Zofunikira pakupanga mankhwala,%,
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
Si: ≥0.10
Ni: ≤0.40
Cr: ≤0.30
Cu: ≤0.40
V: ≤0.08
Chidziwitso: ≤0.02
Mwezi: ≤0.12
*Kuchuluka kwa Manganese kungawonjezeke ndi 0.05% pa kuchepa kulikonse kwa 0.01% kwa carbon mpaka 1.35%.
**Kuchuluka kwa Niobium, kutengera mgwirizano, kungawonjezeke mpaka 0.05% pakuwunika kusungunuka ndi 0.06% pakuwunika komaliza kwa chinthu.
Zofunikira pa chithandizo cha kutentha:
1. Sinthani kutentha kukhala koyenera kuposa 815°C.
2. Sinthani kutentha pamwamba pa 815°C, kenako tenthetsani.
3. Kutentha kopangidwa pakati pa 845 ndi 945°C, kenako kuziziritsidwa mu uvuni pamwamba pa 845°C (kwa machubu opanda msoko okha).
4. Yopangidwa ndi makina kenako yokonzedwa motsatira mfundo 3 pamwambapa.
5. Youmitsidwa kenako yofewa pamwamba pa 815°C.
Zofunikira pakugwira ntchito kwa makina:
Mphamvu yotulutsa: ≥240Mpa
Mphamvu yokoka: ≥415Mpa
Kutalika:
| Chitsanzo | A333 GR.6 | |
| Choyimirira | Zosintha | |
| Mtengo wocheperako wa chozungulira chokhazikikachitsanzo kapena chitsanzo chaching'ono chokhala ndi mtunda wa 4D | 22 | 12 |
| Zitsanzo zozungulira zokhala ndi makulidwe a khoma a mainchesi 5/16 (7.94 mm) kapena kupitirira apo, komanso zitsanzo zazing'ono zonse zomwe zayesedwa mugawo lonse la mtanda pa mainchesi awiri (50 mm)zizindikiro | 30 | 16.5 |
| Zitsanzo zamakona mpaka makulidwe a khoma a mainchesi 5.94 (7.94 mm) pa mtunda wolembera mainchesi 50 (m'lifupi mwa chitsanzo ndi 1/2 inchi, 12.7 mm) | A | A |
A Lolani kuchepetsedwa kwa 1.5% mu kutalika kwa nthawi yayitali ndi kuchepetsedwa kwa 1.0% mu kutalika kopingasa kwa 1/32 inchi (0.79 mm) iliyonse ya makulidwe a khoma mpaka 5/16 inchi (7.94 mm) kuchokera ku mitengo yotalikira yomwe yatchulidwa pamwambapa.
Mayeso a Zotsatira
Kutentha kwa Mayeso: -45°C
Pamene zitsanzo zazing'ono za Charpy impact zikugwiritsidwa ntchito ndipo m'lifupi mwa chitsanzocho muli zosakwana 80% ya makulidwe enieni a chinthucho, kutentha kochepa kwa mayeso a impact kuyenera kugwiritsidwa ntchito monga momwe zawerengedwera mu Table 6 ya ASTM A333 specifications.
| Chitsanzo, mm | Avereji yocheperako ya zitsanzo zitatu | Mtengo wocheperako wa pae of zitsanzo zitatu |
| 10 × 10 | 18 | 14 |
| 10 × 7.5 | 14 | 11 |
| 10 × 6.67 | 12 | 9 |
| 10 × 5 | 9 | 7 |
| 10 × 3.33 | 7 | 4 |
| 10 × 2.5 | 5 | 4 |
Mapaipi achitsulo ayenera kuyesedwa ndi madzi kapena osawononga (eddy current kapena ultrasound) pa nthambi iliyonse.
Kulekerera kwa m'mimba mwake wakunja kwa chitoliro chachitsulo:
| M'mimba mwake wakunja, mm | kulekerera kwabwino, mm | kulekerera koipa, 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 chitoliro chachitsulo pakhoma:
Mfundo iliyonse siyenera kukhala yochepera 12.5% ya makulidwe a khoma. Ngati makulidwe a khoma osachepera alamulidwa, palibe mfundo yomwe iyenera kukhala yochepera makulidwe a khoma ofunikira.
Nthawi yotumizira: Feb-22-2024