Aluminum ring forging and spinning manufacture method

Abstract

The invention provides a method for casting-forging and spinning manufacture of an aluminum ring. The method comprises the following steps: 1, aluminum alloy material is prepared, and the aluminum alloy material contains silicon and magnesium; 2. the aluminum alloy material is cast into an aluminum ring rough blank which is provided with a wheel disc with a plurality of coarse rib arms and a wheel ring wall which is connected with the end edge of the wheel disc and circles around a shaft line; 3, the wheel disc of the aluminum ring rough blank is cast, so that the coarse rib arms are formed to rib arms respectively; 4, the aluminum ring rough blank is subjected to solution heat treatment; 5, the wheel ring wall of the aluminum ring rough blank is subjected to rotary extrusion, so that a metastomium circling around the shaft line is formed on the wheel ring wall; and 6, the aluminum ring rough blank is subjected to aging heat treatment. The method has the advantages of lowering investment cost of equipment, shortening labor hours consumed in casting and machining, and being capable of manufacturing large-sized aluminum rings and aluminum rings with flexible appearance.

Description

technical field [0001] The invention relates to an automobile aluminum ring, in particular to a casting, forging and spinning manufacturing method of the aluminum ring. Background technique [0002] Such as figure 1 As shown, the forging process of the existing rim generally includes the following steps: [0003] 1. Extrude a rod 1. [0004] 2. Using a plurality of forging machines (not shown in the figure) to cooperate with a plurality of different forging dies 2, 3, 4 to carry out multi-pass forging, so that the bar 1 is gradually formed into a rim rough blank 5. [0005] 3. Heat treatment of the rough rim 5 . [0006] 4. Utilize a spinning device 6 to spin the rough rim 5 so that the rough rim 5 is formed into a trunk portion 501 . [0007] 5. Milling the solid disc surface of the rough rim 5 by machining (about 4 hours), and turning the rim wall of the rough rim 5 (about 3-5 minutes), The rough rim 5 is shaped into a finished rim 7 with multiple rib arms 701 . [0...

AI Technical Summary

Problems solved by technology

[0009] 1. This kind of process is to directly forge the solid bar 1 into the rim rough blank 5. Therefore, this kind of process needs to go through multiple forging passes to form the hollow rim rough blank 5. Forging, this kind of process needs to use a forging machine and a set of forging dies to forge and press the forging blank, and because the disk surface of the rim rough blank 5 is solid and impermeable, the final forging machine is more compact It needs to be a large-scale forging machine that can produce the maximum output. In addition, the forging blanks between each pass also need to be repeatedly heated by multiple heating furnaces and transported by conveying equipment. It can be seen that this kind of process sheet is in the forging step. That is, a large amount of manufacturing equipment is required, which will greatly increase the investment cost of equipment

[0010] 2. This kind of manufacturing process requires multiple forgings to form the rough rim 5, and finally it is necessary to mill out the hollow shape of the rib arm of the rough rim 5 by machining (generally it takes 4 hours), thus significantly increasing the required machining man-hours

[0011] 3. When forming large-size rims, if the deformation of the material is too large, it will often exceed the allowable deformation of the material. Therefore, this process requires more passes of heating, softening and forging to form large-size wheels. rims, making it difficult to form large-sized rims

[0012] 4. The forged disk surface of the rim rough blank 5 after forging is generally solid flat or arc-shaped. Therefore, this kind of manufacturing process needs to mill the disk surface of the rim rough blank 5 by mechanical processing, so as to process it. The rib arm 701 described above will cause waste of material in milling. However, if it is intended to form rib arms of various patterns by this forging process, the shape of the disk surface is too complicated, so that the material will flow during the forging process. Due to the limitation of the mold cavity, it will cause insufficient filling defects and cannot be formed, or the forming load must be increased to overcome the plight of the material flow being restricted by the mold cavity. Therefore, this process will instead require a larger forging machine to complete the forging. increase equipment cost

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