Features and Application of 35CrMo Precision Cold Rolled Seamless Steel Pipe

The general characteristics of general cold-drawn seamless steel pipes are the absence of welding seams and can withstand greater pressures. The product can be very rough cast or cold dial. Precision cold-rolled seamless steel tubes are products that have emerged in recent years, mainly with strict tolerances and roughness on the inner bore and outer wall dimensions.

Cold-drawn or cold-rolled precision seamless steel tubes (GB3639-83) are cold-drawing or cold-rolled precision seamless steel tubes for mechanical structures and hydraulic equipment with high dimensional accuracy and good surface finish. The use of precision seamless steel pipe manufacturing machinery structures or hydraulic equipment, etc., can greatly reduce the mechanical processing time, improve the material utilization, and help improve product quality.

Precision steel pipe is a kind of high-precision steel pipe material processed by cold drawing or cold rolling. Due to the fact that the inner and outer walls of the precision steel pipe are free of oxide layers, withstand high pressure, no leakage, high precision, high gloss, no deformation due to cold bending, no flaring, no flat

cracks, etc., they are mainly used for the production of pneumatic or hydraulic components such as cylinders or The cylinders can be seamless pipes or welded steel pipes (after cold rolling).

Cold-rolled precision steel tubes are widely used in automobiles, motorcycles, electric vehicles, petrochemicals, electric power, ships, aerospace, bearings, pneumatic components, medium and low pressure boilers and other fields. Its main chemical components are iron Fe carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, chromium Cr and so on.

Precision cold drawn features:1. The outer diameter is smaller.2. High precision can be done in small batches 3. Cold drawn (rolled) have high precision and good surface quality.4. The cross-sectional area ofcold drawn is more complicated. 5. The performance of cold-drawn is superior, and seamless steel tubes are comparatively dense.6. The condition of partial wall of cold-drawn seamless steel pipe is reduced.

The internal and external diameter can be controlled within 10 wires according to customer's requirements. It is used for mechanical structure, high dimensional accuracy of hydraulic equipment, and good surface finish, cold drawn or cold rolled precision seamless steel pipe.. The use of precision seamless steel pipe manufacturing machinery structures or hydraulic equipment, etc., can greatly reduce the mechanical processing time, improve the material utilization, and help improve product quality.

The difference between precision steel pipe 1. The main features of seamless steel pipe is no welding seam, can withstand greater pressure. The product can be very rough cast or cold dial.2. Precise steel pipe is a product that has emerged in recent years, mainly with strict tolerances and roughness on the inner hole and outer wall dimensions.3. 5CrMo precision steel pipe is mainly used for bushing accessories, wear parts, machining, etc., there are many heat-resistant, wear-resistant and high-performance processing areas.

Manufacturing process1. Cold drawn: round billet heating piercing start annealing pickling oil coating (copper plating)? multi-pass cold drawing (cold rolling) blank tube? heat treatment? straightening? water pressure Test (flaw detection) mark storage.

2. Finely-zipped : tube blanks (round tubes) - pickling - finishing - cutting - annealing (according to delivery instructions) - baling.