Ukuqhathaniswa kwezindleko zenqubo yokukhipha ama-valve

I-Casting iwuhlobo lobuchwepheshe bokusebenza okushisayo kwensimbi obenziwe abantu ngaphambilini, obunomlando weminyaka engaba ngu-6000. I-Casting uhlobo lwendlela yokucubungula encibilikisa insimbi eqinile ibe uketshezi, ithele esibunjeni somumo othize, bese iqina. Izinto zesikhunta se-valve yisihlabathi esingavuthiwe, ubumba, ingilazi yamanzi, i-resin nezinye izinto ezisizayo. Ngekhulu lama-20, ukuthuthukiswa kwe-valve casting kuyashesha kakhulu. Esinye sezici ezibalulekile inqubekelaphambili yobuchwepheshe bomkhiqizo we-valve, odinga izakhiwo ezingcono zemishini nezomzimba kanye nokusebenza kahle kwemishini; Esinye isizathu ukuthi ukuthuthukiswa kwemboni ye-valve ngokwayo kuye kwakha izimo ezivumayo zezinto ezibonakalayo embonini yokusungula. Inkulumo elandelayo mayelana nenqubo yokukhipha ama-valve kanye nokuqhathaniswa kwezindleko.

I-wax yokutshala imali ephakathi kwezinga lokushisa yinqubo yokwenza igobolondo le-silica sol, kuyilapho i-wax yokushisa ephansi ngokuvamile ihlanganiswa nenqubo yokwenza igobolondo le-sodium silicate! Ukuncipha kwengcina yezinga lokushisa eliphakathi kukhulu kunaleyo yengcina yezinga lokushisa eliphansi ngenxa yokuthi kunomusi wamanzi ekunamathiseleni kwewax okushisa okuphansi. Futhi i-wax yokushisa ephansi ngokuvamile isetshenziswa ngobuchwepheshe begobolondo lengilazi yamanzi! Ukuncipha kwengcina yezinga lokushisa eliphakathi kukhulu kunaleyo yengcina yezinga lokushisa eliphansi ngenxa yokuthi kunomusi wamanzi ekunamathiseleni kwewax okushisa okuphansi. Uyini umehluko phakathi kokusakazwa kwe-wax yezinga lokushisa elimaphakathi kanye nokusakazwa kwe-wax kwezinga lokushisa eliphansi?

1. I-wax yokushisa ephezulu ihlanganiswa nenqubo yokwenza igobolondo le-silica sol, kuyilapho i-wax yokushisa ephansi ngokuvamile ihlanganiswa nenqubo yokwenza igobolondo le-sodium silicate.

2. Ukuncipha kwe-wax yokushisa okuphezulu kukhulu kunaleyo ye-wax yokushisa okuphansi ngenxa yokuthi kukhona umhwamuko ku-wax wax okushisa okuphansi.

3. Ukuncipha kwengcina yezinga lokushisa eliphakathi kukhulu kunaleyo yengcina yezinga lokushisa eliphansi ngenxa yokuthi kunomusi wamanzi ekunamathiseleni kwe-wax okushisa okuphansi.

4. Ubukhulu be-wax yokushisa okuphakathi buzinzile kunaleyo ye-wax yokushisa ephansi, futhi intengo ibiza kakhulu.