Tshuaj lom neeg cov tshuaj lom neeg yuav tsum tau ua,%,
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
NB: ≤0.02
Mo: ≤0.12
* Cov ntsiab lus manganese yuav nce ntxiv los ntawm 0.05% rau txhua 0.01% txo qis ntawm cov roj carbon cov ntsiab lus txog 1.35%.
** Niobium cov ntsiab lus, raws li kev pom zoo, tej zaum yuav nce nce txog 0.05% rau kev tsom xam mett thiab 0.06% rau cov tshuaj tsom xam tag.
Yuav tsum muaj:
1. Li normalize saum toj no 815 ° C.
2. Li normalize saum toj no 815 ° C, ces TIAB.
3. Kub tsim ntawm 845 thiab 945 ° C, tom qab ntawd txias txias rau hauv cov cub los ua ntej 845 ° C (rau seamless hlab tsuas yog).
4. Machined thiab ces tempered as per saum toj point 3.
5. Hardened thiab ces tempered saum 815 ° C.
Neeg kho tshuab kev ua tau:
Peple zog: ≥240MPA
Lub zog tensile: ≥415MPA
Elongation:
| Khoom sim | A333 Gr.6 | |
| Rov ntsug | Tsheb | |
| Yam tsawg kawg nkaus ntawm tus qauv ncighnoos qeev los yog ib qho me me hnoos qeev nrog cov cim kev deb ntawm 4D | 22 | 12 |
| Lub plaub fab plaub hau nrog cov phab ntsa thicknesses ntawm 5/16 hauv. (7.94 hli) thiab ntau dua, thiab txhua yam me me-qhov me me hnoos qeev sim hauvTag nrho cov ntoo khaub lig-seem ntawm 2 hauv. (50 hli)lub cim | 30 | 16.5 |
| Lub voos xwmtxheej rau 5/16 hauv. (7.94 hli) Phab ntsa tuab ntawm 2 hauv. | A | A |
Ib qho kev cia ib qho 1.5% txo qis nyob rau hauv ntev ntev elongation thiab 1.0% txo hauv transverse elongation rau ntawm 5/16 hauv. (7.94 hli) los ntawm elongation qhov tseem ceeb teev saud.
Cuam Tshuam
Sim ntsuas kub: -45 ° C
Thaum cov hnoos qeev me me yog siv thiab cov hnoos qeev ntawm cov khoom kub tsawg dua 80% ntawm qhov ntsuas kub tsawg dua yuav tsum tau suav nrog kev suav hauv cov lus 6 ntawm cov AVTM A333 kev qhia tshwj xeeb.
| Qauv, HLI | Yam tsawg kawg nkaus hauv peb qhov qauv | Yam tsawg kawg nkaus ntawme of tus peb ntsuas |
| 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 |
Cov kav hlau hlau yuav tsum tau sim hydrostatically lossis tsis muaj kev sib raug zoo (eddy tam sim no lossis ultrasonic) ntawm ib ceg-ceg.
Deverance ntawm sab nraud txoj kab uas hla ntawm cov yeeb nkab steel:
| Sab nraud lub cheeb, hli | Kev thev taus zoo, hli | Tsis pub muaj kev ntxhov siab, hli |
| 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<DIT660 | 3.2 | 0.8 |
| 660<D≤864 | 4.0 | 0.8 |
| 864<D≤1219 | 4.8 | 0.8 |
Phab Ntsa Thickness kam kam rau ntawm cov yeeb nkab steel:
Txhua qhov kis yuav tsum tsis pub tsawg dua 12,5% ntawm cov nominal ntsa tuab. Yog tias qhov tsawg kawg nkaus phab ntsa tuab yog xaj, tsis muaj qhov taw tes yuav tsum tsawg dua li cov phab ntsa uas yuav tsum tau ua tuab.
Lub sij hawm Post: Febroo 22-2024