Ⅰ-He aha te maitai mate mahi makariri Cr12MoV?
Ko te maitai mate mahi matao Cr12MoV i hangaia e Zhongao kei roto i te kāwai o te maitai taputapu whakarerekētanga moroiti ātete-mau, e tohuhia ana e te ātete mau, te pakeketanga, te whakarerekētanga moroiti, te pumau wera teitei, te kaha piko teitei, me ētahi atu āhuatanga. Ko te tuarua anake i te maitai tere-teitei, ā, he rauemi nui mō te tā, te pane matao, me ētahi atu rauemi. Ko te maitai mate Cr12MoV he maitai waro molybdenum ledeburite he iti ake te ihirangi waro i te maitai Crl2. Ka tāpirihia te molybdenum me te vanadium hei whakapai ake i te mahi mahi wera, te pakari pānga me te tohatoha carbide o te maitai. He iti ake te ihirangi waro o te maitai mate Cr12MoV i te maitai mate Cr12. Mā te tāpiri i ngā huānga koranu hou ka whakapai ake i te āhuatanga o te carbide kore taurite. Heoi anō, ka taea e te molybdenum me te molybdenum te whakaiti i te wehenga carbide me te whakapai ake i te pakeketanga. Ka taea e te vanadium me te vanadium te whakapai ake i ngā kakano me te whakanui ake i te pakari. Nō reira, he tino pakari te maitai pokepokea ai a Zhongao Cr12MoV, me te whakawhiti-wāhanga i raro i te 400mm ka taea te tinei katoa, ā, ka taea tonu te pupuri i te pakeke me te ātete ki te kakahu i te 300-400 ℃. Haunga tēnā, he pai ake te pakari o te maitai pokepokea ai a Zhongao Cr12MoV i ētahi atu rauemi o te taumata kotahi i te mākete whānui, ā, he tino whakaitihia te tūponotanga o te huringa rōrahi i te wā tinei. Nō reira, nā tōna ātete kakahu teitei me ōna āhuatanga miihini whānui pai, he pai ake te maitai pokepokea ai a Jinbaicheng Cr12MoV mō te hanga i ngā momo pokepokea ai he whakawhiti-wāhanga nui, he āhua uaua, he ātete ki ngā pānga nui, me ngā taputapu tā matao i raro i ngā āhuatanga mahi taumaha, pērā i ngā mate patu, ngā mate kuti, ngā mate hurihuri, me ētahi atu. Ko te mate kume hohonu pereti maitai, te kani porowhita, ngā taputapu paerewa me ngā taputapu ine, te mate hurihuri miro, me ētahi atu.
Ⅱ-Aratohu Whakamahinga o te Rino Mate Mahi Matao Cr12MoV
① Ka taea te whakamahi i te Cr12MoV hei hanga i ngā āhua uaua o ngā poraka kōpiko, kōpiko, me ngā poraka whakauru hei wero i ngā pokepokea me te matotoru o te rauemi >3mm. E taunakihia ana kia 58~62HRC te pakeke ina hanga pokepokea kōpiko, ā, 60~64HRC ina hanga pokepokea kōpiko.
② Mō te hanga pokepokea ai he pūwero me he pokepokea ai he ātete ki te kakahu, e taunakihia ana kia 60~62HRC te pakeke ina hangaia te pokepokea ai, ā, kia 62~64HRC hoki ina hangaia te pokepokea ai he pūwero.
③ Mō te hanga i ngā pokepokea kōpiko ātete-kakahu i roto i ngā pokepokea hōhonu, e taunakihia ana kia 62~64HRC te pakeke.
④ Whakamahia mō te hanga pokepokea kōpiko, pokepokea kōpiko, me ngā poraka whakauru e hiahia ana ki te ātete nui ki te kakahu me ngā āhua uaua i roto i ngā pokepokea piko. E taunakihia ana kia 60-64HRC te pakeke ina hanga pokepokea kōpiko, me te 60-64HRC ina hanga pokepokea kōpiko.
⑤ Mō te hanga i ngā mate whakaputa matao me ngā mate mō ngā wāhanga konumohe, e taunakihia ana kia 60-62HRC te pakeke ina hangaia ngā mate, me te 62-64HRC ina hangaia ngā mate.
⑥ E taunakihia ana kia whakamahia he pakeke o te 62~64HRC mō ngā pokepokea kōpiko me ngā pokepokea kōpiko e whakamahia ana mō te hanga pokepokea parahi matao.
