Kuyini i-weld crack?Kuyisici esibi kakhulu esivame kakhulu ekushiseleni.Ngaphansi kwesenzo esihlanganyelwe sokucindezeleka kwe-welding nezinye izici ze-brittleness, amandla okubopha ama-athomu ensimbi endaweni yendawo yejoyinti ehlanganisiwe ayabhujiswa futhi kwakhiwa isikhombimsebenzisi esisha.Ebuchwephesheni be-welding, kufanele sigweme imifantu yokushisela.
Imifantu eshisayo yemifantu yokushisela:
Imifantu eshisayo ikhiqizwa ngaphansi kwezinga lokushisa eliphezulu, kusukela ekushiseni okuqinile kuya ekushiseni okungaphezu kwe-A3, ngakho-ke kubizwa ngokuthi imifantu eshisayo, ebizwa nangokuthi imifantu yokushisa ephezulu.Indlela yokuvimbela imifantu eshisayo?Njengoba isizukulwane semifantu eshisayo sihlobene nezici zokucindezeleka, izindlela zokuvimbela kufanele futhi ziqale ezicini ezimbili zokukhethwa kwezinto ezibonakalayo kanye nenqubo yokushisela.
Imifantu ebandayo yemifantu yokushisela:
Imifantu ebandayo yenziwa ngesikhathi noma ngemva kokushiselwa, ezingeni lokushisa eliphansi, eduze nezinga lokushisa lokuguqulwa kwe-martensite (okungukuthi iphuzu likaNksz) lensimbi, noma ezingeni lokushisa elingaphansi kuka-300 ~ 200 ℃ (noma T ＜ 0.5Tm, Tm izinga lokushisa lendawo yokuncibilika evezwe ngokushisa okuphelele), ngakho-ke abizwa ngokuthi imifantu ebandayo.
Shisisa kabusha imifantu yokushisela:
Ukushisa kabusha imifantu kubhekisela emalungeni ashiselwe ezinye izinsimbi ezine-alloy high-high-powers nezinsimbi ezikwazi ukumelana nokushisa eziqukethe i-vanadium, i-chromium, i-molybdenum, i-boron nezinye izakhi ze-alloy.Ngesikhathi senqubo yokushisisa (efana nokunciphisa ingcindezi, ukushisela okwezingqimba eziningi, kanye nomsebenzi onezinga lokushisa eliphezulu), imifantu eyenzeka endaweni eqinile yokusanhlamvu yendawo ethinteke ekushiseni kanye nokuqhekeka eduze komngcele wokuqala wezinhlamvu ze-austenite kubizwa nangokuthi ingcindezi. i-relief annealing cracks (imifantu ye-SR).
Kunezizathu eziningi zokuqhekeka kwe-welding, kodwa kungakhathaliseki ukuthi yisiphi isizathu, inqobo nje uma izindlela zokuvimbela zihlakaniphile, izingozi zokuqhekeka ngesikhathi sokushisela zingancishiswa kakhulu.
Isikhathi sokuthumela: Sep-20-2022