Ceramic foundry mchenga wobiriwira wobiriwira

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.

Mchenga wa sintered ceramic foundry umakhala wopangidwa ndi mchere wokhala ndi Al2O3 ndi SiO2 ndikuwonjezedwa ndi zinthu zina zamchere. Mchenga wozungulira wopangidwa ndi ufa, pelletizing, sintering ndi grading process. Kapangidwe kake kakang'ono ka kristalo ndi Mullite ndi Corundum, wokhala ndi chimanga chozungulira, kukana kwakukulu, kukhazikika kwabwino kwa thermochemical, kutsika kwamafuta pang'ono, kukhudzidwa ndi kukana abrasion, mawonekedwe agawidwe amphamvu. Pamene mchenga wa ceramic umagwiritsidwa ntchito mumchenga wobiriwira, ukhoza kuonjezera nthawi yomwe mchenga ukugwiritsidwanso ntchito, kuchepetsa mpweya wa mchenga wa zinyalala, kutulutsa zokolola zabwino.