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The one end of the reduction gear blank forging has a long wheel, which makes the forging piece top metal flow intense during the forming process, causing the mold neck to quickly wear and collapse and scrap. Therefore, it should be considered to set up a pre-forging step and pre-forge the wheel.
In this way, the metal flow of the mold neck is small when the forging is formed, and the Changzhou vacuum pump plays a role of reducing wear and prolonging the life of the mold, thereby ensuring stable quality of the forging wheel. The other end spoke of the forging is a narrow groove, so that the corresponding portion of the die needs to be a flange, and the flange first contacts the red iron when forging, and starts to flow inward and outward from here.
Because of its long exposure to red iron, the temperature rises rapidly, the strength is quickly reduced, and the wear collapses quickly, which reduces the quality of the forgings. Therefore, in the process of formulating the process, the end should be placed in the upper mold, because the upper mold is in contact with the red iron for a short time, the temperature rise is slow, and the hot working die steel with better strength is used as the upper mold to prolong its service life. .
According to the above analysis, the corrosion-resistant wear-resistant abrasive slurry pump can determine the forging process as follows: the tire mold is formed on the air hammer. After the pre-forging blank is placed in the final forging cavity, the upper die pressure sleeve mold forms the forging piece, and after the upper die is reset, the lower die rod is used to eject the forging piece through the lower die, and in the forging process, the die structure is easily swollen and rupture. This is because the lower mold wall is thinner, the mold temperature is increased, the strength is lowered rapidly, and the card mold is swollen quickly, which affects the forging die. The neck of the lower model cavity often has circumferential rupture and even overall rupture. In view of insufficient strength of the lower mold, the outer diameter of the lower mold is enlarged and embedded in the sleeve mold, so that the sleeve mold acts as a stress ring of the lower mold to improve the strength of the lower mold. A top piece is placed in the lower mold, and the forging piece is ejected by the lower top rod through the top piece.