Hard Chrome Plated Rod
Material: CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 20MnV6, 42CrMo, SS431, SS430, Stainless Steel 304/316/2205, etc.
Chrome layer: 20 micron (min)
Hardness of the chrome layer:850 HV (min) – 1150 HV
Straightness: <= 0.2/1000
Roughness: Ra <= 0.2u
Roundness: Half of the tolerance ISO f7
Diameter tolerance: ISO f7/h8/g6
Hydraulic cylinder is an important executive element in the hydraulic system of construction machinery.
Used to perform reciprocating motion and drive engineering machinery to complete various functions.
hydraulic cylinder piston rod hard chrome plated rod is an important part of the work, need to withstand greater tensile stress.Thus, the piston rod must have sufficient strength, rigidity, toughness. At the same time, it is easily worn out by abrasive particles during use, and must have high wear resistance.
The heat treatment of the cylinder rod is a key process to ensure the internal quality and mechanical properties of the piston rod. The quality of the heat treatment is directly related to the life and reliability of the entire hydraulic system. If the heat treatment is improper, it will cause the piston rod to break early during the use process, and lightly damage others. Parts, in severe cases, may cause the destruction of the entire equipment.
After quenching and tempering, the chrome-plated rod can obtain good comprehensive mechanical properties. And prepare for the subsequent surface treatment. The purpose of surface hardening is to obtain high surface hardness,To support the surface chrome layer,thereby improving the wear resistance and corrosion resistance of the piston rod. Stress relief annealing is arranged after grinding and before electroplating, In order to fully eliminate the residual stress inside the piston rod, Improve coating quality and product qualification rate and the service life of the piston rod.
Piston rod is to support the work of the piston connecting parts, most used in the cylinder, the cylinder movement of the executive part, is a frequent exercise, technical requirements of the moving parts. To hydraulic cylinder, for example, by: cylinder, piston rod (cylinder rod), piston, cover several parts. The quality of its processing a direct impact on the life and reliability of the entire product. The surface is specially polished and hard chromium electroplating technology, and then polished by the mirror, abrasion resistance, corrosion resistance, could be directly used for fuel tanks, cylinders, shock absorbers, textile printing and dyeing, printing machinery guide rod, die casting machine, Injection molding machine guide rod mandrel and four-column press guide, fax machines, printers and for the industry products of Modern office machinery guide shaft and some other precision slender shaft components and so on.
We also supply good quality hard chrome plated rod for hydraulic cylinders with material certificate. We supply chrome rod in various grade and specification.
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