AISI 8620 Birtawaa nikkel daawaha hooseeya, chromium, molybdenum kiis adkaynaya birta, guud ahaan waxaa lagu bixiyaa xaalad duuban oo leh ugu badnaan engegnaanta HB 255. Waxaa caadi ahaan lagu bixiyaa 8620 bar wareeg ah.
Way debecsan tahay inta lagu jiro daawaynta la adkaynayo, sidaas awgeed waxay awood u siinaysaa hagaajinta kiska/ hantida asaasiga ah. 8620 oo ka sii qallafsan oo hore u kululaaday (aan karbuunaynin) ayaa lagu sii engejin karaa oogada. Si kastaba ha ahaatee, si fiican ugama jawaabi doonto ololka ama adkaynta kicinta sababtoo ah waxa ku jira kaarboon yar.
Birta 8620 waxay ku habboon tahay codsiyada u baahan isku-dar adag iyo xidhashada iska caabin.
Waxaan siinaa AISI 8620 bar wareeg ah oo kulul oo duuban / Q+T / xaalad caadi ah. Dhexroor la heli karo laga bilaabo 20mm ilaa 300mm shixnadda degdega ah.
1. AISI 8620 Birta Supply Range
8620 Wareega Bar: dhexroor 8mm - 3000mm
8620 Saxanka Birta: dhumucdiisuna waa 10mm - 1500mm x ballac 200mm - 3000mm
8620 Bar Square: 20mm - 500mm
8620 tuubooyinka ayaa sidoo kale diyaar u ah codsigaaga faahfaahsan.
Dhammaystirka dusha sare: Madow, Rough Machined, Roon ama sida ku cad shuruudaha la bixiyay.
Dalka |
USA | DIN | BS | BS |
Japan |
Heerka |
ASTM A29 | DIN 1654 | EN 10084 |
BS 970 |
JIS G4103 |
Darajooyinka |
8620 |
1.6523/ |
1.6523/ |
805M20 |
SNCM220 |
3. ASTM 8620 Biraha & Wax u dhigma Halabuurka Kiimikada
Heerka | Darajo | C | Mn | P | S | Si | Ni | Cr | Mo |
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 |
JIS G4103 | 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. AISI 8620 Guryaha Mechanical Birta
Cufnaanta (lb / cu. in.) 0.283
Cuf-jiid gaar ah 7.8
Kuleylka Gaarka ah (Btu /lb/Deg F - [32-212 Deg F]) 0.1
Meesha dhalaalaysa (Deg F) 2600
Habdhaqanka kulaylka 26
Balaadhinta kulaylka celceliska ee Coeff 6.6
Modul of Elasticity Tension 31
Guryaha | Metric | Imperial |
Xoog xajin | 530 MPa | 76900 psi |
Xoog soo saar | 385 MPa | 55800 psi |
modules laastikada | 190-210 GPA | 27557-30458 ksi |
modules Bulk (caadi ahaan birta) | 140 GPA | 20300 ksi |
Moduleska xiirid (caadi ahaan birta) | 80 GPA | 11600 ksi |
Saamiga Poisson | 0.27-0.30 | 0.27-0.30 |
Saamaynta Izod | 115 J | 84.8 ft.lb |
Adag, Brinell | 149 | 149 |
Adag, Knoop (oo laga beddelay adkaanta Brinell) | 169 | 169 |
Adag, Rockwell B (oo laga beddelay adkaanta Brinell) | 80 | 80 |
Adag, Vickers (oo laga beddelay adkaanta Brinell) | 155 | 155 |
Machinability (kulul duuban iyo qabow la sawiray, oo ku salaysan 100 farsamaynta ee AISI 1212 steel) | 65 | 65 |
5. Been abuurista Qalabka 8620 Birta
AISI 8620 birta daawaha waxaa lagu been abuuraa heerkul bilow ah oo ah 2250ºF (1230ºC) ilaa qiyaastii 1700ºF(925ºC.) kahor daawaynta kulaylka adag ama karbuunta. Daawaha hawada ayaa la qaboojiyaa ka dib marka la been abuuro.
6. ASTM 8620 Daaweynta Kulaylka Birta
AISI 8620 birta waxaa lagu siin karaa xinjir buuxa kulayl ilaa 820 ℃ - 850 ℃, oo hay ilaa heerkulku labis yahay qaybta oo dhan oo ku qabooji foornada ama hawada la qaboojiyey.
Heerkulka kulaylka la daweeyay iyo qaybo ka mid ah biyaha la demiyay ee 8620 birta ah (aan karbuunaynin) ayaa lagu sameeyaa 400 F ilaa 1300 F si loo hagaajiyo adkaanta kiiska iyada oo ay saameyn yar ku yeelanayso adayggeeda. Tani waxay sidoo kale yareyn doontaa suurtagalnimada dildilaaca.
Birta AISI 8620 waxa lagu hagaajin doonaa agagaarka 840°C – 870°C, oo saliid ama biyo ayaa la demi doonaa iyadoo ku xidhan cabbirka qaybta iyo qallafsanaanta. Ku qabooji hawo ama saliid ayaa loo baahan yahay.
1675ºF (910ºC) oo hawo qabow. Tani waa hab kale oo lagu hagaajinayo mashiinnada 8620 walxaha; caadiyeyntu waxa kale oo la isticmaali karaa ka hor adkaynta kiiska.
7. Mashiinada SAE 8620 Birta
Birta daawaha ah ee 8620 si sahal ah ayaa loo farsameeyaa ka dib daaweynta kulaylka iyo /ama carburization, waa inay ahaataa ugu yaraan si aanay u wiiqin kiiska adag ee qaybta. Makiinada waxaa laga yaabaa in lagu sameeyo habab caadi ah ka hor daaweynta kulaylka - ka dib mashiinada kaarburintu waxay inta badan ku kooban tahay shiida.
8. Alxanka 8620 Qalabka
Daawaha 8620 waxa lagu alxan karaa sidii xaalad duuban iyadoo la adeegsanayo hababka caadiga ah, sida caadiga ah alxanka gaaska ama arc. Kuleylinta 400 F ayaa faa'iido leh, kulaylka xiga ka dib alxanka ayaa lagula talinayaa - la tasho habka alxanka ee la ansixiyay habka loo isticmaalo. Si kastaba ha ahaatee, alxanka kiisku wuu adkaaday ama xaalad adag laguma talinayo
9. Codsiga ASTM 8620 Birta
Qalabka birta ah ee AISI 8620 waxaa si weyn u isticmaala dhammaan qaybaha warshadaha iftiinka iyo qaybaha culeyska dhexdhexaadka ah iyo ulaha u baahan caabbinta xirashada dusha sare oo leh awood macquul ah iyo sifooyinka saameynta.
Codsiyada caadiga ah waa: Arbors, Bearings, Bushings, Cam Shafts, Pinions kala duwan, biinanka hagaha, King biinanka, biinanka biinanka, Gears, kabsan shafts, Ratchets, Sleeves iyo codsiyada kale halkaas oo ay waxtar u leedahay in la haysto bir si diyaar ah loo farsamayn karo iyo carburized si loo xakameeyo moolka kiiska.