Steel tube manufacturing method

A manufacturing method and technology of steel pipes, which are applied in the field of steel pipe manufacturing, can solve problems such as the weak load-bearing capacity of steel pipes and affect the service life of steel pipes, and achieve the effects of enhanced load-bearing capacity, extended service life, and reduced use costs

Inactive Publication Date: 2015-10-07
HUNAN SHENGLI XIANGGANG STEEL PIPE CO LTD
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The application range of steel pipe is very wide, but in the normal use process, there are problems such as the

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steel tube manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] The manufacturing method of the steel pipe of the present invention, the schematic diagram of the process structure is as figure 1 As shown, including the following steps:

[0031] The new material Q345GJC-Z15 pipeline is adopted, which includes the following mass percentages: C≤0.20; Si≤0.55; Mn≤1.60; P≤0.025; S≤0.015; V 0.020-0.150; Nb 0.015-0.060; S≤ 0.010; Ti 0.010-0.030; Als≥0.015; Cr≤0.30; Cu≤0.30; Ni≤0.30; the balance is the base Fe;

[0032] Use ultrasonic flaw detection method to inspect steel plate raw materials;

[0033] Initiating and extinguishing arc plate welding: welding the initiating and extinguishing arc plates at both ends of the steel plate, so that the pipe body welding reduces quality problems;

[0034] Steel plate surface cleaning: remove the floating rust on the steel plate surface;

[0035] Steel plate milling: mill the steel plate with the corresponding cutter to make the upper and lower bevels, the upper bevel angle is 40°±0.5, the lower bevel angle...

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

PUM

No PUM Login to view more

Abstract

The invention discloses a steel tube manufacturing method. The steel tube manufacturing method comprises the steps of selection and inspection of raw materials, welding of arc striking and extinguishing plates, edge milling of a steel plate, prebending of the steel plate, forming of a JCO forming machine, internal and external welding, cut-off of the arc striking and extinguishing plates, weld flaw inspection, mechanical hole enlargement, rounding of the steel plate and other steps. According to the steel tube manufacturing method, novel Q345GJC-Z15 pipes are selected as the steel plate raw materials; the arc striking and extinguishing plates can ensure the welding quality; an obtained steel tube is firm and tight in welding, the influence of radial force on the service life of the steel tube can be reduced, and therefore the service life of the steel tube is prolonged; meanwhile, the bearing capacity of the steel tube is enhanced, and the use cost is lowered.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a method for manufacturing a steel pipe. Background technique [0002] The application range of steel pipe is very wide, but in the normal use process, there are problems such as the steel pipe's load-bearing capacity is not strong, and the radial force will affect the service life of the steel pipe. Therefore, it is of great significance to reduce the influence of radial force on the steel pipe and enhance the load-bearing capacity of the steel pipe. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a steel pipe manufacturing method which enhances the load-bearing capacity of the steel pipe and reduces the use cost. [0004] In order to solve the problems of the technologies described above, the technical solution of the present invention is: [0005] A method for manufacturing steel pipes, comprising the steps of: ...

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): B23P15/00C22C38/14C22C38/16C22C38/28C22C38/38C22C38/50C22C38/58
CPCB23P15/00C22C38/002C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16C22C38/28C22C38/38C22C38/50C22C38/58
Inventor 李延丰郑家红宫益涛刘春王潇朱旭庄绪强
Owner HUNAN SHENGLI XIANGGANG STEEL PIPE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap