Izidingo Zokwakheka Kwamakhemikhali,%,
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
I-Si: ≥0.10
I-Ni: ≤0.40
I-Cr: ≤0.30
I-Cu: ≤0.40
V: ≤0.08
Inombolo: ≤0.02
UMsombuluko: ≤0.12
*Okuqukethwe kweManganese kungakhushulwa ngo-0.05% ngokuncipha ngakunye kokuqukethwe kwekhabhoni okungu-0.01% kuze kufike ku-1.35%.
**Okuqukethwe kwe-Niobium, ngokusekelwe esivumelwaneni, kungakhushulwa kufike ku-0.05% ekuhlaziyweni kokuncibilika kanye no-0.06% ekuhlaziyweni komkhiqizo oqediwe.
Izidingo zokwelapha ukushisa:
1. Yenza kube ngokwejwayelekile ngaphezu kuka-815°C.
2. Yenza kube ngokwejwayelekile ngaphezu kuka-815°C, bese ufudumala.
3. Kushisa okwakhiwe phakathi kuka-845 no-945°C, bese kupholiswa esithandweni somlilo ngaphezu kuka-845°C (ngamapayipi angenamthungo kuphela).
4. Kufakwe umshini bese kulungiswa njengoba kuchazwe ngenhla Iphuzu 3.
5. Kuqiniswe bese kuqiniswa ngaphezu kuka-815°C.
Izidingo zokusebenza kwemishini:
Amandla okukhiqiza: ≥240Mpa
Amandla okudonsa: ≥415Mpa
Ukunwebeka:
| Isampula | A333 GR.6 | |
| Okuqondile | I-Transverse | |
| Inani eliphansi lendilinga ejwayelekileisampula noma isampula encane enebanga lokumaka elingu-4D | 22 | 12 |
| Amasampula angunxande anobukhulu bodonga obungu-5/16 in. (7.94 mm) nangaphezulu, kanye nawo wonke amasampula amancane ahlolwe kuingxenye ephelele engamasentimitha angu-2 (50 mm)izimpawu | 30 | 16.5 |
| Amasampula angunxande afinyelela ku-5/16 in. (7.94 mm) ubukhulu bodonga ngebanga lokumaka elingama-2 in. (50 mm) (ububanzi besampula 1/2 in., 12.7 mm) | A | A |
A Vumela ukwehla okungu-1.5% ekunwetshweni kwesikhathi eside kanye nokwehla okungu-1.0% ekunwetshweni okuphambeneyo ku-1/32 intshi ngayinye (0.79 mm) yobukhulu bodonga obufika ku-5/16 intshi (7.94 mm) kusukela kumanani okunwetshwa okubalwe ngenhla.
Ukuhlolwa Komthelela
Izinga Lokushisa Lokuhlola: -45°C
Uma kusetshenziswa amasampula amancane omthelela we-Charpy futhi ububanzi be-notch yesampula bungaphansi kuka-80% wobukhulu bangempela bezinto ezibonakalayo, izinga lokushisa eliphansi lokuhlola umthelela kufanele lisetshenziswe njengoba kubalwe kuThebula 6 lencazelo ye-ASTM A333.
| Isampula, mm | Isilinganiso esincane samasampula amathathu | Inani eliphansi kakhulu le-one oamasampula amathathu |
| 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 |
Amapayipi ensimbi kufanele ahlolwe ngamanzi noma ngokungabhubhisi (i-eddy current noma i-ultrasonic) ngesisekelo segatsha ngalinye.
Ukubekezelela ububanzi bangaphandle bepayipi lensimbi:
| Ububanzi Bangaphandle, mm | ukubekezelelana okuhle, mm | ukubekezelelana okungekuhle, 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 |
Ukubekezelela ukujiya kodonga kwepayipi lensimbi:
Noma yiliphi iphuzu akumele libe ngaphansi kuka-12.5% wobukhulu bodonga obujwayelekile. Uma ubukhulu bodonga obuncane buyalelwe, akukho phuzu elizoba ngaphansi kobukhulu bodonga obudingekayo.
Isikhathi sokuthunyelwe: Feb-22-2024