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

Welding method of ocean platform module wall board gas shielded flux-cored down weld

A welding method and offshore platform technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems such as the inability to effectively control the welding deformation of the block wall skin plate, and achieve the reduction of post-welding grinding workload, shallow penetration, and forming beautiful effect

Inactive Publication Date: 2010-09-08
CHINA NAT OFFSHORE OIL CORP +1
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding of block wall skin boards usually adopts welding methods such as manual arc welding, carbon dioxide gas shielded flux core welding, STT (surface tension transition) welding, etc. These processes can solve the welding deformation of block wall skin boards to a certain extent problem, but it cannot effectively control the welding deformation of the panel wall panels

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

Embodiment 1

[0014] Welding of carbon steel wall skin panels of offshore platform modules. The material of the wall skin board is steel, the model is GB712-2000Q235B, and the thickness of the board layer is 10mm. It is welded by using the welding method of the present invention to protect the flux core with carbon dioxide gas:

[0015] 1. Preparation before welding:

[0016] ①Preparing the groove, grinding the groove, the groove form is I type, the groove gap is 5mm, and the groove and the range of 15mm on both sides are polished and cleaned until the metallic luster is exposed;

[0017] ②Grind the 15mm range around the groove on both sides of the steel plate to remove oil, rust and other impurities;

[0018] ③ Preheating before welding, preheating the welding part and its surrounding area of ​​75mm, the preheating temperature is 28 ℃, and the preheating method is heated by baking handle;

[0019] ④The welding material is Kunshan Tiantai flux-cored welding wire, the model is E71T-1TWE-71...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a welding method of an ocean platform module wall board gas shielded flux-cored down weld, comprising the following steps of: preparing a welding joint groove and cleaning; assembling interfaces at the joint of two wall boards; preheating a welded position before welding; and carrying out preparing working procedures such as setting a welding method and welding parameters, setting welding materials and setting shielding gas and parameters, welding working procedure and treatment working procedure after welding, wherein the welding materials in the preparing working procedure before welding are set to be flux-cored welding wire, and the shielding gas is set to be CO2. The welding method has the improvement in that the welding joint groove in the preparing working procedure before welding is I-shaped, and the welding way is set to be vertical down weld. The invention can improve the welding speed, achieves attractive welded joint formation, greatly lowers the welding distortion, reduces the workload for wall welding deformation correction after welding and welded joint polishing, and efficiently improves the working efficiency.

Description

technical field [0001] The invention relates to a welding method, in particular to a welding method for gas-shielded flux-core downward welding of a wall skin plate of an offshore platform block. Background technique [0002] The walls on the offshore platform block mainly include windshield walls and firewalls. The material of the wall panels of the windbreak walls and firewalls is generally carbon steel. The carbon steel model is Q235B, and the thickness of the wall panels is between 6 and 10mm. . Due to the small thickness of the ply, the deformation of the ply is relatively large during welding, and deformation correction is often required after welding to meet the processing size requirements. Therefore, overcoming the welding deformation of wall skin panels has always been a subject to be solved in this industry. The welding of block wall skin boards usually adopts welding methods such as manual arc welding, carbon dioxide gas shielded flux core welding, STT (surface ...

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): B23K33/00B23K35/12B23K9/095B23K9/16B23K9/02B23K9/235B23K101/18
Inventor 杨炳发曹军徐玉强王福祥韦生孙有辉马丽
Owner CHINA NAT OFFSHORE OIL CORP
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