Gilashin ƙarfe na siminti

1. Kayan aikin ƙarfafawa

(1) Brazing na ƙarfe mai ƙera ƙarfe yana amfani da ƙarfe mai ƙera ...

Zafin narkewar ƙarfen jan ƙarfe na azurfa yana da ƙasa. Tsarin da ba shi da lahani ana iya guje masa lokacin da ake yin ƙarfen jan ƙarfe. Haɗin brazing ɗin yana da kyakkyawan aiki, musamman ƙarfen jan ƙarfe wanda ke ɗauke da Ni, kamar b-ag50cuzncdni da b-ag40cuznsnni, wanda ke haɓaka ƙarfin ɗaurewa tsakanin ƙarfen jan ƙarfe da ƙarfen jan ƙarfe. Ya dace musamman don yin ƙarfen jan ƙarfe na nodular, wanda zai iya sa haɗin ya sami ƙarfi iri ɗaya da ƙarfen tushe.

(2) Idan ana amfani da jan ƙarfe da zinc don yin amfani da ƙarfen ƙarfe mai ƙarfi, fb301 da fb302 galibi ana amfani da su, wato borax ko cakuda borax da boric acid. Bugu da ƙari, kwararar da ta ƙunshi h3bo340%, li2co316%, na2co324%, naf7.4% da nac112.6% ta fi kyau.

Lokacin da aka yi amfani da ƙarfe mai kauri da ƙarfe mai cike da jan ƙarfe na azurfa, ana iya zaɓar kwararar ruwa kamar fb101 da fb102, wato cakuda borax, boric acid, potassium fluoride da potassium fluoroborate.

2. Fasahar yin amfani da injin gasawa

Kafin a yi amfani da ƙarfen ƙarfe mai kauri, graphite, oxide, yashi, tabon mai da sauran busassun abubuwa a saman simintin, a hankali a cire su. Ana iya amfani da gogewar sinadarai masu narkewa don cire tabon mai, yayin da ake amfani da hanyoyin injiniya kamar su busar da yashi ko busar da shi, ko hanyoyin lantarki don cire graphite da oxides. Bugu da ƙari, ana iya cire graphite ta hanyar ƙona shi da harshen wuta mai kauri.

Ana iya dumama ƙarfen ƙarfe ta hanyar harshen wuta, tanderu ko induction. Tunda SiO2 yana da sauƙin samuwa a saman ƙarfen ƙarfe, tasirin ƙarfe a cikin yanayin kariya ba shi da kyau. Gabaɗaya, ana amfani da kwararar ƙarfe don yin brazing. Lokacin yin brazing da manyan kayan aiki tare da ƙarfen cika jan ƙarfe na zinc, za a fesa Layer na kwararar ƙarfe a kan saman da aka tsaftace da farko, sannan a saka kayan aikin a cikin tanda don dumama ko a dumama da tocilan walda. Lokacin da aka dumama kayan aikin zuwa kusan 800 ℃, ƙara ƙarin kwararar ƙarfe, a dumama shi zuwa zafin brazing, sannan a goge kayan allura a gefen haɗin don narke solder da cike gibin. Domin inganta ƙarfin haɗin brazing, za a yi maganin annealing a 700 ~ 750 ℃ ​​na tsawon mintuna 20 bayan brazing, sannan a yi sanyaya a hankali.

Bayan an yi wa brazing, ana iya cire yawan kwararar ruwa da sauran abubuwan da suka wuce kima ta hanyar wankewa da ruwan dumi. Idan yana da wahala a cire shi, ana iya tsaftace shi da ruwan sulfuric acid mai kashi 10% ko kuma ruwan phosphoric acid mai kashi 5% ~ 10%, sannan a tsaftace shi da ruwa mai tsafta.