AISI 4140 1.7225 42CrMo4 SCM440 B7 Paʻa hao
ʻO ka wehewehe pōkole:
ʻO ke kila kila AISI SAE 4140 he chromium molybdenum alloy steel kikoʻī i hoʻohana nui ʻia i ke kumu nui o ke kila tensile kiʻekiʻe no nā ʻāpana, e like me nā axles, shafts, bolts, gears a me nā noi ʻē aʻe.
ʻO nā pahu hao kalapona:
ʻO AISI 4140, 1.7225 (42CrMo4), SCM440, a me B7 Steel Bar he mau inoa like ʻole no ke ʻano like o ke kila kila. Ua ʻike ʻia lākou no ka ikaika kiʻekiʻe a me ka paʻakikī, hoʻohana maʻamau i nā noi e like me nā gears a me nā bolts. ʻO AISI 4140 ka inoa ʻAmelika, ʻo 1.7225 ka maʻamau ʻEulopa EN, ʻo SCM440 ka inoa ʻo Japanese JIS, a ʻo B7 e pili ana i kahi hālāwai papa ASTM A193 kikoʻī. Hōʻike kēia mau inoa i ke kila kila chromium-molybdenum me nā waiwai like, a pili paha ke koho i nā kūlana kūloko a ʻoihana paha.
Nā kikoʻī o 4140 1.7225 42CrMo4 SCM440 B7:
| Papa | 4140 1.7225 42CrMo4 SCM440 B7 |
| Kūlana | ASTM A29, ASTM A193 |
| Ili | ʻEleʻele, Mīkini ʻOka, Huli |
| Kaulana anawaena | 1.0 ~ 300.0mm |
| Ka lōʻihi | 1 a 6 mika |
| Kaʻina hana | Huki Anuanu & Ho'oma'ama'a Huki Anuanu, 'Āina 'O'ole'e & Ho'oma'ama'a |
| Mahele Raw | POSCO, Baosteel, TISCO, Saky Steel, Outokumpu |
Nā hiʻohiʻona a me nā pono:
•Ka ikaika kiʻekiʻe: Ke hōʻike nei kēia mau pahu kila i ka ikaika tensile kiʻekiʻe, e kūpono iā lākou no nā noi kahi koʻikoʻi ka ikaika a me ka lōʻihi.
•Toughness: Hāʻawi lākou i ka paʻakikī maikaʻi a me ka pale ʻana i ka hopena, hiki iā lākou ke kū i nā ukana kaumaha a me nā koʻikoʻi ikaika.
•Versatility: ʻO AISI 4140, 1.7225, 42CrMo4, SCM440, a me B7 he mau mea hoʻohui like ʻole i kūpono no ka nui o nā noi, e komo pū ana me nā mīkini, nā bolts, shafts, a me nā mea hana.
•Kākoʻo Wear: ʻO nā mea hoʻohuihui, e like me ka chromium a me ka molybdenum, e kōkua i ka hoʻomaikaʻi ʻana i ka pale ʻana i ka lole, e hana i kēia mau pahu kila i kūpono no nā noi e pili ana i nā kūlana abrasive.
•Machinability: Loaʻa i kēia mau kila ka machinability maikaʻi ke mālama pono ʻia ka wela, hiki i nā kaʻina hana machining maikaʻi i ka wā hana.
•Weldability: Hiki iā lākou ke welded, ʻoiai e koi ʻia ka hoʻomaʻamaʻa ʻana i ka wela ma hope o ka weld e mālama i nā waiwai i makemake ʻia a pale i nā pilikia e like me ka brittleness.
Huina Kemika:
| Papa | C | Mn | P | S | Si | Cr | Mo |
| 4140 | 0.38-0.43 | 0.75- 1.0 | 0.035 | 0.040 | 0.15-0.35 | 0.8-1.10 | 0.15-0.25 |
| 42CrMo4/ 1.7225 | 0.38-0.45 | 0.6-0.90 | 0.035 | 0.035 | 0.40 | 0.9-1.20 | 0.15-0.30 |
| SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.030 | 0.15-0.35 | 0.9-1.20 | 0.15-0.30 |
| B7 | 0.37-0.49 | 0.65-1.10 | 0.035 | 0.040 | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
Nā waiwai mīkini:
| Papa | ʻO ka ikaika uʻi [MPa] | ʻO ka ikaika [MPa] | Elongation % |
| 4140 | 655 | 415 | 25.7 |
| 1.7225/42CrMo4 | 1080 | 930 | 12 |
| SCM440 | 1080 | 930 | 17 |
| B7 | 125 | 105 | 16 |
FAQ alakaʻi:
No ke aha e koho ai iā mākou?
•Hiki iā ʻoe ke loaʻa ka mea kūpono e like me kāu koi ma ka liʻiliʻi loa o ke kumu kūʻai.
•Hāʻawi pū mākou i nā Reworks, FOB, CFR, CIF, a me nā kumukūʻai hoʻopuka puka i ka puka. Manaʻo mākou iā ʻoe e hana i ka hana no ka hoʻouna ʻana e ʻoi aku ka waiwai.
