Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Weathering steel welding method

A welding method and technology of weathering steel, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of poor weldability and large cold cracking tendency.

Pending Publication Date: 2021-01-19
GUANGZHOU ZENGLI STEEL STRUCTURE
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a weathering steel welding method, which solves the problem that the higher the carbon equivalent of the weathering steel, the greater the hardening tendency, the greater the cold cracking tendency of the welding heat affected zone, and the poorer the weldability. The alloy structure of the weld after welding also needs to meet the effect of atmospheric corrosion resistance

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
  • Weathering steel welding method
  • Weathering steel welding method
  • Weathering steel welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Welding preparation: Get the weather-resistant steel tower hanging plate to be welded, and the special fixture for welding the hanging plate. The fixture is equipped with copper block, water cooling system, locking valve, etc., and the copper block is embedded in the groove on the top of the fixture. The water cooling system is located on the At the bottom of the copper block, the locking valve is located on the right side of the top of the fixture. Butt and assemble the weather-resistant steel hang-on angle steel and the hang-on plate. The assembling interval is kept at 2-3mm, and the amount of misalignment is less than 1mm; Hanging plate: first lay the flux inside the groove of the copper block, then place the hanging plate on the fixture, and the assembly gap of the hanging plate should be placed in the middle above the groove of the copper block, and the right end of the hanging plate should be placed Lock the inside of the valve, and then lock and fix the hanging pl...

Embodiment 2

[0031] In embodiment one, add following operation:

[0032] In step 1, the grade of the weathering steel to be welded is Q415NH, and the joint form of the structural parts is a butt joint. The weathering steel to be welded is a high weathering steel with a yield strength of 415. The steel contains Cr, Ni and other trace elements; submerged arc welding is adopted The method can effectively reduce the content of harmful impurities such as S and P in the weld through flux protection.

[0033] Welding preparation: Get the weather-resistant steel tower hanging plate to be welded, and the special fixture for welding the hanging plate. The fixture is equipped with copper block, water cooling system, locking valve, etc., and the copper block is embedded in the groove on the top of the fixture. The water cooling system is located on the At the bottom of the copper block, the locking valve is located on the right side of the top of the fixture. Butt and assemble the weather-resistant st...

Embodiment 3

[0035] In embodiment two, add following operation:

[0036] In step 1, the water cooling system cooperates with the copper block to form a water-cooled copper block for easy cooling.

[0037] Welding preparation: Get the weather-resistant steel tower hanging plate to be welded, and the special fixture for welding the hanging plate. The fixture is equipped with copper block, water cooling system, locking valve, etc., and the copper block is embedded in the groove on the top of the fixture. The water cooling system is located on the At the bottom of the copper block, the locking valve is located on the right side of the top of the fixture. Butt and assemble the weather-resistant steel hang-on angle steel and the hang-on plate. The assembling interval is kept at 2-3mm, and the amount of misalignment is less than 1mm; Hanging plate: first lay the flux inside the groove of the copper block, then place the hanging plate on the fixture, and the assembly gap of the hanging plate shoul...

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 relates to the technical field of welding, in particular to a weathering steel welding method. The method comprises the following steps of welding preparation, wherein a to-be-welded weathering steel tower wire hanging plate and a fixture special for wire hanging plate welding are obtained, a copper block, a water cooling system, a locking valve and the like are assembled on the fixture, the copper block is embedded into a groove in the top of the fixture, the water cooling system is located at the bottom of the copper block, the locking valve is located on the right side of thetop of the fixture, to-be-welded weathering steel wire hanging angle steel and the wire hanging plate are spliced in a butt joint manner, the splicing interval is kept at 2-3 mm, and the splicing misalignment amount is smaller than 1 mm; and wire hanging plate locking, wherein welding flux is firstly laid in a groove of the copper block, and then the wire hanging plate is placed on the fixture. Bymeans of the method, the fixture special for welding is additionally arranged, deformation during welding can be avoided, the fixture is provided with the water-cooled copper block, the welding fluxis laid in the groove of the copper block, the phenomenon of weld joint breakdown during backing welding of submerged-arc welding can be effectively controlled, and the welding flux laid on the back face can force back face weld joint forming, so that the root back chipping procedure is omitted.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a weather-resistant steel welding method. Background technique [0002] Weathering steel is atmospheric corrosion-resistant steel, which is a low-alloy steel series between ordinary steel and stainless steel. It has been widely used in power transmission and transformation tower projects in recent years. Compared with the galvanized plain carbon steel transmission towers that are widely used in the country, weathering steel transmission towers eliminate the traditional hot-dip galvanizing process, which can reduce pollution to the atmosphere and soil environment; at the same time, it can also avoid traditional heat treatment Dip galvanized anti-corrosion process to reduce the post-corrosion maintenance cost of the iron tower. In addition, the weathering steel transmission tower can also solve the problem of galvanized layer shedding of the tower in the strong sandstorm area in ...

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): B23K9/18B23K9/235B23K9/32
CPCB23K9/18B23K9/235B23K9/32
Inventor 吴凡张帝起张洋蔡亮
Owner GUANGZHOU ZENGLI STEEL STRUCTURE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com