Lost wax casting technique in our country is now in an era of popular, so people also know that we use in lost wax casting and has been in progress, so today we are going to follow houjie toplan lost wax casting binder.Lost wax casting sodium silicate is the most widely used in our country revestment precision forging of adhesives.The chemical formula for Na20.7 Tr, Si02 T1H20.It is with quartz sand and soda (Na2 CO.)Or anhydrous glauber's salt (sodium industry Na: SO.) and natural mirabilite confuse heating, bereft of sodium silicate (water glass half scrap), then sodium silicate soluble in boiling water and production.It is a variety of confusion with the sodium silicate system, stainless steel castings this still contains certain amount of free silica.Sodium silicate, alkaline pH common in 11 ~ 13.