Magnesium thermal welding flux and welding process
A welding process, magnesium heating technology, applied in the direction of welding medium, welding equipment, auxiliary welding equipment, etc., can solve the problems of low efficiency and slow welding speed
Active Publication Date: 2015-01-28
浙江爱纽阀门配件有限公司
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Problems solved by technology
Although manual welding is suitable for a wide range of welding, before manual welding, the welding rod needs to be baked in an oven, and the welding rod should be kept warm and dry. The welding speed is slow and the efficiency is low.
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[0033] The welding process of the present invention is:
[0034] 1. Grind and pickle the surface of the part to be welded, and there must be no grease in the part to be welded;
[0035] 2. Welding construction site environment: temperature: 10~50℃, humidity: ≤70%;
[0036] 3. Materials that are prone to cracks need to be preheated before welding and then kept warm and cooled after welding;
[0037] Method: Use crawler tracks and thermal insulation cotton to keep them warm, evenly arrange the crawlers on the welding part and completely wrap them with thermal insulation cotton (two layers); when thermal insulation, the welding seam should be filled with thermal insulation cotton; as much as possible to ensure slow and uniform cooling. The heating track should be checked by an electrician at any time to prevent short circuit! In case of power outage or low temperature, the maximum temperature is lower than 240℃, the insulation cotton should be filled for heat preservation, but the weldi...
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The invention relates to a magnesium thermal welding flux and a welding process, belongs to the technical field of welding and mainly solves the problems of low manual welding speed and rigorous automatic welding requirements for welding seams. The magnesium thermal welding flux is mainly characterized in that the magnesium thermal welding flux comprises the following components in percentage by weight: 66-74 percent of metal welding powder with the same chemical component as parent metal to be welded, 10.5-13.5 percent of potassium permanganate powder, 7-9 percent of magnesium powder and 9-11 percent of slag forming agent, wherein the slag forming agent contains 23 to 27 percent of limestone, 7 to 9 percent of bauxite, 19 to 21 percent of dolomite, 23 to 27 percent of lime, 9 to 11 percent of diatomite and 11 to 13 percent of thermoplastic phenolic resin. The magnesium thermal welding flux and the welding process have the benefits that welding is similar to a welding technology of an aluminum heat welding mechanism, only the preliminary ignition is required, heat and oxygen can be provided by medicament self-pyrolysis at the later stage, and the welding process has the characteristics of good manual welding adaptability and high automatic welding speed and is mainly used for large area or complicated shape of surfacing welding and butt welding conditions.
Description
Technical field [0001] The invention belongs to the technical field of welding, and specifically relates to a magnesium hot welding flux and a welding process using the flux. Background technique [0002] Modern industrial welding often encounters large area or complicated shape surfacing and butt welding conditions. At present, manual welding and automatic welding are usually used for welding. Although manual welding is suitable for a wide range of welding, it is necessary to bake the electrode in an oven before manual welding, and keep the electrode warm and dry. The welding speed is slow and the efficiency is low. Automatic welding takes submerged arc automatic welding as an example. Before welding, it is necessary to adjust the current size, travel speed, and flux supply speed according to the welding seam conditions; automatic welding has very strict requirements on the welding seam. Summary of the invention [0003] The present invention aims to provide a magnesium thermal ...
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IPC IPC(8): B23K35/362B23K37/00
CPCB23K35/362B23K37/00
Inventor 李晓波张坤家
Owner 浙江爱纽阀门配件有限公司