Pipeline welding method suitable for compressor and lubrication oil station matched with compressor for use

A welding method and lubricating oil technology, applied in the field of compressor manufacturing, can solve the problems of processing quality, prolong the manufacturing cycle, increase the production cost, etc., and achieve the effects of improving the welding quality, reducing the shrinkage and reducing the filling.

Inactive Publication Date: 2018-12-18
SHENYANG BLOWER WORKS GROUP PRESSURE VESSEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional manufacturing process of compressor supporting pipelines and auxiliary lubricating oil station pipelines is to ensure full penetration of welded joints and achieve the effect of single-sided welding and double-sided molding. For gap, multi-layer and multi-pass welding welding processes, these processes have disadvantages such as groove processing quality, increased production costs, and extended manufacturing cycles.

Method used

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  • Pipeline welding method suitable for compressor and lubrication oil station matched with compressor for use
  • Pipeline welding method suitable for compressor and lubrication oil station matched with compressor for use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a pipeline welding method suitable for the compressor and its supporting lubricating oil station, including:

[0039] S100. Assembling two pipeline test pieces to be welded with a thickness less than 8 mm, so that a weld with a gap of 0-2 mm is formed between the two test pieces;

[0040] S200, apply a welding activator at the weld between the two test pieces, so that the surface of the weld forms a welding activator layer with a thickness of 35um, and the width of the welding activator layer formed on both sides of the weld is 8mm; Wherein, the welding activator includes the following components in parts by weight: CaF 2 20%, CrC1 3 10%, KF 13%, MgCl 2 38%;

[0041] S300, spot welding is performed at the weld seam where the welding activator layer is formed on the surface, so that the two test pieces are fixedly connected;

[0042] S400. Carry out root welding to the weld fixed by spot welding by means of self-fluxing welding; wherein, t...

Embodiment 2

[0045] Such as figure 1 As shown, a pipeline welding method suitable for the compressor and its supporting lubricating oil station, including:

[0046] S100. Assembling two pipeline test pieces to be welded with a thickness less than 8 mm, so that a weld with a gap of 0-2 mm is formed between the two test pieces;

[0047] S200, apply a welding activator on the weld between the two test pieces, so that the surface of the weld forms a welding activator layer with a thickness of 45um, and the width of the welding activator layer formed on both sides of the weld is 10mm; Wherein, the welding activator includes the following components in parts by weight: CaF 2 22%, CrC1 3 12%, KF 15%, MgCl 2 40%;

[0048] S300, spot welding is performed at the weld seam where the welding activator layer is formed on the surface, so that the two test pieces are fixedly connected;

[0049] S400. Carry out root welding to the weld fixed by spot welding by self-fluxing welding; wherein, the weldi...

Embodiment 3

[0052] Such as figure 1 As shown, a pipeline welding method suitable for the compressor and its supporting lubricating oil station, including:

[0053] S100. Assembling two pipeline test pieces to be welded with a thickness less than 8 mm, so that a weld with a gap of 0-2 mm is formed between the two test pieces;

[0054] S200, apply a welding activator at the weld between the two test pieces, so that the surface of the weld forms a welding activator layer with a thickness of 50um, and the width of the welding activator layer formed on both sides of the weld is 12mm; Wherein, the welding activator includes the following components in parts by weight: CaF 2 24%, CrC1 3 14%, KF 17%, MgCl 2 42%;

[0055] S300, spot welding is performed at the weld seam where the welding activator layer is formed on the surface, so that the two test pieces are fixedly connected;

[0056] S400. Carry out root welding to the weld fixed by spot welding by self-fluxing welding; wherein, the weldi...

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Abstract

The invention discloses a pipeline welding method suitable for a compressor and a lubrication oil station matched with the compressor for use. The method includes the steps that two to-be-welded pipeline test pieces are coupled, and then a small-gap welding seam is formed between the two test pieces; a welding active agent is applied to the welding seam between the two test pieces, and thus a welding active agent layer is formed on the surface of the welding seam; point welding is performed on the position, where the welding active agent layer is formed on the surface, at the welding seam, andthus the two test pieces are fixedly connected with each other; the point-welded and fixed welding seam is subjected to bottoming welding in a self-melting welding mode; and the bottoming-welded welding seam is subjected to cover face layer welding in a filler wire welding mode, and then welding between pipelines is finished. By means of the pipeline welding method, the remarkable advantages thatthe melding depth is increased, and the welding efficiency is improved are achieved, and the application prospects in the field of compressor manufacturing are broad.

Description

technical field [0001] The invention belongs to the technical field of compressor manufacturing, and in particular relates to a pipeline welding method suitable for a compressor and a supporting lubricating oil station. Background technique [0002] In the field of compressor manufacturing in my country, green manufacturing and the promotion of efficient welding methods are the development direction. At the same time, domestic key compressor enterprises such as Shengu, Shaangu and Shanggu are seizing the commanding heights of technology and competing with foreign compressor giants in terms of cost, quality and Efficiency in full competition. [0003] At present, the traditional manufacturing process of compressor supporting pipelines and auxiliary lubricating oil station pipelines is to ensure full penetration of welded joints and achieve the effect of single-sided welding and double-sided molding. For gap, multi-layer and multi-pass welding welding processes, these processe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/02B23K9/028B23K9/32B23K9/235B23K101/06
CPCB23K9/02B23K9/028B23K9/0282B23K9/235B23K9/32
Inventor 王鹏郭忠宣王雨周漪丛培俭张立忠刘秋实曾绮
Owner SHENYANG BLOWER WORKS GROUP PRESSURE VESSEL
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