Mayelana nokupholisa kwe amapayipi ensimbi engagqwali okuhlobisa ekukhiqizeni, izidingo zobuchwepheshe ezisetshenziswa lapha ziphakeme kakhulu.Isibonelo, uma ukulawulwa kwezinga lokushisa kungalungile, okuholela ekukhiqizeni ukucindezeleka okushisayo kwe-316 nokucindezeleka kwesakhiwo, ipayipi yensimbi ingase iqhekeke noma ikhubaze.Olandelayo, I-Hangao Tech (i-SEKO Machinery) izokwethula ngokuningiliziwe ulwazi lokukhiqiza amapayipi ensimbi engagqwali okuhlobisa okupholisa:
Ngenxa yokusabalalisa kabusha ukungezwani kwangaphakathi ngesikhathi sokucubungula, ithubhu lensimbi engagqwali elihlobisa lizokhubazeka, futhi ukunemba kokucubungula akukwazi ukuqinisekiswa.Ngaphezu kwalokho, ukuphatha izingxenye ezinkulu kujwayele ukucindezeleka okusalayo.Wonke lawa mashubhu okuhlobisa ensimbi engenasici kufanele amise ukukhululeka kwengcindezi ngemva komshini onzima.Ukususwa kwe-annealing yengcindezi yangaphakathi kuvame ukuhlobisa ishubhu lensimbi engagqwali.Ku-500-550 ° C, ngaphambili yayisetshenziswa ekamelweni lokushisa imizuzu engu-50 kuya kwezingu-100, amahora angu-3 kuya kwangu-5 noma ngaphezulu (kuye ngokuthi inani lezithando ezifakiwe) ukuze kugcinwe ukungezwani kwangaphakathi isikhathi eside.Kubizwa ngokuthi ukuguga kwemvelo, kodwa le ndlela yinde kakhulu futhi ngokuvamile ayisetshenziswa.
Uma ishubhu lokuhlobisa lensimbi engagqwali selipholile, ingaphezulu nezinye izingxenye ezincane ngokuvamile zikhiqiza isakhiwo esimhlophe, esiqinile, esimhlophe esiphukayo.Ngakho-ke, amashubhu okuhlobisa ensimbi engagqwali ajwayelekile kufanele akhishwe noma alinganiswe ukuze kuqedwe amaphutha okukhipha.Izinga lokushisa le-annealing noma elejwayelekile liphakathi kuka-850 no-950°C.Izinga lokushisa ligcinwa amahora angu-1-2, i-cementite ihlanganiswa ku-graphite ne-austenite (isigaba sokuqala se-graphitization).Eyethu isithando somlilo esivuthayo esiqhubekayo esiku-inthanethi singakusiza.Ayikudingi ukushisisa ngaphambili, ingafinyelela izinga lokushisa elifanele lokukhipha isisu phakathi kwamasekhondi angu-10 ngemva kokuqala.
Ngaphezu kwalokho, ixhunywe ohlelweni lwe-PLC, ungabona ngokuqondile idatha yesikhathi sangempela, ukuqapha kwesikhathi sangempela sokucindezela komoya, ukugeleza kwamanzi, izinga lokushisa lokusebenza, isivinini.Phakathi nesikhathi sokupholisa esilandelayo sesithando somlilo, usimende wesibili kanye ne-eutectoid cementite zizohlanganiswa ku-graphite (okungukuthi, isigaba sesibili se-graphitization).Okokugcina, i-perlite yengezwa ku-ferrite noma i-ferrite matrix ukunciphisa ubulukhuni namandla okuphonsa.Ngaphezu kwalokho, inqubo yokuhlanganisa i-850-950 ° C, kodwa i-cementite enqubweni yokumisa, enganciphisa isikhathi sokupholisa sokuqina kwethubhu yensimbi engagqwali yokuhlobisa, ingathola futhi amandla athile nobulukhuni be-matrix ye-pearlite ndawonye. .
