Flange Free Forgings

Flange free forging Product introduction Most flange forgings are large and medium-sized ring parts. Therefore, free form is the main blank making method. Free process mainly includes cutting, heating, roughing, punching, core shaft drawing, leveling, core shaft hole expanding, and other basic processes after free time.Blanking refers to cutting a section of flange material from profile bar material. · heating is to raise the billet temperature to the fabrication level and improve its performance.The thick billet is small in height and larger in diameter.Punch the center hole of blank, change the ring part;The wall thickness and height of the ring billet were changed by the drawing length of the mandrel.Core shaft reaming makes the inner diameter of ring blank larger and the wall thickness thinner. Product parameters The tools are simple, versatile, and the production preparation cycle is short.Free forging quality range can be made of less than one kilogram to 2, three hundred tons, for large forging, free forging processing method, which makes the free forging has a special important role in the manufacture of heavy machinery, such as turbine principal axis, turn more important crankshaft, connecting rod, gear parts are under a lot of at work load, requirement with high mechanical properties, free forging method is often used to produce blank. Product advantage Forging generally adopts hot forging to promote the crystallization and grain refinement, and free forging wholesale, so that the material can achieve z possible strength and consistency, and the variation between pieces z is small.So that forgings generally have high strength, structural integrity, reliability, etc.However, the casting with such defects as segregation, shrinkage, porosity and so on cannot be used in such fields as environmental pollution and heavy industry.The creep kang fatigue strength of the forgings is more than 3 times higher than that of the castings in the free forgings factory under the circumstance of great temperature variation. In free forging, only part of the metal surface is restricted by the tool, the rest is free surface.The advantages of free forging are: strong applicability, flexibility, short production cycle, is the production method of extra-large forging.

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