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How to repair surface defects of honing pipes
The surface of the honing pipe will have many pits before processing, which is an important factor affecting the quality of the honing pipe. If you want to obtain a good quality hydraulic cylinder pipe after honing, these pits need to be repaired. So, what are the methods to repair surface defects of honing pipes?
1. Increase the amount of cold drawing deformation
Increasing the number of cold drawing deformation passes and increasing the total deformation can achieve the purpose of reducing the depth of pitting and reducing the honing grinding allowance.
2. Prefer hot rolled pipe blanks
The pitting defects of cold-drawn pipes are all caused by hot-rolled pipes. Therefore, by selecting hot-rolled pipes with low corrosion degree and uniform wall thickness, pitting defects can be reduced and the yield rate of the cylinder barrel can be improved.
3. Cleaning of inner hole defects of hot-rolled pipes
Quality is the premise of a product. Only good quality is the basis for customer service. Therefore, perfect repair of surface defects of hydraulic cylinder tubes is our greatest commitment to customers.
Several advantages of honing pipes
1. Improve the surface roughness. The roughness can basically reach about Ra≤0.08μm.
2. Correct roundness, ellipticity can be <0.01mm.
3. Improve surface hardness, eliminate stress deformation, and increase hardness HV≥4°
4. There is a residual stress layer after processing, which increases the fatigue strength by 30%.
5. Improve the quality of fit, reduce wear and extend the service life of parts, but the processing cost of parts will be reduced.
The main products produced by Changzhou Baiquan Hydraulic Machinery Co., Ltd. include: rolled pipes, high-precision cold drawn pipes, honed pipes, piston rods, etc. The products are widely used in high-precision rollers and large-tonnage automobile transmission shafts in engineering, metallurgy, shipbuilding and transportation, mechanical hydraulic cylinders, oil field pumping, submersible pump barrels, textiles, glass, plastics and other industries.
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