Heat treatment production line for aluminum alloy die casting product

Abstract

The invention provides a heat treatment production line for an aluminum alloy die casting product. The heat treatment production line comprises a supporting frame, a solid melting furnace arranged on the supporting frame, a solid melting heating system, a lifting mechanism, a quenching pool arranged below the solid melting furnace and located under the ground, an aging furnace, an aging heating system, a first rail extending below the solid melting furnace from interior of the aging furnace and a gantry crane arranged above the first rail. The solid melting furnace comprises a solid melting furnace body with a bottom opening, a heat insulation bottom plate capable of being movably arranged on the supporting frame and a drive device. The lifting mechanism comprises an oil cylinder, a fixing rod connected to the tail end of an oil cylinder stretchable rod, first fixed pulleys and second fixed pulleys arranged above the solid melting furnace body and chains with the start ends fixed to a bracket, and the tail ends of the chains wind around the movable pulleys, the first fixed pulleys and the second fixed pulleys in sequence and penetrate through the solid melting furnace body. The aging furnace comprises an aging furnace body and flow deflectors arranged in the aging furnace body. Solid melting and aging treatment are uniform, the quenching effect is good, an obtained aluminum product is high in quality, and the construction cost is low.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a heat treatment production line for aluminum alloy die-casting products. Background technique [0002] With the lightweight trend in the industrial field, especially in the fields of automobiles and motorcycles, more and more aluminum alloy workpieces have replaced traditional metal parts such as steel. For a long time, the processing of aluminum alloy workpieces has mostly relied on traditional mechanical processing methods, that is, the overall blank is processed through sawing, grinding and other processes. This processing method has many procedures and low efficiency, and the mechanical strength and dimensional accuracy of the workpiece are greatly affected. Therefore, more and more aluminum alloy products are introduced into the die-casting production process. [0003] Die casting is referred to as die casting. It injects molten liquid metal into the injection chamb...

AI Technical Summary

Problems solved by technology

However, aluminum products obtained by casting also have certain defects, such as large internal stress and loose structure, so that it is difficult to meet the requirements in terms of strength and density, so a series of heat treatments are required, such as solid solution , quenching, aging treatment, etc.

[0004] Most of the existing aluminum solid solution devices are placed on the ground, and the workpieces are piled up in the trolley placed on the ground. During the solid solution treatment, the bottom of the trolley is too close to the ground, resulting in insufficient air circulation, so that the workpieces at the bottom of the trolley are solidified. The effect is not ideal; at the same time, the solid solution device and the quenching pool are often far away, and the time for the aluminum alloy workpiece to come out of the solid solution device and enter the quenching pool is too long, causing the temperature to drop too much when it enters the quenching pool, which in turn makes the quenching effect are affected, and ultimately make it difficult for the product to achieve the desired strength and hardness

[0005] At the same time, most of the existing aluminum aging furnaces have low heat utilization rate; and the air circulation effect in the furnace is not ideal, so that the temperature is uneven and difficult to control, which in turn causes uneven hardness of aluminum profiles.

The application document with the publication number CN103556090A discloses an aluminum alloy aging furnace, which is provided with a guide device with an arc-shaped guide surface in the furnace to guide the hot air to the aluminum trolley in the center of the furnace body. The disadvantage is that since the guide surfaces of multiple guide devices are all facing the lower part of the center of the furnace body, the hot air is opposed in the middle of the furnace body, which restricts the downward flow of hot air and makes it difficult to effectively guide the air. As a result, the aging treatment effect of the aluminum material at the bottom of the trolley is not ideal; at the same time, the flow guide device is directly installed on the material truck, which is easy to cause damage to the flow guide device when loading the workpiece

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