Hoʻolei kālā o ka ua hoʻopaʻa ʻana i ke kila kila

ʻO ke kumu nui o ka mālama ʻana i ka hoʻonā paʻa o nā hoʻoheheʻe kila kila ʻo ia ka hoʻoheheʻe ʻana i nā carbide a i ʻole nā ​​​​mea hoʻoheheʻe ʻē aʻe i ka hopena paʻa e loaʻa ai kahi ʻano supersaturated hoʻokahi-phase. ʻO ka hoʻoheheʻe ʻia ʻana o ke kila kuhiliʻole austenitic, ke kila manganese austenitic a me ke kila ʻilikai paʻakikī paʻakikī e pono ke mālama ʻia i ka hopena paʻa.

ʻO ke kila kuhili ka maʻamau ʻo Martensitic precipitation hardening stainless steel i loaʻa ke kalapona ma lalo o 0.1%. E hoʻoikaika i ka hoʻohui ʻana i nā mea paʻakikī (keleawe, aluminika, titanium a me aluminika, a me nā mea ʻē aʻe) e hoʻoponopono ai i ka nele o ka ikaika. ʻOi aku ka kiʻekiʻe o ka chromium ma mua o 17%, a ua hoʻohui ʻia ka nui o ka nickel e hoʻomaikaʻi i ke kūpaʻa corrosion.

ʻO ka Maraging precipitation hardening stainless steel he ʻano kila kila me ka ʻike kalapona ʻaʻole i ʻoi aku ka kiʻekiʻe ma mua o 0.03% e hōʻoia i ka paʻakikī, ka pale ʻana i ka corrosion, weldability a me ka hana o ka martensite matrix, a me 12% chromium e hōʻoia i ka pale ʻana i ka corrosion. Eia kekahi, hoʻohui ʻia ka cobalt element alloy e hoʻomaikaʻi hou i ka hopena wela o ke kila.

Semi-austenitic precipitation hardening stainless steel, ʻo ia hoʻi, hoʻololi i ka ua hoʻopaʻakikī kila kila, ʻaʻole i emi iho ma lalo o 12% chromium. Loaʻa iā ia ka haʻahaʻa kalapona, a me ka alumini e like me kāna kumu paʻakikī paʻakikī. ʻOi aku ka maikaʻi o ka hana holoʻokoʻa ma mua o ka martensitic precipitation hardening stainless steel.

ʻO ke kila kuhili ʻole ʻo Austenitic precipitation hardening stainless steel me ka hoʻolālā austenite paʻa i nā mokuʻāina i kinai ʻia a ʻelemakule. He kiʻekiʻe kona ʻike nickel a me ka manganese, a ʻoi aku ka kiʻekiʻe o ka chromium ma mua o 13% e hōʻoia i ka pale ʻana i ka corrosion maikaʻi a me ke kūpaʻa oxidation. I ka manawa like, hoʻohui pinepine ka ua austenitic paʻakikī i ka titanium, aluminika, vanadium a i ʻole phosphorus e like me nā mea paʻakikī paʻakikī, a hoʻohui i kahi liʻiliʻi o ka boron, vanadium, nitrogen a me nā mea ʻē aʻe e loaʻa ai nā waiwai piha maikaʻi.

Hoʻolei ʻo RMC Foundry i nā ʻano maʻamau maʻamau o ka ua

• 1- Nā kūlana Kina: 05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb
• 2- Kūlana Pelekane: ANC20, ANC21, ANC22
• 3- Nā kūlana ʻAmelika: 630, 634, 17-4PH, 15-5PH, CB7Cu-1
• 4- Nā kūlana Iapana: SCS24, SCS32
• 5- German Standard: 1.4542