Manufacturing process for thermal phase modified two-wheeled vehicle hub

Abstract

The invention relates to the field of hub manufacturing process, in particular to a manufacturing process for a thermal phase modified two-wheeled vehicle hub. A metallurgical structure of a product is changed through modified heat treatment, so that the performance of the two-wheeled vehicle hub product is improved, and the stress effect bearing is better. The manufacturing process comprises thestep 1 of making a sand core: manufacturing a sand core mold; the step 2 of refining aluminum materials: preparing the aluminum materials with the aluminium mass fraction of 80%-98%, mixing the aluminum materials with modified alloy components comprising 6.5%-7.5% of Si, 0.3%-0.4% of Mg, 0.08%-0.2% of Ti, 0.02%-0.03% of Sr, no more than 0.3% of Fe, no more than 0.1% of Cn and no more than 0.1% ofZn, and adding modified aluminum-titanium-carbon-strontium alloy refiners; performing modified heat treatment solution: continuously placing a hub body on a flow type heat treatment furnace; moving the modified hub onto a machine tool of a hub machining center, and performing series I working procedures; performing cooling and detection upon completion of the series I working procedures, and reentering a series II machining center for machining; and performing surface modified chromizing, purification, spray coating and packaging.

Description

technical field [0001] The invention relates to the field of hub manufacturing technology, in particular to a manufacturing technology of thermal phase modified two-wheel hub. Background technique [0002] The wheel hub is the core component of the vehicle frame system. It is responsible for the direct contact between the vehicle and the ground. Through it and the tires are loaded, the development of modern vehicles is obtained. Modern wheels are basically made of iron alloy and aluminum alloy. Aluminum alloy wheels There are three manufacturing methods: gravity casting, forging, and low pressure precision casting. 1. The gravity casting method uses gravity to pour the aluminum alloy solution into the mold, and after forming, it is processed and polished by a lathe to complete the production. The manufacturing process is relatively simple, no precision casting process is required, the cost is low and the production efficiency is high, but it is easy to produce air bubbles (...

AI Technical Summary

Problems solved by technology

The manufacturing process is relatively simple, no precision casting process is required, the cost is low and the production efficiency is high, but it is easy to produce air bubbles (trachoma), uneven density, and insufficient surface smoothness. electric vehicles, motorcycles, and three-wheeled motorcycles that can also be used for trailers), the existence is particularly prominent, because the manufacturing machinery and cost constraints of small wheel hubs are too severe, so there is a very strong demand to improve the process and produce a kind of wheel that can adapt to the current situation. With equipment and technology, there are more advantages, the production method is closer to large-scale industrial production, and the production process is more environmentally friendly.

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