Method for manufacturing hub of high-performance cross-country recreational vehicle

Abstract

The invention discloses a method for manufacturing a hub of a high-performance cross-country recreational vehicle, comprising the following steps of: (1) material preparation: cutting an aluminum alloy rod into blanks; (2) blank cleaning: removing the surface impurities such as oil stains and the like; (3) preheating: preheating the blanks to 400-450 DEG C and preserving the temperature for 1h; (4) rough forging: pre-forging the blanks into cakes under a 800-ton forging machine; (5) mould preheating: preheating the forged moulds to about 300 DEG C; (6) placing the roughly forged blanks into a mould and forging under a 1200-ton forging machine for 2-3 times for the preliminary forming of the blanks; (7) placing the preliminarily formed blanks into a flaring machine for flaring; (8) placing the flared blanks into a horizontal spinning machine for spinning so as to obtain various generatrix-shaped hollow rotator hubs; (9) placing the spun blanks into a numerical control lathe and a processing center for machining; and (10) surface treatment.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, and in particular relates to a method for manufacturing a high-performance off-road modified wheel hub. Background technique [0002] At present, aluminum alloy wheels are usually produced by casting or die-casting. Conventional casting methods, whether it is differential pressure casting, low-pressure casting or gravity casting, are due to the high-speed turbulent movement of the alloy liquid filling and pressing. The gas in the cavity cannot be completely exhausted, resulting in a non-dense structure of the product blank, which is prone to loose, pinch and other casting defects. The manufacturing cost is high, and the energy and raw material consumption is relatively large. The mechanical property of product and the surface quality of casting also can't be satisfactory. [0003] Using forging and spinning forming methods, its precision forming and clean production technology have the fo...

AI Technical Summary

Problems solved by technology

[0002] At present, aluminum alloy wheels are usually produced by casting or die-casting. Conventional casting methods, whether it is differential pressure casting, low-pressure casting or gravity casting, are due to the high-speed turbulent movement of the alloy liquid filling and pressing. The gas in the cavity cannot be exhausted, resulting in the product blank structure is not dense, easy to produce loose, pinch and other casting defects, the manufacturing cost is high, energy and raw material consumption is large