Characteristics of hot push pipe elbow

　　The bull horn core rod type hot push pipe elbow has a bending radius of R=(1-2) D (R is the bending radius, D is the diameter of the pipe elbow). The core rod type hot push bending process has the following advantages:

　　(1) The process is simple and the production rate is high, which can meet the requirements of mass production.

　　(2) This process can prevent the uneven thickness of the bent pipe wall caused by the thinning of the convex edge of the pipe wall and the thickening of the concave edge of the pipe wall under pressure during the traditional bending process.

　　(3) By using this process, large radius, thick wall (t/D ≥ 0.015) pipe elbow with uniform wall thickness can be produced, where t is the thickness and D is the diameter of the pipe blank, which cannot be achieved by other bending processes.

　　(4) Due to the axial pressure during the push bending process, the metal arrangement is fine and dense, resulting in good mechanical properties of the obtained pipe elbow. Some raw materials for pipes require hot bending to obtain good mechanical properties

　　Performance;

　　(5) By using this process, multiple curved pipes with the same diameter, such as 300, 45%, 60%, and 900, can be pushed out in one go on the same ox horn core rod, resulting in high production efficiency.

　　(6) Due to agile heating and high thermal efficiency, there is less oxide skin on the surface of the pipe elbow.

　　The defect is that it cannot form pipe elbow with a straight section, and the medium frequency induction heating unit consumes a lot of power and equipment investment is also large. The shape of the ox horn core rod is relatively disordered, and there is no accurate calculation formula, making it difficult to manufacture and requiring

　　A dedicated horizontal pushing machine is required.