Forging process of pump body for exhaust gas treatment

Abstract

The invention discloses a forging process of a pump body for exhaust gas treatment, comprising the following steps: (1) selecting a blank, selecting a long strip type 6082 aluminum alloy bar material,and then cutting the blank into sections as needed; (2) induction heating, placing the cut blank sections in a medium frequency induction furnace for heating, and heating to 420 DEG C-440 DEG C; (3)precision forging demoulding, placing the heated blank in a precision forging lower die, forging to obtain a precise shape, and relying on a forging machine ejection mechanism to demold parts; (4) water cooling, placing the forged parts in an automatic water cooling tank, and cooling for 1 min; (5) trimming, placing the water-cooled parts into a trimming mold, and cutting off flash edges; and (6)heat treatment, performing heat treatment on forged parts, which is divided into two steps of solid solution quenching and artificial aging, wherein in the solid solution quenching stage, heating to 535 DEG C-550 DEG C, and then holding for 4 h, and then carrying out water quenching; and in the artificial aging stage, heating to 180 DEG C and then holding for 8 h.

Description

technical field [0001] The invention relates to a forging process of a pump body used for exhaust gas treatment, and belongs to the technical field of forging process. Background technique [0002] The pump body in the automobile exhaust treatment device is the core component of the whole device. Its working environment is harsh and it has been serving in high temperature and corrosive gases for a long time. One end of the part is cylindrical with a small cross-sectional area, and the other end is approximately square with a large cross-sectional area, and there are two high-height bosses on the side of the part. The longitudinal cross-sectional area of ​​the part changes greatly, and there are two For a high-height boss, insufficient punching and folding defects are prone to occur during the forging process, making forging difficult. [0003] The material of this part is 6082 aluminum alloy, which belongs to aluminum alloy that can be strengthened by heat treatment. It has...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a forging process for the pump body used for exhaust gas treatment. By adopting a unique shape of the blank, one fire and one forging are adopted, forming at one time, without forging defects, good forming effect, and increased The water cooling process after forging successfully solved the problem of difficult edge trimming after forging