Mchanga wa msingi wa kauri kwa mchakato wa mchanga wa kijani

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.

Mchanga wa sintered kauri hupatikana hasa kwa madini yenye Al2O3 na SiO2 na kuongezwa na vifaa vingine vya madini. Mchanga wenye umbo la duara uliotengenezwa na poda, utiririshaji, uwekaji na uwekaji madaraja. Muundo wake mkuu wa kioo ni Mullite na Corundum, yenye umbo la nafaka mviringo, kinzani ya juu, uthabiti mzuri wa thermokemikali, upanuzi wa chini wa mafuta, athari na upinzani wa abrasion, sifa za kugawanyika kwa nguvu. Wakati mchanga wa kauri unapotumika katika mchakato wa mchanga wa kijani, unaweza kuongeza nyakati za mchanga mbichi kutumika tena, kupunguza uzalishaji wa mchanga wa taka, kuboresha mavuno ya kutupa.