1 1.2550 Taw qhia:
1.2550 Txias ua hauj lwm steel nrog zoo heev toughness, dimensionally ruaj khov, cuam tshuam resistant, siab hardening muaj peev xwm. Zoo ib yam li AISI S1.
2 1.2550 Daim Ntawv Thov:
Cov ntawv thov muaj xws li mandrel tuav rau kos cov raj steel, swaging, kuj xuas nrig ntaus, tho, trimming tuag thiab shear hniav, sib sau thiab gripper tuag.
3 Tus Qauv Zoo:
BS-EN-ISO-4957-2000 Cov cuab yeej hlau
4 Txhua Qib Sib Piv:
| ASTM | Khoom No. | EN |
|---|---|---|
| S1 | 1.2550 | 60 AWV8 |
5 1.2550 Chemical Composition(%)
| Qib Steel | C | Si | Mn | P | S | Cr | Mo | V | W |
|---|---|---|---|---|---|---|---|---|---|
| 1.2550 | 0.55-0.65 | 0.70-1.00 | 0.15-0.45 | 0.030 max | 0.030 max | 0.90-1.20 | / | 0.10-0.20 | 1.70-2.00 |
6 Kev kho cua sov:
- FORGING: Kub cov hlau ua tib zoo rau qhov kub ntawm 1000-1050 degree thiab forge nrog lub teeb nrawm nrawm. Rov ua dua thaum kub poob qis dua 900 degree yog tias tseem ua haujlwm ntxiv. Tom qab forging, txias maj mam, hom phiaj hauv qhov cub.
- ANNEALING: Ua kom sov cov khoom maj mam thiab sib npaug mus rau 800-810 degree . So kom huv si rau ob mus rau peb teev thiab maj mam txias hauv qhov cub.
- STRESS RELIEVING: Yog tias kev ua haujlwm machining tau hnyav heev, peb pom zoo kom ua kom ruaj khov ua ntej cov cuab yeej ua tiav tshuab kom txo tau cov tshuab ua haujlwm. Tshav kub maj mam mus rau qhov kub ntawm 700 degree, cia kom txias hauv huab cua.
- HARDENING: Preheat ntawm 650 degree ua raws li qhov kub thiab txias nce mus rau 900-950 degree . Quench hauv roj. Tempering ntawm qib no yog ib txwm pom zoo tom qab hardening.
- TEMPERING: Tshav kub maj mam mus rau qhov yuav tsum tau tempering kub, tsau kom huv si rau ob teev ntawm 25mm seem thiab cia kom txias hauv huab cua. Rau cov ntawv thov ua haujlwm kub, qhov tsawg kawg nkaus tempering kub ntawm 550 degree yuav tsum tau siv.
Rov qab mus rau saum
7 Mill's xeem daim ntawv pov thawj:
TS EN 10204 / 3.1 Cov ntaub ntawv tsim nyog chem. kev, mech. cov khoom thiab cov txiaj ntsig ntawm kev sim.
Cim npe nrov: 60wcrv8 txias ua hauj lwm steel bar, Tuam Tshoj, manufacturers, lwm tus neeg, Hoobkas