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Introduction Of Forging Process Of Truck Wheel
Jul 31, 2017

Forging the wheel of the process is the use of high pressure (most of the pressure of several thousand tons) will have a heated alloy pressed into the hub of the rough embryo (prototype), and then CNC secondary engraving secondary processing, due to withstand high pressure , So the molecules between the alloy will be smaller, the gap will be more fine, the density will be higher, the interaction between the material molecules will be stronger, so the wheels only need less raw materials will be able to achieve sufficient rigidity, the overall weight Lighter As forging the metal is still in a solid state, so the shape can not be as liquid casting is so rich in change, forging the wheel looks mostly simple lines. Through the forging can eliminate the metal in the smelting process caused by casting loose and other defects, optimize the microstructure, and because of the preservation of a complete metal flow line, forging mechanical properties are generally better than the same material castings. Related machinery in the high load, the working conditions of the important parts, in addition to the shape of the available rolling sheet, profiles or welding parts, the use of forgings.


The advantages of forging wheels are: light weight, high rigidity.

1. Forging the production process of the hub

First, "solid forging". The simple structure of the truck aluminum wheels can be produced using solid forging processes.

Second, "the first cast after forging." For more and more beautiful car wheels, a single solid forging is difficult to produce. This requires the use of "cast forging", first with traditional processes such as low pressure casting, gravity casting, metal casting and other processes to produce the basic shape of the rough, and then switch to forging machine for precision forging. For most of the structure is very complex appearance of the wheel is very beautiful, can be used to produce this way out.

Third, "continuous casting and forging". With the "continuous casting and forging" process can produce the structure than the "first cast after forging" more complex, more beautiful pattern forging wheels. Comprehensive mechanical properties than casting a high level of the wheel, the spokes will be more concise fine, more fairy-like beauty.

2. Forging the wheel of the process characteristics

(1) the use of cylindrical design, the larger the diameter of the wheel is to use thick aluminum to forging, and casting aluminum hub using the "raw material" manufacturing method is even more different.

(2) according to the width of the aluminum plate required to cut the number of aluminum.

(3) the first aluminum ingot heated to 400 ° C up and down, then you can prepare forging.

(4) hot forging molding. The higher the tonnage of the forging machine, the lower the working temperature of the ingot, the smaller the grain forged, the higher the toughness.

(5) The high temperature and high pressure molding of the coarse embryo temperature is very high, the surface covered with black carbide, must use the fork to move the machine, and after pickling the surface treatment of coarse embryos already have the prototype of the hub.

(6) in T4 and T6 two kinds of heat treatment machine for a long time after the heat treatment, rough embryo grain will be more compact, the product will improve the toughness.

(7) forged aluminum hub must rely on mechanical processing, the rough embryo processing to the hub shape, so the work includes the tire lip forming, screw hole drilling, disk turning and detailed processing steps.

(8) Before painting, it is necessary to check whether the wheel surface is defective.