SCM440H Iav Steel Bar
Khoom Piav Qhia SCM440H iav steel bar yog dav siv nyob rau hauv lub tshav pob ntawm mechanical kis tau tus mob vim nws cov kev ua tau zoo heev. Txawm li cas los xij, hauv qee qhov kev siv, yuav tsum muaj zog dua. Nov yog qee txoj hauv kev los txhim kho qhov toughness ntawm SCM440H iav steel bar. Ib txoj hauv kev zoo yog los ntawm ...
Hauj lwm lawm
Khoom Description
SCM440H Iav Steel Bar Tshuaj muaj pes tsawg leeg:
| C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.38 - 0.45 | max 0.4 | 0.6 - 0.9 | max 0.025 | max 0.035 | 0.9 - 1.2 | 0.15 - 0.3 |
Mechanical zog:
| Nominal txoj kab uas hla (mm): | rau 16 | 16 - 40 | 40 - 100 | 100 - 160 | 160 - 250 | 250 - 330 | 330 - 660 |
|---|---|---|---|---|---|---|---|
| Rm - Tensile zog (MPa) (+ QT) | 1100-1300 | 1000-1200 | 900-1100 | 800-950 | 750-900 | 700 | 600 |
| Nominal thickness (hli): | 0.3 - 3 | ||||||
| Rm - Tensile zog (MPa) (+A) | 620 | ||||||
| Rm - Tensile zog (MPa) (+ AC) | 630 | ||||||
| Nominal thickness (hli): | rau 8 | 8 - 20 | 20 - 50 | 50 - 80 | |||
| Rm - Tensile zog (MPa) (+ QT) | 1100 | 1000 | 900 | 800 | |||
| Rm - Tensile zog (MPa) (+ C) | 720 | ||||||
| Rm - Tensile zog (MPa) (+ LC) | 670 | ||||||
Ib txoj hauv kev zoo yog los ntawm kev kho cua sov kom raug. quenching thiab tempering tuaj yeem txhim kho qhov toughness ntawm cov hlau. Thaum lub sij hawm quenching, cov hlau tau txias sai heev los tsim cov qauv martensitic, uas muab lub zog siab. Tom qab ntawd, tempering yog nqa tawm los txo qhov brittleness ntawm martensite thiab txhim kho toughness. Lub tempering kub thiab lub sijhawm yuav tsum tau ua tib zoo tswj kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Lwm txoj hauv kev yog txhawm rau txhim kho cov tshuaj muaj pes tsawg leeg ntawm cov hlau. Ntxiv cov ntsiab lus alloying tsim nyog tuaj yeem txhim kho qhov toughness ntawm SCM440H. Piv txwv li, npib tsib xee tuaj yeem txhim kho cov ductility thiab toughness ntawm cov hlau. Manganese kuj tseem tuaj yeem pab ua kom tawv nqaij los ntawm kev txhawb kev tsim cov microstructure zoo dua. Txawm li cas los xij, qhov sib ntxiv ntawm cov ntsiab lus alloying yuav tsum sib npaug kom tsis txhob cuam tshuam rau lwm yam khoom.
Kev tswj cov txheej txheem tsim khoom kuj tseem ceeb heev. Ua kom zoo melting, casting, thiab forging txheej txheem yuav ua rau ib tug ntau homogeneous microstructure, uas yog zoo rau toughness. Zam kev sib cais ntau dhau thiab qhov tsis xws luag thaum cov txheej txheem no tuaj yeem txhim kho tag nrho cov khoom zoo ntawm steel bar.
Tsis tas li ntawd, cov txheej txheem tom qab kev kho mob xws li kev txhaj tshuaj peening lossis kev kho saum npoo tuaj yeem txhim kho qhov tawv ntawm SCM440H iav steel bar. Kev txhaj tshuaj peening tuaj yeem ua kom paub cov kev ntxhov siab seem ntawm qhov chaw, uas tuaj yeem txhim kho qhov qaug zog thiab tawv tawv ntawm cov hlau. Txoj kev kho deg zoo li nitriding lossis carburizing tuaj yeem tsim cov txheej txheem tawv tawv ntawm qhov chaw, thaum tuav cov tub ntxhais tawv.
Hauv kev xaus, kev txhim kho lub zog ntawm SCM440H iav steel bar tuaj yeem ua tiav los ntawm kev kho cua sov kom zoo, ua kom cov tshuaj muaj pes tsawg leeg, tswj cov txheej txheem tsim khoom, thiab siv cov txheej txheem tom qab kho. Los ntawm kev siv cov qauv no, kev ua tau zoo thiab kev ntseeg siab ntawm SCM440H iav steel bar tuaj yeem txhim kho ntxiv, ua tau raws li qhov xav tau ntawm ntau yam kev siv.
Cim npe nrov: scm440h iav steel bar, Tuam Tshoj scm440h iav steel bar lwm tus neeg, hoobkas
