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Bonding technology used between metal and metal

An indirect and technological technology, applied in the field of sheet metal, can solve the problems of extensibility and toughness deterioration, crystallization cannot be changed, toughness cannot be restored, etc., and achieve the effects of shortened processing time, easy operation and improved production efficiency

Inactive Publication Date: 2016-01-27
赵敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ferritic stainless steel will have coarse crystals in the heated part, and the elongation and toughness will be significantly deteriorated compared with the base metal
After heat treatment at 700~750℃, although the extensibility and stretchability will be restored, the coarse crystallization cannot be changed, and the toughness cannot be restored.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the examples.

[0034] A circular protrusion is first processed on the end face of the metal bar to be combined, and an oblique inward groove-limiting groove is processed below the head of the protrusion, and the head of the protrusion forms a ring-shaped protrusion- limit ring. Certainly material is not limited to metal round bar, and its shape can be various solid and hollow metal materials such as arbitrary polygonal bars, rotating shafts, pipes, studs, nuts.

[0035] Before joining, the sheet metal is processed in 2 stamping operations. First, punch a round hole at the corresponding position of the plate that matches the outer diameter of the limit ring of the material to be joined; second, perform flanging processing on the round hole formed in the first process, and the height of the flanging can be determined according to Calculated from the protrusion height dimension of the limit ring...

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Abstract

The invention relates to the technical field of metal plates, in particular to a bonding technology used between metal and metal. The bonding technology comprises the following steps that (1) a metal component to be connected is provided, a protrusion is machined on the end face of the metal component to be connected, a groove is machined in the portion below the head of the protrusion, and the head of the protrusion forms an annular protrusion; (2) a metal sheet is provided, a through hole conforming to the size of the outer diameter of the annular protrusion is punched in the metal sheet, and the edge of the through hole is machined into a flanging; and (3) the annular protrusion is put into the flanging hole of the metal sheet and subjected to extrusion machining, and the flanging of the metal sheet is pressed into the groove of the metal component to be connected, so that the metal sheet is tightly bonded with the metal component to be connected. Compared with the prior art, the bonding technology makes the strength between the metal sheet and the metal component to be connected be consistent and free of the limitation of texture.

Description

technical field [0001] The invention relates to the technical field of sheet metal, in particular to an intermetallic bonding process. Background technique [0002] At present, the commonly used metal-to-metal bonding processes are: [0003] (1) Connection by fasteners: one side of the parts is threaded, the other side is a through hole, and then fixed with bolts; or both sides are through holes, and then fixed with bolts and nuts; [0004] (2) Electric welding connection: Continuously join the joints of the materials, pass heat or pressure or both, and add some fusion agent if necessary, pass current while pressurizing on both sides of the plate, and use its Resistance to heat to melt and join iron plates; [0005] (3) Welding: A method of joining multiple parts without melting the alloy (such as solder) with a melting point lower than that of the parts to be welded as a binder so that the base metal itself does not melt. [0006] When joining with fasteners such as bolt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D28/02B21D39/04B23P11/00
Inventor 赵敏
Owner 赵敏
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