I loko o ka ʻōnaehana lawe wai,Kiwikā Mahana Kiʻekiʻehe ʻāpana hoʻomalu koʻikoʻi, nona nā hana nui o ka hoʻoponopono ʻana, ka hoʻohuli ʻana, ka pale ʻana i ke kahe hope, ka ʻoki ʻana, a me ka shunt. Hoʻohana nui ʻia ka valve ma nā ʻoihana ʻoihana a me nā ʻoihana kīwila. ʻO ka valve wela kiʻekiʻe kahi ʻano i hoʻohana pinepine ʻia i nā valves. ʻO kona mau waiwai kikoʻī penei: hana quenching maikaʻi, hiki ke hana i ka quenching hohonu; weldability maikaʻi; hoʻopili maikaʻi o ka hopena, he paʻakikī ke hōʻino iā ia ma ka hana ʻino; ʻOi aku ka liʻiliʻi o ka brittleness wela a pēlā aku. Nui nā ʻano o nā valves wela kiʻekiʻe. ʻO ka mea maʻamau ka wela kiʻekiʻeNā kiwikā pepeke, wela kiʻekiʻeNā kiwikā poepoe, nā kānana wela kiʻekiʻe, a me nā kānana wela kiʻekiʻeNā kiwikā puka.
He aha nā ʻano Valve o nā Valves Mahana Kiʻekiʻe
ʻO nā kiwikā wela kiʻekiʻe e komo pū ana me nā kiwikā puka wela kiʻekiʻe, nā kiwikā pani wela kiʻekiʻe, nā kiwikā nānā wela kiʻekiʻe, nā kiwikā pōpō wela kiʻekiʻe, nā kiwikā pulelehua wela kiʻekiʻe, nā kiwikā nila wela kiʻekiʻe, nā kiwikā throttle wela kiʻekiʻe, a me nā kiwikā hoʻēmi kaomi wela kiʻekiʻe. I waena o lākou, ʻo nā kiwikā puka, nā kiwikā poepoe, nā kiwikā nānā, nā kiwikā pōpō a me nā kiwikā pulelehua ka mea i hoʻohana pinepine ʻia
He aha nā Kūlana Hana o nā Valves Mahana Kiʻekiʻe
ʻO nā kūlana hana wela kiʻekiʻe e komo pū ana me ka mahana haʻahaʻa, ke ana wela kiʻekiʻe Ⅰ, ke ana wela kiʻekiʻe Ⅱ, ke ana wela kiʻekiʻe Ⅲ, ke ana wela kiʻekiʻe Ⅳ, a me ke ana wela kiʻekiʻe Ⅴ, ka mea e hoʻolauna ʻia ma kahi ʻokoʻa ma lalo nei.
Mahana haʻahaʻa kiʻekiʻe
ʻO ke ʻano o ka mahana haʻahaʻa haʻahaʻa, ʻo ia hoʻi ka mahana hana o ka valve ma kahi o 325 ~ 425 ℃. Inā he wai a me ka mahu ka medium, hoʻohana nui ʻia ʻo WCB, WCC, A105, WC6 a me WC9. Inā he ʻaila sulfur ka medium, hoʻohana nui ʻia ʻo C5, CF8, CF3, CF8M, CF3M, a me nā mea ʻē aʻe, i kū i ka corrosion sulfide. Hoʻohana nui ʻia lākou i nā mea hana e hoʻemi ana i ka lewa a me ke kaomi a me nā mea hana coking lohi i nā hale hoʻomaʻemaʻe. I kēia manawa, ʻaʻole hoʻohana ʻia nā valves i hana ʻia me CF8, CF8M, CF3 a me CF3M no ke kūʻē ʻana i ka corrosion o nā hopena waikawa, akā hoʻohana ʻia no nā huahana ʻaila sulfur a me nā pipeline ʻaila a me ke kinoea. Ma kēia kūlana, ʻo ka mahana hana kiʻekiʻe loa o CF8, CF8M, CF3 a me CF3M he 450 ° C.
Mahana kiʻekiʻe Ⅰ
Ke 425 ～ 550 ℃ ka mahana hana o ka valve, he papa wela kiʻekiʻe I ia (i kapa ʻia ʻo ka papa PI). ʻO ka mea nui o ka valve papa PI he "kila wela kiʻekiʻe Ⅰ papa waena kalapona chromium nickel honua rare titanium kiʻekiʻe" me CF8 ma ke ʻano kumu ma ke kūlana ASTMA351. No ka mea he inoa kūikawā ka papa PI, ua hoʻokomo ʻia ke kumumanaʻo o ke kila kila wela kiʻekiʻe (P) ma ʻaneʻi. No laila, inā he wai a mahu paha ka mea hana, ʻoiai hiki ke hoʻohana ʻia ke kila wela kiʻekiʻe WC6 (t≤540 ℃) a i ʻole WC9 (t≤570 ℃), ʻoiai hiki ke hoʻohana ʻia nā huahana ʻaila sulfur i loaʻa i ke kila wela kiʻekiʻe C5 (ZG1Cr5Mo), akā ʻaʻole hiki ke kapa ʻia lākou he papa PI ma ʻaneʻi.
