The invention relates to a manufacturing method of a hollow half shaft of a heavy-load automobile and the hollow half shaft. The manufacturing method comprises the following steps: a steel bar is forged to form a flange plate blank; a seamless steel pipe is subjected to rotary swaging to be machined into a variable-cross-section hollow pipe; the hollow pipe and the flange plate blank are welded; machining and heat treatment are conducted on the welded hollow pipe and the flange plate blank to form the hollow half shaft. By the adoption of the rotary swaging process, the machined hollow pipe ishigh in precision, uniform in wall thickness and good in straightness, and meanwhile due to the fact that precision rotary swaging belongs to cold forming, the inner surface and the outer surface ofthe hollow pipe obtained through the process are good in quality, decarburization is basically avoided, a metal flow line is complete, and strength is high.
本发明涉及一种重载汽车空心半轴的制造方法及空心半轴,其包括以下步骤:将钢棒锻造形成法兰盘毛坯;将无缝钢管旋锻加工成变截面的空心管;将所述空心管与所述法兰盘毛坯焊接;对焊接后的所述空心管与所述法兰盘毛坯进行机加工及热处理形成空心半轴;采用旋锻工艺的方法,使得加工出来的所述空心管精度高,壁厚均匀,且直线度好,同时,也由于精密旋锻属于冷成型,通过该工艺获得的所述空心管内表面和外表面质量好,基本不产生脱碳,且金属流线完整,强度高。
Manufacturing method of hollow half shaft of heavy-load automobile and hollow half shaft
一种重载汽车空心半轴的制造方法及空心半轴
2021-01-19
Patent
Elektronische Ressource
Chinesisch
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