Zofunikira pakupanga Chemical,%,
C: ≤0.30
Mtengo: 0.29-1.06
P: ≤0.025
S: ≤0.025
Kulemera kwake: ≥0.10
Kutsika: ≤0.40
Cr: ≤0.30
Kukula: ≤0.40
V: ≤0.08
Nb: ≤0.02
Mo: ≤0.12
*Manganese atha kuonjezedwa ndi 0.05% pakuchepa kulikonse kwa 0.01% kwa carbon mpaka 1.35%.
**Niobium zomwe zili, kutengera mgwirizano, zitha kuonjezedwa mpaka 0.05% pakuwunika kosungunuka ndi 0.06% pakuwunika komaliza.
Zofunikira pakuchiza kutentha:
1. Kutentha kwambiri kuposa 815 ° C.
2. Kutentha pamwamba pa 815 ° C, ndiyeno kupsya mtima.
3. Kutentha kumapangidwa pakati pa 845 ndi 945 ° C, kenako kuzirala mu ng'anjo pamwamba pa 845 ° C (kwa machubu opanda msoko okha).
4. Amapangidwa ndi kutenthedwa monga momwe ziliri pamwamba pa Point 3.
5. Kuwumitsidwa kenako kutenthedwa kupitirira 815°C.
Zofunikira zamakina:
Mphamvu zokolola: ≥240Mpa
Kulimba kwamphamvu: ≥415Mpa
Elongation:
| Chitsanzo | A333 GR.6 | |
| Oima | Chodutsa | |
| Mtengo wochepera wozungulira wokhazikikachitsanzo kapena kachitsanzo kakang'ono kokhala ndi mtunda wa 4D | 22 | 12 |
| Zofananira zamakona anayi zokhala ndi makulidwe a 5/16 in.gawo lonse la 2 in. (50 mm)zizindikiro | 30 | 16.5 |
| Zitsanzo zamakona anayi mpaka 5/16 in. (7.94 mm) makulidwe a khoma ndi mainchesi 2 (50 mm) mtunda wozindikiritsa (m'lifupi wazithunzi 1/2 in., 12.7 mm) | A | A |
A Lolani kuchepetsa 1.5% mu kutalika kwa utali ndi 1.0% kuchepetsa kutalika kopingasa kwa 1/32 iliyonse (0.79 mm) ya makulidwe a khoma mpaka 5/16 in.
Mayeso a Impact
Kutentha Kwambiri: -45°C
Zitsanzo zazing'ono za Charpy zikagwiritsidwa ntchito ndipo m'lifupi mwake ndi notch yachitsanzo ndi yochepera 80% ya makulidwe enieni a zinthuzo, kutentha kocheperako kuyenera kugwiritsidwa ntchito monga momwe zawerengedwera mu Gulu 6 la mafotokozedwe a ASTM A333.
| Mwachitsanzo, mm | Pafupifupi pafupifupi atatu zitsanzo | Mtengo wotsika wa one of zitsanzo zitatu |
| 10 × 10 | 18 | 14 |
| 10 × 7.5 | 14 | 11 |
| 10 × 6.67 | 12 | 9 |
| 10 × 5 pa | 9 | 7 |
| 10 × 3.33 | 7 | 4 |
| 10 × 2.5 | 5 | 4 |
Mipope yachitsulo iyenera kuyesedwa mwa hydrostatically kapena osawononga (eddy current kapena ultrasonic) pa nthambi ndi nthambi.
Kulekerera kwapakati pakunja kwa chitoliro chachitsulo:
| Kunja Diameter, mm | kulolerana kwabwino, mm | kulekerera zoipa, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3＜D≤114.3 | 0.8 | 0.8 |
| 114.3＜D≤219.10 | 1.6 | 0.8 |
| 219.1＜D≤457.2 | 2.4 | 0.8 |
| 457.2＜D≤660 | 3.2 | 0.8 |
| 660＜D≤864 | 4.0 | 0.8 |
| 864＜D≤1219 | 4.8 | 0.8 |
Kulekerera makulidwe a khoma la chitoliro chachitsulo:
Mfundo iliyonse siyenera kukhala yochepera 12.5% ya makulidwe a khoma.Ngati makulidwe ochepa a khoma alamulidwa, palibe mfundo yomwe idzakhala yocheperako kuposa makulidwe a khoma.
Nthawi yotumiza: Feb-22-2024