Pae maitai AISI 4140 1.7225 42CrMo4 SCM440 B7
Whakaahuatanga Poto:
Ko te maitai koranu AISI SAE 4140 he whakatakotoranga maitai koranu chromium molybdenum e whakamahia whānuitia ana i roto i te maitai kume teitei mō ngā waahanga, pēnei i ngā toki, ngā pou, ngā pūtu, ngā taputapu me ētahi atu tono.
Ngā Pae Rino Waro:
He rerekē ngā tohu o te AISI 4140, 1.7225 (42CrMo4), SCM440, me te B7 Steel Bar mō te momo maitai koranu kotahi. E mōhiotia ana mō te kaha me te pakari, e whakamahia whānuitia ana i roto i ngā mahi pēnei i ngā taputapu me ngā pūtu. Ko te AISI 4140 te tohu o Amerika, ko te 1.7225 te paerewa EN o Ūropi, ko te SCM440 te tohu JIS o Hapanihi, ā, ko te B7 e pā ana ki te taumata e tutuki ana i ngā whakaritenga ASTM A193. Ko ēnei tohu e tohu ana i te maitai koranu chromium-molybdenum me ngā āhuatanga ōrite, ā, ko te kōwhiringa ka whakawhirinaki pea ki ngā paerewa ā-rohe, ā-umanga rānei.
Ngā Whakatakotoranga o te 4140 1.7225 42CrMo4 SCM440 B7:
| Tau | 4140 1.7225 42CrMo4 SCM440 B7 |
| Paerewa | ASTM A29, ASTM A193 |
| Mata | Mangu, Mīhini Taratara, Hurihuri |
| Awhe Diameter | 1.0 ~ 300.0mm |
| Roa | 1 ki te 6 Mita |
| Te tukatuka | Tātarihia Matao & Orohia Tātarihia Matao, Kore Pokapū Whenua & Orohia |
| Rauemi Mata | POSCO, Baosteel, TISCO, Saky Steel, Outokumpu |
Ngā Āhuatanga me ngā Painga:
•Kaha Teitei: He tino kaha te kume o ēnei pae rino, ā, he pai mō ngā tono e tino hira ana te kaha me te manawanui.
•Pakari: He pakari, he ātete hoki ki ngā pānga, ā, ka taea e rātou te tu atu i ngā kawenga taumaha me ngā ahotea hihiri.
•Ngā Mahi Whānui: He maha ngā whakamahinga o ngā koranu AISI 4140, 1.7225, 42CrMo4, SCM440, me te B7, e tika ana mō ngā momo mahi maha, tae atu ki ngā taputapu, ngā pūtu, ngā toki, me ngā wāhanga hanganga.
•Ātete Paku: Ko ngā huānga koranu, pērā i te chromium me te molybdenum, ka whai wāhi ki te whakapai ake i te ātete pakū, ā, ka pai ai ēnei pae maitai mō ngā mahi e pāngia ana e ngā āhuatanga whakakoi.
•Āheitanga ki te Mīhini: He pai te āheinga o ēnei maitai ki te mīhini ina tika te whakamahana, ā, ka taea ai te whakamahi i ngā tukanga mīhini whai hua i te wā e hangaia ana.
•Āheinga Whakarewa: Ka taea te whakarewa, ahakoa me whakamahana i mua me muri i te whakarewa hei pupuri i ngā āhuatanga e hiahiatia ana, hei karo hoki i ngā take pēnei i te pakarukaru.
Te Hanganga Matū:
| Tau | 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 |
Ngā āhuatanga miihini:
| Tau | Kaha Kume [MPa] | Te Kaha o Yiled [MPa] | % Toronga |
| 4140 | 655 | 415 | 25.7 |
| 1.7225/42CrMo4 | 1080 | 930 | 12 |
| SCM440 | 1080 | 930 | 17 |
| B7 | 125 | 105 | 16 |
Aratohu Pātai Auau:
He aha i whiriwhiri ai i a mātou?
•Ka taea e koe te tiki i te rauemi tino tika e rite ana ki ō hiahia i te utu iti rawa.
•Kei a mātou anō ngā utu tuku Reworks, FOB, CFR, CIF, me te tatau ki te tatau. Ka tūtohu mātou kia mahi koe i tētahi kirimana utu pai, ā, he tino ohanga tēnei.
•Ka taea te manatoko i ngā rauemi e tukuna ana e mātou, mai i te tiwhikete whakamātautau rauemi mata ki te tauākī whakamutunga mō ngā āhuatanga. (Ka whakaatuhia ngā pūrongo mēnā e hiahiatia ana)
•Ka oati mātou ki te whakautu i roto i ngā haora 24 (i taua haora anō)
•Whakaratohia te pūrongo SGS TUV.
