The pre-evacuated well type tempering furnace is mainly suitable for the bright annealing and tempering of ferrous and non-ferrous metal wire strips and tubes, mechanical parts, electronic components, tooling and measuring tools. After treatment, the surface of the product is smooth, non-oxidized and decarburized.
Features of pre-evacuated well type tempering furnace: various temperature tempering according to different materials and processes;
Horizontal single room, suitable for periodic operations; positive pressure air circulation of inert gas to achieve uniform heating and rapid cooling; product formation series, furnace capacity and effective heating to reduce size; intelligent control system, control accuracy High, accurate, adaptable, and greatly improved the level of automation. The vacuum tempering furnace is composed of the main part of the furnace shell, the furnace lining and the heating element, the furnace tank, the vacuum system, and the electric control system. Furnace shell: Welded into square structure with section steel and steel plate.
Inside the furnace shell is a furnace made of a mixture of energy-saving refractory bricks, refractory fiber felts and thermal insulation bricks. The heating element is a 0cr25al5 high-resistance alloy wire wound into a spiral circle. This spiral-shaped heating resistance wire is arranged in the furnace on the two sides On the bricks on the wall. There is a thermocouple temperature sensor on the top of the furnace.
Furnace tank: Welded from 304 stainless steel, the bottom of the furnace tank and the cover are hemispherical heads, and the front part of the furnace body is a double-layer water-cooled sandwich structure. The furnace cover and the furnace tank are sealed by an "o" rubber ring and equipped with a locking device. The furnace tank is provided with a heat shield device.
Vacuum system: It consists of a vacuum pump and corresponding valves. The vacuum valve is an electric control switch through a push button. The vacuum unit is equipped with a charging and venting valve, which can realize vacuum heat treatment or protective atmosphere heat treatment.
Electric control system: It adopts imported digital display temperature controller, equipped with self-adjusting pid function (with 8-segment process temperature program instrument, which can achieve segmented automatic heating or insulation according to the set process program), and the main circuit adopts the current popular ssr solid state relay has the characteristics of low noise, high temperature control accuracy and easy operation. In addition, there are safety measures to automatically cut off the main circuit when the water alarm is triggered, and to automatically cut off the main circuit when the over-temperature alarm is activated. The electric control cabinet is mounted on the right side of the furnace by backpack.