Datong Hydraulic

As we all know,In the process of using the  hydraulic cylinder , the hydraulic cylinder barrel will be damaged,it is common that there will be scratch on the surface of the  honed tube , some customers will ignore these scratches, this to us is not responsible for the cylinder, when a small scratches in the cylinder,we usually take some tips to deal with them. 1.First,  to clean up the oil on the surface of our hydraulic cylinder barrel, then we will use the grinder machine to the surface treatment of the scratched part of our cylinder, at this time we have to grind the surface of the cylinder wall out of swallowtail groove. Although we have cleaned our cylinder at the beginning, at this time we need to clean the cylinder barrel further. At this time, we use anhydrous ethanol to clean the surface of the scratch repair of honed cylinder barrel. 2. We usually use special  repairing adhesive  to solve the scratches on the surface of  hydraulic cylinder barrel ,  before using it, we need t

  Cold rolling refers to the process of hot rolling sheet at room temperature. Although the process of rolling can also raise the temperature of the plate, it is still considered as Cold Rolling. Cold rolling by hot rolling after continuous cold deformation, produce poor mechanical properties and higher hardness, require annealing to restore its mechanical properties.  Cold Rolling product refers to the rolling of flat rolled sheet and bars. Cold rolling is processed further in cold reduction mills at room temperature, where the material is cooled followed by annealing and tempers rolling. This process will improves the surface finish and holds tighter tolerances while cannot reduce the thickness of a work piece. Cold Rolled steel coils and sheets are generally used to make products that do not require bending or simple deformation and stretching. In the term of finishing treatment, cold drawing is referred as a kinds of cold finishing process which increases 40%-60% of the yield and t

   Ck45  seamless steel tube  is usually used to produce honed tubes.CK45 is high quality carbon structural steel, carbon content is 0.42-0.50%, with 610 Mpa tensile strength , and yield point  is 360 Mpa;This material is also more common than other superior carbon steels. Steel 45: average carbon content is 0.42-0.50%, average silicon content is 0.17-0.37%, average manganese content is 0.50-0.80%, average sulfur content is <= 0.035%, average phosphorus content is <= 0.035 %, The average chromium content is <= 0.25%, the average nickel content is <= 0.2545, and the carbon content of steel is about 0.45%. Recommended heat treatment temperature Tensile strength: not less than 600Mpa; Yield strength: not less than 355Mpa; Elongation: 10%; Shrinkage: 40%; Impact energy: 39J; Steel delivery state hardness: not greater than unheated: 229HBS; annealed steel: 197HBS; Datong is a professional manufacturer in CK45 seamless steel tube,we also supply chrome plated tubes,  honed tubes  

Ck45  induction hardened chrome plated bar  is used extensively by the hydraulic and pneumatic industries, for those applications utilising its high surface hardness and excellent resistance to surface impact. Induction hardened: Induction hardened is a form of heat treatment in which a metal part is heated by induction heating. Induction hardening of piston rods in hydraulic cylinders is performed in order to increase the resistance to damage from external impact in applications where there is risk for them. The hardness after this heat treatment is HRC 40 to 45. Surface hardness:  min. 900 HV0.1 (66 HRC) the surface hardness in the induction-hardened zone immediately beneath the chrome layer is min. 55 HRC (HV 595). Hardening depth:  0.75 – 4.0mm depending on the diameter. Other hardening depths can be supplied by special arrangement. Corrosion resistance:  min. 120 – 200 hours in Neutral Salt Spray testing according to ISO 9227 standard or its equivalents, combined with evaluation a