AISI 8620 Intsimbii-alloy nickel ephantsi, i-chromium, i-molybdenum case hardening steel, ibonelelwa ngokubanzi kwimeko eqengqelekayo enobunzima obukhulu be-HB 255. Ngokuqhelekileyo inikezelwa kwi-bar ye-8620 ejikelezayo.
Iguquguqukayo ngexesha lonyango olunzima, ngaloo ndlela ivumela ukuphuculwa kwemeko / iimpawu eziphambili. Ukuqina kwangaphambili kunye nobushushu (i-uncarburized) 8620 inokuphinda iqiniswe ngumphezulu nge-nitriding. Nangona kunjalo, ayiyi kuphendula ngokwanelisayo kwidangatye okanye ukuqina kwe-induction ngenxa yomxholo wekhabhoni ephantsi.
Intsimbi 8620 ifanele usetyenziso olufuna indibaniselwano yokuqina kunye nokumelana nokunxiba.
Sinikezela nge-AISI 8620 bar ejikelezileyo kwindawo eshushu eqengqelekayo / Q+T / imeko eqhelekileyo. Idayamitha ekhoyo ukusuka kwi-20mm ukuya kwi-300mm ukuze ithunyelwe ngokukhawuleza.
1. I-AISI 8620 Uluhlu lweeNtengo zeNsimbi
8620 Round Bar: ububanzi 8mm - 3000mm
Ipleyiti yentsimbi ye8620: ubukhulu 10mm – 1500mm x ububanzi 200mm – 3000mm
8620 Square Bar: 20mm - 500mm
Iityhubhu ezingama-8620 zikwakhona ngokuchasene nesicelo sakho esineenkcukacha.
Umphezulu wokuGqibela: Mnyama, oMatshiniweyo orhabaxa, ojikiweyo okanye ngokweemfuno ezinikiweyo.
|
Ilizwe |
i-USA | I-DIN | BS | BS |
Japhan |
|
Umgangatho |
I-ASTM A29 | DIN 1654 | EN 10084 |
BS 970 |
I-JIS G4103 |
|
Amabanga |
8620 |
1.6523/ |
1.6523/ |
805M20 |
I-SNCM220 |
3. I-ASTM 8620 Iintsimbi kunye neMicimbi yokuFaniswa kweMichiza
| Umgangatho | IBanga | C | Mnu | P | S | Si | Ni | Cr | Mo |
| I-ASTM A29 | 8620 | 0.18-0.23 | 0.7-0.9 | 0.035 | 0.040 | 0.15-0.35 | 0.4-0.7 | 0.4-0.6 | 0.15-0.25 |
| DIN 1654 | 1.6523/ 21NiCrMo2 |
0.17-0.23 | 0.65-0.95 | 0.035 | 0.035 | ≦0.40 | 0.4-0.7 | 0.4-0.7 | 0.15-0.25 |
| EN 10084 | 1.6523/ 20NiCrMo2-2 |
0.17-0.23 | 0.65-0.95 | 0.025 | 0.035 | ≦0.40 | 0.4-0.7 | 0.35-0.70 | 0.15-0.25 |
| I-JIS G4103 | I-SNCM220 | 0.17-0.23 | 0.6-0.9 | 0.030 | 0.030 | 0.15-0.35 | 0.4-0.7 | 0.4-0.65 | 0.15-0.3 |
| BS 970 | 805M20 | 0.17-0.23 | 0.6-0.95 | 0.040 | 0.050 | 0.1-0.4 | 0.35-0.75 | 0.35-0.65 | 0.15-0.25 |
4. I-AISI 8620 yeePropati zeMechanical zeNsimbi
Uxinaniso (lb / cu. in.) 0.283
Ubunzima obuthile 7.8
Ubushushu obukhethekileyo (Btu/lb/Deg F – [32-212 Deg F]) 0.1
Indawo enyibilikayo (Deg F) 2600
I-Thermal Conductivity 26
Mean Coeff Thermal Ukwandiswa 6.6
Imodyuli yeElasticity Tension 31
| Iipropati | Metric | Impiriyali |
| Tensile strength | 530 MPa | 76900 psi |
| Unikeze Amandla | 385 MPa | 55800 psi |
| Imodyuli ye-elastic | 190-210 GPA | 27557-30458 ksi |
| Imodyuli yobuninzi (isiqhelo sentsimbi) | 140 GPA | 20300 ksi |
| Imodyuli yokucheba (isiqhelo sentsimbi) | 80 GPA | 11600 ksi |
| Umlinganiselo wePoisson | 0.27-0.30 | 0.27-0.30 |
| Izod Impact | 115 J | 84.8 ft.lb |
| Ubunzima, Brinell | 149 | 149 |
