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All-position open-arc surfacing method for inner wall of large-diameter bend

An all-position, large-diameter technology, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of uneven welding bead lap, unsatisfactory use effect, poor impact resistance, etc., to improve welding quality, The effect of facilitating passage and easy operation

Inactive Publication Date: 2018-07-03
艾锑威(上海)材料科技有限公司
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Problems solved by technology

[0002] At present, the large-diameter wear-resistant elbows on the market mainly adopt wear-resistant processes such as longitudinal seam surfacing welding and ceramic patch. General and other shortcomings, the weld bead is not smooth during the surfacing process, and it is easy to produce false welding, false welding, and other quality problems. Ceramic patch has the advantages of high wear resistance and corrosion resistance, but its impact resistance is poor, and it is harsh in the field. Unsatisfactory use under conditions

Method used

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  • All-position open-arc surfacing method for inner wall of large-diameter bend

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Such as figure 1 As shown, a method for all-position open-arc surfacing welding on the inner wall of a large-diameter elbow, the method for all-position open-arc overlay welding on the inner wall of a large-diameter elbow includes the following steps:

[0028] Step S1: selecting the base material of the workpiece;

[0029] In practical applications, the base material is generally composed of Q235A, Q235B, Q345, cast steel and other materials. At the sa...

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Abstract

The invention discloses an all-position open-arc surfacing method for the inner wall of a large-diameter bend. The method has the advantages that a workpiece is cleaned so as to meet the surfacing requirement; the central point position of the workpiece is determined and marked according to the angle, the bending radius and the specification of the workpiece; the workpiece is moved and clamped according to the central point position of the workpiece; surfacing and monitoring are carried out on the clamped workpiece; and after surfacing is completed, the workpiece is moved to a designated position and is inspected and repaired. The method has the advantages that according to a bend adopting annular open-arc surfacing, the combination degree is higher, the surface of a surfacing layer is smoother, fluid can conveniently pass through the bend, the friction between a wear-resistant layer and the fluid is reduced, and the using efficiency is improved; and the operation is simple and convenient, the safety coefficient is higher, manual semi-automatic operation is not needed, the uncertainty caused by manual work is reduced, the production efficiency is improved, all the motion shaft speed can be subjected to stepless adjustment the welding quality is improved, the welding combination degree is high, and a weld joint is attractive.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to an all-position open-arc surfacing method for the inner wall of a large-diameter elbow. Background technique [0002] At present, the large-diameter wear-resistant elbows on the market mainly adopt wear-resistant processes such as longitudinal seam surfacing welding and ceramic patch. General and other shortcomings, the weld bead is not smooth during the surfacing process, and it is easy to produce false welding, false welding, and other quality problems. Ceramic patch has the advantages of high wear resistance and corrosion resistance, but its impact resistance is poor, and it is harsh in the field. The effect is not ideal under the conditions. Contents of the invention [0003] In view of the above-mentioned shortcomings existing at present, the present invention provides an all-position open-arc surfacing welding method for the inner wall of a large-diameter elbow, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04
CPCB23K9/044
Inventor 樊广志樊广叶
Owner 艾锑威(上海)材料科技有限公司
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