Datong Hydraulic

  Chrome Plated Bar   is typically used for hydraulic cylinder rods. It is stocked in two basic conditions; Chrome Plated Only and IHCP bar ( Induction Hardened Chrome Plated ). The primary difference is that IHCP bars are induction hardened to give a hard case on the surface for support to the chrome plating; this minimizes surface damage to the chrome from abrasion and/or impact. Also, AISI 1045/50 Chrome Plated and IHCP are both available in standard and high strength properties. Thickness of chrome plating is designated as either Standard (0.0005″ min.) or Heavy (0.001″ min.). HERE BELOW IS THE APPLICATION LIST OF THE CHROME RODS: Hydraulic cylinders  (chrome plated piston rods) Pneumatic cylinders / air cylinders (hydraulic cylinder piston rods)  Guide rods for plastic manufacturing machine and hydraulic machinery Rollers for machines, such as packing machine rollers, printing machine rollers Shaft for machinery, such as Textile machinery center axle, Transport ...

 For the design of  hydraulic cylinders , speed and power must be calculated in dependence of the existing pressure in the cylinder space and the volume flow available. For this, the admissible values for the operating pressure in dependence of the pressure series and the admissible oil speed in the hydraulic ports must be taken into account. Formula symbol Dk Bore ds  Piston rod  diameter p Pressure in cylinder A1, A2 Working areas of cylinder F1, F2 Force extending and force retracting of cylinder v1, v2 Travel speed Q1, Q2 Flow rate Hydraulic cylinder designers need to think about the scale and size of a hydraulic cylinder. A  cylinder  that has an excessive reach poses the risk of buckling – meaning that the rod and barrel have to be engineered to be larger. However, this increase in area would have a bigger force, potentially over engineering the fabrication and making it heavier.

  Chrome cylinder rod  is produced by using advanced processing techniques usually on AISI 1045/4140 or other steel rods, for surface removal, polishing, induction hardening, followed by hard chrome plating to a thickness minimum of 0.0005” or 0.001” per side. The finished product results in a superior impact resistant bar ideal for high quality piston rods capable of handling tough environments. Industrial hard chrome plating is very different from the decorative chrome you’d find on the Harley tailpipe that wakes up your neighbourhood from time to time. The biggest difference is hardness. For  cylinder rods , leading hydraulic seal manufacturer Hallite recommends chrome hardness of at least 67 Rockwell C (900 HV/10). However, there are other factors that go into the hard chrome plating process to ensure it is suitable for the proper operation and performance of your  hydraulic cylinder

  Induction hardening is a type of surface hardening in which a metal part is induction-heated and then quenched. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly without affecting the properties of the part as a whole. Induction heating is a non contact heating process which uses the principle of electromagnetic induction to produce heat inside the surface layer of a work-piece. By placing a conductive material into a strong alternating magnetic field, electric current can be made to flow in the material thereby creating heat due to the I2R losses in the material. In magnetic materials, further heat is generated below the curie point due to hysteresis losses. The current generated flows predominantly in the surface layer, the depth of this layer being dictated by the frequency of the alternating field, the surface power density, the permeabil...