Die forging forming process for engine cylinder barrel

Abstract

The invention discloses a die forging forming process for an engine cylinder barrel. According to the process, a steel pipe with the outer circle being 175 mm and the inner diameter being 142 mm is used, the steel pipe is heated in a heating furnace to 1,150 DEG C to 1,160 DEG C, and then the steel pipe is quickly moved into a hydraulic press mold cavity; and then press head inner hole positioning is used for forming a closed space in the mold cavity, under the pressure effect of a hydraulic press, the steel pipe is subjected to upsetting by a press head for 20 s, and the steel pipe is forgedinto the flange-shaped cylinder barrel in the mold cavity. The die forging forming process is adopted, the steel pipe with the outer circle being 175 mm and the inner diameter being 142 mm is heatedto be forged into the cylinder barrel in the hydraulic press at a time, the process is simple, operation is easy, the die forging forming process enables the cylinder barrel to obtain metal streamlineand dense metal structures distributed in the axial direction, the good mechanical property is achieved, the forging quality is improved, and the material cost is saved.

Description

technical field [0001] The invention relates to the technical field of forging processing, and more specifically, relates to a die forging forming process of an engine cylinder. Background technique [0002] The engine cylinder is a key part of the engine, the quality of the cylinder directly affects the performance of the engine. At present, the engine cylinder is produced by mechanical processing. This processing technology is to turn the outer circle of the steel pipe from 184mm to 170mm. There is a lot of waste of raw materials, and the metal flow line of the raw materials is cut off at the root of the flange, which is easy to cause The flange and the cylinder body fall off, resulting in a high scrap rate. Contents of the invention [0003] The object of the present invention is to provide a die forging process for engine cylinders to improve the quality of forgings and save material costs in view of the above-mentioned deficiencies in the prior art. [0004] In orde...

AI Technical Summary

Problems solved by technology

At present, the engine cylinder is produced by mechanical processing. This processing technology is to turn the outer circle of the steel pipe from 184mm to 170mm. There is a lot of waste of raw materials, and the metal flow line of the raw materials is cut off at the root of the flange, which is easy to cause The flange and the cylinder body fall off, resulting in a high scrap rate