Castings Ciidda Birta Cawlan

Bacaad tuuristaSoo saarista birta cawl waa isku-xidhnaan aad u qiimo badan sababta oo ah birta cawlku waa ka qaalisan tahay cammuudda tuurista waxay gaadhi kartaa naqshad dabacsan oo dhismo ah.Birta kabka cawl(sidoo kale loo yaqaan birta cawlan) waa koox bir ah oo shub ah oo ay ku jiraan noocyo kala duwan oo darajo ah iyadoo loo eegayo tilmaamo kala duwan oo heerar kala duwan ah. Birta kabka cawlan waa nooc ka mid ah daawaha kaarboon-kaarboonka waxayna magaceeda ka heshay "cawlan" xaqiiqda ah in qaybahooda goyntu ay u muuqdaan cawl. Qaab dhismeedka birta ee kabka cawl wuxuu inta badan ka kooban yahay garaafyada flake, matrix birta iyo eutectic xuduudka hadhuudhka. Inta lagu jiro birta cawl, Kaarboonku waxa uu ku jiraa garaafiga flake. Sida mid ka mid ah biraha shubista ee aadka loo isticmaalo, birta cawlan ee shubka ah waxay leedahay faa'iidooyin badan xagga kharashyada, kasbashada iyo machinabliity. Wax soo saarka si waafaqsan heerarka ASTM A48, A536; DIN 1691, 1693; ISO 185, 1083; EN 1561, 1563; DIN 1691, 1693; AS 1830, 1831; JIS, UNI, NF, BS, UNF, NBN, AS, SS, NS. Darajooyinka walxaha ay ka mid yihiin:

• ISO185: 100, 150, 200, 250, 300
• ASTM A48: NO.20, NO.25, NO.30, NO.35, NO.40, NO.45
• DIN 1691: GG10, GG15, GG20, GG25, GG30
• EN 1561: EN-GJL-100, EN-GJL-150, EN-GJL-200, EN-GJL-250, EN-GJL-300
• BS 1452: 100, 150, 200, 250, 300
• AS 1830: T150, T220, T260, T300