Achọrọ ihe mejupụtara kemịkalụ,%
C: ≤0.30
Ọnụ: 0.29-1.06
P: ≤0.025
S: ≤0.025
Ebe: ≥0.10
Aha: ≤0.40
Kr: ≤0.30
Ihe: ≤0.40
V: ≤0.08
Nb: ≤0.02
Mo: ≤0.12
* Enwere ike ịbawanye ọdịnaya manganese site na 0.05% maka mbelata 0.01% ọ bụla na ọdịnaya carbon ruo 1.35%.
** Ọdịnaya Niobium, dabere na nkwekọrịta, enwere ike ịbawanye ruo 0.05% maka nyocha agbaze yana 0.06% maka nyocha ngwaahịa emechara.
Achọrọ ọgwụgwọ okpomọkụ:
1. Normalize n'elu 815°C.
2. Normalize n'elu 815 ° C, wee iwe.
3. Na-ekpo ọkụ na-etolite n'etiti 845 na 945 ° C, wee mee ka ọ dị mma n'ọkụ n'elu 845 ° C (maka tubes na-enweghị ntụpọ).
4. Machined wee were iwe dị ka n'elu Point 3.
5. Na-esi ike wee na-ewe ọkụ n'elu 815 ° C.
Achọrọ ịrụ ọrụ igwe:
Ike mpụta: ≥240Mpa
Ike ntanye: ≥415Mpa
Mgbatị:
| Ihe atụ | A333 GR.6 | |
| kwụ ọtọ | Transverse | |
| Uru kacha nta nke okirikiri ọkọlọtọihe nlere anya ma ọ bụ obere ihe nlere nwere ogologo akara nke 4D | 22 | 12 |
| Nlere anya akụkụ anọ nwere ọkpụrụkpụ mgbidi nke 5/16 in. (7.94 mm) na karịa, na ụdị obere nha niile nwalere naakụkụ obe zuru oke na 2 in. (50mm)akara | 30 | 16.5 |
| Nlere anya akụkụ anọ ruo 5/16 inch (7.94 mm) ọkpụrụkpụ mgbidi na 2 in. (50 mm) anya akara (ụdị obosara 1/2 in., 12.7 mm) | A | A |
Kwe ka mbelata 1.5% na elongation longitudinal na 1.0% na-ebelata transverse elongation maka 1 / 32 in. (0.79 mm) nke mgbidi mgbidi ruo 5 / 16 in. (7.94 mm) site na ụkpụrụ elongation edepụtara n'elu.
Nnwale mmetụta
Okpomọkụ ule: -45°C
Mgbe ejiri obere ihe nledo mmetụta Charpy na obosara ihe nleba anya erughị 80% nke ọkpụrụkpụ nke ihe ahụ, a ga-eji obere mmetụta nnwale dị ka agbakọọ na Tebụl 6 nke nkọwa ASTM A333.
| Nlereanya, mm | Nkezi kacha nta nke nlele atọ | Uru kacha nta nke one of sample ato |
| 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 |
Ọkpụkpụ ígwè kwesịrị ịbụ hydrostatically ma ọ bụ na-adịghị emebi emebi (eddy current ma ọ bụ ultrasonic) na alaka-site-ngalaba ndabere.
Nkwenye nke dayameta mpụta nke ọkpọkọ ígwè:
| Dayameta dị n'èzí, mm | mma ndidi,mm | ndidi na-adịghị mma, 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 |
Nkwado ọkpụrụkpụ mgbidi nke ọkpọkọ ígwè:
Ebe ọ bụla agaghị abụ ihe na-erughị 12.5% nke ọkpụrụkpụ mgbidi ọnụ.Ọ bụrụ na a na-enye iwu opekata mpe mgbidi, ọ nweghị ebe ga-adị ala karịa ọkpụrụkpụ mgbidi achọrọ.
Oge nzipu: Feb-22-2024