Views: 0 Author: Site Editor Publish Time: 2021-03-26 Origin: Site
The difference between precision seamless steel pipe and seamless steel pipe
1 The main feature of the seamless steel pipe ready after oil is that it has no welded seam and can withstand greater pressure than the version. The product can be a rough cast or cold drawn part.
2. Precision seamless steel pipe is a product that has appeared in recent years, mainly because the inner hole and outer wall dimensions have strict tolerance and roughness.
Features of precision seamless steel pipe
1. The outer diameter is smaller.
2. High precision can be used for small batch production
3. The cold-drawn product has high precision and good surface quality.
4. The horizontal area of the steel pipe is more complicated.
5. The performance of the steel pipe is superior, and the metal is denser.
The difference after hot rolled precision steel pipeHot-rolled precision steel pipes use continuous casting round tube billet slabs or blooming slabs as raw materials, heated by a walking heating furnace, high-pressure water descaling, and then enter the rough rolling mill, and the rough rolling material enters the finishing mill after cutting the head, tail, and , Implementation of computer-controlled rolling, after the final rolling, it will undergo laminar cooling and coiling by a coiler to become a straight hair coil. The head and tail of straight hair curlers are often tongue-shaped and fish-tail-shaped, with poor thickness and width accuracy, and the edges often have defects such as waves, hems, and towers. The coil weight is heavier, and the inner diameter of the steel coil is 760mm. After the straight hair coil is processed by a finishing line such as head-cutting, tail-cutting, trimming, and multi-pass straightening and leveling, then it is cut or re-coiled to become: hot-rolled steel plate, flattened hot-rolled steel coil, longitudinal Cut tape and other products. If the hot-rolled finished coil is pickled to remove the oxide scale and coated with hot-rolled pickled coils.
Precision seamless pipe is a high-precision steel pipe material processed by cold drawing or hot rolling. Because the inner and outer walls of precision steel pipes have no oxide layer, high pressure without leakage, high precision, high smoothness, cold bending without deformation, flaring, flattening without cracks, etc., they are mainly used to produce pneumatic or hydraulic components, such as cylinders or The oil cylinder can be a seamless tube or a welded tube. The chemical composition of precision steel pipes includes carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr.
Common materials: The common materials of precision seamless steel pipes are 10#, 20#, 35#, 45#.
There are many materials that can be produced. As long as steel is not too hard, it can basically be produced according to needs.