Kev piav qhia
Lub Alloy Steel Poob Wax Casting yog tsim los ntawm wax poob casting txoj kev. Cov khoom cam khwb cia nrog wax poob txoj kev tsis muaj ib qho ntawm lub plhaub los yog gasket. Nws yog qhov zoo dua los pov cov khoom hollowed nrog nws. Tuam Tshoj tus tsoos peev casting txuj ci muaj kev cuam tshuam zoo rau kev loj hlob thoob ntiaj teb metallurgical. Cov niaj hnub kev lag luam peev precision casting yog muab los ntawm cov tsoos siv quav ciab poob txoj kev. Txawm hais tias lawv sib txawv heev ntawm ib leeg ntawm cov ntaub ntawv siv quav ciab, ua pwm, qauv cov ntaub ntawv thiab cov txheej txheem, lawv cov txheej txheem txheej txheem yog tib yam.
Nta
Qhov Alloy Steel Poob Wax Casting no yog qhov nruab nrab carbon steel, txias taub hau tuag steel. Cov hlau no yog pheej yig thiab yooj yim rau kev ua. Tom qab kev kho cua sov kom zoo, nws muaj qee qhov toughness, plasticity thiab hnav tsis kam. Normalizing tuaj yeem txhawb qhov kev hloov pauv ntawm lub koom haum qhab nia thiab txhim kho kev ua tau zoo. Cov hlau yog tempered ntawm 550 ~ 570 degree, thiab nws cov cuab yeej siv tau zoo tshaj plaws. Cov khoom no muaj ntau dua quenching degree tshaj S45C steel, thiab yog haum rau high zaus quenching thiab nplaim quenching.
Cov khoom siv:
Suav teb GB | Teb chaws USA AISI | UK BS | FRANCH NF | German DIN | Nyiv JIS |
40 Cr | 5140 | 530A40 | 42C4 | 41Cr4 (1.7035) | SCr440 |
30 CrMo | 4130 | / | 30 cd4 | 34CrMo4 (1.7220) | SWM 430 |
42CrMo | 4140 | 708M40 | 42cd4 ua | 42CrMo4 (1.7225) | SWM 440 |
/ | 8620 | 805M20 | 0NCD2 | / | SIB 220 |
Tshuaj muaj pes tsawg leeg:
C: Tsawg dua lossis sib npaug rau 0.38-0.43
Si: Tsawg dua lossis sib npaug rau 0.15-0.35
Mn: Tsawg dua lossis sib npaug rau 0.70-0.90
P: Tsawg dua lossis sib npaug rau 0.035
S: Tsawg dua lossis sib npaug rau 0.040
Cr: 080-1.05
Lub cev muaj zog:
Tensile Strength: σb Ntau dua lossis sib npaug rau 980 MPa
Yield zog: σ0.2 Ntau dua lossis sib npaug rau 785 MPa
Extensibility: δ5Ntau dua lossis sib npaug li 9 feem pua
Hardness: Tsawg dua los yog sib npaug rau 207HB
Specification ntawm kev kho cua sov:
quenching ntawm 850 degree, roj txias; tempering ntawm 520 degree, dej txias thiab roj txias. Qhov saum npoo hardness HRC 52-60, nplaim taws tuaj yeem ncav cuag HRC48-55.
Kev kho nitrogen --- Tom qab kev kho QT thiab nitrogen, qhov siab tshaj plaws hardness tuaj yeem ncav cuag HRC43 ~ 55.
