30CrMo alloy irin pipe

Apejuwe kukuru:

Sipesifikesonu iṣelọpọ:

Lode opin ti irin pipe 20-426

Irin paipu odi sisanra ti 20-426

Ifihan ọja:

① Awọn nọmba meji ni ibẹrẹ nọmba irin tọkasi akoonu erogba ti irin, pẹlu apapọ akoonu erogba ti ẹgbẹrun diẹ, gẹgẹbi 40Cr, 30CrMo alloy steel pipe

② Awọn eroja alloying akọkọ ni irin, ayafi diẹ ninu awọn eroja microalloying, ni gbogbogbo ti ṣafihan nipasẹ ọpọlọpọ ogorun.Nigbati akoonu alloy apapọ ba kere ju 1.5%, aami ano nikan ni a samisi ni nọmba irin, ṣugbọn kii ṣe akoonu naa.Sibẹsibẹ, ni awọn ọran pataki, o rọrun lati daamu, nọmba “1 ″ le jẹ samisi lẹhin aami ano, gẹgẹbi nọmba irin “12CrMoV” ati “12Cr1MoV”, akoonu chromium ti iṣaaju jẹ 0.4-0.6%, ati pe ti igbehin jẹ 0.9-1.2%.Gbogbo ohun miiran jẹ kanna.Nigbati akoonu ipin alloying apapọ ≥1.5%, ≥2.5%, ≥3.5%……”, aami ano yẹ ki o samisi lẹhin akoonu, o le ṣafihan bi 2, 3, 4……….Fun apẹẹrẹ, 18Cr2Ni4WA.

③ Alloy eroja bi vanadium V, titanium Ti, aluminiomu AL, boron B ati toje aiye RE ni irin wa si microalloying eroja.Botilẹjẹpe akoonu naa kere pupọ, wọn yẹ ki o tun samisi lori nọmba irin.Fun apẹẹrẹ, ni irin 20MnVB.Vanadium jẹ 0.07-0.12% ati boron jẹ 0.001-0.005%.

④ "A" yẹ ki o fi kun ni opin nọmba irin ti irin-giga ti o ga julọ lati ṣe iyatọ rẹ lati gbogboogbo ti o ga didara.

⑤ Idi pataki alloy irin igbekalẹ, irin nọmba ìpele (tabi suffix) duro fun idi ti aami irin.Fun apẹẹrẹ, irin 30CrMnSi ti a lo ni pataki fun awọn skru riveting jẹ afihan bi ML30CrMnSi.

Imọ-ẹrọ iṣelọpọ:

1. Yiyi gbigbona (extrusion seamless, steel pipe): òfo tube tube → alapapo → perforating → sẹsẹ diagonal mẹta-giga, lilọsiwaju sẹsẹ tabi extrusion → idinku → iwọn (tabi idinku) → itutu → taara → idanwo hydrostatic (tabi ayewo) → isamisi → ibi ipamọ

2. Tutu kale (yiyi) paipu irin ti ko ni oju: tube tube ofo → alapapo → perforation → akọle → annealing → pickling → oiling (para plating) → olona-kọja tutu iyaworan (yiyi tutu) → tube òfo → itọju ooru → taara → idanwo hydrostatic (ayẹwo) → isamisi → ibi ipamọ