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TIG welding wire manufacturing method capable of improving surface cleanliness

A technology for surface cleaning and manufacturing methods, applied in cleaning methods and tools, cleaning methods using liquids, manufacturing tools, etc., can solve problems such as weld slag inclusions, pores, unclean welding wire surface, nickel-based alloy defects, etc., to achieve Ease of quality, good consistency of welding wire quality, and uniform cleanliness

Active Publication Date: 2021-12-14
HARBIN WELL WELDING CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Stainless steel welding wire is widely used. The most critical control points in the production process are: the composition of the base metal and the cleanliness of the finished product surface. The composition of the material has been selected and cannot be adjusted. At this time, the surface quality of the welding wire is particularly important to the quality of the weld. If the surface of the welding wire is not clean, it is easy to cause conventional defects such as weld slag inclusions and pores, and the requirements for weld quality are higher. Nickel-based alloys are also prone to internal microscopic defects, which directly affect welding quality
[0003]At present, semi-finished wires after bright annealing are generally used for TIG welding wires to be directly oil-pulled and polished in a single pass. Residues such as oxidation will remain on the surface of the welding wire after polishing, making the surface of the welding wire unclean, especially for areas with high quality requirements such as nuclear power TIG welding wire must use a separate polishing process after wire drawing

Method used

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  • TIG welding wire manufacturing method capable of improving surface cleanliness
  • TIG welding wire manufacturing method capable of improving surface cleanliness
  • TIG welding wire manufacturing method capable of improving surface cleanliness

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Processing and manufacturing ER308L stainless steel straight TIGφ2.4mm welding wire, the specific steps are as follows:

[0034] (1) Incoming material, cold-drawn hard state, incoming material specification φ2.5mm;

[0035] (2) Bright annealing, the incoming material is annealed on-line through the protective atmosphere of ammonia decomposition gas, the annealing temperature is 1050°C, and the annealing line speed is 10m / min;

[0036] (3) Electrolytic cleaning, after annealing, the wire is electrolytically cleaned, the medium used for electrolytic cleaning is 10% dilute sulfuric acid, and the electrolytic cleaning speed is 80 m / min; after electrolysis, it is rinsed with online water and dried with a wind brush;

[0037] (4) Ultrasonic cleaning, the silk after electrolytic cleaning is ultrasonically cleaned, the medium used is tap water, the ultrasonic frequency is 60KHZ, and the ultrasonic time is 5s;

[0038] (5) Eye mold polishing: Pass the cleaned semi-finished wire...

Embodiment 2

[0041] Processing and manufacturing ERNiCr-3 nickel-based alloy coiled TIGφ2.0mm welding wire, the specific steps are as follows:

[0042] (1) Incoming material, cold-drawn hard state, incoming material specification φ2.1mm;

[0043] (2) Bright annealing, the incoming material is subjected to online solution annealing in the protective atmosphere of ammonia decomposition gas, the annealing temperature is 1080°C, and the annealing line speed is 10m / min;

[0044] (3) Electrolytic cleaning, after annealing, the wire is electrolytically cleaned, the medium used for electrolytic cleaning is 10% dilute sulfuric acid, and the electrolytic cleaning speed is 80 m / min; after electrolysis, it is rinsed with online water and dried with a wind brush;

[0045] (4) Ultrasonic cleaning, the silk after electrolytic cleaning is ultrasonically cleaned, the medium used is tap water, the ultrasonic frequency is 60KHZ, and the ultrasonic time is 5s;

[0046] (5) Eye mold polishing: pass the cleane...

Embodiment 3

[0053] For ER308L stainless steel straight strips with incoming specifications of φ2.5mm, the annealing temperature is 1050°C and the relationship between the annealing wire and the welding wire strength is studied. The results are as follows Figure 5 shown by Figure 5 It can be seen that when the annealing speed is 10-12m / min, the strength of the welding wire after annealing is 900MPa-1000MPa

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Abstract

The invention discloses a TIG welding wire manufacturing method capable of improving surface cleanliness, and belongs to the technical field of welding material preparation. According to the method, a hard semi-finished welding wire is subjected to bright annealing, electrolytic cleaning, ultrasonic cleaning and eye mold polishing according to the manufacturing technological process, and finally, the finished TIG welding wire is obtained through straightening, cutting or coiling according to purposes. According to the method, the continuous annealing speed and the wire drawing area reduction rate are controlled, an oxidation film is removed through supplied material electrolysis, and residues are removed through ultrasonic cleaning, so that the problem of surface cleaning of the welding wire is effectively solved. Sufficient solid solution is not needed in the annealing step, so that the annealing speed is higher than the normal speed by 30% or above, and the method has the advantages of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a TIG welding wire manufacturing method for improving surface cleanliness, and belongs to the technical field of welding material preparation. Background technique [0002] Stainless steel welding wire is widely used. The most critical control points in the production process are: the composition of the base metal and the cleanliness of the finished product surface. In the cold drawing process, the composition of the base material has been selected and cannot be adjusted. At this time, the surface quality of the welding wire It is particularly important to the quality of the weld. If the surface of the welding wire is not clean, it is easy to cause conventional defects such as weld slag inclusions and pores. Nickel-based alloys that require higher weld quality are also prone to internal microscopic defects, which directly affect welding. quality. [0003] At present, the semi-finished wire after bright annealing is generally u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/40B08B3/12
CPCB23K35/40B08B3/12
Inventor 陈波徐锴邹小平周宝金刘鸣宇王国佛霍树斌侴树国朱旭张明辉贾玉力徐亦楠刘侨郝增龙李丹晖杨再勋马健朝
Owner HARBIN WELL WELDING CO LTD
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