Yahlula phakathi kweempawu zokusebenza kwentsimbi engagqwaliyo ye-420 420J1 kunye ne-420J2:
Umahluko omkhulu phakathi kwentsimbi engagqwaliyo engu-420J1 kunye ne-420J2
I-420J1 inomlinganiselo othile wokumelana nokuguguleka kunye nokugqwala, ubulukhuni obuphezulu, kwaye ixabiso layo liphantsi kuneebhola zentsimbi engagqwali. Ifanelekile kwindawo yokusebenza efuna intsimbi engagqwali eqhelekileyo.
Ibhanti yentsimbi engagqwaliyo ye-420J2 luphawu lwentsimbi engagqwaliyo eyenziwe ngokwemigangatho ye-ASTM yaseMelika; umgangatho waseJapan i-SUS420J2, umgangatho omtsha wesizwe i-30Cr13, umgangatho omdala wesizwe i-3Cr13, ikhowudi yedijithali i-S42030, umgangatho waseYurophu i-1.4028.
Intsimbi engagqwaliyo engu-420J1: Emva kokucima, ubulukhuni buphezulu, kwaye ukumelana nokugqwala kulungile (imagnethi). Emva kokucima, intsimbi engagqwali engu-420J2 inzima kunentsimbi engu-420J1 (imagnethi).
Ngokubanzi, iqondo lobushushu lokucima le-420J1 liyi-980~1050℃. Ubunzima bokucima ioyile yokufudumeza ye-980℃ buphantsi kakhulu kunokucima ioyile yokufudumeza ye-1050℃. Ubunzima emva kokucima ioyile ye-980℃ yi-HRC45-50, kwaye ubunzima emva kokucima ioyile ye-1050℃ buphezulu nge-2HRC. Nangona kunjalo, isakhiwo esincinci esifunyenwe emva kokucima kwi-1050℃ sirhabaxa kwaye sibuthathaka. Kucetyiswa ukusebenzisa ukufudumeza nokucima kwe-1000℃ ukuze ufumane isakhiwo kunye nobunzima obungcono.
Intsimbi Engagqwaliyo 420 / 420J1 / 420J2 Amaphepha kunye neePlati Amanqanaba Alinganayo:
| UMGANGATHO | I-JIS | I-WERKSTOFF NR. | BS | I-AFNOR | I-SIS | I-UNS | I-AISI |
| I-SS 420 | I-SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| I-SS 420J1 | I-SUS 420J1 | 1.4021 | 420S29 | I-Z20C13 | 2303 | S42010 | 420L |
| I-SS 420J2 | I-SUS 420J2 | 1.4028 | 420S37 | I-Z20C13 | 2304 | S42010 | 420M |
I-SS420/420J1/ Amaphepha e-420J2, Iipleyiti Ulwakhiwo lweekhemikhali (intsimbi eyomileyo):
| Ibanga | C | Mn | Si | P | S | Cr | Ni | Mo |
| I-SUS 420 | Ubuninzi obuyi-0.15 | Ubuninzi be-1.0 | Ubuninzi be-1.0 | Ubuninzi be-0.040 | Ubuninzi be-0.030 | 12.0-14.0 | - | - |
| I-SUS 420J1 | 0.16-0.25 | Ubuninzi be-1.0 | Ubuninzi be-1.0 | Ubuninzi be-0.040 | Ubuninzi be-0.030 | 12.0-14.0 | - | - |
| I-SUS 420J2 | 0.26-0.40 | Ubuninzi be-1.0 | Ubuninzi be-1.0 | Ubuninzi be-0.040 | Ubuninzi be-0.030 | 12.0-14.0 | - | - |
Ii-SS 420 420J1 420J2 Amaphepha, Iipleyiti Iimpawu zoomatshini (intsimbi eyomileyo):
| Ibanga | Amandla okuThamba aphezulu | Amandla okuKhula (0.2%I-Offset) Ubuninzi | Ukwandiswa (kwiisentimitha ezi-2) |
| 420 | I-MPa – 650 | I-MPa – 450 | 10% |
| 420J1 | I-MPa – 640 | I-MPa – 440 | 20% |
| 420J2 | I-MPa – 740 | I-MPa – 540 | 12% |
Ubunzima bentsimbi yochungechunge lwe-420 emva konyango lobushushu bumalunga ne-HRC52 ~ 55, kwaye ukusebenza kweempawu ezahlukeneyo ezifana nokumelana nomonakalo akubonakali kakhulu. Ngenxa yokuba kulula ukuyisika nokuyipolisha, ifanelekile ukuvelisa iimela. Intsimbi engatyiwayo ye-420 ikwabizwa ngokuba yintsimbi ye-martensitic "yokusika". Intsimbi yochungechunge lwe-420 inokumelana nokugqwala okugqwesileyo ngenxa yomxholo wayo ophantsi wekhabhoni (umxholo wekhabhoni: 0.16 ~ 0.25), ngoko ke yintsimbi efanelekileyo yokuvelisa izixhobo zokuntywila.
Ixesha lokuthumela: Julayi-07-2020