Honed steel tube is a high- precision steel material by cold drawn or hot rolling process treatment. Because of the precision steel tube inside and outside wall without oxidation layer, under high pressure without leakage, high precision, high finish, cold bending deformation, flaring, flattening without cracks a bit, it is mainly used to produce pneumatic or hydraulic components products, such as a cylinder or cylinder, can be a seamless tube.
Honed steel tube use the rolling processing, it help to closed surface tiny crack and hinder the expansion of the erosion due to the surface with the surface residual compressive stress. So as to improve the surface corrosion resistance and can delay fatigue cracks or expand, and thus improve the fatigue strength of quilted grinding tube. Roll forming, by forming a layer of cold work roll surface hardening layer, reducing the grinding pair of elastic and plastic deformation of the contact surface, thus improve the wearability of quilted grinding tube wall, at the same time avoid the burn caused by grinding. After rolling, the decrease of the surface roughness value can improve the properties.
Rolling processing principle: it is a kind of pressure finishing processing, which is the use of metal in cold plastic deformation characteristics of normal temperature condition and using the rolling tool exert some pressure on the surface, in order to make the surface of metal workpiece produces plastic flow, fill in to the original residual dips in the trough, and workpiece surface roughness value reduced. By rolling the surface layer of metal plastic deformation make the surface cold hardening and grain fine and dense fibrous formation, and formation of residual stress layer, hardness and strength increase, Therefore, this method can be simultaneously achieved finishing and strengthening both purposes, which can not be done by grinding.
Post time: Mar-10-2020