Casting+i.e+die,+loss+wax,+high+-+pressure

Typ =Casting=

11.3.1 Describe lost wax casting.

 * Wikipaedia reference

11.3.2 Describe how lost wax cast products are made.
//Consider preparation of the master pattern; injection of wax to create copy; creation of a wax tree to make a wide range of small parts from the same metal; covering wax with ceramic or plaster of Paris; removal of wax; and the addition of the final chosen material.//

11.3.3 Explain how a range of products are made using lost wax casting.
//Jewellery, dental implants, hip replacements and wind instrument keys.//

11.3.4 Describe high-pressure die casting.
//Die casting is mainly used for low-melting alloys. Molten metal is forced into a mould under high pressure.//
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11.3.5 Describe how high-pressure die cast products are made.
//Draw a diagram to include holding furnace, injector, gooseneck and die.//

11.3.6 Explain how a range of products are made using high-pressure die casting.
//Consider hip replacements, disk drive chassis and carburettors.//

11.3.7 Outline two advantages and two disadvantages of high-pressure die casting.
//Advantages: high accuracy, good surface finish, thin walls, and high rate of production.// //Disadvantages: high plant costs, high tooling costs, cannot be used for a wide range of alloys, and limitations on maximum size that can be cast.//e in the content of your page here.