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Exhaust pipe based laser welding plate gap control method

A technology of laser welding and control method, applied in laser welding equipment, welding equipment, manufacturing tools, etc., to achieve the effect of not affecting the forming quality and avoiding the surface quality problem of the plate

Inactive Publication Date: 2017-01-11
CHENGDU LINGCHUAN SPECIAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to remove the hydrogen gas in time without forming a collapse, and the purpose is to provide a gap control method based on the laser welding plate of the exhaust pipe to solve the problem of removing the hydrogen gas in time without forming a collapse question
Since the movement of the welding seam can only be reduced but not eliminated, it is necessary to set the thickness of the material opening within a certain range on the side of the mold surface with different thickness at the welding seam

Method used

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Effect test

Embodiment

[0016] The present invention is a method for controlling the clearance of a laser-welded plate based on an exhaust pipe. The thickness opening of the material opening is set at intervals. The thickness opening is open on the thinner side of the material. The area of ​​the binder surface is correspondingly larger, and the corresponding part of the die and punch is correspondingly smaller. Using the punch makes the laser melting During the welding process, there is a gap between the clamped outer plate and the inner plate in the overlapping area. The mold structure is used to form the weld part first to control the movement of the weld, and a reasonable reinforcing rib is designed near the weld. The mold structure first shapes the weld area to control the movement of the weld. The punch is formed by stamping again on the stamped inner plate with a punch and a die. The welds are straight lines. The punch is on the outer surface of the inner plate. In this embodiment, a punch i...

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PUM

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Abstract

The invention discloses an exhaust pipe based laser welding plate gap control method. The exhaust pipe based laser welding plate gap control method adopts a laser welding plate, wherein the laser welding plate comprises an inner plate and an outer plate. The gap control method comprises the steps that a material inlet open thickness face is set between the inner plate and the outer plate, the open thickness face is open for the thin material side, an open material pressing face zone is correspondingly large, the concave die and convex die corresponding position is correspondingly smaller, a gap is reserved in a lap joint zone between the clamped outer plate and the inner plate in the laser fusion welding process by utilizing a convex die, a weld joint position is firstly formed through a die structure, accordingly movement of a weld joint is controlled, reasonable reinforcing ribs are designed at the position close to the weld joint, the weld joint position is firstly formed through a die structure, and accordingly movement of the weld joint is controlled. The convex die is formed by conducting re-stamping on the stamped and formed inner plate by a puncher pin and a press die. The weld joint is a straight line.

Description

technical field [0001] The invention relates to a gap control method based on an exhaust pipe, in particular to a gap control method for a laser welding plate based on an exhaust pipe. Background technique [0002] The exhaust pipe is installed between the engine exhaust manifold and the muffler, so that the entire exhaust system is flexibly connected, thereby reducing vibration and noise, facilitating installation and prolonging the life of the exhaust muffler system. Exhaust pipes are mainly used for light vehicles, mini-cars and passenger cars, motorcycles. The structure of the exhaust pipe is a double-layer corrugated pipe covered with a steel mesh sleeve, and the straight edge sections at both ends are covered with snap rings, in order to make the noise reduction effect better. , The bellows can be equipped with expansion joints or mesh sleeves. The main material of the exhaust pipe is stainless steel, and the ferrule and connecting pipe can be made of stainless steel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/262B23K26/02B23K101/06
CPCB23K26/262B23K26/02B23K2101/06
Inventor 王淑娟何晓鸣
Owner CHENGDU LINGCHUAN SPECIAL IND
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