Method of preparing coupler yoke frame

Abstract

The invention discloses a method for manufacturing a coupler yoke which includes the following technical steps: selecting a rod material and heating to 1200 to 1500 DEG C; forging and pressing on the heated rod material to lead the rod material to contract diameter and draw out to form a mechanical press forging material; a roll forging pressure of a roll forging machine is 300 to 700 tons; mechanical pressing and forging the forged mechanical press forging material in a die cavity to a platy material; the scrap rubbers generated in a cutting mechanical press forging finally heats the platy material to bend and form. Compared with the prior art, the invention adopts roll forging processing on the forging and pressing of the rod material; the roll forging speed has quickened, one time heating can finish the requirement of deformation dimension and the material fell caused by oxidation on the surface of the rod material is fewer and simultaneously adopting the roll forging can realize automatic operation with no needing of a worker or only one worker; thereby greatly reducing the working intensity of the worker ; adopting the roll forging leads the time for the rod material to be forged into the mechanical press forging material in the roll forging to be greatly shortened; thereby the temperature of the rod material is still in the temperature range of the mechanical press forging, thus saving the heating step before the mechanical press forging and simultaneously reducing the energy consumption compared with a free forging of an air hammer.

Description

technical field [0001] The invention relates to a manufacturing method of a coupler frame, in particular to a manufacturing method of forging and pressing. Background technique [0002] The existing manufacturing method of the hook tail frame is first to heat the bar, and then use an air hammer to carry out free forging to make the bar shrink in diameter and lengthen, then continue to heat the drawn bar, and then use a die machine to forge it into a plate The raw material, the flash generated during the forging process of the shearing machine, is finally heated and bent into shape. In the free forging process after the bar is heated, the bar needs to be struck repeatedly to reach the required size. In each heating and striking, the surface will be oxidized and fall off, which will reduce the utilization rate of the bar. , resulting in waste. At the same time, free forging requires multiple workers to operate, which is labor-intensive, has a high risk factor, and has low pro...

AI Technical Summary

Problems solved by technology

In the free forging process after the bar is heated, the bar needs to be struck repeatedly to reach the required size. In each heating and striking, the surface will be oxidized and fall off, which will reduce the utilization rate of the bar. , causing waste. At the same time, free forging requires multiple workers to operate, which is labor-intensive, has a high risk factor, and has low production efficiency;

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