1. Nā waiwai mea a me nā kikoʻī maʻamau
ʻO 34CrMo4 kahi kila kila chromium-molybdenum alloy, kahi i hoʻohana pinepine ʻia e hana i nā cylinders kinoea kiʻekiʻe, nā cylinders a me nā ʻāpana ʻē aʻe me nā koi hana koʻikoʻi. Mai ka manaʻo o nā kikoʻī maʻamau, ʻo ia kekahi o nā mea kila alloy i kuhikuhi maopopo ʻia ma ke kūlana ʻEulopa EN 10083-3, a hoʻokō pū i nā koi kūpono o ke kūlana Kina GB 18248, kahi e hāʻawi nei i kahi hōʻoia hilinaʻi no kona maikaʻi a me ka hana. Loaʻa iā ia ka ikaika kiʻekiʻe, ke kūpaʻa wela maikaʻi loa a me ke kūpaʻa luhi. ʻOkoʻa nā kūlana no ka hoʻokō ʻana o nā paipu kila seamless 34CrMo4 no nā cylinders kinoea, e uhi ana i nā kūlana aupuni a me nā kūlana honua. ʻO kēia mau mea
Kūlana Kina: GB/T 18248-2021 (no nā paipu pahu kinoea wale nō)
Kūlana ʻEulopa: EN 10083-3/EN 10297-1
Kūlana honua: ISO 11120
Kūlana ʻAmelika: ASTM A372/A372M-3
Kūlana Kepanī: JIS G 3429
2. Ka hoʻomalu ʻana i ka hoʻohuihui kemika (%)

ʻElemene	C	Si	Mn	P≤	S≤	Cr	Mo	ʻē aʻe
ʻIkepili	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%

Nānā: Huina phosphorus a me sulfur ≤ 0.030%

3.Hana mīkini maikaʻi loa

Ma hope o ka mālama wela ʻana a me ka hoʻomaʻamaʻa ʻana (quenching + tempering), ʻo ka paipu kila seamless 34CrMo4 he ikaika tensile o ≥980MPa, he ikaika yield o ≥835MPa, a he elongation o ≥12%. I ka mahana haʻahaʻa o -50°, hiki nō i ka ikehu hopena ke ≥27J.

4. Nā kiko koʻikoʻi o ke kaʻina hana
1. Ke kaʻina hana:
Ke hoʻohana nei i ke kaʻina hana huki wela/anuanu → ʻike ʻana i nā kīnā ultrasonic (UT) → quenching a me ka tempering (quenching + tempering) → hoʻāʻo hydraulic → nānā ʻana i ka huahana i hoʻopau ʻia
2. Kūlana hoʻouna:
Hoʻouna pinepine ʻia i ke kūlana i ʻōwili ʻia a i ʻole ke anu i huki ʻia, pono ka mālama wela hope loa ma hope o ka hana ʻana e ka mea hoʻohana hope loa
5. Ka pilina ma waena o nā papa kūloko
Mālama ʻo 34CrMo4 i ka inoa like ma nā kūlana Kina, a ua like kāna hana me:
GB/T 3077: 34CrMo
Nā māka like: 42CrMo (pono e hoʻoponopono i ka haku mele ʻana)
6. Nā wahi noi maʻamau

ʻOihana	Hoʻohana kikoʻī	Nā koi hana
Ka mālama ʻana i ka ikehu a me ka halihali ʻana	Nā pahu CNG/LPG, nā pahu mālama hydrogen	Ke kūʻai ʻana i ke kaomi kiʻekiʻe (20-35MPa)
Nā lako lapaʻau	Nā pahu oxygen lapaʻau	Maʻemaʻe kiʻekiʻe (haʻahaʻa ka ʻike S/P)
Nā lako hana kinai ahi	Nā pahu hanu, nā pahu kinai ahi	Paʻakikī hopena wela haʻahaʻa
Ka halihali	Nā paukūʻoloka ʻōnaehana paleki kaʻa kalepa	Luhi kū'ē i ka haʻalulu
Pūʻali koa a me ka mokulele	Nā pahu hoʻoheheʻe	Ka hana ʻana i ka palaoa maikaʻi loa

7. Nā kikoʻī huahana kuʻuna (mm)

Ka laulā o ke anawaena o waho: Φ108-356
Ka laulā mānoanoa o ka paia: 4-16.8
Nā nui maʻamau:
Φ139.7×4.5, Φ203×5.4, Φ279×6.8, Φ355.6×7.5, etc.
(Kākoʻo ʻia ka hoʻopilikino ʻana i ka nui maʻamau ʻole)
8. Nā wahi noi nui o 34CrMo4
ʻO 34CrMo4, ma ke ʻano he mea hao kila chromium-molybdenum, hoʻohana nui ʻia no ka hana ʻana i nā mea paipu kila seamless no nā cylinders kinoea kiʻekiʻe/cylinders kila a me nā ipu kiʻekiʻe. Ma nā noi hana, hoʻohana nui ʻia ia i ka hana ʻana o nā cylinders CNG, me ka hana ʻana i nā cylinders kinoea kūlohelohe i hoʻopaʻa ʻia no nā kaʻa a me nā cylinders ipu kiʻekiʻe ʻē aʻe, e hāʻawi ana i ke kākoʻo mea hilinaʻi no kēia mau kahua.