Anbao Hydraulic

  A hydraulic cylinder is a piston that slides within a cylindrical body. A rod attached to the piston passes through a seal at the end of the cylindrical body and moves in and out to do useful work. The Piston rods on most hydraulic cylinders are highly polished plated steel. They must be uniformly smooth to provide a good seal with the cylinder body. A common problem with hydraulic cylinders is rust and pitting of the cylinder rods. If equipment that incorporates hydraulic cylinders is stored outside with the cylinder rods extended, the rods are exposed to weathering. Eventually, the rods will begin to show specks of rust that develop into pits. Once rusting and pitting occur, the rod will destroy the cylinder seal the next time it is activated. Once pitted, it is virtually impossible to restore a cylinder rod to an acceptably smooth condition through repolishing. This problem of cylinder-rod pitting is most common with hydraulic cylinders on equipment that is both stored outside

  Inspection of geometric dimensions and shape of seamless steel pipes 1. Steel pipe wall thickness inspection: micrometer, ultrasonic thickness gauge, no less than 8 points on both ends and record. 2. Inspection of the outer diameter and ellipticity of the steel pipe: caliper gauge, vernier caliper ring gauge, and the maximum and minimum points are measured. 3. Steel tube length check: steel tape measure, manual and automatic length measurement. 4. Checking the bend of steel pipe: ruler, horizontal ruler (1m), ruler and thin line measure the bend of every meter and bend of every meter. 5. Check the angle and blunt edge of the end face of the steel pipe: square ruler, card board. Steel pipe surface quality inspection: 1. Artificial visual inspection: lighting conditions, standards, experience, logo, steel pipe rotation. 2. Non-destructive flaw detection: ultrasonic flaw detection UT, eddy current flaw detection ET, magnetic particle MT and magnetic flux leakage flaw detection, electrom

42CrMo4  (EN 10083-3)   is the most commonly used quenched and tempered steel because of its high property/cost relationship. It has high hardenability, good heat resistance, excellent forging and machine tool cutting. Surface hardening or nitriding can improve wear resistance and fatigue strength. Hardened, tempered and nitrided gears can be substituted for surface hardened and hardened gears if they do not yield to excessive pressure. Anbao Group  specialized in manufacturing 42CrMo4 hard chrome bar,  cold drawn seamless steel pipe , we have more than 23 years experience in manufacturing, we also supply  honed cylinder tube  and  chrome piston rod , any needs please  contact us

1045 hard chrome plated bar  is used extensively by the hydraulic and pneumatic industries, and is employed by other industry sectors for a wide range of applications.1045 is a medium tensile carbon steel supplied in the cold drawn or turned, precision ground, polished, chrome plated and final polished condition, with a typical base metal tensile strength of 670 – 800 Mpa, plus a typical hard chrome plated surface hardness of HV 1000 – 1150. Characterized by an extremely smooth surface finish with excellent wear and corrosion resistance, coupled with a base material giving good strength and impact properties, plus good machinability and reasonable weldability. Typical applications are: Agricultural Equipment, Compressors, Car Jacks and other Transport Lifting equipment, Food Processing Equipment, Hoists, Mining and other Earth Moving Equipment, Machine Tools, Mechanical Tools and Equipment, Rods and Shafts (Various), Waste Disposal Transport and Equipment etc.   Machining 1045 hard chr