30CrMo aluminium bir bir ah

Sharaxaad Gaaban:

Tilmaamaha wax soo saarka:

Dhexroorka dibadda ee tuubada birta 20-426

Dhumucda gidaarka birta ee 20-426

Soo bandhigida alaabta:

① Labada nambar ee bilowga lambarka birta waxay muujinayaan kaarboonka birta, iyadoo celceliska kaarboonka ka kooban yahay dhowr kun, sida 40Cr, 30CrMo birta birta ah

② Curiyayaasha alloying-ka ugu muhiimsan ee birta, marka laga reebo qaar ka mid ah canaasiirta microalloying, waxaa guud ahaan lagu muujiyey dhowr boqolkiiba.Marka celceliska nuxurka daawaha uu ka yar yahay 1.5%, kaliya calaamadda curiyaha ayaa guud ahaan lagu calaamadeeyay lambarka birta, laakiin ma aha waxa ku jira.Si kastaba ha noqotee, xaaladaha gaarka ah, way fududahay in la jahwareeriyo, lambarka "1" waxaa lagu calaamadin karaa calaamadda curiyaha, sida lambarka birta "12CrMoV" iyo "12Cr1MoV", ka kooban chromium kii hore waa 0.4-0.6%, tan dambena waa 0.9-1.2%.Wax kasta oo kale waa isku mid.Marka celceliska maadada alloying element ≥1.5%, ≥2.5%, ≥3.5%……“, calaamada curiyaha waa in la calaamadiyaa ka dib nuxurka, waxaa lagu tilmaami karaa sida 2, 3, 4…… iwm. Tusaale ahaan, 18Cr2Ni4WA.

③ Walxaha alwaaxyada ah sida vanadium V, titanium Ti, aluminium AL, boron B iyo naadirka dhulka RE ee birta waxay ka tirsan yihiin curiyeyaasha microalloying.Inkasta oo waxa ku jira uu aad u hooseeyo, haddana waa in lagu calaamadiyaa lambarka birta.Tusaale ahaan, 20MnVB birta ah.Vanadium waa 0.07-0.12% boronkuna waa 0.001-0.005%.

④ "A" waa in lagu daraa dhamaadka nambarka birta ee birta heerka sare ah si looga sooco birta guud ee tayada sare leh.

⑤ Ujeedada gaarka ah ee daawaha qaab dhismeedka birta, horgalaha nambarka birta (ama dabadhilif) ayaa u taagan ujeedada astaanta birta.Tusaale ahaan, birta 30CrMnSi ee si gaar ah loogu isticmaalo birta birta ah waxaa lagu muujiyey ML30CrMnSi.

Farsamada wax-soo-saarka:

1. Dulitaanka kulul (extrusion bir bir ah oo aan kala go 'lahayn): tuubo wareeg ah oo bannaan → kululaynta → daloolin → rogo saddex-geesood sare leh, duubid joogto ah ama extrusion → kaydinta

2. Qabow-jiiraan (duuban) tuubo bir ah oo aan fiicneyn: tuubo wareeg ah oo bannaan → kululaynta → dalool → ciwaanka → nuugista → qashin → Saliid (darin naxaas ah) baaritaanka hydrostatic (baaritaan) → calaamadeyn → kaydinta