Unlock instant, AI-driven research and patent intelligence for your innovation.

Production method of small-diameter seamless steel tube

A technology of seamless steel pipes and production methods, applied in the direction of metal rolling, etc., can solve problems affecting the quality of steel pipes, prolonging the production chain, surface quality defects, etc., and achieve the effects of cost reduction, broad application prospects, and energy saving

Pending Publication Date: 2019-03-29
太原通泽智能工程股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the production chain is extended, the cost and metal consumption are increased, and the continuous c

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test
No Example Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a production method of a small-diameter seamless steel tube. The production method comprises the following steps that diameter reducing operation is carried out on a hollow round tube blank to obtain a capillary tube with a predetermined diameter, and the capillary tube is subjected to continuous rolling treatment to obtain a finished product of the small-diameter seamless steel tube. According to the production method, the situations that a continuous casting round tube blank with a larger diameter is required to be rolled into a round tube with a smaller diameter by using a bar material rolling mill, and then the round tube with the smaller diameter can be used for producing a small-diameter hot-rolled seamless steel tube on a limiting core bar continuous rolling tube machine are avoided.

Description

technical field [0001] The invention belongs to the field of seamless steel pipe production, and in particular relates to a production method of a small-diameter seamless steel pipe. Background technique [0002] Most of the small-diameter seamless steel pipes in my country use large-diameter hot-rolled seamless steel pipes as blanks and are produced by cold rolling (drawing). Although the products produced by this process are of good quality, the cost is high and the yield is low. Surface treatment (mainly pickling) is required before cold rolling (drawing), polluting the environment. [0003] If the diameter of the tube blank is large, the diameter of the empty tube will be large. When the large-diameter waste pipe is reduced by a large amount of diameter reduction on the tension reducing machine, it will cause uneven wall thickness of the steel pipe, defects in the inner square and surface quality, and in severe cases, the steel pipe will be scrapped. Moreover, the wall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B21B23/00
CPCB21B23/00
Inventor 杨泽成海涛
Owner 太原通泽智能工程股份有限公司