Stainless steel piston rods are mainly used for hydraulic pneumatic, engineering machinery, automobile manufacturing piston rods, guide columns for plastic machinery, roller shafts for packaging machinery, printing machinery, textile machinery, shafts for conveying machinery, and linear optical shafts for linear motion. . The piston rod is processed by rolling. Since the surface layer has residual compressive stress on the surface, it helps to seal the tiny cracks on the surface and hinders the expansion of erosion.

The piston rod is a connecting part suitable for the work of the piston rod. Most of the piston rods are used in the parts of hydraulic cylinders and cylinders. The piston rod is a moving part with frequent movement and high technical standards.

The production conditions of the piston rod are shared below:

1. The main purpose product and workpiece standard of piston rod machinery and equipment.

2. The structural characteristics of the organization at work, load conditions, prescribed speed, size travel arrangements and posture regulations.

3. The pressure of the selected hydraulic transmission system.

4. The actual conditions of raw materials, spare parts and production processes.

5. The piston rod should bear a very large load in the case of multiple pulls as much as possible, and it has very good longitudinal reliability in the case of multiple pressures.

Features introduction

The piston rod is processed by rolling. Since the surface layer has residual compressive stress on the surface, it helps to seal the tiny cracks on the surface and hinders the expansion of erosion.

Therefore, the corrosion resistance of the surface can be improved, and the generation or expansion of fatigue cracks can be delayed, thereby improving the fatigue strength of the cylinder rod. Through roll forming, a cold work hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, thereby improving the wear resistance of the surface of the cylinder rod and avoiding burns caused by grinding. After rolling, the reduction of surface roughness value can improve the fit properties. At the same time, the friction damage to the seal ring or the seal when the cylinder rod and piston moves is reduced, and the overall service life of the oil cylinder is improved. The rolling process is a high-efficiency and high-quality process measure, and the brand-cut rolling head (45 steel seamless steel pipe) is an example to prove the rolling effect. After rolling, the surface roughness of the cylinder rod is reduced from Ra3.2~6.3um to Ra0.4~0.8um before rolling, the surface hardness of the cylinder rod is increased by about 30%, and the surface fatigue strength of the cylinder rod is increased by 25%. The service life of the oil cylinder is increased by 2 to 3 times, and the rolling process is about 15 times more efficient than the grinding process. The above data shows that the rolling process is efficient and can greatly improve the surface quality of the cylinder rod.