•E tino whakapau kaha ana mātou ki te tautoko i ā mātou kiritaki. Mēnā kāore e taea te whakatutuki i ō hiahia i muri i te tirotiro i ngā kōwhiringa katoa, e kore mātou e tinihanga i a koe mā te whakaputa kupu whakaari teka, ka waihanga hononga pai ki ngā kiritaki.
•Whakarato ratonga kotahi-mutu.
4140 vs 42CRMO4 – He aha te rerekētanga?
He rite tonu te momo maitai o te AISI 4140 me te 42CrMo4, ko te AISI 4140 te tohu o Amerika, ko te 42CrMo4 te tohu o Ūropi. He rite tonu ngā hanganga matū, te kaha teitei, me te pakari, ā, he pai mō ngā mahi pēnei i ngā taputapu me ngā pūtu. Ahakoa ngā tohu rerekē me ngā paerewa ā-rohe, he maha ngā wā ka kiia he mea whakawhiti i waenga i a rātou nā runga i ngā āhuatanga ōrite.
He aha te maitai 42CrMo4?
Ko te 42CrMo4 he maitai koranu chromium-molybdenum kua tohua e te paerewa Pākehā EN 10083. E mōhiotia ana mō tōna kaha teitei, tōna pakari, me tōna kaha whakapakeke pai. Me te ihirangi waro o te 0.38% ki te 0.45%, he mea whakamahi noa i roto i ngā tono e hiahia ana i ngā wāhanga pakari, pērā i ngā taputapu, ngā porowhita, me ngā tokotoko hono i roto i ngā ahumahi pēnei i te motuka me te rererangi. He pai te urupare a te maitai ki te maimoatanga wera, e whakarato ana i te kaha ki te whakarerekē i ngā āhuatanga miihini, ā, e kiia ana he rite ki te ao katoa ki ētahi atu tohu pēnei i te AISI 4140 me te SCM440.
He aha te maitai kounga B7?
Ko te karaehe B7 he whakatakotoranga i roto i te paerewa ASTM A193, e kapi ana i ngā rauemi whakapuru kaha-teitei hei whakamahi i roto i te ratonga pāmahana-tiketike, pēhanga-tiketike rānei. Ko te ASTM A193 he paerewa i whakawhanakehia e ASTM International (i mua ko te American Society for Testing and Materials) ā, e whakamahia whānuitia ana i roto i ngā ahumahi hinu me te hau, matū, me te whakaputa hiko. Ko te maitai karaehe B7 he maitai chromium-molybdenum iti-koranu ka tineia, ka whakamahanatia (ka whakamahanahia) kia tutuki ai ngā āhuatanga miihini e hiahiatia ana. He mea nui kia mōhio ko te maitai karaehe B7 he maha ngā wā ka whakamahia ngātahitia me ngā nati karaehe 2H hei whakarite i te hototahitanga me te mahi i roto i ngā tono uaua. Ina tohua, me tutuki i ngā rauemi ngā whakaritenga kua whakarārangihia i roto i ngā paerewa ASTM A193 me A194 hei whakarite i te kaha tika, te ngāwari, me ētahi atu āhuatanga miihini.
Ā mātou Kiritaki
Ngā Urupare mai i ā Mātou Kiritaki
He pai te urupare a ngā pae maitai AISI 4140, 1.7225, 42CrMo4, SCM440, me te B7 ki te maimoatanga wera, ā, ka taea te whakarerekē i ngā āhuatanga miihini pēnei i te pakeke me te pakari. He kaha te kume o ēnei pae maitai, ā, he pai mō ngā tono he mea nui te kaha. He pai te pakari me te ātete pānga, ā, ka taea e rātou te tu atu i ngā kawenga taumaha me ngā ahotea hihiri. He maha ngā whakamahinga o ngā pae maitai, ā, ka kitea ngā tono i roto i ngā ahumahi maha, tae atu ki te motuka, te rererangi, te hanga, me te hanga. Ko ngā huānga whakarewa, pēnei i te chromium me te molybdenum, ka whai wāhi ki te whakapai ake i te ātete kakahu, ā, ka pai ēnei pae maitai mō ngā tono i raro i ngā āhuatanga whakakoi.
Te tākai:
1. He mea nui te tākai, inā koa mō ngā tukunga o tāwāhi e haere ana ngā uta mā roto i ngā huarahi rerekē kia tae atu ki te ūnga whakamutunga, nō reira ka tino aro nui mātou ki te tākai.
2. He maha ngā huarahi e tākai ai a Saky Steel i ā mātou taonga, e ai ki ngā hua. He maha ngā huarahi e tākai ai mātou i ā mātou hua, pērā i,
