Te kirikiri whakarewa mo te mahi kirikiri kirikiri

Green Sand Castings are castings made using wet sand or “green sand” molds. The sand is not green in color nor do the molds use “greensand,” a greenish color sandstone. Instead of the sand is called “green” because it has moisture in it (like green wood) before the sand dries out when molten metal is poured in the mold.

What gives the sand moisture and helps the sand stick together when making molds is the clay that is mixed in the sand. Bentonite clay and the sand mixed together provide strong molds that can be created on an automated assembly line.

Ko te nuinga o te kirikiri kirikiri kirikiri he mea hanga ki nga kohuke kei roto Al2O3 me SiO2 me te taapiri me etahi atu rauemi kohuke. He kirikiri hanga porowhita i mahia e te paura, te pelletizing, te sintering me te mahinga māka. Ko tona hanganga tioata matua ko Mullite me Corundum, he porotaka te ahua o te witi, te kaha o te whakamaarama, te pai o te whakamaarama matū, te iti o te whakawhänuitanga o te waiariki, te paheketanga me te aukati ， nga ahuatanga o te wehenga kaha. I te wa e whakamahia ana te kirikiri kirikiri ki roto i nga mahi kirikiri kaakaariki, ka nui ake te waa kua whakamahia ano te kirikiri mata, ka whakaheke i nga tukunga kirikiri ururua, ka pai ake te whakaputanga o te makanga.