| Ukuqina, iKnoop (iguqulelwe kwiBrinell hardness) | 169 | 169 |
| Ukuqina, uRockwell B (uguqulelwe kwiBrinell hardness) | 80 | 80 |
| Ukuqina, uVickers (uguqulelwe kwiBrinell hardness) | 155 | 155 |
| I-Machinability (i-hot rolled and cold drawed, ngokusekelwe kwi-100 machinability ye-AISI 1212 yentsimbi) | 65 | 65 |
5. Ukwenziwa kweMathiriyeli 8620 Steel
I-AISI 8620 yentsimbi yengxubevange yenziwe kwiqondo lobushushu lokuqala elimalunga ne-2250ºF (1230ºC) ukuya kutsho malunga ne-1700ºF(925ºC.) phambi konyango lobushushu obuqinileyo okanye ukungcwatywa kwecarburizing. I-alloy ipholiswa ngumoya emva kokubunjwa.
6. I-ASTM 8620 yoNyango loBubushushu beNsimbi
I-AISI 8620 yentsimbi inokunikwa i-anneal epheleleyo ngobushushu ukuya kwi-820℃ - 850℃, kwaye ibambe de iqondo lobushushu lifane kulo lonke icandelo kwaye liphole eziko okanye umoya upholile.
Ukufudumeza ubushushu baphathwe kunye namanzi acinywe iindawo 8620 steels (hayi carburized) lwenziwa 400 F ukuya 1300 F ukuphucula ukuqina ityala kunye nempembelelo encinane kubulukhuni bayo. Oku kuya kunciphisa amathuba okusila iintanda.
Intsimbi ye-AISI 8620 iya kuqinisekiswa malunga ne-840 ° C - 870 ° C, kunye neoli okanye amanzi acinywa ngokuxhomekeke kubukhulu becandelo kunye nobugocigoci. Ukupholisa emoyeni okanye kwi-oyile efunekayo.
1675ºF (910ºC) kunye nomoya opholileyo. Le ngenye indlela yokuphucula ubugcisa kwizinto ze-8620; I-normalization nayo ingasetyenziswa phambi kokuqina kwetyala.
7. Ubuchule be-SAE 8620 Steel
Intsimbi ye-8620 ye-alloy yenziwe ngokukhawuleza emva kokunyangwa kobushushu kunye / okanye i-carburizing, kufuneka ibe yincinci ukwenzela ukuba ingaphazamisi imeko enzima yenxalenye. Ukutshiza kunokwenziwa ngeendlela eziqhelekileyo phambi konyango lobushushu - emva kokuba umatshini we-carburizing uqhelekile ekusileni.
8. Welding of 8620 Materials
I-alloy 8620 inokudityaniswa njengemeko eqengqelekayo ngeendlela eziqhelekileyo, ngokuqhelekileyo igesi okanye i-arc welding. Ukufudumala kwi-400 F kunenzuzo kwaye ukufudumeza okulandelayo emva kokukhuthazwa kwe-welding - qhagamshelana nenkqubo ye-weld evunyiweyo yendlela esetyenzisiweyo. Nangona kunjalo, i-welding kwimeko yokuqina okanye ngemeko enzima ayikhuthazwa
9. Ukusetyenziswa kwe-ASTM 8620 Steel
Izinto zensimbi ze-AISI 8620 zisetyenziswa kakhulu ngawo onke amacandelo oshishino ukwenzela ukukhanya ukuya kumacandelo agxininisiweyo aphakathi kunye neeshafti ezifuna ukuxhathisa kokunxiba okuphezulu kunye namandla angundoqo afanelekileyo kunye neempawu zempembelelo.
Usetyenziso oluqhelekileyo zezi: Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide pins, King Pistons, Pistons pins, Gears, Splined Shafts, Ratchets, Sleeves kunye nezinye izinto ezisetyenziswayo apho kuluncedo ukuba nentsimbi enokwenziwa lula kwaye carburized ukuya kubunzulu ityala elawulwa.