investment molding
21Acrylic glass — chembox new ImageFile = PMMA repeating unit.svg ImageSize = 100px IUPACName = SystematicName = OtherNames = poly(methyl methacrylate) (PMMA) methyl methacrylate resin Section1 = Chembox Identifiers Abbreviations = CASNo = 9011 14 7 EINECS =… …
22Moldmaker — (mouldmaker in British English) is the designation for a profession in the metalworking and ceramics industry. It is a variety of the profession of the toolmaker.[1] The moldmaker produces molds for the injection molding (plastics), die casting… …
23Taxonomy of manufacturing processes — This tree lists various manufacturing processes arranged by similarity of function.#Casting ##Sand casting ##Plastic mold ##Shell mold ##Investment casting (lost wax, precision) ##Permanent mold ##Centrifugal casting ##Die casting ##Slush or… …
24Cope and drag — with cores in place on the drag …
25Casting defect — A casting defect is an irregularity in the metal casting process that is undesired. Some defects can be tolerated while others can be repaired otherwise they must be eliminated. They are broken down into five main categories: gas porosity,… …
26western Africa, history of — Introduction history of the region from the 11th century to the present. A reasonable body of sources for the writing of western African history begins to be available about AD 1000. Three centuries earlier, the Arabs (Arab) had… …
27LABOR — Jewish Labor Organizations IN THE PRE STATE PERIOD Since the last decades of the 19th century, a number of sporadic labor associations have arisen in agriculture and in the printing, clothing, and building trades, as well as groups limited to a… …
28Plastic — is the general common term for a wide range of synthetic or semisynthetic organic solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to… …
29Die casting — An engine block with aluminium and magnesium die castings. Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies… …
30Riser (casting) — Underfeeder redirects here. For the health problem, see Underfeeding. A bronze casting showing the sprue and risers A riser, also known as a feeder,[1] is a reservoir built into a metal casting …
