Expendable molds , which typically are made of sand, plaster, ceramics, and similar materials and generally are mixed with various binders(bonding agents) for improved properties. These materials are refractories (that is, they are capable of with standing the high temperatures of molten metals). After the casting has solidified, the mold is broken up to remove the casting.
举一反三
- Expendable molds,Which typically are made of sand
- A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers.
- A composite is composed of two (or more) individual materials, which come from metals, ceramics, and polymers. A: 正确 B: 错误
- Sand castingSand casting, the oldest casting process, consists of
- Consider a cement wall reinforced with steel bars. Into which category of materials would you place reinforced concrete? A: Metals B: Non Metals C: Composites D: Ceramics