Argon arc welding process for narrow gap hot wire

A narrow gap, argon arc welding technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as low efficiency, increased workload of process pipeline prefabrication, and inability to adapt, so as to reduce energy consumption and welding cost The effect of improving labor intensity and welding efficiency of workers

Inactive Publication Date: 2011-11-09
CHINA NAT OFFSHORE OIL CORP +1
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of modern industrial technology and the continuous expansion of production scale, the workload of process pipeline prefabrication has greatly increased. At the same time, the diameter of process pipeline is getting larger and the wall of the pipe is getting thicker. To meet the needs of modern production development, for example, the process pipeline

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

Example Embodiment

[0015] Examples:

[0016] Use ASTM standard A106Gr.B steel pipe, specification Φ323×25.4mm for welding. The main steps are as follows:

[0017] 1. Preparation process before welding:

[0018] ①Prepare the groove, prepare a single-sided U-shaped groove by machining, with a gap of 0mm and a blunt edge of 2mm; clean the groove and both sides of the inner and outer walls until the metallic luster is exposed;

[0019] ② Butt joint assembly groove, and check that there is no defect within 20mm of the welded part and its edge;

[0020] ③Select the welding material, the welding wire adopts Jintai's JG-50 welding wire with a diameter of φ1.0mm.

[0021] 2. Bottom welding process:

[0022] Fully-automatic welding equipment is used for bottom welding, and the welding is performed counterclockwise from the 12 o'clock position. The welding parameters are set as: the diameter of the welding wire is φ1.0mm, the diameter of the tungsten electrode is φ4.0mm; the flow rate of the shielding gas argon is 24...

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
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides an argon arc welding process for a narrow gap hot wire. The process comprises pre-welding preparation processes which comprise a groove formation process, a groove butt joint assembly process, a welding material selection process and a welding parameter setting process, a bottoming welding process, a filling welding process and a surface covering welding process. In the improvement of the process, a groove is a narrow gap U-shaped groove; a hot wire process is used for the bottoming welding process, the filling welding process and the surface covering welding process; the argon arc welding process meets the requirements of full-automatic all-position welding and has a reasonable design; by the process, welding processes can be reduced, welding materials can be saved, cost and labor intensity of workers can be reduced, and welding quality and efficiency can be effectively improved; and the process is particularly suitable for the pre-manufacturing welding of a pipeline which cannot be rotated.

Description

technical field [0001] The invention relates to welding technology, in particular to a narrow gap hot wire argon arc welding process. Background technique [0002] With the development of modern industrial technology and the continuous expansion of production scale, the workload of process pipeline prefabrication has greatly increased. At the same time, the diameter of process pipeline is getting larger and the wall of the pipe is getting thicker. To meet the needs of modern production development, for example, the process pipeline used in the construction of offshore engineering blocks has a maximum pipe diameter of 30in and a pipe wall thickness of 56mm. If ordinary manual argon arc welding is still used, two welders with conventional V-shaped grooves should be used Welding at the same time requires 3 to 4 days of welding, which obviously cannot meet the requirements of the current production situation. [0003] In view of this, the use of highly automated welding equipme...

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): B23K9/16B23K33/00B23K9/235
Inventor 杨炳发曹军徐玉强杨晓飞任凯李江海
Owner CHINA NAT OFFSHORE OIL CORP
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