Production method of automobile steering pipe column seamless steel pipe

Abstract

The invention provides a production method of an automobile steering pipe column seamless steel pipe. The production method includes the following steps of laying off of a sawing machine, and punchingof a center hole; heating of a pipe blank, hot rolling hole punching and producing a steel billet into a tubular billet; cutting of chamfers at the head end and the tail end; preliminary acid pickling and grinding and modifying, acid pickling, phosphorizing and saponifying; two-roller cold rolling and oil removal heat treatment of the pipe blank; dog hammering treatment of the pipe blank after heat treatment is completed; acid pickling, phosphorizing, saponifying and lubricating treatment of a middle pipe; cold drawing treatment; and following treatment and storage. The traditional machiningcost is greatly reduced, and the purposes that the procedures are simplified, the process is optimized, the production efficiency is improved, and the cost is reduced are achieved.

Description

technical field [0001] The invention relates to the technical field of manufacturing seamless steel pipe products, in particular to a production method of a seamless steel pipe for an automobile steering column. Background technique [0002] With the rapid development of my country's automobile industry in recent years, the competition in the automobile market has become increasingly fierce. Seamless steel pipes are used as raw materials for the production of auto parts, and the seamless steel pipes for automobile steering columns are mainly special-shaped seamless steel pipes (such as figure 1 shown), inside fairways (such as figure 2 As shown) when a vehicle accident occurs, the steering wheel collapses downward to reduce personal injury and at the same time satisfy the adjustment function of the steering wheel's up and down height, while the traditional process is produced by machining (milling machine, rotary section), which has low processing efficiency and high cost....

AI Technical Summary

Problems solved by technology

Seamless steel pipes are used as raw materials for the production of auto parts, and the seamless steel pipes for automobile steering columns are mainly special-shaped seamless steel pipes (such as figure 1 shown), inside fairways (such as figure 2 As shown) in the event of a vehicle accident, the steering wheel collapses downward to reduce personal injury and at the same time satisfy the adjustment function of the steering wheel's up and down height, while the traditional process is produced by machining (milling machine, rotary section), which has low processing efficiency and high cost

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