A good understanding of why some refractories work better than others under certain operating conditions can make the selection process easier.
Selecting the appropriate furnace refractory and kiln furniture for furnaces used to process powder metallurgy (PM) and metal injection molded (MIM) parts can be made easier by following some general guidelines and considerations. Furnace refractories (which can provide insulation, support and wear resistance) include bricks, muffles, beams and hearth plates that line a furnace (Fig. 1). Kiln furniture, including batts, plates, slabs, boats, saggers, setters, fixtures and posts, generally is used to support the product being sintered in continuous and batch furnaces, and often is considered as a consumable.