S45C thiab 45 # steel yog ob hom carbon steels. Txawm hais tias lawv zoo sib xws, lawv txawv ntawm qee yam vim lawv ua raws li cov qauv sib txawv hauv tebchaws.
S45C yog dab tsi?
S45C belongs rau ib hom SC carbon steel teev nyob rau hauv JIS tus qauv. Nws yog cov khoom siv dav dav tshaj plaws thiab cov khoom siv carbon steel siv rau cov khoom siv kho tshuab.
Nws muaj zoo machinability, grindability thiab weldability, thiab nws lub zog thiab hardness tuaj yeem txhim kho los ntawm kev kho cua sov.
45 # steel yog dab tsi?
45 # steel yog cov khoom siv zoo carbon steel hauv GB tus qauv thiab yog cov khoom siv rau kev tsim khoom.
45 # steel muaj cov yam ntxwv ntawm cov yas zoo, siab zog thiab siab rov qab. Nws muaj lub zog siab thiab zoo machinability. Nws tuaj yeem tau txais cov khoom zoo ntawm lub cev thiab kev siv tshuab raws li kev kho cua sov sib txawv.
Kev sib piv
Tshuaj muaj pes tsawg leeg
S45C: "C" sawv cev rau carbon steel, "45" sawv cev rau cov ntsiab lus carbon txog li 0.45%
| Qib | C | Mn | P | S | Si | Cr | Ni | Cu |
| S45C | 0.42-0.48 | 0.60-0.90 | Tsawg dua lossis sib npaug rau 0.030 | Tsawg dua lossis sib npaug rau 0.035 | 0.15-0.35 | Tsawg dua lossis sib npaug rau 0.20 | Tsawg dua lossis sib npaug rau 0.20 | Tsawg dua lossis sib npaug rau 0.30 |
| 45# | 0.42-0.50 | 0.50-0.80 | Tsawg dua lossis sib npaug rau 0.035 | Tsawg dua lossis sib npaug rau 0.035 | 0.17-0.37 | Tsawg dua lossis sib npaug rau 0.25 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.25 |
Mechanical Properties
| Qib | Kub | Tensile zog (N / mm2) | Yield zog (N / mm2) | Elongation (%) | Hardness |
| S45C | Li qub | Ntau dua lossis sib npaug li 570 | Ntau dua lossis sib npaug rau 345 | Ntau tshaj los yog sib npaug rau 20 | 167-229 HWB |
| Quenched / Tempered | Ntau dua lossis sib npaug rau 690 | Ntau dua lossis sib npaug li 490 | Ntau dua lossis sib npaug li 17 | 201-269 HWB | |
| 45# | Ua ntej Kub Kho | Ntau dua lossis sib npaug li 600 | Ntau dua lossis sib npaug rau 355 | Ntau dua lossis sib npaug li 16 | Tsawg dua lossis sib npaug li 229 HB |
| Annealed | Tsawg dua lossis sib npaug li 197 HB |
Lub cev muaj zog
| Qib | Melting Point | Qhov ntom | Elastic Modulus | Poisson tus ratio | Coefficient ntawm Linear Expansion | Thermal conductivity |
| S45C | 1535 degree | 7.84 g / cm 23 | 205 GPa | 0.3 | 11.9 ppm / K | 45 W/m•K |
| 45# | 1370 degree | 7.85 g / cm²3 | 210 GPa | 0.27 | 11.6 ppm / K | 45 W/m•K |
Kev kho cua sov
| Qib |
Txoj kev kho cua sov
|
Kub
|
Txoj kev txias
|
| Li qub | 820-870 degree | Cua txias | |
| S45C | Annealed | 810 degree | Rauv cua txias |
| Quenched | 820-870 degree | Dej txias | |
| Tempered | 550-650 degree | Kev txias txias sai |
S45C muaj cov ductility tsis zoo thiab yog qhov ua rau deformation thiab tawg thaum lub sijhawm quenching, yog li kev kho cua sov yog qhov tseem ceeb heev, thiab yuav tsum tau ua kom txias sai tom qab tempering kom tsis txhob npau taws.
| Qib |
Txoj kev kho cua sov
|
Kub
|
| Li qub | 850 degree | |
| 45# | Quenched | 840 degree |
| Tempered | 600 degree |
Qhov kev ua tau zoo uas tuaj yeem ua tiav tom qab kev kho cua sov ntawm 45 steel yog lub zog tawm los Ntau dua lossis sib npaug rau 355MPa.
Tom qab quenching thiab ua ntej tempering, lub hardness ntawm 45 # hlau yog tsim nyog yog tias nws siab tshaj HRC55 (txog HRC62). Tom qab kev kho cua sov thiab tempering, nws tuaj yeem ncav cuag HRC 42-46, uas tuaj yeem tsis tsuas yog ua kom nws cov khoom siv zoo, tab sis kuj ua tau raws li qhov yuav tsum tau ua kom tawv tawv.
Qhov siab tshaj plaws hardness hauv daim ntawv thov tiag tiag yog HRC55 (HRC58 rau high-frequency quenching).
Tsis txhob siv carburizing thiab quenching cua sov txheej txheem rau 45 # steel.
Kev Xa Khoom
S45C: kub dov
45# : ua
Siv
S45C: Phaj, kav, round bar
Feem ntau siv rau hauv daim ntawv thov uas xav tau kev kho cua sov
Tus nqi yog pheej yig, feem ntau yog siv los tsim cov khoom siv kho tshuab: shafts, pins, bolts, ceev, thiab lwm yam.
Steel 45: round bar, steel phaj
Tom qab quenching thiab tempering, cov khoom muaj cov cuab yeej zoo txhua yam thiab tau siv dav hauv maus taus thiab tsheb, tshwj xeeb tshaj yog cov txuas txuas, bolts, lub zog thiab cov ncej uas ua haujlwm nyob rau hauv kev sib hloov. Lawv yuav tsum tiv taus kev sib txhuam loj heev thaum ua haujlwm, thiab feem ntau siv quenching los txhim kho lawv cov tawv tawv, hnav tsis kam thiab kev pabcuam lub neej.
Qib sib npaug
| GB | JIS | DIN | AFNOR | SAE | UNE | ISO | BS | SS |
| 45 | S45C | 1.0503/C45 | CC45 ua | 1045 | F.114 | C45E4 | IC45/080A47 | 1650 |
