Litlhoko tsa Sebopeho sa Lik'hemik'hale,%,
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
Si: ≥0.10
Na: ≤0.40
Cr: ≤0.30
Cu: ≤0.40
V: ≤0.08
Nomoro: ≤0.02
Khoeli: ≤0.12
*Dikahare tsa Manganese di ka eketsoa ka 0.05% bakeng sa phokotso e nngwe le e nngwe ya 0.01% ya dikahare tsa khabone ho fihlela ho 1.35%.
**Boleng ba Niobium, ho latela tumellano, bo ka eketsoa ho fihla ho 0.05% bakeng sa tlhahlobo ea ho qhibiliha le 0.06% bakeng sa tlhahlobo ea sehlahisoa se felileng.
Litlhoko tsa kalafo ea mocheso:
1. Tlisa maemo a tloaelehileng kaholimo ho 815°C.
2. Tlisa mocheso o tloaelehileng ka holimo ho 815°C, ebe o o futhumatsa.
3. E chesoa ka mocheso o pakeng tsa 845 le 945°C, ebe e phodiswa ka ontong e fetang 845°C (bakeng sa diphaephe tse se nang moedi feela).
4. E hlophisitsoe ka mochini ebe e beoa e benyang ho latela Ntlha ea 3 e kaholimo.
5. E thatafalitsoe ebe e hatsetsoa ka holimo ho 815°C.
Litlhoko tsa ts'ebetso ea mechini:
Matla a tlhahiso: ≥240Mpa
Matla a ho thapolla: ≥415Mpa
Ho lelefatsa:
| Mohlala | A333 GR.6 | |
| Ho otloloha | Ho fapanyetsana | |
| Boleng bo tlase ba selikalikoe se tloaelehilengsampole kapa sampole e nyane e nang le sebaka sa ho tšoaea sa 4D | 22 | 12 |
| Disampole tse kgutlonne tse nang le botenya ba lebota ba 5/16 in. (7.94 mm) le ho feta, le disampole tsohle tse nyane tse lekilweng hokarolo e felletseng ea sefapano ka lisenthimithara tse 2. (50 mm)matšoao | 30 | 16.5 |
| Disampole tse kgutlonnetsepa tse fihlang ho 5/16 in. (7.94 mm) botenya ba lebota ka sebaka sa ho tšoaea sa 2 in. (50 mm) (bophara ba mohlala 1/2 in., 12.7 mm) | A | A |
A Lumella phokotso ea 1.5% ho bolelele ba bolelele ba bolelele le phokotso ea 1.0% ho bolelele bo tšekaletseng bakeng sa 1/32 in. (0.79 mm) e 'ngoe le e 'ngoe ea botenya ba lebota ho fihlela ho 5/16 in. (7.94 mm) ho tsoa boleng ba bolelele bo thathamisitsoeng ka holimo.
Teko ea Tšusumetso
Mocheso oa Teko: -45°C
Ha ho sebediswa disampole tse nyane tsa tshusumetso ya Charpy mme bophara ba notch ya disampole bo le ka tlase ho 80% ya botenya ba nnete ba thepa, mocheso o tlase wa teko ya tshusumetso o lokela ho sebediswa jwalo ka ha ho balwa ho Tafole ya 6 ya tlhaloso ya ASTM A333.
| Sampole, mm | Karolelano e fokolang ea lisampole tse tharo | Boleng bo tlase ba hoe of disampole tse tharo |
| 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 |
Liphaephe tsa tšepe li lokela ho hlahlojoa ka mokhoa oa hydrostatic kapa o sa senyeheng (eddy current kapa ultrasonic) motheong oa lekala ka leng.
Ho mamella bophara ba kantle ba phaephe ea tšepe:
| Bophara ba kantle, mm | mamello e ntle, mm | mamello e mpe, 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 |
Ho mamella botenya ba lebota la phaephe ea tšepe:
Ntlha efe kapa efe ha ea lokela ho ba ka tlase ho 12.5% ea botenya ba lebota bo tloaelehileng. Haeba botenya ba lebota bo bonyane bo laetsoe, ha ho ntlha e tla ba ka tlase ho botenya ba lebota bo hlokahalang.
Nako ea poso: Hlakola-22-2024