Gaineamh fùirneis ceirmeach airson pròiseas gainmhich uaine

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.

Tha gainmheach fhùirneis ceirmeach sintered air a dhèanamh sa mhòr-chuid de mhèinnirean anns a bheil Al2O3 agus SiO2 agus air a chur ris le stuthan mèinnearach eile. gainmheach fhùirneis spherical air a dhèanamh le pròiseasan pùdar, pelletizing, sintering agus rangachaidh. Is e am prìomh structar criostail aige Mullite agus Corundum, le cumadh gràin cruinn, àrd refractoriness, deagh sheasmhachd thermochemical, leudachadh teirmeach ìosal, buaidh agus strì an aghaidh sgrìobadh, feartan de bhriseadh làidir. Nuair a thèid gainmheach ceirmeag a chuir an sàs ann am pròiseas gainmhich uaine, dh’ fhaodadh e na h-amannan ath-chleachdadh gainmheach amh àrdachadh, lughdachadh sgaoilidhean gainmhich sgudail, toradh tilgeadh nas fheàrr.