Habka been abuurka ee Injineerinka Makaanikada - Gacmaha Birta
( dulmar laga soo aruuriyay xogtii ugu dambeysay ee warshadaha)
1. Qalabka & foomka bilowga
Biraha-daawaha hooseeya sida ASTM A181 Class 70, 21CrMoNiV4-7, 42CrMo4 ama 17-4PH waxaa sida caadiga ah loo keenaa vacuum-degas-gaas ama baararka duuban. Gacmo-gacmeedyo darbi culus ah sayidkii foorjarigu wuxuu u jeexjeexayaa birta jeexjeexan, halka gacmaha dhaadheer ee derbiga dhuuban la door bidaayo godan ama bar hore loo qoday si loo badbaadiyo alaabta iyo waqtiga saxaafadda.
2. Kuleyl ka hor
Biriishyada waxaa lagu dalacay foorno joogto ah oo ah 1 150-1 250 ° C (birta) ama 450-500 ° C (gacmo aluminium ah). Raaci labbiska ah (min. 30 min per 100 mm Ø) waxay dammaanad qaadaysaa ≤15 °C delta-T waxayna ka fogaataa dildilaaca rogan inta lagu jiro xanaaqa.
3. Isku xigxiga foornada kulul
Talaabada 1-aad – Kacsi & daloolin: 4 000 t wiish saxafadeed ayaa ka xanaajisay biilka, ka dibna 600 mm dhexroor mandrel ah ayaa feeray dalool dhexe.
Talaabada 2 – Fidi & yaree: donut-ka waxa loo raray 8 000 t press die-die-furan halkaas oo bar mandrel dheeraynayso sleeve iyadoo yaraynaysa dhumucda derbiga; Dhererka-ilaa-derbiga ilaa 30:1 waa suurtagal.
Tallaabada 3 - Qorsheynta & cabbirka: gudbinta kama dambaysta ah ee 1 600 t press waxay keenaysaa dulqaadka OD ilaa +2/-1 mm iyo gidaarka ±1 mm, diyaar u ah mashiinka dhamaystirka ugu yar.
4. Xulashada giraanta-gacan (gacmo-gaaban)
Dhexroorka 200-1 200 mm iyo darbiyada 30-120 mm, giraan-gariir la'aanta ayaa dhakhso badan: hal dab, wareegga 30 s, 20 % toosh halkii 50 % ee dhimashada furan. Koritaanka dhexroorka waxaa kombuyuutarku gacanta ku hayaa ilaa ±1 mm.
5. Daaweynta kulaylka
Caadi heerkulka 880C/hawo qabooji si aad u nadiifiso hadhuudhka, deminta & xanaaqa (Q/T) 860 °C/saliid + 650 °C/2 h si aad u gaadho 550-750 MPa YS, 20 % EL, 45 J –40 °C Charpy. Gacmo culculus oo loogu talagalay guryaha cadaadiska waxay helayaan xanaaq laba heer ah oo lagu daray -80 ° C cryo de-brittle.
6. Kormeerka & gaarsiinta
100% UT halkii ASTM A388 Heerka B, MT ee 100% dusha sare, warbixinta cabbirka leh CPK Xaaladda gaarsiinta caadiga ah: kulul-fog been abuur ah + Q/T + qallafsan-rogtey OD/ID ilaa 2-3 mm stock.
7. Guulaha waxqabadka vs. tuurista
Qulqulka hadhuudhka wareega ee aan kala go'a lahayn ayaa labanlaabmaya xoogga hoop; ma jiro dalool yar oo dhexe oo ka mid ah gacmo-gashi ciid-kabka ah; 30 % culeyska badbaadinta sababtoo ah naqshadeeyayaasha waxay isticmaali karaan walaaca naqshadaynta sare oo leh isla qodobka badbaadada.
8. Xadka cabbirka maanta la gaari karo
OD 80-6 000 mm, dhererkiisu yahay 50-6 000 mm, hal miisaan 10 kg - 15 t, darbi khafiif ah sida 15 mm ee giraangiraha duuban ama dhumucdiisuna tahay 400 mm foornooyinka dhinta furan.
Marka la soo koobo, dariiqa been abuurka ah ee birta-gacan ee casriga ah waxay lammaaneyaal badan yihiin cadaadis-furan oo furan oo leh daloolin mandrel ah iyo giraanta ikhtiyaariga ah, oo ay ku xigto daaweynta kulaylka Q / T iyo NDT buuxa, oo siinaya injineerada farsamada qayb gaar ah oo qumman oo bannaan oo u adkeysanaysa culeysyo badan oo axial ah oo aad uga fiican kabka ama beddelka alxanka.
Kala xiriir Hada
Jianye Metal Manufacturing Co., Ltd.,
