Exhaust pipe based laser welding plate gap control method

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 ...

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