I-Casting coating yinto encedisayo efakwe phezu kwendawo yokubumba okanye ingundoqo, edlala indima ebalulekileyo ekuphuculeni umgangatho womhlaba wokuphosa.Iingcibi zaseTshayina zakuqala, ngaphezu kweminyaka engama-3000 eyadlulayo, zilungiselele kwaye zasebenzisa ngempumelelo ukutyabeka, ukwenza igalelo elibalulekileyo kuphuhliso lobugcisa bokuphosa.
Ngophuhliso lwemveliso kunye nobuchwepheshe, iimfuno zomgangatho wokuphosa ziyanda imihla ngemihla.Ukuze kwandiswe ukukhuphisana kweemveliso zabo, ii-Foundries ezininzi zizinikela kuphando lweengubo zokwaleka ngenxa yeengxaki zemveliso.
Oku kulandelayo, ngokufutshane malunga nokugquma kweengxaki ezininzi.
Okokuqala, umxholo oqinileyo kunye namandla okugquma
Ngoku, i-coating esetyenziselwa isanti ebotshiweyo ye-resin ifuna umxholo wayo ophezulu oqinileyo kunye nokuqina okuphezulu, okubangelwa ubukhulu becala kwingqwalasela ezimbini.
1. Ziqhelanise neempawu zokungunda kwesanti
Ngaphambili, isanti yodongwe emanzi uhlobo lwesanti ayipeyinti, ipeyinti yayisetyenziselwa kuphela uhlobo lwesanti yodongwe eyomileyo.Ngenxa yamandla entlabathi yodongwe uhlobo owomileyo liphantsi kakhulu, kwaye ukwenza castings kubalulekile okanye castings ezinkulu, imfuneko yokwaleka hayi kuphela ukwenza umaleko ukwahlula, kwaye ifuna infiltration ekugaleleni ukutyabeka umphezulu ezi zilandelayo, best. ebandakanya i-3 ~ 4 isanti, yenza umphezulu wokubumba uphuculwe, ngoko ke, i-viscosity yepeyinti ayinakukwazi ukuphakama kakhulu, umxholo oqinileyo awuphezulu kakhulu.
2. Ukuqwalasela ukonga umbane, ukukhuselwa kwendalo kunye nokunciphisa iindleko zemveliso
Izithwali zolwelo ezisetyenziswa kwiingubo, ikakhulu amanzi kunye neealkoholi.20 iinkulungwane 70 ~ 80 ixesha, esetyenzisiweyo akudingi komiswa okanye ukuvutha, kunokokwenza volatilize chlorine isizukulwana hydrocarbons, ezifana dichloromethane, njengomphathi wepeyinti.Ngenxa yobutyhefu bayo, impembelelo yayo engalunganga kwimekobume njengoko iphuphuma emoyeni, kunye neendleko zayo eziphezulu, ngoku ayisetyenziswa kakhulu.
Okwesibini, izinto ezisetyenziselwa ukugquma
Kukho iintlobo ezininzi zezinto ezisetyenziselwa ukuphosa, kwaye ziya kuxhaswa rhoqo ngesiseko sophuhliso loshishino lwezinto eziphathekayo.
1. i-refractory aggregate
I-refractory aggregate iyona nxalenye ephambili yokwaleka, kwaye umgangatho wayo kunye nokukhethwa kwayo kunempembelelo enkulu kwisiphumo sokusetyenziswa kwengubo.Ngexesha elifanayo, xa sikhetha i-aggregate, kufuneka kwakhona senze uhlalutyo olubanzi ngakumbi kucoceko lwamashishini kunye noqoqosho.
2. umthwali,
Abathwali abaphambili abasetyenziselwa ukuphosa iingubo ngamanzi, i-alcohol kunye ne-chlorinated hydrocarbons.Okwangoku, ngenxa yokuqwalaselwa kwexabiso kunye nemiba yokusingqongileyo, esetyenziswa kakhulu kwi-chlorine hydrocarbon njengomphathi we-coating, i-general yi-coating yamanzi kunye ne-alcohol based based coating.
Ixesha lokuposa: Jan-10-2022