Automatic processing process of stainless steel seamless steel pipe

A seamless steel pipe and automatic processing technology, applied in the field of metal processing, can solve the problem of large gap between double-layer composite pipes and pipes

Pending Publication Date: 2021-09-03
孟祥平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the shortcomings of the existing technology, solve the problem of large seam gaps in double-layer composite pipes, improve the strength of the steel pipe and the pull-off force when the layers of the double-layer

Method used

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  • Automatic processing process of stainless steel seamless steel pipe
  • Automatic processing process of stainless steel seamless steel pipe
  • Automatic processing process of stainless steel seamless steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment one: a kind of automatic processing technique of stainless steel seamless steel pipe, comprises the following steps:

[0055] S1: Clean and derust the surface of the round steel, remove the oxide layer and defect layer on the surface, and then cut it to obtain the steel section;

[0056] S2: On the basis of step S1, use a piercer to perforate the steel section to obtain a capillary tube;

[0057] S3: On the basis of step S2, cold-roll the capillary tube to obtain a structural tube; the structural tube includes an outer tube and an inner tube; the inner diameter of the outer tube is larger than the outer diameter of the inner tube; the outer tube The thickness of the layer pipe is greater than the thickness of the inner layer pipe;

[0058] S4: On the basis of step S3, the inner tube is inserted into the outer tube to obtain a tube blank, and then the tube blank is cold-expanded using a seamless steel tube cold expansion device to expand the tube diameter unt...

Embodiment 2

[0066] Embodiment 2: This embodiment provides an automatic processing technology for stainless steel seamless steel pipes. The processing technology is consistent with the processing technology in Embodiment 1, but in the processing process, the inner tube and the outer tube are not Insert reinforcing ribs.

Embodiment 3

[0067] Embodiment 3: This embodiment provides an automatic processing technology for stainless steel seamless steel pipes. The processing technology is consistent with the processing technology in Embodiment 1. The outer wall of the layer pipe and the inner wall of the outer layer pipe have not been sandblasted.

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PUM

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Abstract

The invention belongs to the technical field of metal processing, and particularly relates to an automatic processing process of a stainless steel seamless steel pipe. The automatic processing process comprises the following steps: S1, the surface of round steel is cleaned and derusted, and the round steel is cut off to obtain steel sections; S2, on the basis of the step S1, a perforating machine is used for perforating the steel sections, and tubular billets are obtained; S3, on the basis of the step S2, the tubular billets are subjected to cold rolling, and structural pipes are obtained; S4, on the basis of the step S3, pipe blanks are subjected to cold expanding treatment, and composite pipes are obtained; S5, on the basis of the step S4, the composite pipes are subjected to bright solution treatment, then the surfaces of the composite pipes are subjected to anti-oxidation and anti-corrosion treatment, and the finished seamless steel pipes are obtained; and S6, on the basis of the step S5, the finished seamless steel pipes are straightened, then the finished seamless steel pipes are detected, and the finished seamless steel pipes which are detected to be qualified are packaged and warehoused after the surfaces are marked. The prepared steel pipes are high in strength, good in quality, stable in structure performance and high in practicability.

Description

technical field [0001] The invention belongs to the technical field of metal processing, in particular to an automatic processing technology for stainless steel seamless steel pipes. Background technique [0002] Seamless steel pipe refers to a steel pipe made of a single piece of metal with no joints on the surface. According to the production method, it is divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, etc. Seamless steel pipe has the advantages of high tensile strength, high elasticity, and excellent creep resistance. Most of the existing seamless steel pipes are hollow pipes, which are sufficient for general environments, but in some special occasions, such as roads, tunnels, bridges, etc., ordinary seamless steel pipes are not strong enough, have low bearing capacity, and are easy to break. The composite seamless steel pipe can effectively improve the strength and bearing capacity of the seamless steel pipe, reduce the possibility of bending, deformat...

Claims

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Application Information

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IPC IPC(8): B21C37/06C21D8/10
CPCB21C37/06C21D8/105
Inventor 孟祥平李士环
Owner 孟祥平
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