摘要:
In knitting parts of a knitting machine(a guide, needle tongue and the like of a warp knitting machine), an anti-corrosion layer 12 formed by wet plating, an intermediate layer 14 formed by dry plating and a hard carbon film 16 formed by dry plating are successively laminated on and applied to, at least, a surface of that portion of a carbon steel base material 10 shaped to profile the knitting parts, which portion contacts with knitting yarn, and the anti-corrosion layer 12 formed by wet plating is applied to a surface other than the portion. So, the anti-corrosion layer prevents rust and corrosion which would otherwise be developed on a surface of the carbon steel base material 10, and the hard carbon film is firmly and adhesively applied, at least, to the surface of the portion contacting with the knitting yarn with the intermediate layer therebetwen, so that the thickness of the entire film is made small to provide an adequate wear resistance without impairing toughness of the base material, thereby markedly improving the durability.
摘要:
A dent (1A) for a reed for use on a high-speed weaving machine, comprises a thin flat strip (3) made of stainless steel, and a hard carbon film (2) formed on only the surface of a working ridge edge portion (3b) of the thin flat strip (3) to come into sliding contact with a yarn. The method of manufacture comprising steps of superposing a plurality of thin flat strips (3) made of a stainless steel in the same shape in a stack with the flat side surfaces (3a) of the adjacent thin flat strips (3) in close contact with each other, placing the stack of thin flat strips (3) in a film forming atmosphere with the ridge edge portions opposite the working edge portions (3b) to come in sliding contact with a yarn trued up by a dent aligning jig, and coating the working ridge edge portions (3b) of the thin flat strips (3) exposed to the film forming atmosphere with a hard carbon film (2).