Izinkinga Nezixazululo Ezihlobene Nenqubo Yokushisela Yamapuleti Aminyene Namancane
1. Yini okufanele yenziwe uma ubukhulu bensimbi yokusebenza yensimbi budlula umkhawulo wokushisela okwamanje ongafinyelelwa umshini wokushisela lapho usebenzisa i-gas metal arc welding (GMAW) kanye ne-flux cored wire gas arc welding (FCAW) ukushisela izinsimbi zokusebenza zensimbi?
Isixazululo ukushisa insimbi ngaphambi kokushisela. Hlangisa indawo yokushisela ye-workpiece usebenzisa i-propane, igesi evamile noma i-acetylene welding torch, enezinga lokushisa elishisayo eliyi-150-260 ℃, bese uqhubeka nokushisela. Inhloso yokushisa insimbi endaweni ye-welding ukuvimbela indawo ye-weld ekupholiseni ngokushesha, ukuze ingabangeli ukuqhekeka noma ukuhlanganisa okungaphelele ekushiseni.
2. Uma kudingekile ukusebenzisa i-electrode gas shielded welding noma i-flux cored wire gas shieded welding ukushisela isembozo sensimbi esincanyana epayipini lensimbi elishubile, uma i-welding current ingakwazi ukulungiswa ngendlela efanele ngesikhathi sokushisela, kungase kuholele ezimweni ezimbili:
Enye iwukunciphisa i-welding current ukuvimbela insimbi encane ukuba ingashi, futhi ngalesi sikhathi, isembozo sensimbi esincanyana asikwazi ukushiselwa epayipini lensimbi eliwugqinsi; Okwesibili, umthamo we-welding owedlulele ungashisa ngamakepisi amancane ensimbi. Kufanele kusingathwe kanjani lokhu?
Kunezixazululo ezimbili ngokuyinhloko:
① Lungisa i-welding current ukuze ugweme ukuvutha ngekhava yensimbi ezacile, shisa kuqala ipayipi lensimbi eliwugqinsi ngethoshi yokushisela, bese usebenzisa ubuchwepheshe bokushisela amapuleti amancane ukushisela izakhiwo ezimbili zensimbi.
② Lungisa i-welding yamanje ukuze ifanele ukushisela amapayipi ensimbi awugqinsi. Lapho ushisela, gcina isikhathi sokuhlala se-arc yokushisela epayipini lensimbi eliwugqinsi ngo-90% futhi unciphise isikhathi sokuhlala kukhava yensimbi encane. Kufanele kuphawulwe ukuthi kuphela uma nekhono kule nqubo kungatholakala amajoyinti amahle we-welding.
- Lapho ushisela ipayipi eliyindilinga elinezindonga ezincane noma elingunxande elinezindonga ezincane epuleti eliwugqinsi, induku yokushisela ijwayele ukusha engxenyeni yepayipi enezindonga ezincane. Ngaphandle kwalezi zixazululo ezimbili ezingenhla, ingabe zikhona ezinye izixazululo?
Yebo, ikakhulukazi ukusebenzisa induku yokukhipha ukushisa ngesikhathi senqubo yokushisela. Uma induku eyisiyingi eqinile ifakwa eshubhuni eliyindilinga elinezindonga ezincane, noma induku eqinile engunxande ifakwe endaweni yokuhlanganisa ipayipi elingunxande, induku eqinile izosusa ukushisa kwendawo yokusebenza enezindonga ezincane futhi ivimbele ukuvutha. Ngokuvamile, izinti eziqinile eziyindilinga noma eziwunxande zifakwe zaqina ezintweni eziningi ezinikezwayo ezingenalutho noma eziwunxande. Lapho ushisela, kufanele kuqashelwe ukugcina i-weld ikude nokuphela kwepayipi, okuyindawo esengozini kakhulu yokushisa. Umdwebo wohlelo lokusebenzisa usinki wokushisa owakhelwe ngaphakathi ukuze ugweme ukuvutha uboniswa kuMfanekiso 1.
- Kufanele kanjani izinto eziqukethe i-galvanized noma i-chromium zishiselwe kwenye ingxenye?
Indlela engcono kakhulu yenqubo ukufaka ifayela noma ukupholisha indawo ezungeze i-weld ngaphambi kokushiselwa, njengoba ama-galvanized noma i-chromium equkethe amapuleti ensimbi angagcini nje ngokungcolisa futhi enze buthaka ukushisela, kodwa futhi akhiphe amagesi anobuthi ngesikhathi sokushisela.