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Hardfacing process
- Categories:lron-based alloys
- Time of issue:2020-06-30 00:00:00
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HardfacingProcess Introduction
At present,submerged arc welding or open arc surfacing is the widely-used welding technology in China.We hope to get uniform fine distribution of carbide phase in the surfacing alloy.Sothere was generated a lot of fine-grained transeverse crack in the surfacing arc track channel(usually thereis acrack interval of 10-15mm).We can heard the intermttent sound of cracking "bang, bang"when surfacing, which is required to release the welding stress. Not enough stress release,easily lead alloy surfacing layer peeling. Surfacing electrical parameters match the selection and turntable speed, hoping good the surfacing weld bead molding, bead widthis about 15mm.If weling trail crack interval is too wide or too large cracks may eventually affect the wear resistance of the surfacing aloy, and may even lead to severe flaking.
For both submerged arc welding and open arc welding process, both have their own charactersics.Submerged arc welded environmentis cleaner, the arcchanne forming beautiful.Open arcwelding withoutheuse of flx, so sufacing applcatons more lexible.Athe same tme, the open arc welding more effciency,the penetraion shallow. For flexble surfacing pieces, such as thn-walled,wear liners,better appicablit. Just because welding to produce a o of smoke,the splash and exposed arc. The welding places eed to do a god job of environmental protection and the protective measures of welder.
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