The push elbow has a specific expansion rate. According to theoretical calculations, the general expansion ratio ranges from 33% to 35%, and it is then pushed back. For example, when dealing with a short radius of 219 mm, the diameter expansion ratio can reach up to 50%. Once the raw materials are selected, they are cut according to the specifications of the curved elbow, taking into account the radius of curvature. A 90° elbow, for instance, can be calculated using the long material length. This calculation is based on theory, and once the dimensions are confirmed, the material is cut to a fixed length. Finally, the tube is hot pushed through a specialized process. The pushing mechanism may look familiar to many. In reality, it's quite straightforward. It involves a horn-shaped core or mandrel that expands and contracts during the process. The pushing action essentially bends the expanding tube along the mandrel. A support structure is placed at the rear, and the cut pipe section is inserted into the mandrel. A rear frame holds the mandrel in place, while a small trolley moves forward—some are powered by hydraulic pressure, others by mechanical transmission, such as a screw drive. As the trolley advances, it pushes the tube along the mandrel. An induction coil is positioned around the mandrel, heating the tube as it moves. Once heated, the trolley continues pushing, shaping the elbow in a hot state. However, if not handled properly, some elbows can become distorted, which is unacceptable. After the initial push, the front end of the elbow often has a larger outer diameter, so it goes through a shaping die. This die is essentially a press with two semi-circular molds on either side. Through this process, the outer diameter meets the required size for the finished product. GB elbow | flange blind plate | push elbow | welding elbow professional manufacturer Cangzhou Xin Dingsheng Pipeline Complete Equipment Manufacturing Co., Ltd., service hotline.
A hydraulic jack cylinder is a component of a hydraulic jack system that is responsible for generating the lifting force.
It consists of a cylindrical tube with a piston inside it. The piston is connected to a rod that extends out of the cylinder.
When hydraulic pressure is applied to the cylinder, it pushes the piston and rod forward, creating a lifting force.
This force can be used to lift heavy objects or vehicles. Hydraulic jack cylinders are commonly used in automotive repair shops,
construction sites, and other applications where heavy lifting is required.
Hydraulic Jack Cylinder,Hydraulic Jack,Hollow Hydraulic Jack,Hollow Plunger Hydraulic Cylinder
Yantai Dongyue Hydraulic Technology Co., Ltd , https://www.deeleap.com