Dab tsi yog Zinc Casting thiab Zinc Plating

Dab tsi yog Zinc Casting thiab Zinc Plating

ZINC: Ib qho xiav-dawb, metallic tshuaj lom neeg, feem ntau pom muaj nyob rau hauv kev sib xyaw xws li hauv cov zinc nplua nuj epoxy primer, siv los ua cov txheej tiv thaiv hlau, ua cov khoom siv hauv ntau yam alloys, raws li cov khoom siv hluav taws xob hauv cov roj teeb hluav taws xob, thiab cov ntsev hauv cov tshuaj. Cim Zn atomic hnyav = 65.38 atomic naj npawb = 30. Melts ntawm 419.5 degrees C, los yog approx. 790 degree F.

ZINC CASTING: Zinc nyob rau hauv lub xeev molten yog poured rau hauv ib daim ntawv thiab tso cai rau solidify thiab tsim ib tug xav tau ib feem configuration. Cov khoom siv zinc siv hauv cov txheej txheem no yog qee zaum cov hlau tsis zoo ntawm zinc thiab tuaj yeem ua rau muaj teeb meem outgassing. Yog tias cov zinc molten lossis zinc alloy txias dhau sai heev thaum nws raug txhaj rau hauv daim ntawv pwm nws yuav ua rau muaj kev sib koom ua ke uas nyob rau hauv lem yuav ua rau huab cua nkag uas yuav ua rau outgassing thiab / los yog blistering thaum lub entrapped huab cua nthuav thaum lub sij hawm kho cua sov voj voog ntawm lub txheej txheej txheej.

ZINC PLATING: Ntau hom zinc plating nto muaj nyob rau hauv ntau yam thicknesses. Qee tus yuav nkag siab txais cov txheej txheem organic thiab qee qhov yuav tsis. Cov khoom siv zinc nws tus kheej yog noobrally tsis ua rau muaj teeb meem tab sis saib xyuas cov brighteners, wax seals, thiab lwm yam khoom siv los ua kom ntev lub sij hawm uas oxidation ntawm zinc tiav.

Daim ntawv thov ntawm cov zinc txheej ua lub hauv paus txheej ua ntej daim ntawv thov ntawm cov organic txheej muab kev tiv thaiv kev fij thiab kev tiv thaiv kev tiv thaiv uas tau muab los ntawm cov organic topcoat. Hom kev tiv thaiv ntxiv no kuj muaj los ntawm kev thov ntawm txhuas thiab zinc los ntawm cov tshuaj tsuag hlau. Nws yog ib qho tseem ceeb rau kev sib txuas lus rau zinc plater lossis cov khoom siv hlau uas koj npaj siab yuav pretreat thiab siv cov organic txheej rau saum npoo.