Tshuaj thiab Mechanical
Tshuaj muaj pes tsawg leeg (wt.%) ntawm Cr12 qib: GB/T 1229-2000
| Cov ntsiab lus |
Yam tsawg kawg nkaus (≥) |
Max. (≤) |
| C |
2.00 |
2.30 |
| Si |
- |
0.40 |
| Mn |
- |
0.40 |
| Cr |
11.50 |
13.00 |
Mechanical zog ntawm qib Cr12 GB/T 1229-2000
Pov thawj muaj zog
Rp0.2 (MPa) |
Tensile zog
Rm (MPa) |
Kev cuam tshuam lub zog
KV (J) |
Elongation ntawm tawg
A (%) |
Kev txo qis hauv ntu ntu ntawm pob txha
Z (%) |
Raws li-kub-kho mob |
Brinell hardness (HBW) |
| 539 (≥) |
215 (≥) |
42 |
14 |
42 |
Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam |
244 |
GB Cr12 alloy cuab yeej steel khoom sib npaug -UNS T30403
| Qib |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
| D3 |
2.00～2.35 |
0.10～0.60 |
0.20～0.60 |
0.030 MAX |
0.030 MAX |
11.0～13.5 |
~ |
MAX 1.00 Nws |
| SKD 1 |
1.90～2.20 |
0.10～0.60 |
0.20～0.60 |
0.030 MAX |
0.030 MAX |
11.0～13.0 |
~ |
MAX 0.30 Nws |
| Cr12 |
2.00～2.30 |
MAX 0.40 Nws |
MAX 0.40 Nws |
0.030 MAX |
0.030 MAX |
11.50～13.00 |
~ |
~ |
| 1.2080/ X210Cr12 |
1.90～2.20 |
0.10～0.40 |
0.15～0.45 |
0.030 MAX |
0.030 MAX |
11.00～12.00 |
~ |
~ |
Kev siv cov khoom siv Cr12 steel
Cr12 steel yog ib hom hlau alloy Tool steel, Cr12 yog Suav Txias Ua Haujlwm Alloy Tool Hlau. Nws Cov Cuab Yeej Cuab Yeej Ua Haujlwm Zoo heev. Cr12 steel nrog siab abrasion tsis kam, micro deformation ntawm txias ua hauj lwm tuag steel, cua hard tool steel, carbon cov ntsiab lus siab li 1.5%, chromium cov ntsiab lus siab li 11.5%, lub tshav kub kho hardness ncav cuag 60 HRC. Cr12 seem hlau tuaj yeem siv rau:
a) silicon tuag yog tsuas yog siv rau me me dynamic loaGBg tej yam kev mob xav tau siab hnav tsis kam, yooj yim duab kos thiab blanking tuag.
b Lub kaw lus rau kev tsim benGBg pwm yuav tsum tau hnav siab, cov duab ntawm cov punch, tuag, ntxig, ua cov punch, thaum tuag pom zoo, hardness 60 ~ 64HCR.
c) rau kev tsim cov duab tuag tuag yuav tsum, nws raug pom zoo hardness 62 ~ 64HCR.
d) rau kev tiv thaiv txias aluminium extrusion tuag punch, nws pom zoo hardness 60 ~ 62HCR.
e) rau benGBg carbon cov ntsiab lus ntawm 0.65% mus rau 0.80% pov thawj builGBg steel, hardness 60 ~ 62HCR.
f) siv tau rau blanking tuag, xuas nrig ntaus, dov lub log, shear hniav, txias heaGBg tuag, av nplaum pwm.
g) tuaj yeem siv rau thermoset yas molGBg pwm.
Forging ntawm Cr12 steel khoom
Preheat maj mam mus rau 900 ~ 950 ° C tom qab ntawd nce qhov kub thiab txias sai dua rau 1050-1100 ° C. Tsis txhob forge hauv qab 1020 ° C. Tom qab ntawd txias Cr12 maj mam tom qab forging.
Annealing ntawm Cr12 steel khoom
GB Cr12 cov cuab yeej steel yog xa tuaj raws li ib txwm muaj ntawm annealing thiab machineable. Yog xav tau re-annealing. Tshav kub rau Cr12 steel 900 ° C thiab Soak kom huv si, ces txias hauv qhov cub. Tom qab annealing, Cr12 xa hardness yog 255HB Max.
