Ngā Whakaritenga Hanganga Matū，%，
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
Si: ≥0.10
Ni: ≤0.40
Kr: ≤0.30
Cu: ≤0.40
V: ≤0.08
Tau: ≤0.02
Mo: ≤0.12
*Ka taea te whakanui ake i te nui o te konupūmā mā te 0.05% mō ia hekenga 0.01% o te nui o te waro tae atu ki te 1.35%.
**Ka taea te whakanui ake i te nui o te niobium, i runga i te whakaaetanga, ki te 0.05% mō te tātari rewa me te 0.06% mō te tātari hua kua oti.**
Ngā whakaritenga maimoatanga wera:
1. Whakapūmautia te pāmahana ki runga ake i te 815°C.
2. Whakarerekētia kia teitei ake i te 815°C, kātahi ka whakamahana.
3. I hangaia kia wera i waenga i te 845 me te 945°C, kātahi ka whakamataohia i roto i te oumu i runga ake i te 845°C (mō ngā ngongo tuitui anake).
4. I mīhinihia, kātahi ka whakamahanahia kia rite ki te Wāhanga 3 o runga ake nei.
5. Whakamārōhia, kātahi ka whakamaroketia ki runga ake i te 815°C.
Ngā whakaritenga mahi ā-mīhini:
Kaha tuku: ≥240Mpa
Kaha kume: ≥415Mpa
Te roanga：
| Tauira | A333 GR.6 | |
| Poutū | Whakapae | |
| Te uara iti rawa o tētahi porowhita paerewatauira, tauira iti rānei me te tawhiti tohu o te 4D | 22 | 12 |
| Ngā tauira tapawhā rite me te matotoru o te pakitara o te 5/16 inihi (7.94 mm) me te nui ake, me ngā tauira iti katoa i whakamatautauria i roto ite wāhanga whakawhiti katoa i te 2 inihi (50 mm)ngā tohu | 30 | 16.5 |
| Ngā tauira tapawhā rite ki te matotoru o te pakitara tae atu ki te 5/16 inihi (7.94 mm) i te tawhiti tohu 2 inihi (50 mm) (whānui tauira 1/2 inihi, 12.7 mm) | A | A |
Tukua kia 1.5% te whakahekenga o te toronga roa me te 1.0% te whakahekenga o te toronga whakawhiti mō ia 1/32 inihi (0.79 mm) o te matotoru o te pakitara tae atu ki te 5/16 inihi (7.94 mm) mai i ngā uara toronga kua whakarārangihia i runga ake nei.
Whakamātautau Pānga
Te pāmahana whakamātautau: -45°C
Ina whakamahia ngā tauira pānga Charpy iti, ā, he iti iho i te 80% o te matotoru tuturu o te rauemi te whānui o te kōhao tauira, me whakamahi he pāmahana whakamātautau pānga iti iho e ai ki te tātaitanga i te Ripanga 6 o te whakatakotoranga ASTM A333.
| Tauira, mm | Te toharite iti rawa o ngā tauira e toru | Te uara iti rawa o rungae ongā tauira e toru |
| 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 |
Me whakamātautau ngā paipa rino mā te whakamahi i te wai ā-pūmau, mā te kore rānei e whakangaro (iahiko hurihuri, iahiko ultrasonic rānei) i ia peka.
Te manawanui o te diameter o waho o te paipa maitai:
| Diameter o Waho, mm | manawanui pai, mm | manawanui kino, 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 |
Te ātete matotoru o te pakitara o te paipa maitai:
Kaua tetahi pūwāhi e iti iho i te 12.5% o te matotoru o te pakitara ingoa. Mēnā ka whakaritea te matotoru iti rawa o te pakitara, kaua tetahi pūwāhi e iti iho i te matotoru e hiahiatia ana.
Te wā tuku: 22-Pepuere-2024