearance and mechanical load are shown in Table 5.

[0609] Table five

[0610]

[0611] ◎: Good / ×: Poor

[0612] ◎: Good / △: Lots of chips / ×: Lots of burrs

[0613] ◎: Light load / ○: Below the specified conditions of the motor

[0614] △: Above the specified conditions of the motor

[0615] ×: Motor stops due to continuous use

[0616] It can be seen from Table 5 that when w 1 / w 2 Too small (comparative example 1-2), because the surface condition of the copper plate will be similar to being cut by the bonding jig, the amount of frictional heat generated by the bonding jig will be larger, the mechanical load will be smaller, and the copper plate will remain on the copper plate after bonding The amo...

Embodiment 2

[0619] After setting the inclination angle of the grooves on the circumferential surface of different bonding fixtures relative to the rotation direction and the number of grooves, the experimental results of the bonding quality, appearance, and mechanical load are shown in Table 6. On the other hand, only in the conditions of Comparative Example 2-2, the width of the joining jig was set to 10 mm.

[0620] Table six

[0621]

[0622] ◎: Good / ×: Poor

[0623] ◎: Good / △: Lots of chips / ×: Lots of burrs

[0624] ◎: Light load / ○: Below the specified conditions of the motor

[0625] △: Above the specified conditions of the motor

[0626] ×: Motor stops due to continuous use

[0627] It can be seen from Table 6 that when the inclination angle of the groove is less than 0.5° (comparative example 2-2), the mechanical load is small, and the plasticized metal accumulated in the groove cannot be sent out sequentially along the width direction of the bonding jig , after ...

Embodiment 3

[0631] After setting the depth of grooves on the circumferential surface of different bonding jigs, the experimental results of bonding quality, appearance, and mechanical load are shown in Table 7.

[0632] Table seven

[0633]

[0634] ◎: Good / ×: Poor

[0635] ◎: Good / △: Lots of chips / ×: Lots of burrs

[0636] ◎: Light load / ○: Below the specified conditions of the motor

[0637] △: Above the specified conditions of the motor

[0638] ×: Motor stops due to continuous use

[0639] It can be seen from Table 7 that when the depth of the groove is less than 0.30mm (comparative example 3-1), the plasticized metal will accumulate inside the groove, which reduces the amount of frictional heat generated by the joining jig, making it impossible to work. sufficient bonding; on the other hand, when the depth of the groove is greater than 1.2mm (comparative example 3-2), because the surface condition of the copper plate will be similar to being cut by the bonding jig, t...

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Abstract

A method of joining two metallic members of different melting points piled on each other, which enables obtaining stable joined part quality and enables junction of large metallic members of complex configuration. Two or more metallic members (aluminum member (101) and copper member (102)) are joined to each other through a process comprising arranging two or more metallic members (aluminum member (101) and copper member (102)) so that these are piled on each other in the order of highness of melting point and moving the circumferential face of tool main body (103a) of disk-shaped junction tool (103) capable of rotating in the circumferential direction, while in the piling portion pressing the same in the surface (102a) of metallic member (copper member (102)) having the highest melting point among those of the metallic members, along the surface (102a) of metallic member (copper member (102)).

Description

[0001] The application number is 03820060.0 (international application number is PCT / JP2003 / 010064), the application date is August 7, 2003, and the title of the invention is "element joining method, metal element joining method, heat dissipation element and its manufacturing method, heat dissipation element The divisional application of the invention patent application for manufacturing jigs and radiators. technical field [0002] The first group of the present invention relates to a method of overlapping and joining metal elements having different melting points, and to a heat dissipation element having excellent bonding strength and a method of manufacturing a heat dissipation element having excellent bonding efficiency. [0003] The second group of the present invention relates to a method of superimposing and bonding a plurality of plate materials having a certain distance therebetween to one surface of a substrate, and also relates to the manufacture of cooling elements f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26B23K101/00H01L23/40H01L23/36H01L23/373H01L23/427H01L23/467
Inventor 堀久司堀田元司加濑泽善正齐藤久男南田刚牧田慎也江藤节樋野治道
Owner NIPPON LIGHT METAL CO LTD
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