How to Use Die Forgings

How to use die forgings
For complex shape die forgings, the pre-forging steps of the final die forgings must also be selected, and some die forgings can also be used for regular lamination of blank parts, which simplifies the die forging process and improves the die forgings production efficiency, It should be determined according to the shape and size of the die forging during the application process. According to the shape characteristics of the die forging parts, the die forging parts can be divided into long-axis die forging parts, etc.
The characteristics of today's long-axis die forging types are that the dimensions of the die forging are much larger in one direction than in the other two directions. During the die forging process, the hammering direction is perpendicular to the axial direction of the die forging, and the final die forging Forgings, the metal flows in the plane, that is, along the height and width directions of the die forgings, therefore, the die forgings used are often used for lengthening, and the volume of the metal is redistributed so that the cross-sectional area of the blank corresponds to the corresponding Similar in cross section, forgings, elongation and balancing steps must be used.
At present, a small long-axis die forging must be used. In order to reduce the jaw material and increase productivity, the projection of the die forging on the separation surface is a circle or the length is similar to that of the width die forging. During the die forging process, the direction of the hammer is different from the blank The shaft is the same, and the metal is along the height during the final die forging, it is often used for rough die forgings and attractive surface treatments, for simple shaped die forgings, and for complex shapes of die forgings.
On the premise of ensuring the design strength, die forgings are lighter than cast iron, which reduces the weight of the machine. For example, when a crankshaft with a self-weight of 17 kg is used in an automobile, when the die forging is processed by rolling, according to the crankshaft machining process mold The phenomenon of microcracks appearing in forgings, the deformation mode and deformation, etc., the process of microcracks has been understood, as well as the size of the flash bridge and the amount of flash, and the prevention of crack sources has been studied in many aspects.