Kev ntxhov siab ntawm Cr12 steel khoom
Thaum twg yuav tsum tau cov cuab yeej ua los ntawm Cr12 alloy cov cuab yeej steel yog hnyav machined los yog hauv av, qhov kev pab cuam ntawm sab hauv strains yog advisable ua ntej hardening kom txo tau ntawm distortion. Kev tshem tawm kev ntxhov siab yog qhov tsim nyog heev, kev daws kev ntxhov siab yuav tsum tau ua tom qab kev siv tshuab ntxhib. Txhawm rau txo kev ntxhov siab, ua kom sov cov khoom kom zoo rau 600-650 ° C, tso cai rau lub sijhawm so kom zoo (ob teev ib 25 hli ntawm cov lus txiav txim). Txias hauv qhov cub lossis hauv huab cua. Cov cuab yeej ua tiav machined ua ntej hardening.
Hardening ntawm Cr12 steel khoom
GB Cr12 Kev xa khoom feem ntau yog Annealing, yog li yuav tsum tau hardening. Thaum tshav kub kub cov cuab yeej Cr12 nyob rau hauv lub qhov cub hluav taws xob tswj, yog tias tsis muaj lub tshuab hluav taws xob tswj tau, cov khoom siv tawv tawv tau pom zoo. Pre-heat Cr12 cuab yeej steel rau 750 ~ 800 ° C, tsau sijhawm txaus kom txog thaum tshav kub. Tom qab ntawd coj mus txog 1000-1040 ° C, txias hauv huab cua lossis roj quenching.
Tempering ntawm Cr12 steel khoom
Thaum tshav kub kub GB Cr12, Thaum tshav kub kub sib npaug mus rau qhov ntsuas kub uas tso cai rau lub sijhawm so ntawm ob teev ntawm 25 hli ntawm kev txiav txim. Tshem tawm ntawm qhov cub thiab cia kom txias hauv huab cua. Txawv tempering kub yuav tau txawv hardness. Hom tempering yog 204 ° C, tom qab tempering hardness 61HRc Min.
Vuam ntawm Cr12 steel khoom
Feem ntau, peb tsis qhia cov welGBg ntawm cov cuab yeej hlau alloy, tab sis cov neeg siv qee zaum nyiam vuam kom tsis txhob muaj tus nqi rov qab. Nws yuav tsum tau nco ntsoov tias qib no yog cov cua hardening hlau thiab hais tias nyob rau hauv welGBg cheeb tsam ntawm lub weld attains ib tug kub ntawm txog 1000 ° C. Kev tawg yuav tshwm sim thaum lub caij txias tshwj tsis yog tias muaj kev ceev faj kom raug. Cov txheej txheem nrov ntawm welGBg yog atomic hydrogen thiab argon arc. Peb pom zoo kom koj hu rau koj tus welGBg consumables tsum uas yuav tsum muab koj tag nrho cov kev pab thiab cov ntaub ntawv ntawm welGBg alloy cuab yeej steels.
Nitriding ntawm Cr12 steel khoom
Cr12 alloy cov cuab yeej hlau tuaj yeem ua nitrided los muab cov ntaub ntawv tawv tawv. Tom qab kev kho cua sov nitriGBg, Cr12 yog li tiv taus hnav thiab yaig. NitriGBg kuj ua rau muaj kev tiv thaiv corrosion.
Kev sib tsoo zaum kawg ntawm Cr12 steel khoom
GringGBg lub GB Cr12 Steel. Xaiv qhov raug qib ntawm lub log hauv kev sab laj nrog lub chaw tsim khoom gringGBg. Xyuas kom lub gringGBg log nyob rau hauv qhov zoo los ntawm kev siv cov cuab yeej hnav zoo. ntub gringGBg yog qhov kev xaiv zoo tshaj plaws uas siv cov khoom siv ntau ntawm cov dej txias. Yog hais tias qhuav gringGBg yog resorted rau ces siv ib tug mos mos log.
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