Swaging manufacturing method of light aluminum alloy rim

Abstract

The invention relates to a swaging manufacturing method of a light aluminum alloy rim. The method comprises the following processing steps: (1) baiting; (2) heating; (3) carrying out ring rolling; (4)manufacturing a spinning blank; (5) carrying out hot spinning; (6) carrying out head back hot spinning; (7) carrying out heat treatment; and (8) fine machining the blank into a rim product. The performance indexes of the rim all reach national standards. The method only needs a pair of spinning moulds, i.e. an upper spinning mould and a lower spinning mould for processing, wherein the moulds havesimple structure, easy manufacture and low manufacturing cost. High temperature and high speed hot spinning processing is adopted so as to ensure that the metallographic structure of the rim has uniformity, refined crystalline grain, light weight, thin thickness, mechanical property improvement of the rim, high precision and good quality, and compared with a rim processed by cold spinning, the rim of the invention cannot crack and generate pinholes and has long service life. The blank processed by the method is annular and has high material utilization rate, less waste and processing amount reduction. Meanwhile, the invention provides a new variety for the rims in the car accessory market. Consumers can conveniently replace and adjust the rims of different shapes and types as required atany time without dismantling a tire so as to quickly change the type of the whole tire.

Description

technical field [0001] The invention relates to a forging method, in particular to a forging and spinning manufacturing method for making a light aluminum alloy wheel rim. Background technique [0002] As the key spare parts of the automobile, the wheel hub is a rotating part responsible for multiple functions such as carrying the weight of the vehicle, transmitting power, and cooling the tires. The quality of the wheel hub will directly affect the performance and quality of use of the car. [0003] There are various structures and wheels made of different materials and methods on the market, but compared with traditional steel wheels and cast aluminum wheels, the weight of forged aluminum alloy wheels is only 1 / 2 of that of steel wheels. 1 / 3 of the aluminum wheel, while the tire wear rate of the forged wheel is low, the fuel saving effect is remarkable, the safety is good, the appearance quality is good, and the dimensional accuracy is high. [0004] With the rapid and vig...

AI Technical Summary

Problems solved by technology

[0005] Patent application number 200610050140.5 "forging-spin forming process for forged aluminum alloy wheels" also provides a method for making forged aluminum alloy wheels, but this production method needs to pay more for molds, the cost of molds is high, and the production cost is high. The blanks are cold-spun on the spinning machine. Because the quality of cold-spinning is difficult to guarantee, product cracking is prone to occur, and the product scrap rate is high.

[0006] Patent application No. 200710132396.5 "Forging method and forging die of aluminum alloy wheels for automobiles" provides a method for forging aluminum alloy wheels. The shape of the hub is processed, so the material consumption is large, the waste is much, and the manufacturing cost is high

Images