La dhajiyay 2019-03-11Qalabka Dacromet wuxuu door muhiim ah ka ciyaara warshadaha casriga ah.Dahaarka Dacromet sidoo kale aad ayey ugu badan yihiin wax soo saarka, laakiin dahaarka Dacromet laguma kaydin karo heerkul sare.Waa maxay sababtu?
Sababta ayaa ah in ay jiraan faa'iidooyin taxane ah oo ku jira tikniyoolajiyadda Dacromet oo dheesha dhaqameedku aanay ku habboonayn karin, taas oo si dhakhso ah loogu riixo suuqa caalamiga ah.Ka dib in ka badan 20 sano oo horumarinta joogtada ah iyo hagaajinta, tignoolajiyada Dacromet ayaa hadda samaysay nidaam daaweyn oo dhammaystiran oo dusha sare ah, kaas oo si weyn loogu isticmaalo daaweynta ka hortagga daxalka ee qaybaha birta.Shirkaddani waxay aasaastay Nippon.Darro.shamrock (NDS) sannadkii 1973kii iyadoo la kaashanaysa Japan Oil & Fats Co., Ltd., waxayna sidoo kale DACKAL ka aasaastay Yurub iyo Faransiiska 1976. Waxay u qaybiyeen suuqa adduunka afar suuq oo waaweyn: Aasiya Pacific, Yurub, Afrika iyo Ameerika.Masuul ka ah hal gobol oo danaha guud ka raadiya heer caalami ah.
Sababtoo ah heerkulka sare, waxay u badan tahay in gabowga dareeraha daahan yahay, heerkulka kaydinta dareeraha daahan Dacromet ayaa la doorbidaa in la xakameeyo ka hooseeya 10 °C.Isla mar ahaantaana, qorraxda hoosteeda, dareeraha dahaarka ayaa si sahlan loo sameeyaa polymerize, metamorphose, iyo xitaa la xoqay, markaa waxa ugu wanaagsan in lagu hayo meel qabow.Muddada kaydinta dareeraha daahan Dacromet ma aha mid aad u dheer, sababtoo ah muddada dheer ee dareeraha daahan ee la kaydiyay, ayaa sarreeya qiimaha pH, taas oo keeni doonta dareeraha daahan in uu gabowdo oo la tuuro.Tijaabooyinka qaarkood waxay muujiyeen in qashinka ka dib diyaarinta Dacromet-free chromium, dareeruhu waa ansax 30 maalmood at 20 ° C, 12 maalmood at 30 ° C, iyo 5 maalmood oo kaliya at 40 ° C.
Sidaa darteed, dareeraha dahaarka Dacromet waa inuu ku jiraa xaaladaha heerkulka hooseeya, ama heerkulka sare wuxuu sababi doonaa dareeraha dahaarka inuu gabowdo.
Waqtiga boostada: Jan-13-2022