Mahana kiʻekiʻe II
ʻO ka mahana hana o ka valve he 550 ~ 650 ℃, a ua hoʻokaʻawale ʻia ʻo ia he kiʻekiʻe wela Ⅱ (i kapa ʻia ʻo P Ⅱ). Hoʻohana nui ʻia ka valve wela kiʻekiʻe o ka papa PⅡ i nā mea haki catalytic aila kaumaha o ka hale hoʻomaʻemaʻe. Loaʻa iā ia ka valve puka pale wela kiʻekiʻe i hoʻohana ʻia i ka nozzle ʻekolu-rotation a me nā ʻāpana ʻē aʻe. ʻO ka mea nui o ka valve papa PⅡ he "kiʻekiʻe wela Ⅱ papa medium carbon chromium nickel rare earth titanium tantalum i hoʻoikaika ʻia i ka wela" me CF8 ma ke ʻano kumu ma ke kūlana ASTMA351.
Mahana kiʻekiʻe III
ʻO ka mahana hana o ka valve he 650 ~ 730 ℃, a ua hoʻokaʻawale ʻia ʻo ia he kiʻekiʻe wela III (i kapa ʻia ʻo PⅢ). Hoʻohana nui ʻia nā valves wela kiʻekiʻe o ka papa PⅢ i nā ʻāpana haki catalytic aila kaumaha nui i nā hale hoʻomaʻemaʻe. ʻO ka mea nui o ka valve wela kiʻekiʻe o ka papa PⅢ ʻo ia ka CF8M e pili ana iā ASTMA351.
Mahana kiʻekiʻe Ⅳ
ʻO ka mahana hana o ka valve he 730 ~ 816 ℃, a ua helu ʻia ʻo ia he mahana kiʻekiʻe IV (i kapa ʻia ʻo PIV no ka pōkole). ʻO ka palena kiʻekiʻe o ka mahana hana o ka valve PIV he 816 ℃, no ka mea, ʻo ka mahana kiʻekiʻe loa i hāʻawi ʻia e ka pae mahana-paʻa ASMEB16134 i koho ʻia no ka hoʻolālā valve he 816 ℃ (1500υ). Eia kekahi, ma hope o ka ʻoi aku o ka mahana hana ma mua o 816 ° C, ua kokoke ke kila e komo i ka ʻāpana mahana forging. I kēia manawa, aia ka metala i loko o ka ʻāpana deformation plastic, a he plasticity maikaʻi ka metala, a he paʻakikī ke kū i ke kaomi hana kiʻekiʻe a me ka ikaika hopena a pale iā ia mai ka deforming. ʻO ka mea nui o ka valve P Ⅳ ʻo CF8M ma ke kūlana ASTMA351 ma ke ʻano kumu "kiʻekiʻe wela Ⅳ medium carbon chromium nickel molybdenum rare earth titanium tantalum i hoʻoikaika ʻia i ke kila pale wela". ʻO ke kūlana CK-20 a me ASTMA182 F310 (me ka ʻike C ≥01050%) a me ke kila kila kūpaʻa wela F310H.
Mahana kiʻekiʻe Ⅴ
ʻOi aku ka mahana hana o ka valve ma mua o 816 ℃, i kapa ʻia ʻo PⅤ, pono ka valve wela kiʻekiʻe PⅤ (no nā valve pani, ʻaʻole e hoʻoponopono i nā valve butterfly) e hoʻohana i nā ʻano hoʻolālā kūikawā, e like me ka uhi ʻana i ka insulation lining a i ʻole ka wai a i ʻole ke kinoea. Hiki i ka hoʻoluʻu ʻana ke hōʻoia i ka hana maʻamau o ka valve. No laila, ʻaʻole i kuhikuhi ʻia ka palena kiʻekiʻe o ka mahana hana o ka valve wela kiʻekiʻe o ka papa PⅤ, no ka mea, ʻaʻole i hoʻoholo wale ʻia ka mahana hana o ka valve kaohi e ka mea, akā e nā ʻano hoʻolālā kūikawā, a like ke kumu kumu o ke ʻano hoʻolālā. Hiki i ka valve wela kiʻekiʻe papa PⅤ ke koho i nā mea kūpono e hiki ke hoʻokō i ka valve e like me kāna medium hana a me ke kaomi hana a me nā ʻano hoʻolālā kūikawā. I ka valve wela kiʻekiʻe papa PⅤ, ʻo ka flapper a i ʻole ka valve butterfly o ka flue flapper valve a i ʻole ka butterfly valve i koho pinepine ʻia mai nā alloys wela kiʻekiʻe HK-30 a me HK-40 ma ke kūlana ASTMA297. Kūpaʻa i ka palaho, akā ʻaʻole hiki ke kū i nā ukana haʻalulu a me ke kaomi kiʻekiʻe.
Ka manawa hoʻouna: Iune-21-2021