Shell sokubumbela eyahlulayoyinkqubo apho isanti exutywe ne-resin ye-thermosetting ivumelekile ukuba idibane nepleyiti yentsimbi eshushu, ukuze iqokobhe elincinci nelomeleleyo lomngundo lenziwe lijikeleze i-pattem. Ke igobolondo iyasuswa kwipateni kwaye ijongane kwaye irhuqe isuswe kunye kwaye igcinwe kwibhaskithi enezinto eziyimfuneko zokubuyisela umva kwaye intsimbi etyhidiweyo ithululelwa kwisikhunta.
Ngokubanzi, isanti eyomileyo necocekileyo (90 ukuya kwi-140 GFN) engenalo kwaphela udongwe isetyenziselwa ukulungisa isanti yokubumba iqokobhe. Ubungakanani beenkozo oza kukhethwa buxhomekeke kubuso obugqityiweyo ekufunweni. Kulungile ukuba ubungakanani beenkozo budinga isixa esikhulu sentlaka, esenza ukuba ukungunda kubize.
Ii-resin zokwenziwa ezisetyenziswa ekubumbeni kweqokobhe ngokuyintloko zii-resins ze-thermosetting, ezithi ziqiniswe ngokungenakubuyiselwa bubushushu. Ii-resins ezisetyenziswa kakhulu zii-phenol formaldehyde resins. Ukudityaniswa kwesanti, banamandla aphezulu kakhulu kunye nokuchasana nobushushu. Ii-resin ze-phenolic ezisetyenziswa ekubumbeni kweqokobhe zihlala ziindidi zamanqanaba amabini, oko kukuthi, i-resin ine-phenol engaphezulu kwaye isebenza njenge-thermoplastic material. Ngexesha lokutyabeka kunye nentlabathi i-resin idityaniswa ne-catalyst efana ne-hexa methylene tetramine (hexa) kwinani elimalunga ne-14 ukuya kwi-16% ukuze kuphuculwe iimpawu zethemosetting. Amaqondo obushushu aphilisayo aya kuba malunga ne-150 C kwaye ixesha elifunekayo liya kuba yimizuzwana engama-50 ukuya kuma-60.
Izinto eziluncedo zeShell Umngundo Inkqubo yokuphosa
1. Shell-ngumngundo castings zichanekile ngokubanzi ngokwamacala kunokusikwa kwesanti. Kuyenzeka ukuba ufumane ukunyamezelana kwe -0.25 mm yokuphosa iintsimbi kunye +0. I-35 mm yokuphosa i-iron cast phantsi kweemeko zomsebenzi eziqhelekileyo. Kwimeko yokubumba okusisigxina kweqokobhe, umntu angayifumana kuluhlu lwe: +0.03 ukuya +0.13 mm kwizicelo ezithile.
2. Umphezulu ogudileyo unokufunyanwa kwiishells ezilahliweyo. Oku kufezekiswa ngokobungakanani bokutya okuziinkozo okusetyenzisiweyo. Uluhlu oluqhelekileyo loburhabaxa kuku-odola kwe-3 ukuya kwi-6 zeesipron.
3. Uyilo lwee-angles, ezingaphantsi kune-sandings castings, ziyafuneka ekubunjweni kweqokobhe. Ukuncitshiswa kwee-engile ezisayilwayo kunokuvela kwi-50 ukuya kwi-75%, ethi isindise iindleko zeendleko kunye neendleko zomatshini ezilandelayo.
Ngamanye amaxesha, ii-cores ezikhethekileyo zinokupheliswa ekubunjweni kweqokobhe. Kuba isanti inamandla aphakamileyo ukubumba kunokwenziwa ngendlela yokuba imingxunya yangaphakathi inokwenziwa ngokuthe ngqo kunye nesidingo se-shell cores.
5. Kananjalo, amacandelo acekeceke kakhulu (ukuya kuthi ga kwi-0.25 mm) yohlobo lweentloko zeesilinda ezipholileyo emoyeni zingenziwa ngokulula ngumbumba weqokobhe ngenxa yamandla aphezulu esanti esetyenziselwa ukubumba.
6. Ukungena kwegobolondo kuphezulu kwaye ke ngoko akukho kufakwa kwegesi kwenzeka.
7. Isixa esincinci kakhulu sesanti kufuneka sisetyenziswe.
8. Uomatshini bufumaneka lula ngenxa yenkqubo elula yokubandakanyeka ekubumbeni kweqokobhe.
Imida yeNkqubo yokuphosa iShell Mold
1. Iipattens zibiza kakhulu kwaye ke zinoqoqosho kuphela xa zisetyenziswa kwimveliso enkulu. Kwisicelo esiqhelekileyo, ukubumba kweqokobhe kuba noqoqosho ngaphezulu kokubumba kwesanti ukuba imveliso efunekayo ingaphezulu kwamaqhekeza ayi-15000 ngenxa yeepateni zexabiso eliphezulu.
2. Ubungakanani bokuphosa okufunyenwe kukuqokelelwa kweqokobhe kulinganiselwe. Ngokubanzi, ukuphosa okunobunzima ukuya kuthi ga kwi-200 kg kunokwenziwa, nangona kubuncinane, ukuphoswa ukuya kubunzima be-450 kg kwenziwa.
3. Iimilo ezinzima kakhulu azifumaneki.
4. Izixhobo ezintsonkothileyo ziyafuneka ekuphatheni ubumbeko lweqokobhe olufana nolo lufunekayo kwiipateni zentsimbi eshushu
Ixesha leposi: Dec-25-2020