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Method for manufacturing heat radiator

A manufacturing method and radiator technology, applied in manufacturing tools, heat exchange equipment, applications, etc., can solve problems such as difficulty in correction, deformation of fins, and increased load on friction stirring devices, and achieve the effect of improving flatness

Active Publication Date: 2014-04-09
NIPPON LIGHT METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the case of joints between metal plates, the deformation caused by heat shrinkage can be corrected by rolling forming, etc., but in the case of metal members with many fins, it is difficult to perform such corrections.
[0007] On the other hand, when the thickness of the bottom plate is large, friction stir welding must be performed using a large rotary tool in order to insert the pin of the rotary tool deep into the mating part. However, once the rotary tool becomes large , there is a problem that the load on the friction stir device becomes larger
In addition, as the size of the rotary tool increases, the amount of heat entering the metal member increases, so frictional heat may be transferred to the fins and deform the fins

Method used

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  • Method for manufacturing heat radiator
  • Method for manufacturing heat radiator
  • Method for manufacturing heat radiator

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no. 1 approach ）

[0054] Embodiments of the present invention will be described in detail with reference to the drawings. Such as figure 1As shown, in the heat sink manufacturing method of this embodiment, the heat sink 1 is manufactured by performing friction stir welding of the first metal member 2 and the second metal member 3 . Such as figure 1 As shown, the X axis represents the width direction of the first metal member 2, the Y axis represents the depth direction, and the Z axis represents the height direction. In addition, "up and down" in the following description is used for convenience of description, and has nothing to do with the use state of the heat sink.

[0055] The first metal member 2 is composed of a plate-shaped bottom plate 11 and a plurality of fins 21 arranged side by side on the lower surface of the bottom plate 11 . The fins 21 are formed vertically with respect to the bottom plate 11 on the lower surface of the bottom plate 11 . In addition, the fins 21 are arrange...

no. 2 approach ）

[0071] Next, a second embodiment of the present invention will be described. In the manufacturing method of the heat sink of the second embodiment, it is different from the first embodiment in that the plate thickness of the bottom plate 11 is large.

[0072] Such as Figure 4 As shown, the first metal member 2 is composed of a bottom plate 11 and a plurality of fins 21 arranged side by side on the lower surface of the bottom plate 11 . The structure of the fins 21 is the same as that of the first embodiment. In the bottom plate 11, the end surface 12 which opposes the 2nd metal member 3 is comprised from the outer end surface 12a, the inner end surface 12b, and the intermediate surface 12c.

[0073] The outer end surface 12 a is provided on the lower side (fin 21 side) of the bottom plate 11 . The inner end surface 12 b is provided on the upper side of the bottom plate 11 . In addition, the inner end surface 12 b is retracted (Japanese: Setback) relative to the outer end ...

no. 3 approach ）

[0090] Next, a third embodiment of the present invention will be described. In the manufacturing method of the heat sink of the third embodiment, it is different from the first embodiment in that the first metal member 2 and the second metal member 3 are joined to the back contact 31A in the joining step.

[0091] like Figure 9 As shown in (a), the first metal member 2 is composed of a bottom plate 11 and a plurality of fins 21 arranged side by side on the lower surface of the bottom plate 11 . The structure of the fins 21 is the same as that of the first embodiment. In the bottom plate 11, the end surface 12 which opposes the 2nd metal member 3 is comprised from the outer end surface 12a, the inner end surface 12b, and the intermediate surface 12c.

[0092] The outer end surface 12 a is provided on the upper side of the bottom plate 11 . The inner end surface 12b is provided on the lower side of the bottom plate. In addition, the inner end surface 12b is retracted relati...

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Abstract

A method for manufacturing a heat radiator can improve flatness, and joints a base plate (11) and metallic members (2, 3) of fins arranged side by side on the lower surface of the base plate (11) in a fricative and mixing way. The method includes a preparation step for forming a butting joint portion (J) by jointing the end faces (12, 12) of the base plate (11), and a jointing step of inserting a rotary tool (F) from the upper surface of the base plate (11) into the butting joint portion (J) to form a fricative and mixing joint. In the jointing step, the jointing process is carried out when the metallic members (2, 3) are inclined to make the butting joint portion (J) higher.

Description

technical field [0001] The invention relates to a manufacturing method of a radiator. Background technique [0002] For example, Patent Document 1 discloses a method of manufacturing a heat sink by friction stir joining metal members having a bottom plate and a plurality of fins arranged side by side on the bottom plate. In this manufacturing method, after the end surfaces of the base plates are butted together, a rotary tool is inserted from the surface of the base plate opposite to the fins to perform friction stir welding on the butted portions. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 3336277 [0006] In friction stir welding, once the metal that undergoes plastic flow due to frictional heat solidifies, thermal contraction occurs. Due to the thermal shrinkage described above, the surface side of the bottom plate of the manufactured heat sink (the side opposite to the fins in the bottom plate) may be defor...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/24
CPCB23K20/122B23K20/129B23K20/24B23K2101/14
Inventor 堀久司玉石雅敬柏原具裕清野昌宏
Owner NIPPON LIGHT METAL CO LTD
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