What is the method of producing nickel-based welded pipes?
The production of stainless steel seamless pipes is also quite troublesome, because the market demand for it is still relatively large. If we want to open the market, we need to make our products first. Only with the foundation of superior products can customers feel sincere, so that there will be repeat customers. Every step in the production of stainless steel seamless pipes must be standardized to reduce the unqualified rate of products. Let's talk about the production method of nickel-based welded pipes.
1. If you want to obtain seamless pipes with smaller size and better quality, you need to use cold rolling, cold drawing or a combination of the two. Cold rolling is usually carried out on a two-roll rolling mill, and the steel pipe is rolled in an annular hole composed of a variable-section circular hole groove and a stationary conical head. Cold drawing is usually carried out on a single-chain or double-chain cold drawing machine of 0.5 to 100T.
2. The extrusion method is to place the heated tube blank in a closed extrusion cylinder, and the piercing rod moves with the extrusion rod to extrude the extruded part from a smaller die hole. This method can produce steel pipes with smaller diameters.
3. Hot-rolled seamless stainless steel pipes are generally produced on automatic pipe rolling mills. The solid tube is inspected and surface defects are removed, cut into the required length, centered on the perforated end of the tube, and then sent to the heating furnace for heating and perforated on the perforator. While perforating, it rotates and moves forward continuously. Under the action of the rollers and the head, a cavity is gradually formed inside the tube, which is called a rough tube. It is then sent to the automatic pipe rolling mill for further rolling. The wall thickness is then adjusted by the leveling machine and the diameter is determined by the sizing machine to meet the specification requirements. The use of continuous pipe rolling mills to produce hot-rolled seamless steel pipes is a more advanced method.
