E hoʻokaʻawale ma waena o nā ʻano hana kila kila 420 420J1 a me 420J2:
ʻO ka ʻokoʻa nui ma waena o ke kila kila 420J1 a me 420J2
Loaʻa iā 420J1 kekahi ʻano o ke kūpaʻa ʻana i ka ʻaʻahu a me ke kūpaʻa ʻana i ka pala, paʻakikī kiʻekiʻe, a ʻo kona kumukūʻai haʻahaʻa ia o nā pōpō kila kila. He kūpono ia no ke kaiapuni hana e pono ai ke kila kila maʻamau.
ʻO ke kāʻei kila kila 420J2 kahi hōʻailona kila kila i hana ʻia e like me nā kūlana ASTM ʻAmelika; ke kūlana Kepanī SUS420J2, ke kūlana aupuni hou 30Cr13, ke kūlana aupuni kahiko 3Cr13, ke code kikohoʻe S42030, ke kūlana ʻEulopa 1.4028.
420J1 kila kila: Ma hope o ke kinai ʻana, kiʻekiʻe ka paʻakikī, a maikaʻi ke kūpaʻa i ka pala (magnetic). Ma hope o ke kinai ʻana, ʻoi aku ka paʻakikī o ke kila kila 420J2 ma mua o ke kila 420J1 (magnetic).
Ma keʻano laulā, ʻo ka mahana hoʻopau ʻana o 420J1 he 980 ~ 1050 ℃. ʻOi aku ka haʻahaʻa o ka paʻakikī o ka hoʻopau ʻana i ka ʻaila hoʻomehana 980 ℃ ma mua o ka hoʻopau ʻana i ka ʻaila hoʻomehana 1050 ℃. ʻO ka paʻakikī ma hope o ka hoʻopau ʻana i ka ʻaila 980 ℃ ʻo HRC45-50, a ʻoi aku ka kiʻekiʻe o ka paʻakikī ma hope o ka hoʻopau ʻana i ka ʻaila 1050 ℃. Eia nō naʻe, ʻo ka microstructure i loaʻa ma hope o ka hoʻopau ʻana ma 1050 ℃ he ʻoʻoleʻa a palupalu. Manaʻo ʻia e hoʻohana i ka hoʻomehana a me ka hoʻopau ʻana i ka 1000 ℃ e loaʻa ai ka ʻano a me ka paʻakikī maikaʻi.
Nā Papa Hana like o nā Pepa a me nā Papa Kila Kiʻekiʻe 420 / 420J1 / 420J2:
| KŪMAU | JIS | WERKSTOFF NUMERO. | BS | ʻAFNOR | SIS | UNS | ʻAISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Nā Pepa, Nā Papa Hoʻohui Kemika (kila saky):
| Papa | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 ka palena kiʻekiʻe | 1.0 kiʻekiʻe loa | 1.0 kiʻekiʻe loa | 0.040 kiʻekiʻe loa | 0.030 kiʻekiʻe | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 kiʻekiʻe loa | 1.0 kiʻekiʻe loa | 0.040 kiʻekiʻe loa | 0.030 kiʻekiʻe | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 kiʻekiʻe loa | 1.0 kiʻekiʻe loa | 0.040 kiʻekiʻe loa | 0.030 kiʻekiʻe | 12.0-14.0 | - | - |
Nā Pepa SS 420 420J1 420J2, Nā Papa Nā waiwai mechanical (kila saky):
| Papa | Ka ikaika tensile Max | Ka Ikaika Hua (0.2% Offset) Max | Elongation (i loko o 2 ʻīniha) |
| 420 | MPa – 650 | MPa – 450 | 10% |
| 420J1 | MPa – 640 | MPa – 440 | 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
ʻO ka paʻakikī o ke kila 420 series ma hope o ka mālama wela ʻana ma kahi o HRC52 ~ 55, a ʻo ka hana o nā ʻano like ʻole e like me ke kūʻē ʻana i ka pōʻino ʻaʻole i ʻoi loa ka maikaʻi. No ka mea, ʻoi aku ka maʻalahi o ka ʻoki a me ka poli ʻana, kūpono ia no ka hana ʻana i nā pahi. Ua kapa ʻia hoʻi ke kila kila 420 he kila martensitic "ʻokiʻoki". Loaʻa i ke kila 420 series ke kūʻē maikaʻi loa i ka popo ma muli o kona haʻahaʻa o ke kalapona (ʻike kalapona: 0.16 ~ 0.25), no laila he kila kūpono ia no ka hana ʻana i nā mea hana luʻu.
Ka manawa hoʻouna: Iulai-07-2020