Ake siqale ngeqiniso:
Amapayipi ensimbi engagqwali ye-Austenitic avame ukusetshenziswa ezindaweni ezihlukahlukene ezigqwalayo. Kodwa-ke, uma uqaphele, uzothola ukuthi kumadokhumenti okuklama amanye amayunithi, inqobo nje uma i-DN≤40, zonke izinhlobo zezinto zokwakha zamukelwa ngokuyisisekelo. Emibhalweni yokuklama yamanye amayunithi, amapayipi ensimbi engagqwali, kungakhathaliseki ukuthi i-caliber incane kangakanani, asebenzisa nokufakwa kwamapayipi ane-butt-welded esikhundleni sokufakwa kwamashubhu.
Njengoba isisho sisho: ukuze kuqinisekiswe ikhwalithi yokushisela yamapayipi amancane futhi ugweme ukungena kwe-welding ngesikhathi sokushisela okukhulu kwamanje, uxhumano lwesokhethi luvame ukusetshenziswa esikhundleni sokuxhuma kwe-butt welding. Ngakho-ke, kungani amanye amayunithi amapayipi amancane ensimbi engenasici engenazo izingcezu zokungena? Lokhu kuhilela inkinga: ukugqwala kwemifantu.
Ake sikhulume ngokuthi kuyini ukugqwala kwe-crevice?
Uma kunegebe (ngokuvamile i-0.025-0.1mm) ebusweni bezingxenye zensimbi ngenxa yemizimba yangaphandle noma izizathu zesakhiwo, kuba nzima ukuthutha i-corrosion medium egebeni, okuholela ekugqwaleni kwensimbi, okubizwa ngokuthi i-gap corrosion. Ukugqwala kweCrevice kuvame ukuba yimbangela yokunye ukugqwala (njengokugqwala kwemigodi, ukugqwala kwengcindezi), ngakho iphrojekthi ilwela ukugwema ukwenzeka kokugqwala kwemifantu. Ukuba khona kwemifantu kufanele kugwenywe ekwakhiweni kwesakhiwo sepayipi lendawo ejwayele ukugqwala.
Insimbi engagqwali 304 flange
Kungenxa yokuthi kukhona igebe ekuxhumekeni kwesokhethi, ngakho-ke amanye amayunithi ukuze agweme ukugqwala kwegebe, ukuze kube khona ukugqwala kwamapayipi ensimbi engagqwali, ipayipi elincane le-caliber livame ukusebenzisa uxhumano lwe-butt welding, ukulawula inqubo ye-welding ukuqinisekisa ikhwalithi, gwema. ukusetshenziswa kwe-intubation.
I-304 iyinsimbi engagqwali yendawo yonke, isetshenziswa kabanzi ekukhiqizeni amathuluzi nezingxenye ezidinga ukusebenza okuhle okuphelele (ukumelana nokugqwala nokubumbeka).
I-304 insimbi engagqwali iwuphawu lwensimbi engagqwali ekhiqizwa ngokuhambisana nezindinganiso ze-ASTM e-United States. I-304 ilingana ne-China 0Cr19Ni9 (0Cr18Ni9) yensimbi engagqwali. I-304 iqukethe u-19% we-chromium kanye ne-nickel engu-9%.
I-304 iyinsimbi engagqwali esetshenziswa kabanzi, ekwazi ukumelana nokushisa. Isetshenziswa emishinini yokukhiqiza ukudla, amakhemikhali e-xitong, amandla enuzi, njll.
304 insimbi engagqwali butt welding flangeiyi-chromium esetshenziswa kabanzi - i-nickel insimbi engagqwali, enokumelana nokugqwala okuhle, ukumelana nokushisa, amandla okushisa aphansi kanye nezakhiwo zemishini. Ukumelana nokugqwala emkhathini, uma kuyindawo yezimboni noma indawo engcoliswe kakhulu, kudinga ukuhlanzwa kusenesikhathi ukugwema ukugqwala. Ifanele ukucubungula ukudla, ukugcinwa kanye nokuthutha. Ine-machinability enhle kanye ne-weldability. I-Plate heat exchanger, i-bellows, impahla yasendlini, izinto zokwakha, amakhemikhali, imboni yokudla, njll.