Automatic feeding medium-frequency diathermic furnace for forging automobile half axle

Abstract

The invention discloses an automatic feeding medium-frequency diathermic furnace for forging an automobile half axle, which comprises a vertical frame (1). A group of medium-frequency power supplies (8) are arranged in the frame, a group of medium-frequency induction furnaces connected with the medium-frequency power supplies are arranged outside the frame, central lines of hearths of the group of medium-frequency induction furnaces are arranged approximately vertically, a feeding mechanism feeds bars to be heated into the hearths along the central lines of the hearths from the bottoms of the hearths, and an electric control device is used for automatically controlling heating temperature and heating time. The bars are vertically fed into the hearths to be heated, the diathermic furnace is controlled to stop heating after needed temperature is reached, and the bars are automatically discharged, so that the drawbacks of short circuit and the like caused by slag falling in the prior art are avoided, quality is ensured, and the labor intensity of workers is reduced.

Description

technical field [0001] The invention belongs to forging heating equipment, in particular to an automatic feeding intermediate frequency diathermy furnace for forging an automobile half shaft. technical background [0002] Throughout my country's domestic half shaft manufacturing enterprises, they are basically small and medium-sized enterprises. Its production management, quality control, technology research and development, etc. are relatively backward. In terms of forging temperature control, most enterprises rely on workers to feed materials manually, heating length, heating temperature are controlled manually, and the center line of the heating furnace is set horizontally. Feeding horizontally will easily cause the scale of the workpiece to fall into the furnace after heating, resulting in open circuit ignition, and the temperature control of the known technology is difficult to guarantee. However, the forging temperature of the half shaft bar has a considerable influen...

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Problems solved by technology

[0003] (1) If the initial forging temperature of forging is too low (under-temperature), the deformation resistance of the metal will increase. After forging, the temperature is too low, which will lead to the second phase transformation and affect the metallographic phase of the half-shaft and then affect the performance of the half-shaft.

[0004] (2) The forging temperature is too high, prone to overheating and overburning

Overheating will easily lead to coarse grains of the half shaft after forging, which will reduce the strength and toughness.

Overburning will directly lead to the scrapping of the half shaft

[0005] (3) If the forging heating time is too long, it is easy to cause serious oxidation and burning of the workpiece

Affects the utilization rate of materials, and is also prone to material waste in subsequent machining processes

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