surface-hardening steel
111photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates …
112aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… …
113Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …
114Inconel — is a registered trademark of Special Metals Corporation that refers to a family of austenitic nickel based superalloys. Inconel alloys are typically used in high temperature applications. It is often referred to in English as Inco (or… …
115Cold saw blade — Cold saw blades are circular metal cutting saw blades categorized into two types: Solid High Speed Steel (HSS) or Tungsten Carbide Tipped (TCT). Both types of blades are resharpenable and may be used many times before being discarded. Cold saw… …
116Rivet — A rivet is a mechanical fastener. Before it is installed it consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck tail. On installation the rivet is placed in a pre drilled hole. Then the tail …
117industrial polymers, major — Introduction chemical compounds used in the manufacture of synthetic industrial materials. In the commercial production of plastics, elastomers, man made fibres, adhesives, and surface coatings, a tremendous variety of polymers are… …
118Solid solution strengthening — is a type of alloying that can be used to improve the strength of a pure metal. The technique works by adding atoms of one element (the alloying element) to the crystalline lattice another element (the base metal). The alloying element diffuses… …
119World War I — the war fought mainly in Europe and the Middle East, between the Central Powers and the Allies, beginning on July 28, 1914, and ending on November 11, 1918, with the collapse of the Central Powers. Abbr.: WWI Also called Great War, War of the… …
120Parallels (engineering) — Engineering parallels are rectangular blocks of metal, commonly tool steel, stainless steel or cast iron, which have 4 or 6 faces ground or lapped to a precise surface finish. They are used when machining with a miller, drill or any other… …
