What are the advantages of precision steel pipes?
Date:2023-02-09View:441Tags:precision steel pipe
1. Fine drawing
Cold drawing is to draw the metal pipe with a cold drawing machine without heating. The advantage is that it does not need to be carried out at high temperature. The disadvantage is that the residual stress is large, and it cannot be drawn too long. Cold drawing can improve toughness and tensile strength obtain better mechanical properties. Cold drawn seamless steel pipe process: round tube blank→heating→perforation→heading→annealing→pickling→multi-pass cold drawing→semi-finished pipe→heat treatment→straightening→hydraulic test (flaw detection)→marking→warehousing.
The difference between cold drawing and cold drawing: Cold drawing and cold drawing are two different methods of metal cold processing, and the two are not the same concept. Cold drawing refers to the method of applying tension at both ends of the metal material to cause the material to produce tensile deformation; cold drawing refers to the method of applying a pulling force at one end of the material to make the material pull out through a mold hole, and the hole diameter of the mold should be larger The diameter of the material is smaller. The cold drawing process causes the material to have extrusion deformation in addition to the tensile deformation, and the cold drawing process is generally carried out on a special cold drawing machine. Materials that have been cold drawn have better properties than those that have been cold drawn. Main application: For automobiles, motorcycles, refrigeration equipment, hydraulic parts, pneumatic cylinders, and other customers who have high requirements for steel pipe precision, smoothness, cleanliness, and mechanical properties.
2. Finish rolling: Finish rolling pipe is also called cold rolling precision steel pipe, which is a production process of seamless steel pipe. Features of finish-rolled tubes: (1) Cold-rolled precision steel tubes have high tolerance and dimensional accuracy, and the product precision is controlled at ±0.05mm. The inner and outer walls are smooth, and there is no oxide layer on the surface. (2) The comprehensive performance of cold-rolled precision steel pipe is excellent, it can withstand high pressure, cold bending, flaring, flattening without cracking, no wrinkling, and can do various complex deformation and mechanical processing. (3) The promotion and application of precision seamless pipes can save steel, improve processing efficiency, reduce processing procedures and equipment investment, save costs and greatly save machining hours, increase production capacity and material utilization, and help improve product quality. cut costs. Application of precision-rolled tubes: Cold-rolled precision steel tubes are widely used in automobiles, motorcycles, electric vehicles, pneumatic cylinders, petrochemicals, electric power, ships, aerospace, bearings, pneumatic components, medium and low pressure boilers and other fields.
