Yadda ake gane nau'injan karfe gami?
Farar jan ƙarfe, tagulla, jan jan ƙarfe (wanda kuma aka sani da “jajayen jan ƙarfe”), da tagulla (blue-launin toka ko launin toka-rawaya) ana bambanta su da launi.Daga cikin su, farin jan karfe da tagulla suna da sauƙin rarrabewa;jan jan karfe ne tsantsa (najasa <1%) da tagulla (sauran abubuwan da ake hadawa da su sun kai kusan kashi 5%), wanda ke da wuyar ganewa.Lokacin da ba a yi amfani da shi ba, launin jan ƙarfe na jan ƙarfe ya fi na tagulla haske, kuma tagulla yana da ɗan ƙaramin cyan ko launin rawaya;bayan hadawan abu da iskar shaka, jan jan ya zama baki, kuma tagulla turquoise (mai cutarwa da ruwa) ko cakulan.
Rabewa da halayen walda na jan karfe da na jan karfe:
(1) Tagulla mai tsafta: Tagulla mai tsafta ana kiransa jan jan.Yana da kyakyawan kyamar wutar lantarki, yanayin zafi da juriya na lalata.Tagulla mai tsafta ana wakilta da harafin +T}} (tagulla), kamar Tl, T2, T3, da dai sauransu. Abin da ke cikin iskar oxygen yana da ƙasa sosai, kuma jan ƙarfe mai tsafta da bai wuce 0.01% ana kiransa jan ƙarfe mara isashshen oxygen ba, wanda TU ke wakilta (free Copper), kamar TU1, TU2, da sauransu.
(2) Brass: Itacen jan karfe da zinc a matsayin babban abin da ake hadawa da shi ana kiransa tagulla.Brass yana amfani da +H;(rawaya) na nufin H80, H70, H68, da dai sauransu.
(3) Tagulla: A da ana kiran gwangwanin tagulla da kwano, amma yanzu ba tagulla ba ana kiranta da tagulla.Yawanci ana amfani da su sune tagulla na kwano, tagulla na aluminum da min tagulla.Bronze yana wakiltar "Q" (cyan).
Halayen walda na tagulla da tagulla sune: ① mai wuyar haɗawa da sauƙin lalacewa;② mai sauƙi don haifar da fashewar zafi;③ mai sauƙin samar da pores
Welding na jan karfe da tagulla galibi suna ɗaukar waldawar iskar gas, waldawar iskar gas mai karewa, waldawar arc nutse, brazing da sauran hanyoyin.
Copper da na jan karfe suna da kyakkyawan yanayin zafi, don haka gabaɗaya ya kamata a fara zafi kafin waldawa, kuma yakamata a yi amfani da manyan makamashin layi don walda.Welding tungsten na hydrogen yana ɗaukar haɗin haɗin DC mai kyau.A cikin waldawar iskar gas, ana amfani da wuta mai tsaka-tsaki ko harshen wuta mai rauni don jan ƙarfe, kuma ana amfani da harshen wuta mai rauni don tagulla don hana fitar da zinc.
Lokacin aikawa: Juni-23-2022