Thermoforming
The forming process of hot push elbow adopts special elbow pusher, core mold and heating device to make the blank on the mold move forward under the push of the push rod, and be heated, expanded and bent in motion. The deformation characteristic of hot push elbow is to determine the diameter of tube blank according to the volume change rule of metal material before and after plastic deformation. The diameter of tube blank used is smaller than the elbow diameter, and the deformation process of the blank is controlled by the core die to compress the inner arc. The flow of metal compensates for the thinning of other parts due to the increase in diameter, thus obtaining an elbow with uniform wall thickness.
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