Datong Hydraulic

 AISI4130 hollow bar is made of  cold drawn steel tubes of aisi 4130 material or round steel bars, by grinding and precision polishing on the outside diameter of th 4130 round bar and then hard chromed to a certain thickness on the OD. 4130 Chrome hollow bar and 4130 solid  hard chrome bar both very popular components for producing hydraulic cylinder parts especially cylinder shafts. Heat Treatment Of 4130 Hollow Rod 1.Quenched+Tempered(+QT) Quenching and tempering refers to the hardening (Quenching) of 4130 hollow rod materials at temperatures from 800 — 1,100 °C with a subsequent re-heating (Tempering) at temperatures from 540 — 680 °C. Hardening is a heat treatment process that comprises of austenitizing and rapid cooling. the 4130 chrome hollow rod is hard but also brittle. The subsequent high tempering temperature leads to an increased yield and tensile strength as well as to high elongation and toughness values. 2. Normallized (+N) Normal annealing refers to ...

  CK45 Cylinder piston rod is a very important part in hydraulic cylinder working smoothly,hard chrome plating a piece of precision equipment such as a cylinder rod is a painstaking and methodical process. As one of the leading CK45 chrome plated bar suppliers and manufacturers, DTONG   GROUP   has been supplying and exporting CK45 hard chrome bar and hard chrome rod for almost 20 years with high quality & good prices.Imperial sizes & metric sizes available. The Hard Chrome Plating Process: 1. Inspection The  CK45 cylinder chrome rod  is inspected during the initial evaluation to determine the condition prior to the chroming process. An inspector will make note of any signs of corrosion, pitting, marring, damage, cracking or flaking. The presence of any of these conditions will be taken into account during the re-chroming process. 2. Grinding & Stripping Old material on the  hydraulic cylinder rod  must be removed before new chrome can be a...

  The  cylinder barrel tube   before processing the surface will have a lot of hemp point, which is an important factor affecting the quality of honing tubing, to get the quality of the hydraulic oil tubes after quilting, it is necessary to repair these points. So, what are the methods for repairing the surface defects of honing tubes? Increase the amount of cold-drawn deformation Increasing the number of  cold-drawn  deformation and increasing the total deformation can achieve the purpose of reducing the depth of the hemp point and reducing the honing grinding allowance. Preferred hot-rolled tube blanks Cold drawn tubes defects are caused by hot-rolled pipe, so, through the selection of small corrosion degree, uniform wall thickness of the hot-rolled pipe, can reduce the defects of the hemp, improve the yield of the cylinder. Hot-rolled pipe hole defect cleaning g is also relatively low, if the diameter is greater than 50mm, it is best to use mechanical process...