Phakathi kweentlobo ezahlukeneyo zentsimbi engagqwaliyo, kusetyenziswa iiklasi ezingama-304, 304L, kunye ne-304H. Nangona zinokubonakala zifana, uhlobo ngalunye luneempawu zalo kunye nokusetyenziswa kwalo.
IbangaIntsimbi engagqwaliyo engama-304yeyona isetyenziswa kakhulu kwaye inokusetyenziswa ngeendlela ezahlukeneyo kwiintsimbi ezingama-300 ezingenasici. Iqulethe i-18-20% ye-chromium kunye ne-8-10.5% ye-nickel, kunye nezixa ezincinci zekhabhoni, i-manganese, kunye ne-silicon. Olu hlobo lunokumelana nokugqwala okuhle kakhulu kwaye luyakwazi ukwakheka kakuhle. Ihlala isetyenziswa kwizicelo ezifana nezixhobo zasekhitshini, ekulungisweni kokutya, kunye nokuhombisa izakhiwo.
Umbhobho wentsimbi engagqwaliyo engama-304Lyimbhobho yentsimbi enekhabhoni ephantsi yebanga lama-304, enomxholo ophezulu wekhabhoni oyi-0.03%. Lo mxholo wekhabhoni ephantsi unceda ukunciphisa imvula yekhabhoni ngexesha lokuwelda, okwenza ukuba ifaneleke ukusetyenziswa kwe-welding. Umxholo wekhabhoni ophantsi unciphisa nomngcipheko wokuziva, oku kukwenziwa kwe-chromium carbides kwimida yeenkozo, okunokukhokelela ekugqwaleni kwe-intergranular. I-304L idla ngokusetyenziswa kwizicelo ze-welding, kunye neendawo apho umngcipheko wokugqwala uyinto exhalabisayo, njengokucubungula iikhemikhali kunye nezixhobo zamayeza.
Intsimbi engagqwaliyo engama-304Hyinguqulelo ephezulu yekhabhoni yebanga lama-304, enomxholo wekhabhoni oqala kwi-0.04-0.10%. Umxholo ophezulu yekhabhoni unika amandla angcono obushushu obuphezulu kunye nokumelana nokuqhekeka. Oku kwenza i-304H ifaneleke kwizicelo zobushushu obuphezulu, ezifana neenqanawa zoxinzelelo, ii-heat exchangers, kunye neebhoyila zoshishino. Nangona kunjalo, umxholo ophezulu yekhabhoni wenza i-304H ibe sesichengeni sokuziva kunye nokugqwala phakathi kweegranular, ngakumbi kwizicelo zokuwelda.
Ngamafutshane, umahluko ophambili phakathi kwezi zigaba ngumxholo wazo wekhabhoni kunye nefuthe ekusetyenzisweni kwe-welding kunye nobushushu obuphezulu. Ibanga 304 lelona lisetyenziswa kakhulu kwaye liyinjongo ngokubanzi, ngelixa i-304L yeyona ikhethwayo kwizicelo ze-welding kunye neendawo apho ukugqwala kuyingxaki. I-304H inomxholo ophezulu wekhabhoni kwaye ifanelekile kwizicelo zobushushu obuphezulu, kodwa ukuthambekela kwayo ekuvezweni nasekugqwaleni okuphakathi kwegranular kufuna ukuqwalaselwa ngononophelo. Xa ukhetha phakathi kwezi zigaba, kubalulekile ukuqwalasela iimfuno ezithile zesicelo, kubandakanya imeko-bume yokusebenza, ubushushu, kunye neemfuno ze-welding.
IQELA LASEBUKHOSINI
Idilesi
Indawo yophuhliso lweshishini laseKangsheng,
Isithili saseWuqing, isixeko saseTianjin, eTshayina.
I-imeyile
Amaxesha okusebenza
UMvulo-NgeCawa: Inkonzo yeeyure ezingama-24
Ixesha lokuthumela: Agasti-08-2024