ʻO WCB, kahi pōkole o Weldable Cast B-Grade Carbon Steel, he kila hoʻolei ʻia me ke kalapona ʻo ia ka mea hoʻohui nui. ʻO ke kila kila he huaʻōlelo maʻamau no nā mea hoʻoheheʻe hao i hoʻohana ʻia no ka hana ʻana i nā hoʻoheheʻe ʻaʻole e hoʻololi i ka eutectic i ka wā o ke kaʻina paʻa. ʻO WCB kahi helu mea maʻamau no nā valve a me kā lākou mau pono.
Ua uhi ʻia ʻo WCB carbon steel (UNS Code J03002) e ka maʻamau ASTM A216/A216M (ASTM A216/A216M Steel Castings, Carbon, Pono no ka Fusion Welding, no ka High-Temperature Service), kahi kikoʻī e uhi ana i nā pahu kila kalapona no nā valves, nā mea pono, flanges a me nā ʻāpana paʻi ʻē aʻe no ka lawelawe wela kiʻekiʻe a me ka maikaʻi e pono ai no ka hui pū ʻana me nā mea hoʻolei ʻē aʻe a i ʻole nā ʻāpana kila i hana ʻia e wili hui. ʻO ka helu like o WCB ma Kina ka ZG280-520.
Aia ʻekolu mau māka o ke kila kalapona i uhi ʻia i ka kikoʻī o ASTM A216/A216M, WCA (UNS J02502), WCB a me WCC (UNS J02503). E hilinaʻi ke koho i ka hoʻolālā a me nā kūlana lawelawe, nā waiwai mechanical, a me nā ʻano wela kiʻekiʻe.
E hoʻolako ʻia nā hoʻolei ʻana o WCB i ka annealed, a i ʻole maʻamau, a i ʻole maʻamau a hoʻonaninani ʻia e like me ka hoʻohana hope ʻana. Loaʻa i ka WCB kahi weldability maikaʻi, no laila e nānā ʻia nā hoʻoponopono weld i nā kūlana maikaʻi like i hoʻohana ʻia e nānā i nā hoʻolei WCB.
ʻO ke kila kalapona he mea hoʻoheheʻe hao me ke kalapona ma ke ʻano he mea hoʻohui nui a me kahi mea liʻiliʻi o nā mea ʻē aʻe. E hoolei i na kila kalapona haahaa me ke kalapona ma lalo o 0.2%, e hoolei i na mea kalapona kalapona me 0.2% a 0.5%, a e hoolei i na kila kalapona kiʻekiʻe me ka nui o ka 0.5%. Ke piʻi aʻe ka ʻike kalapona, piʻi ka ikaika a me ka paʻakikī o ke kila kalapona hoʻolei. He kiʻekiʻe ka ikaika, ka plasticity a me ka paʻakikī, a me ke kumu kūʻai haʻahaʻa. Hoʻohana ʻia ia i nā mīkini koʻikoʻi e hana i nā ʻāpana e amo ana i nā ukana kaumaha, e like me ke kū ʻana o ka wili wili, nā kahua paʻi hydraulic, a me nā mea ʻē aʻe. , huila a me na huila.
