Iintsimbi ezikhatywayo ezithambileyo zidla ngokujulwaukugalela isanti eluhlazaokanye isanti egqunywe ngentlakaiqokobhe ngundo ukuphosaiinkqubo kwi-RMC casting foundry.
Ii-ayini zentsimbi zialloyi zeferrous ezinekhabhoni engaphezulu kwe-2%. Nangona iintsimbi eziphothiweyo zinokuba nepesenti yekhabhoni phakathi kwe-2 ukuya kwi-6.67, umda osebenzayo uqhelekile phakathi kwe-2 kunye ne-4%. Ezi zibalulekile ikakhulu ngenxa yeempawu zabo ezibalaseleyo zokusa. Iintsimbi eziphoswe ngengwevu, iintsimbi ezityhidiweyo (ezikwabizwa ngokuba yi-nodular cast iron or spheroidal graphite iron) kunye nentsimbi ekhatywayo ethambileyo zezona ntsimbi zintathu ziphambili kwisiseko.
Intsimbi etyhidiweyo etyhidiweyo inekhabhoni yasimahla ekhoyo ngendlela yamaqhuqhuva kwimatrix yesamente kunye neferrite. Oku kuphunyezwa ngokupholisa kuqala ukuphosa ukuze yonke intsimbi emhlophe yenziwe, ilandelwe yinkqubo yonyango yobushushu elawulwayo ukuze enye i-cementite iguqulwe ibe yi-ferrite kunye namaqhuqhuva ekhabhoni yasimahla. Esi sixhobo sine-ductile ngakumbi kune-grey cast iron. Okuifomu ilungele kuphela amacandelo anobungqingqwa becandelo elincinci kakhulu kuba yonke intsimbi etyhidiweyo emhlophe yenze indawo yokuqalisa yentsimbi ethambileyo.
Ukubunjwa kwe-shell mold yinkqubo apho isanti exutywe ne-thermosetting resin ivumelekile ukuba idibane nepleyiti ye-metallic evuthayo, ukwenzela ukuba iqokobhe elibhityileyo neliqinileyo lokungunda lenziwe lijikeleze i-pattem. Emva koko igobolondo iyasuswa kwipatheni kwaye i-cope kunye ne-drag isuswe kunye kwaye igcinwe kwi-flask kunye nezinto eziyimfuneko zokubuyisela kunye nentsimbi etyhidiweyo igalelwe kwi-mold.
Ngokuqhelekileyo, isanti eyomileyo necolekileyo (i-90 ukuya kwi-140 GFN) ekhululekile ngokupheleleyo kudongwe isetyenziselwa ukulungiselela isanti yokubumba iqokobhe. Ubungakanani beenkozo ezikhethiweyo buxhomekeke kwisiphelo somphezulu ofunekayo ekugaleleni. Ukucolwa kakhulu ubungakanani beenkozo kufuna isixa esikhulu sentlaka, nto leyo eyenza ukuba ukungunda kubize kakhulu.
Izinto eziluncedo kwiResin Coated Sand Shell Mold Casting:
1. Ukwenziwa komngundo weqokobhe ngokuqhelekileyo kuchaneke ngokomlinganiselo ngakumbi kunesanti. Kunokwenzeka ukuba ufumane ukunyamezela kwe-+0.25 mm ye-castings yensimbi kunye +0. I-35 mm ye-grey cast iron castings phantsi kweemeko eziqhelekileyo zokusebenza. Kwimeko yokubumba iqokobhe esondeleleneyo, umntu unokuyifumana kuluhlu lwe +0.03 ukuya +0.13 mm kwizicelo ezithile.
2. Umphezulu ogudileyo unokufumaneka kwi-shell castings. Oku kuphunyezwa ikakhulu ngobungakanani obucolekileyo obusetyenziswayo. Uluhlu oluqhelekileyo loburhabaxa luyi-odolo ye-3 ukuya kwi-6 microns.
3. Ii-engile zokuyila, ezingaphantsi kwesanti, ziyafuneka kwi-shell molds. Ukuncitshiswa kwee-angles eziqulunqiweyo kunokusuka kwi-50 ukuya kwi-75%, egcina kakhulu iindleko zempahla kunye neendleko zomatshini ezilandelayo.
4. Ngamanye amaxesha, ii-cores ezikhethekileyo zinokukhutshwa ekubunjweni kweqokobhe. Kuba isanti inamandla aphezulu ukungunda kunokuyilwa ngendlela yokuba imingxunya yangaphakathi yenziwe ngokuthe ngqo kunye nesidingo semiqolo yeqokobhe.
5. Kwakhona, amacandelo amancinci kakhulu (ukuya kwi-0.25 mm) yohlobo lweentloko ze-cylinder ezipholileyo zomoya zingenziwa ngokulula ngokubumba igobolondo ngenxa yamandla aphezulu entlabathi esetyenziselwa ukubumba.
6. Ukunyanzeliswa kwegobolondo kuphezulu kwaye ngoko akukho kufakwa kwegesi okwenzekayo.
7. Isanti encinci kakhulu kufuneka isetyenziswe.
8. Umatshini unokwenzeka ngokulula ngenxa yokulungiswa okulula okubandakanyekayo ekubumbeni iqokobhe.
| I-Resin efakwe kwi-Sand Casting Metal kunye ne-alloys | |
| Isinyithi kunye neeAlloys | IBanga elidumileyo |
| Grey Cast Intsimbi | GG10~GG40; GJL-100 ~ GJL-350; |
| Ductile (Nodular) Cast Intsimbi | GGG40 ~ GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2 |
| I-Austempered Ductile Iron (ADI) | EN-GJS-800-8, EN-GJS-1000-5, EN-GJS-1200-2 |
| Intsimbi yeCarbon | C20, C25, C30, C45 |
| Intsimbi yentsimbi | 20Mn, 45Mn, ZG20Cr, 40Cr, 20Mn5, 16CrMo4, 42CrMo, 40CrV, 20CrNiMo, GCr15, 9Mn2V |
| Yenziwe ngentsimbi eshayinayo | I-Ferritic Stainless Steel, i-Martensitic Stainless Steel, i-Austenitic Stainless Steel, i-Precipitation Hardinless Steel, i-Duplex Stainless Steel |
| Iingxube zeAluminiyam | ASTM A356, ASTM A413, ASTM A360 |
| Ubhedu / i-Alloys esekwe kwiCopper | C21000, C23000, C27000, C34500, C37710, C86500, C87600, C87400, C87800, C52100, C51100 |
| Umgangatho: ASTM, SAE, AISI, GOST, DIN, EN, ISO, kunye ne-GB | |
| CNC Precision Machining Izakhono | ||||
| Izibonelelo | Ubungakanani | Ubungakanani Uluhlu | Amandla oNyaka | Ukuchaneka ngokubanzi |
| Iziko loMatshini elithe nkqo (VMC) | 48 iiseti | 1500mm × 1000mm × 800mm | 6000 tonn okanye 300000 amaqhekeza | ±0.005 |
| Iziko loMatshini elithe tye (VMC) | 12 iiseti | 1200mm × 800mm × 600mm | 2000 iitoni okanye 100000 amaqhekeza | ±0.005 |
| Umatshini weCNC | 60 iiseti | UMax ujika idia. φ600mm | Iitoni ezingama-5000 okanye iziqwenga ezingama-600000 | |
