Seamless steel pipe production process for bearings

Abstract

The invention discloses a seamless steel pipe production process for bearings. The production process comprises the following steps: (1) heating: steel blanks are put in a heating furnace for heating;(2) perforation: the steel blanks heated in the step (1) are perforated to obtain pipe blanks; (3) two-roller rolling: a two-roller rolling machine uses two-roller rolling for wall homogenization anddiameter reduction on the pipe blanks obtained in the step (2); (4) tension diameter reduction: a tension diameter reducing machine is used for diameter reduction on the pipe blanks in the step (3),so that the outer surfaces of the pipe blanks are further smoothened; (5) annealing and spheroidizing: on the basis of afterheat of the pipe blanks in the step (4), the pipe blanks in the step (4) areannealed and spheroidized; and (6) water explosion: a water explosion pool is used for water explosion on the pipe blanks in the step (5) to loosen and remove scales on the surfaces to obtain pipes.The process has no need to use acid washing and lubricating medicine liquid, so that the production period is shortened, the energy consumption is lower, the acid washing and lubricating medicine liquid is not consumed, and the problem of environmental pollution by the acid washing and lubricating medicine liquid cannot occur.

Description

technical field [0001] The invention relates to a production process of seamless steel pipes, in particular to a production process of seamless steel pipes for bearings. Background technique [0002] The existing production process generally includes the following steps, heating-piercing-cold drawing / cold rolling-pickling, phosphating, saponification-cold drawing / cold rolling-annealing-straightening, specifically, the above-mentioned seamless steel pipe for bearings The production process, usually the tube blank is hot-rolled and pierced first to obtain the tube material, and then the tube material is subjected to the first cold drawing / cold rolling process, and after the first cold drawing / cold rolling process, it needs to be carried out several times The cold drawing / cold rolling process enables the product to meet the required quality parameters. The subsequent cold drawing / cold rolling process requires head treatment, heat treatment, and pickling and lubrication treatmen...

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a production process of seamless steel pipes for bearings. The production process of the device is simple and does not require repeated cold drawing / cold rolling, thereby reducing the heating required for repeated cold drawing / cold rolling. , Heading, pickling and lubrication process, one is to reduce the process steps, the other is to reduce the heating energy consumption, and the third is to avoid the pickling and lubrication process, no need to use pickling and lubrication liquid, so that the production cycle is shorter and the energy consumption is smaller , does not consume pickling and lubricating liquid, and will not pollute the environment with pickling and lubricating liquid

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