Mounting and clamping tool and method for argon tungsten-arc welding by use of mounting and clamping tool

A tooling and clamping technology, applied in arc welding equipment, applications, welding equipment, etc., can solve problems such as low straightness, distortion, multiple clamping and repeated shape correction of workpieces, etc., to reduce heat input and ensure shape and position tolerances requirements, less surface oxidation, and the effect of the extent of the heat-affected zone
CN107470845AActive Publication Date: 2017-12-15BEIJING INST OF CONTROL ENG
9 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INST OF CONTROL ENG
Publication Date
2017-12-15

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a mounting and clamping tool and a method for argon tungsten-arc welding by use of the mounting and clamping tool. The method ensures small deformation of pipeline welding and belongs to the technical field of welding processes. A spot welding, circumferential welding and follow-up heat treatment universal integrated tool is designed according to products with different external diameters, mounting, clamping and positioning can be conveniently performed, and meanwhile, surface oxidation of a weld joint, repeated mounting and clamping of the tool, and product deformation are avoided during processing. In the method, 2-4 point equipartition is performed on spot welding parameters through welding programming for symmetric programming; and the circumferential welding process comprises repeated subsection, current from the first section to the last section is in the mode of waveform current, and the average current adopts an inclined mode. Through the programming method, the depth of fusion can be well controlled by the programming method, heat input is reduced to the minimum degree on the premise of guaranteeing the welding depth, the uniformity of the fusion depth is realized, and the ranges of surface oxidation and a heat affected zone are reduced to the utmost extent.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a clamping tool and a method for argon tungsten arc welding by using the tool. The method can reduce the deformation of pipeline welding and belongs to the technical field of welding technology. Background technique

[0002] Pipeline welding generally adopts argon tungsten arc welding method, which has the advantages of convenient welding, high efficiency, and good quality. However, due to the low arc energy density in the welding process of long straight pipes, the welding process requires a large heat input to achieve Its larger welding depth, larger melting width, and larger heat-affected zone lead to larger welding stress, more serious welding deformation, and poor straightness. At present, argon arc welding mainly adopts methods such as using heat-dissipating fixed tooling during the welding process, controlling the assembly gap, or adopting methods such as correcting the shape after welding, such as the anti-deformation m...

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