•Hiki ke hōʻoia ʻia nā mea a mākou e hāʻawi ai, mai ka palapala hōʻike maka a hiki i ka ʻōlelo kikoʻī hope. (E hōʻike ʻia nā hōʻike ma ke koi)
•Ke hōʻoiaʻiʻo nei mākou e hāʻawi i kahi pane i loko o 24 mau hola (maʻamau i ka hola hoʻokahi)
•Hāʻawi i ka hōʻike SGS TUV.
•Hoʻolaʻa piha mākou i kā mākou mea kūʻai. Inā ʻaʻole hiki ke hoʻokō i kāu mau koi ma hope o ka nānā ʻana i nā koho āpau, ʻaʻole mākou e alakaʻi hewa iā ʻoe ma ka hana ʻana i nā ʻōlelo hoʻohiki wahaheʻe e hoʻokumu ai i nā pilina mea kūʻai aku.
•Hāʻawi i ka lawelawe hoʻokahi.
4140 vs 42CRMO4 - He aha ka ʻokoʻa?
ʻO AISI 4140 a me 42CrMo4 ke ʻano like o ke kila, me AISI 4140 ka inoa ʻAmelika a ʻo 42CrMo4 ka inoa ʻEulopa. Kaʻana like lākou i nā haku mele like ʻole, ka ikaika kiʻekiʻe, a me ka paʻakikī, e kūpono ana iā lākou no nā noi e like me nā gears a me nā bolts. ʻOiai nā inoa like ʻole a me nā kūlana kūloko, ua manaʻo pinepine ʻia lākou e loli ma muli o nā waiwai like.
He aha ke kila 42CrMo4?
ʻO 42CrMo4 he kila kila chromium-molybdenum i kohoʻia e ka European standard EN 10083. Uaʻikeʻia no kona ikaika kiʻekiʻe, paʻakikī, a me ka paʻakikī maikaʻi. Me ka ʻona kalapona o 0.38% a 0.45%, hoʻohana maʻamau ia i nā noi e koi ana i nā ʻāpana ikaika, e like me nā gears, crankshafts, a me nā lāʻau hoʻohui i nā ʻoihana e like me ka automotive a me ka aerospace. Hoʻopili maikaʻi ke kila i ka mālama ʻana i ka wela, e hāʻawi ana i ka hiki ke hoʻoponopono i nā waiwai mechanical, a ua manaʻo ʻia ʻo ia he honua e like me nā inoa ʻē aʻe e like me AISI 4140 a me SCM440.
He aha ke kila B7?
ʻO ka papa B7 kahi kikoʻī i loko o ka maʻamau ASTM A193, e uhi ana i nā mea bolting ikaika kiʻekiʻe no ka hoʻohana ʻana i ka lawelawe wela a i ʻole ke kaomi kiʻekiʻe. ʻO ka ASTM A193 kahi maʻamau i hoʻomohala ʻia e ASTM International (ʻike mua ʻia ʻo ka American Society for Testing and Materials) a hoʻohana nui ʻia i ka ʻaila a me ke kinoea, petrochemical, a me nā ʻoihana hana mana. ʻo ia ka mea i kinai ʻia a hoʻoluliluli ʻia (heat-treated) e hoʻokō ai i nā waiwai mechanical i makemake ʻia. Ke kuhikuhi ʻia, pono e hoʻokō nā mea i nā koi i hōʻike ʻia ma nā kūlana ASTM A193 a me A194 e hōʻoia i ka ikaika kūpono, ductility, a me nā mea hana ʻē aʻe.
ʻO kā mākou mau mea kūʻai
Manaʻo manaʻo mai kā mākou mea kūʻai mai
ʻO ka AISI 4140, 1.7225, 42CrMo4, SCM440, a me B7 nā pahu kila e pane maikaʻi i ka mālama wela, e ʻae ai i ka hoʻoponopono ʻana i nā mea mechanical e like me ka paʻakikī a me ka paʻakikī. Hāʻawi lākou i ka paʻakikī maikaʻi a me ke kū'ē i ka hopena, hiki iā lākou ke kū i nā kaumaha kaumaha a me nā koʻikoʻi koʻikoʻi. a me ka molybdenum, e kōkua i ka hoʻomaikaʻi ʻana i ke kūpaʻa ʻana, e hana ana i kēia mau pahu kila i kūpono no nā noi i hoʻopili ʻia i nā kūlana abrasive.
Hoʻopili:
1. He mea koʻikoʻi ka hoʻopaʻa ʻana ma ka hihia o ka hoʻouna ʻana i ka honua kahi e hele ai ka lawe ʻana ma nā ala like ʻole e hiki ai i ka hopena hope loa, no laila ke kau nei mākou i ka hopohopo kūikawā e pili ana i ka ʻeke.
2. Hoʻopili ʻo Saky Steel i kā mākou waiwai ma nā ʻano he nui e pili ana i nā huahana. Hoʻopili mākou i kā mākou huahana ma nā ʻano he nui, e like me,
