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The role, material, application field and technical parameters of hollow piston rod
Mar 26, 2018

The hollow piston rod belongs to a hollow piston rod with an annular section. Compared with drawing, with the same material and equal cross-sectional area, the hollow piston rod has stronger torsion resistance and can withstand larger external torque. And with the same external torque, this piston rod can also save more material.


1, the role of hollow piston rod:


In the automotive industry, hollow piston rods play a very important role. This is because it not only has the highest potential coordination of natural bending frequency and torsional stiffness at the lowest weight, but also its hollow structure can adjust its natural bending frequency and torsional stiffness to the user's needs. In addition, the application of this type of product also helps to reduce the overall weight of the car.


2, hollow piston rod material:


At present, when making hollow piston rods, the main material used is seamless steel tubes. Seamless steel tube is a round, square, rectangular steel with a hollow section and no joints around it. This material is lighter in weight under the same torsional and torsional strength and belongs to an economical section steel.


3, hollow piston rod application range:


The application of hollow piston rod is quite extensive, including: packaging and printing machinery, woodworking machinery, fitness equipment, electric tools, textile machinery, light industrial machinery, automation equipment and other industrial machinery and related equipment, especially in the automotive industry very common.


4. Main technical parameters of hollow piston rod:

Material: high quality 45# steel;

Outer diameter tolerance: f7-f8;

Surface roughness: Ra0.2-0.4;

Hard chrome thickness: 0.01-0.015mm;

Surface hardness: HV700-1150;

Straightness: 0.05-0.10m/m.http://www.xhychromerod.com/