Heat treatment furnace with controllable cooling rate and uniform workpiece surface oxidation

Abstract

The invention discloses a heat treatment furnace with controllable cooling rate and uniform workpiece surface oxidation, the heat treatment furnace comprises a furnace body, a furnace cover is arranged on the furnace body, a heater and a material rack are arranged in the furnace body, and a hearth of the furnace body is connected with a cooling air inlet system.The cooling rate of the temperature in the furnace is adjustable, controllable, uniform in speed and accurate; the surface oxidation degree of the workpiece is uniform, potential safety hazards caused by high temperature are avoided, peripheral materials and operation are safer, the device is particularly suitable for a well type annealing furnace, the heating and cooling requirements of various workpieces can be met, and the surface oxidation degree of the workpiece is uniform; the annealing furnace is particularly used for annealing of TC4 alloy large-piece-weight coil finished products for aviation fasteners, annealing of TC16 alloy wire coil finished products for cold heading and intermediate and finished product annealing treatment of large-piece-weight and large-disc-diameter wires, and further has a good workpiece heat treatment effect.

Description

technical field [0001] The invention relates to the technical field of heating furnaces, in particular to a heat treatment furnace with a controllable cooling rate and uniform surface oxidation of workpieces. Background technique [0002] In the heat treatment furnace industry, the current heat treatment process is similar in the heating and heating process, but in the cooling process of heat treatment, the heat treatment furnaces on the market currently use the furnace cover to naturally cool down. This method is simple, but for In terms of workpiece and production safety in the heat treatment process, there are obvious shortcomings, mainly including: 1. The temperature cooling rate is not controlled, which is greatly affected by the surrounding environment, and the cooling process of the workpiece is quite different; 2. Open the furnace at high temperature When the furnace cover is opened, a large amount of cold air quickly enters the furnace, and the oxidation degree of t...

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Problems solved by technology

[0002] In the heat treatment furnace industry, the current heat treatment process is similar in the heating and heating process, but in the cooling process of heat treatment, the heat treatment furnaces currently on the market use the natural cooling of the furnace cover. This method is simple, but for In terms of workpiece and production safety in the heat treatment process, it has obvious disadvantages, mainly as follows: 1. The temperature cooling rate is not controlled, and it is greatly affected by the surrounding environment, and the workpiece cooling process is quite different; 2. Open the furnace at high temperature A large amount of cold air quickly enters the furnace, and the surface oxidation degree of the workpiece is uneven; 3. After the furnace cover is opened, the heat will overflow everywhere, posing a safety hazard, and it is easy to cause burns to surrounding people and objects.

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