1. Ngā āhuatanga rauemi me ngā whakaritenga paerewa
Ko te 34CrMo4 he maitai hanganga koranu chromium-molybdenum, e whakamahia ana i te nuinga o te wā hei hanga i ngā rango hau pēhanga teitei, ngā rango me ētahi atu wāhanga he tino kaha ngā whakaritenga mahi. Mai i te tirohanga a ngā whakatakotoranga paerewa, ko tētahi o ngā rauemi maitai koranu kua tohua mārama i roto i te paerewa Pākehā EN 10083-3, ā, e tutuki ana hoki i ngā whakaritenga e tika ana o te paerewa Haina GB 18248, e tino whakarato ana i te taurangi pono mō tōna kounga me te mahi. He kaha teitei, he ātete wera pai rawa atu, he ātete ngenge hoki. He rerekē ngā paerewa mō te whakatinanatanga o ngā paipa maitai kore hononga 34CrMo4 mō ngā rango hau, e kapi ana i ngā paerewa motu me te ao maha. Kei roto i ēnei ko
Paerewa Hainamana: GB/T 18248-2021 (mō ngā ngongo rango hau anake)
Paerewa Pakeha: EN 10083-3/EN 10297-1
Paerewa ā-ao: ISO 11120
Paerewa Amerika: ASTM A372/A372M-3
Paerewa Hapanihi: JIS G 3429
2. Te whakahaere i te hanganga matū (%)

Huānga	C	Si	Mn	P≤	S≤	Cr	Mo	atu
Ihirangi	0.30-0.37%	≤0.40%	0.60-0.90%	0.020%	0.020%	0.90-1.20%	0.15-0.30%	Ni≤0.30% Cu≤0.20%

Kia mōhio: Ko te katoa o te whākōkī me te whanariki ≤ 0.030%

3.He mahi miihini tino pai

I muri i te whakamahana me te whakamātao (te tinei + te whakamātao), ko te kaha kume o te paipa maitai tui 34CrMo4 he ≥980MPa, ko te kaha whakaputa he ≥835MPa, ā, ko te roa he ≥12%. I te pāmahana iti o te -50°, ka taea tonu te kaha pānga ki te ≥27J.

4. Ngā kaupapa matua o te tukanga whakaputa
1. Tukanga hanga:
Mā te whakamahi i te tukanga tuhi korekore o te hurihuri wera/makariri → te kimi hapa ultrasonic (UT) → te tinei me te whakamahana (tinei + whakamahana) → te whakamātautau waipēhi → te tirotiro hua kua oti
2. Tūnga tuku:
Ko te tikanga ka tukuna i roto i te āhua hurihuri, i te āhua matao rānei, me tukatuka te wera whakamutunga i muri i te tukatuka e te kaiwhakamahi whakamutunga.
5. Ngā reta i waenga i ngā tohu o te kāinga
Kei te mau tonu te ingoa o 34CrMo4 i roto i ngā paerewa Hainamana, ā, he rite tonu tōna mahi ki:
GB/T 3077: 34CrMo
Ngā momo ōrite: 42CrMo (me whakarerekē te hanganga)
6. Ngā wāhi tono noa

Ahumahi	Te tono motuhake	Ngā whakaritenga mahi
Te rokiroki me te kawe pūngao	Ngā rango CNG/LPG, ngā rango rokiroki hauwai	Peia pēhanga teitei (20-35MPa)
Ngā taputapu hauora	Ngā puoto hāora hauora	Teitei te parakore (iti te ihirangi S/P)
Ngā taputapu tinei ahi	Ngā rango manawa, ngā rango tinei ahi	Te pakari o te pānga pāmahana iti
Te kawe waka	Ngā puoto pūnaha parai waka arumoni	Ngenge ātete-wiri
Ngā hōia me ngā mahi rererangi	Ngā tāke whakarewa	Te tukatuka witi tino pai

7. Ngā whakatakotoranga hua tuku iho (mm)

Awhe whānui o waho: Φ108-356
Te whānuitanga matotoru o te pakitara: 4-16.8
Ngā rahi noa:
Φ139.7×4.5, Φ203×5.4, Φ279×6.8, Φ355.6×7.5, etc.
(E tautokona ana te whakaritenga rahi kāore i te paerewa)
8. Ngā wāhi tono matua o te 34CrMo4
Ko te 34CrMo4, he rauemi koranu maitai chromium-molybdenum, e whakamahia nuitia ana mō te hanga rauemi paipa maitai kore hononga mō ngā rango hau pēhanga teitei/rango maitai me ngā ipu pēhanga teitei. I roto i ngā mahi whaihua, e whakamahia nuitia ana i roto i te hanga rango CNG, tae atu ki te hanga rango hau māori kōpeke mō ngā waka me ētahi atu rango ipu pēhanga teitei, e whakarato ana i te tautoko rauemi pono mō ēnei mara.