Huahana hoolei kila kuhili ole

ʻO ke kila hoʻoheheʻe ʻana i ka corrosion, i kapa ʻia hoʻi ke kila kila kila, e pili ana i ke kila hoʻoheheʻe ʻia e hōʻike ana i ke kūpaʻa ikaika i ka ʻino i loko o nā ʻano media corrosive kikoʻī a i ʻole kahi kaiapuni kahi e noho pū ai nā mea ʻino a me nā mea mechanical. 

He 10.5% ka liʻiliʻi o ka chromium i ke kila kila, ʻoi aku ka paʻa ʻana i nā wai wai corrosive a me ka oxidation. ʻO ia ke kūpaʻa ʻana i ka corrosion a me ka ʻaʻahu kūʻokoʻa, hāʻawi i ka machinability maikaʻi loa, a ua kaulana no kona helehelena nani. He "corrosion-resistant" nā mea hoʻoheheʻe waiwai kila kila ke hoʻohana ʻia i nā kaiapuni wai a me nā mahu ma lalo o 1200°F (650°C) a me ka "wela-pale" ke hoʻohana ʻia ma luna o kēia mahana.

Austenitic kila kilae pili ana i ke kila kuhiliʻole me ka hale austenitic ma ka lumi wela. ʻO Austenitic stainless steel kekahi o nā papa ʻelima o ke kila kila ma ke ʻano crystalline (me ka ferritic, martensitic, duplex a me ka ua paʻakikī). I kekahi mau wahi, ua kapa ʻia ka austentite stainless steel i ka 300 series stainless steel. Ke loaʻa i ke kila ma kahi o 18% Cr, 8% -25% Ni, a ma kahi o 0.1% C, he hale austenite paʻa. ʻO Austenitic chromium-nickel stainless steel ka mea kaulana 18Cr-8Ni kila a me ke kila Cr-Ni kiʻekiʻe i hoʻomohala ʻia ma ka hoʻohui ʻana i ka ʻike Cr a me Ni a me ka hoʻohui ʻana iā Mo, Cu, Si, Nb, Ti a me nā mea ʻē aʻe ma kēia kumu. Austenitic kuhiliʻole kila he non-magnetic a he kiʻekiʻe toughness a me ka plasticity, akā, kona ikaika haʻahaʻa, a me ka mea hiki ole ke hooikaika ia ma ka māhele hoʻololi. Hiki ke hooikaika wale ia e ka hana anu. Inā hoʻohui ʻia nā mea e like me S, Ca, Se, Te, loaʻa iā ia nā waiwai maikaʻi o ka machinability.

Hiki nō hoʻi ke hoʻoheheʻe ʻia ke kila kila Austenitic. I mea e hoʻomaikaʻi ai i ka wai o ke kila hoʻoheheʻe a hoʻomaikaʻi i ka hana hoʻoheheʻe ʻana, pono e hoʻoponopono ʻia ka hui ʻana o ke kila kila ma ka hoʻonui ʻana i ka ʻike silika, hoʻonui i ka nui o ka chromium a me ka nickel content, a me ka hoʻonui ʻana i ka palena kiʻekiʻe o ka sulfur element haumia.

Pono ke kila kila Austenitic e hoʻopaʻa ʻia ma mua o ka hoʻohana ʻana, i mea e hoʻonui ai i ka hopena paʻa o nā ʻano precipitates e like me ka carbide i ke kila i loko o ka austenite matrix, ʻoiai hoʻi i ka homogenizing i ke ʻano a me ka hoʻopau ʻana i ke kaumaha, i mea e hōʻoia ai i ke kūpaʻa maikaʻi loa a ʻano mekini. ʻO ka ʻōnaehana hoʻoponopono hoʻonā kūpono ʻo ka hoʻoluʻu wai ma hope o ka hoʻomehana ʻana ma 1050～1150 ℃ (hiki i nā ʻāpana lahilahi ke hoʻoluʻu i ka ea). ʻO ka mahana o ka hoʻonā ʻana e pili ana i ke kiʻekiʻe o ka hoʻohui ʻana o ke kila: ʻoi aku ka haʻahaʻa o ka molybdenum-free a i ʻole ka haʻahaʻa haʻahaʻa haʻahaʻa (≤1100 ℃), a ʻoi aku ka kiʻekiʻe o nā māka alloyed e like me 00Cr20Ni18Mo-6CuN, 00Cr25Ni22Mo2N, etc. 1080～1150) ℃).

ʻO Austenitic 304 ke kila kila kila, ka mea i ʻōlelo ʻia e lawe mai i ka anti-rust a me ka pale ʻana i ka corrosion, a he plasticity maikaʻi loa a me ka paʻakikī, kahi kūpono no ka hoʻopaʻa ʻana a me ka hana ʻana. Me ka mānoanoa o 7.93 g/cm3, 304 stainless steel he kila kila maʻamau, ʻike ʻia ʻo 18/8 stainless steel i ka ʻoihana. Kūleʻa nā huahana metala i nā wela kiʻekiʻe a loaʻa nā waiwai hoʻoponopono maikaʻi, no laila ua hoʻohana nui ʻia lākou i ka ʻoihana a me nā ʻoihana hoʻonaninani hale a me nā ʻoihana meaʻai a me nā lāʻau lapaʻau.

ʻO nā mea hao a me nā mea hao ʻole no ka hoʻolei kālā ʻana, ke kaʻina hana hoʻolei wax nalo:

• • Hao Hina: HT150, HT200, HT250, HT300, HT350; GJL-100, GJL-150, GJL-200, GJL-250, GJL-300, GJL-350; GG10~GG40.
• • Ka hao hao a Nodular paha: GGG40, GGG50, GGG60, GGG70, GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2; QT400-18, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2;
• • ʻO ka hao kalapona: AISI 1020 - AISI 1060, C30, C40, C45.
• • Nā mea hao hao: ZG20SiMn, ZG30SiMn, ZG30CrMo, ZG35CrMo, ZG35SiMn, ZG35CrMnSi, ZG40Mn, ZG40Cr, ZG42Cr, ZG42CrMo ... etc.
• • Ke kila kila: AISI 304, AISI 304L, AISI 316, AISI 316L, 1.4401, 1.4301, 1.4305, 1.4307, 1.4404, 1.4571 a me nā mea kila kila kila.
• • Ke keleawe, ke keleawe ʻulaʻula, ke keleawe a i ʻole nā ​​metala huila keleawe ʻē aʻe: ZCuZn39Pb3, ZCuZn39Pb2, ZCuZn38Mn2Pb2, ZCuZn40Pb2, ZCuZn16Si4
• • Nā mea ʻē aʻe e like me kāu mau koi kūikawā a i ʻole e like me nā kūlana ASTM, SAE, AISI, ACI, DIN, EN, ISO, a me GB.

ʻO nā ʻanuʻu i loko o ke kaʻina hana a i ʻole ka hoʻolei ʻana i ka wax i nalowale:

• • E hana i ka wax pattern a i ole kope paha
• • Sprue i ke kumu wax
• • Hoʻokomo i ke ʻano wax
• • E hoʻopau i ke ʻano o ka wax ma ke puhi ʻana iā ia (i loko o ka umu ahi a i ʻole ka wai wela) e hana ai i ka poni.
• • E ninini ikaika i ka metala i hooheheeia
• • Hooluu a Solidification
• • Wehe i ka sprue mai nā castings
• • E hoʻopau a hoʻopololei i nā hoʻolei kālā i hoʻopau ʻia