Nothing protects molds like diamonds. (Tooling).A new diamond-studded chrome composite coating for molds is said to offer higher toughness and durability than conventional hard-chrome plating. The new Dia-Clust coating from Bales Mold Service Inc., Downers Grove Downers Grove, village (1990 pop. 46,858), Du Page co., NE Ill.; settled 1832, inc. 1873. Downers Grove has undergone population growth and commercial development that include the construction of new office complexes. , Ill., provides a Rockwell hardness in the high 80s, which is 25% higher than hard-chrome plating and reportedly offers three to five times better abrasion resistance. Corrosion resistance is said to be more than 1000 hours longer in salt-spray testing, and diamond-chrome has a lower coefficient of friction coefficient of friction n. pl. coefficients of friction The ratio of the force that maintains contact between an object and a surface and the frictional force that resists the motion of the object. . The dense, super-hard plating consists of a chromium matrix coating that contains a dispersion of nanometer-sized, spherical diamond particles diamond particles, n.pl the elements of a diamond polishing paste that are used to bring out the natural luster of porcelain surfaces. that are said to be non-abrasive. Dia-Clust is applied at a low temperature (100-120 F), so there is a low risk of annealing annealing (ənēl`ĭng), process in which glass, metals, and other materials are treated to render them less brittle and more workable. compared with titanium nitride coatings that are applied at temperatures up to 900 F. The coating can be applied in thicknesses from 0.00004 to 0.002 in. |
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