⑦ Ko ngā pokepokea kōpiko me ngā pokepokea kōpiko e whakamahia ana mō ngā pokepokea whakarewa matao kia 62~64HRC te pakeke.
⑧ Ko ngā pereti maitai puna me te wāhanga papatipu o te 0.65%~0.80% e whakamahia ana mō te hanga waro he pakeke o te 37~42HRC, e whakarato ana i te roanga ora tae atu ki te 150000 huringa.
⑨ Ko ngā pereti maitai puna me te wāhanga papatipu o te 0.65% ki te 0.80% e whakamahia ana mō te hanga waro he pakeke o te 37-42HRC, ā, mā te maimoatanga nitriding tāpiri, ka eke te roa o tō rātou ora mahi ki te 400,000 ngā wā.
Ⅲ-Te Tukatuka o te Rino Mate Mahi Matao Cr12MoV:
Ngā Whakatakotoranga mō te Whakangawari i te Pūwero Matao: Tiakina, whakamahanatia hoki te pūwero ki ngā kongakonga rino i te pāmahana 760-780 ℃ mō ngā hāora 10, me te whakamatao i roto i te oumu me te pakeke o te 196HBW. Ka taea te hanga pūwero matao mā te ngāwari.
Ngā Whakatakotoranga mō te whakamahana porowhita isothermal noa: 850-870 ℃ × 3-4 hāora, whakamataohia i roto i te oumu ki te 740-760 ℃ × 4-5 hāora o te maimoatanga isothermal, me te pakeke whakamatao hau ≤ 241HBW, te karaehe carbide eutectic ≤ 3, te pāmahana isothermal tino pai 740-76o ℃, me te wā ≥ 4-5 hāora.
Whakatakotoranga mō te whakamahana porowhita: (860 ± 10) ℃ × 2-4 hāora, whakamatao i roto i te oumu i te tere whakamatao o te 30 ℃/hāora, (740 ± 10) °C x 4-6 hāora, whakamatao āta ki te 500-600 ℃ me te oumu, whakamatao hau i muri i te tukunga, pakeke 207-255HBW.
Ngā whakatakotoranga whānui mō te tinei me te whakamahana: te pāmahana tinei 1000-1050 ℃, te tinei hinu, te tinei rānei, te pakeke 260HRC, te pāmahana whakamahana 160-180, te wā whakamahana 2 hāora, te pāmahana whakamahana 325-375 ° C rānei, te whakamahana 2-3 wā.
He iti te pāmahana tinei me te iti o te hokinga mai o te pāmahana tinei: 950 ℃ -1040 ℃, ko te pāmahana whakamahana he tata ki te 200 ℃, ko te whakamahana tuarua.
Te pāmahana tinei teitei me te pāmahana whakahoki teitei: 1050-1100 ℃, ko te pāmahana whakamahana kei te 520 ℃, ko te whakamahana tuarua. Mā te tikanga whakapakeke tuarua e whakamahia ana mō te tinei teitei me te hangarua teitei ka whakapai ake i te pakeke, engari ka tupu ngā kakano.
Maimoatanga cryogenic: Ka tukuna te maitai Cr12MoV ki te maimoatanga cryogenic, ka taea te whakaputa i ngā warowaiha tino pai kua marara mai i te martensite kua tineia, kātahi ka taea te huri i ēnei warowaiha tino pai hei warowaiha i muri i te whakamahana pāmahana iti 200 ℃. Ko te martensite, me te kore maimoatanga cryogenic, ka whakaputa noa i te iti o te warowaiha i ētahi wāhi o te rohe i muri i te ahi porowhita pāmahana iti.
E whakamahi ana a Zhongao i tētahi tikanga maimoatanga wera matū pāmahana-iti, e pupuri ana i te pakeketanga teitei me te ātete ki te kakahu o te maitai Cr12MoV. E toru ngā paparanga maimoatanga wera matū pāmahana-iti e whakamahia whānuitia ana, arā, te nitriding katote, te nitrocarburizing hau, me te nitriding co cyanide sulfur bath salt bath, he ātete nui ki te pānga me te piri, ko te nitriding co cyanide sulfur bath salt bath te mea pai rawa atu.
Ko te roa o te ora o te mate tuhi mō ngā taputapu maitai kore waikura Cr12MoV a Zhongao, whai muri i te maimoatanga nitrocarburization hau, ka eke ki te neke atu i te 30000 nga wahi, he 10 nga wa te roa atu i tera o nga pokepokea rite i tukatukahia ki te tinei me te whakamahana tikanga.
Wā tuku: Mei-23-2024