Cold rolled seamless steel tube
Cold rolled precision seamless steel tube (GB3639-2000) is a kind of seamless steel tube used for precision mechanical structure, hydraulic equipment and the steel sleeve with high precision and good surface.
High precision cold drawn precision steel tube is a new type of steel varieties, and its main characteristic is high precision. There are usually two kinds of production process including two roll mill and three roll mill production, the precision of the three roll mill production of cold rolled seamless steel tube is higher, but the price is relatively a few higher.
Characteristics
Application of high precision cold drawn precision steel tube saves steel, improve processing efficiency with energy saving. High precision cold drawn seamless steel tube has inner and outer diameter size accuracy (tolerances) strictly, both inside and outside surface roughness, roundness, good straight degree and can greatly save the machining time, improve material utilization, at the same time to improve the quality of the product.
Material
20#，45#，16Mn，40Cr，12Cr1MoV, etc.
Production process
Cold rolled precision seamless tube: pipe billet – inspection – cutting – heating – perforation – pipe rolling – cooling – inspection – acid cleaning, lubrication – cold rolling mill rolling – anaerobic treatment – precise straightening – head cutting, chamfering – nondestructive testing – inspection – antirust processing, packaging – pounds, put in storage.
Finish pipe production process
Finishing tube is also called cold rolled precision tube, it is one of the types of seamless steel tube production process. The characteristics of the fine rolling tube:
1. The cold rolled precision tube tolerance dimension precision is high, the product accuracy control in the plus or minus 5 mm, inside and outside wall finish good, surface oxide layer.
2. The comprehensive performance of cold rolled precision tube is good, can bear high pressure, cold bending, flaring, flattening not crack, not wrinkled skin, can do all kinds of complex deformation and mechanical processing.
3. The popularization and application of precision seamless steel pipe steel can save and improve processing efficiency and reduce machining process and equipment investment, can save cost and save machining time, greatly improve the production capacity and material utilization, at the same time to improve product quality, reduce the cost.
Finishing pipe application:
Cold rolled precision tube is widely used in automobiles, motorcycles, electric cars, petrochemical, electric power, shipbuilding, aerospace, bearing, pneumatic components, the low pressure boiler and other fields.