Ukwahlula phakathi kwe-420 420J1 kunye ne-420J2 iimpawu zokusebenza zentsimbi:
Umahluko omkhulu phakathi kwensimbi engenasici 420J1 kunye ne-420J2
I-420J1 inomlinganiselo othile wokumelana nokugqoka kunye nokumelana nokugqwala, ubunzima obuphezulu, kwaye ixabiso layo liphantsi kweebhola zensimbi ezingenasici. Ifanelekile kwindawo yokusebenza efuna intsimbi eqhelekileyo engenasici.
I-420J2 ibhanti yensimbi engenasici yi-brand yensimbi engenasici eyenziwe ngokuhambelana nemigangatho ye-ASTM yaseMelika; Umgangatho waseJapan we-SUS420J2, umgangatho omtsha wesizwe we-30Cr13, umgangatho wesizwe omdala we-3Cr13, ikhowudi yedijithali S42030, umgangatho waseYurophu 1.4028.
I-420J1 insimbi engenasici: Emva kokucima, ubunzima buphezulu, kwaye ukuxhathisa kwe-corrosion kulungile (magnetic). Emva kokucima, i-420J2 insimbi engenasici inzima kunentsimbi ye-420J1 (magnetic).
Ngokubanzi, ubushushu bokucima i-420J1 yi-980 ~ 1050℃. Ukuqina kwe-980 ℃ yokucima i-oyile yokufudumeza kusezantsi kakhulu kune-1050 ℃ yokucima i-oyile yokufudumeza. Ukuqina emva kwe-980 ℃ yokucima i-oyile yi-HRC45-50, kwaye ukuqina emva kwe-1050 ℃ yokucima ioli yi-2HRC ephezulu. Nangona kunjalo, i-microstructure efunyenwe emva kokucima kwi-1050 ℃ i-coarse kwaye i-brittle. Kuyacetyiswa ukuba usebenzise i-1000℃ yokufudumeza kunye nokucima ukufumana ulwakhiwo olungcono kunye nobunzima.
iStainless Steel 420 / 420J1 / 420J2 Amaxwebhu kunye neePlati zamaBanga aLingeneyo:
| UMGANGATHO | I-JIS | WERKSTOFF NR. | BS | UKUBALULEKILE | SIS | UNS | AISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | I-SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Amaxwebhu, Iipleyiti Ukubunjwa kwemichiza (saky steel):
| IBanga | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 ubuninzi | 1.0 ubuninzi | 1.0 ubuninzi | 0.040 ubuninzi | 0.030 ubuninzi | 12.0-14.0 | - | - |
| I-SUS 420J1 | 0.16-0.25 | 1.0 ubuninzi | 1.0 ubuninzi | 0.040 ubuninzi | 0.030 ubuninzi | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 ubuninzi | 1.0 ubuninzi | 0.040 ubuninzi | 0.030 ubuninzi | 12.0-14.0 | - | - |
I-SS 420 420J1 420J2 Amaxwebhu, iiPlati zeMechanical properties (intsimbi yesaky):
| IBanga | I-Tensile Amandla Max | Amandla eSivuno (0.2% Offset) Ubuninzi | Ubude (kwi-2 ngo.) |
| 420 | MPa – 650 | MPa – 450 | 10% |
| 420J1 | MPa – 640 | MPa – 440 | 20% |
| 420J2 | MPa – 740 | MPa – 540 | 12% |
Ubulukhuni bentsimbi ye-420 emva kokunyanga ubushushu bumalunga ne-HRC52 ~ 55, kwaye ukusebenza kweenkalo ezahlukeneyo ezifana nokuchasana nomonakalo akuvelele kakhulu. Ngenxa yokuba kulula ukusika kunye nokupholisha, kukulungele ukuveliswa kweemela. I-420 insimbi engenasici ikwabizwa ngokuba "yibakala lokusika" intsimbi ye-martensitic. I-420 ye-steel ye-steel inokumelana ne-rust egqwesileyo ngenxa yomxholo wekhabhoni ephantsi (i-carbon content: 0.16 ~ 0.25), ngoko ke iyintsimbi efanelekileyo yokuvelisa izixhobo zokuntywila.
Ixesha lokuposa: Jul-07-2020