Sarrafa tsatsa tsakanin bakin karfe, bakin karfe 304, tsatsa ta bakin karfe 304 da tsatsa a cikin tsatsar tsakiyar karfe a kusan kashi 10%, zai sa mannewar hatsi ya ragu, a gaban damuwa, yana da sauƙin fashewa, har ma ya karye, kuma ya ɓoye, ba a iya gani daga siffarsa. Hakanan ana haifar da shi ta hanyar sauran manyan abubuwan da ke haifar da tsatsa. Tsatsa tsakanin tsakiyar karfe na bakin karfe austenitic wanda talauci ke haifarwa galibi saboda iyakokin hatsi Cr, Cr da c masu sauƙin samar da sinadarai, da yawan Cr.
1, sinadaran da tsarinsu
(1) Abubuwan da ke cikin C
C na tasirin ƙarfe na tsatsa tsakanin granular na bakin ƙarfe austenitic shine babban abin da ke haifar da shi. A gefe guda, a kula da c sosai kuma a kiyaye yawan carbon a cikin ƙarfe na tushe da sandar walda a 0.08%, a kan ƙarfe na tushe da kayan walda a ƙara abubuwan daidaita Ti, Nb, ƙarfin haɗin gwiwa tare da c, carbon kafin ɗaure Cr, yana samar da mahaɗin da ya dace.
(2) tsarin matakai biyu
Tsarin matakai biyu zai ƙara ƙarfin juriya ga tsatsa tsakanin granular. A gefe guda, an haɗa abubuwan da ke samar da ferrite, kamar chromium, Silicon, aluminum, molybdenum, da kuma tsarin walda na matakai biyu, a kan zaɓaɓɓen wakilin gini wanda ke ɗauke da ƙarin kayan walda na ferrite.
2, fasahar walda
(1) zafin jiki a cikin kewayon zafin jiki na 450 ~ 850°C, musamman a 650°C, shine mafi sauƙin samar da yankin zafin jiki na tsatsa tsakanin granular (wanda kuma aka sani da yanayin zafi mai saurin amsawa ga yanki). Ana iya ɗaukar walda ta bakin ƙarfe, walda a ƙarƙashin laminate, ko kuma kai tsaye a cikin ruwan sanyi na baya na walda, don sanyaya da sauri, rage lokaci a cikin kewayon zafin jiki, matakai ne masu tasiri don inganta juriyar tsatsa na gidajen haɗin gwiwa.
(2) ƙaruwar kuzarin layin walda, zai hanzarta tsatsa na bakin ƙarfe mai austenitic. A lokacin aikin walda, tare da ƙarancin wutar lantarki, saurin walda mai yawa, gajeriyar hanya, hanyar walda mai wucewa da yawa, da kuma rage zafi. Ƙarancin shigar zafi, ta hanyar sanya yanayin zafi cikin sauri don guje wa tsatsa tsakanin sassan da zafi ya shafa.
Lokacin Saƙo: Maris-12-2018