Non-consumable electrode inert gas shielded-arc welding technology
An inert gas, welding process technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of easy existence of pores and slag inclusions on the surface of weldments, inability to meet production and processing requirements, and high quality failure rate. Good post-weld cleaning, improved quality, easy operation
Inactive Publication Date: 2016-08-10
SUZHOU YUEJIA VALVE CO LTD
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Problems solved by technology
[0003] However, in practice, it is found that when some non-melting extremely inert gases are used for welding, it is found that it is only a simple pre-weld treatment, so that pores and slag inclusions are likely to exist on the surface of the weldment, and the post-weld treatment is only a simple treatment. , so that the residual solvent and welding slag after welding will be destructive to the weldment, resulting in a high rate of unqualified welded quality, and the groove during welding is X-shaped, which cannot meet the actual production and processing needs
Method used
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Embodiment Construction
[0010] The present invention will be further described in detail below in conjunction with specific embodiments.
[0011] The welding process of the non-melting polar inert gas shielded welding according to the present invention includes the following steps: firstly cleaning the to-be-welded parts before welding, then preheating the to-be-welded parts, and then welding the to-be-welded parts, The groove is V-shaped, the angle of the groove surface is 30°~40°, and the thickness of the groove is 3-25mm. Finally, post-welding cleaning is performed; the pre-welding cleaning includes: degreasing→alkali washing→water washing→neutralization Photosynthesis→rinsing with water→low temperature drying; the post-weld cleaning includes: 1) carefully scrub the welded joints with a stiff brush in hot water; Immerse in 3% chrome crisp water solution or potassium dichromate solution for about 5-10min, and wash carefully with a stiff brush; 3) Wash the weldment in hot water; 4) Dry the weldment ...
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Abstract
The invention relates to a non-melting extremely inert gas shielded welding welding process, which comprises the following steps: firstly cleaning the parts to be welded before welding, then preheating the parts to be welded, and then welding the parts to be welded, and the groove of the welded parts is made of V type, the angle of the groove surface is 30°~40°, the thickness of the groove is 3‑25mm, and finally the post-weld cleaning is carried out; the pre-weld cleaning includes: degreasing→alkali cleaning→clean water rinse→neutralization of photosynthesis→clear water Rinsing→low temperature drying, the non-melting extremely inert gas shielded welding welding process of the present invention is easy to operate and can perform good pre-weld cleaning and post-weld cleaning on the weldment. Improve the welding quality and meet the actual processing needs.
Description
technical field [0001] The invention relates to a welding process, in particular to a non-melting polar inert gas shielded welding process. Background technique [0002] Gas-shielded arc welding is arc welding that uses gas as an arc medium and protects the arc and the welding zone. It is called gas-shielded arc welding; there are two basic types of arcs: melting electrode arc and non-melting electrode arc. The non-melting electrode does not melt during the welding process. , the electrode is not filled with metal through the arc to the molten pool transition. Non-melting electrode arc welding has several methods such as tungsten inert gas shielded welding, plasma arc welding and carbon arc welding. [0003] However, in practice, it is found that when some non-melting extremely inert gases are used for welding, it is found that it is only a simple pre-weld treatment, so that there are easily pores and slag inclusions on the surface of the weldment, and the post-weld treatme...
Claims
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Login to View More IPC IPC(8): B23K9/167B23K9/235B23K33/00
CPCB23K9/167B23K9/235B23K33/00
Inventor 严跃伟
Owner SUZHOU YUEJIA VALVE CO LTD