| Intermediate frequency elbow machine production elbow process and processing principle
The forming of the hot pushing medium frequency elbow machine is designed according to the law that the volume of metal material is invariable during plastic deformation, that is, the volume of the tube billet is equal to the volume of the elbow.Several tube billets are sheeted on the mandrel in turn, and then the extrusion propulsion device is started. The tube billets are pushed in turn like the bending mandrel, and the front end of the tube billet is sent to the beginning of the bending mandrel, and the deformation process begins.With the push to the outlet end along the axis of the bending mandrel, the diameter expansion and bending deformation are gradually realized. When the tail of the tube billet is separated from the outlet face of the bending mandrel, the forming of the whole elbow has been completed.In the process of pushing and bending, with the increase of diameter expansion, the thrust force makes the pipe billet carry out radial compensation continuously, so the wall thickness of the finished elbow is not thinner than that of the pipe billet, and the inner and outer arc wall thickness is basically the same.Heated medium frequency elbow machine is mainly used for carbon steel and alloy steel elbow forming, if you need the product is stainless steel elbow, please choose cold push elbow machine.
The medium frequency elbow machine has the unique advantages of high geometric accuracy, uniform wall thickness, stable structure size, good mechanical properties and high productivity.
The basic processing principle of elbow machine: is a core head with a certain geometric shape and size, namely horn core head as the mold, in the back of the welding has a considerable length of core rod, the length of the core rod, by each working cycle, the length of the pushing tube billet size and the number of pieces.Before pushing, the good material to be pushed in advance of the tube billet, from the end of the core rod into the core rod, and then sent through the push plate, push system, push plate will slowly forward the tube billet, when the front end of the tube billet began to enter the heating ring position, immediately heating.At this point, the pushed tube billet starts thermoplastic deformation, that is, bending deformation is generated along with diameter expansion deformation. This deformation process continues until the elbow is completely separated from the core, and the elbow has been pushed into shape.
The elbow machine is divided into medium frequency elbow machine and cold push elbow machine. The medium frequency elbow machine is mainly made of carbon steel, alloy steel, etc.Medium frequency heating elbow machine is mainly used to produce various diameter and wall thickness of elbow pipe fittings with curvature radius of 1-2.5D.With the development of the steel pipe deep adding technology, the product has been improved in all aspects, the equipment has been integrated beyond the stress line cone die diameter expansion, digital control medium frequency induction heating, the application of no back pressure energy consumption hydraulic transmission and other technologies.
Cold push bend machine is mainly the production of material is made of stainless steel pipe fittings, pushing a 90 - degree bend of the special equipment, molding method for side ejector push straight in the main mode of system on the core rod, and is equipped with automatic stripping device, took off from the mandrel, the elbow electrical system adopts PLC control, hydraulic system adopts cartridge valve, convenient maintenance, simple operation, high production efficiency.The above is the analysis of the elbow machine made by the company, hoping to help more users.
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