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the Heat Treatment Process of Aluminum Die Casting Parts

  • Author:Li Xvsi
  • Source:www.xy-global.com
  • Release on:2021-11-11
   The heatment treatment of aluminum die casting part is standardized after quenching and solid solution by equipment, and the heating speed is controlled to keep the alloy at a certain temperature for a certain time and cool at a certain speed to change the microstructure of the alloy.

   Its main purpose is to improve the mechanical properties of aluminum, enhance corrosion resistance, improve processing, can obtain dimensional stability. Fast solution treatment, after the constant temperature time, the workpiece transfer speed within 10 seconds. The furnace is mainly composed of heating furnace body, lifting mechanism, charging trolley, mobile quenching tank and a quenching material rack, temperature action control and other parts. Furnace body is mainly composed of shell, lining, heating element, hot air circulation and diversion device, rack and rack lifting mechanism, bottom door and pneumatic opening device and other parts. The furnace lining is composed of two parts, and the furnace body is a compound structure composed of ultra-light energy saving brick and aluminum silicate fibreboard. The top part of the furnace is movable, using high quality aluminum silicate needled felt as insulation material, the structure design is reasonable, with good insulation performance, low temperature rise of the furnace wall, energy saving and consumption reduction. The heating element is made of 0Cr25AL5 iron chromium alloy, which is spiral and evenly distributed on the silk bricks around the west of the furnace wall to make the temperature in the furnace uniform.

   Inorder to make the uniformity of temperature in the furnace enough to meet the quenching process requirements of aluminum alloy die castings, a powerful centrifugal fan is also set on the top of the furnace body. The centrifugal fan can effectively circulate hot air under the action of the diversion system in the furnace, which is made of high quality heat-resistant stainless steel plate. In order to prevent its deformation in the furnace, the guide plate adopts the hanging installation mode, its structure performance is stable, reliable, equipment long-term work without maintenance.

   The lifting and lifting of the material rack are completed by the hoist set outside the furnace. The hoist system is equipped with double speed drive loading. When the furnace door is opened, the hoist automatically drops quickly, and the material rack full of die castings is quickly quenched into the water. When the material rack is ready to enter the furnace again, the hoist lifts the material rack at a slow speed to effectively prevent the inertia of the motion of the die castings, ensure the smooth operation, and will not damage the sealing device of the furnace mouth and heat preservation materials