Taurin saman Rockwell na karafan carbon da aka toshe gabaɗaya shine 55+-3, kuma taurin karfen da ba a taɓa yi ba mai sanyin birgima yana sama da 80. Cold-birgima da takarda gabaɗaya suna da kauri na 0.1-3mm da faɗin 100-2000 mm; duka biyun an yi su ne da tsiri mai zafi ko farantin karfe. .
CRS ita ce gajarta ta Ingilishi mai sanyin ƙarfe, wato ƙarfe mai sanyi. Yana nufin tsarin birgima na karfe. Misali, q235 talakawan carbon karfe farantin karfe na iya zama sanyi birgima, kuma karfe 10 # na iya zama sanyi. Taurinsa na iya kasancewa akan ma'auni mai dacewa bisa ga ma'aunin ƙarfe da aka yi amfani da shi. .
Menene darajar takardar da aka yi birgima mai sanyi fiye da spcc? .
Cold-birgima takardar shine taƙaitaccen takardan tsarin ƙarfe na yau da kullun na carbon, wanda kuma aka sani da takardar sanyi mai birgima, wanda aka fi sani da takarda mai birgima, wani lokacin kuma a yi kuskuren rubuta shi azaman takarda mai birgima. Farantin sanyi an yi shi da ƙarfe na yau da kullun na carbon structural karfe tsiri mai jujjuyawar ƙarfe, wanda aka ƙara sanyi-birgima zuwa ƙarfe mai kauri wanda bai wuce 4mm ba. .
An raba takardar da aka yi sanyi zuwa: 1/8 mai wuya, 1/4 mai wuya, 1/2 mai wuya da cikakken yanayi mai wuya. Gabaɗaya akwai manyan raka'a biyu na ƙimar taurin: HRB (Rockwell) HV (Vickers) kamar haka: Alamar rarrabe inganci HRB (Rockwell) HV (Vickers) 1/8 wuya. .
Pickling farantin ne mai zafi-birgima farantin da aka hõre wani tsari irin su dephosphorization (cire tsatsa, saura, da dai sauransu, samar a lokacin zafi-mirgina) da sauran hanyoyin da za a pickling surface don samun karfe farantin da mafi kyau yi fiye da zafi. - birgima surface. Ana iya gani daga tsarin masana'anta cewa taurinsa yana da zafi birgima tare da daraja iri ɗaya. .
Ainihin babu bambanci a taurin saman sama tsakanin sanyi-birgima da galvanized. Domin saman galvanized kawai an lulluɓe shi da Layer na zinc daga ƴan microns zuwa kusan 20 microns akan madaidaicin. Abubuwan da ake amfani da su gabaɗaya sanyi-birgima da zafi-birgima. Taurin ya dogara da darajar kayan, kuma maki ya bambanta. .
Dauki DC01, DC03 a matsayin misali. DC01 babba iyaka na yawan amfanin ƙasa 280 DC03 babba iyakar ƙarfin yawan amfanin ƙasa 240, dc06+ze, sun dace da takardar da aka yi birgima mai sanyi, lambar tana wakiltar ƙimar hatimi, kuma mafi girman lambar shine.
Ana yin takardar da aka yi birgima mai zafi da murɗa mai zafi azaman ɗanyen abu, ana birgima a zafin daki da ke ƙasa da zazzabi na recrystallization, kuma taurinsa kusan 150HV ne. The shearing inji ruwan wukake yawanci yi da kayan aiki karfe, tare da taurin HRC55 ~ 58 °, wanda zai iya yanke mafi yawansu.
