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      Taicang Huarui Vacuum Furnace Co., Ltd
      Address: No.1, Nanzhuan Road, Shuangfeng town, Taicang City
      Contact person: Zheng Xinghua
      Mobile: 13285178098
      Contact: Guan Zhanlong
      Mobile: 18606226806
      Contact person: Zheng Shuai
      Mobile: 13285179528
      Tel: 0512-88826556
      Fax: 0512-53630028
      Email: 1306769879@qq.com
      National Service Hotline:
      0512-53630028
      Website: www.emilyhammann.com

      Operation and maintenance of vacuum furnace

      Release date: 2013-06-25 00:00 source: http://www.emilyhammann.com Click:

      Operation and maintenance of vacuum furnace
      Maintenance of vacuum furnace
      1. Furnace body, instrument and control cabinet shall be kept clean frequently.
      2. Inflammables and explosives shall not be stored within 2m around the furnace.
      3. The paint on the shell surface of the furnace body shall be kept intact and painted regularly.
      4. The furnace temperature is higher than 400. 12 hours, do not open the furnace door for a long time.
      5. The operating temperature shall not exceed the maximum rated temperature of the furnace.
      6. Regularly repair and improve the sealing measures of furnace mouth.
      7. Regularly lubricate the mechanical transmission part.
      8. Check whether the graphite heater terminals are clamped regularly and fasten them in time.
      9. The workpieces with corrosive substances and moisture shall not be brought into the furnace for heating.
      10. Once the graphite heater is connected with each other, it shall be separated in time after power failure.
      11. Regularly remove the oxide scale and other impurities left at the bottom of the furnace.
      Maintenance of vacuum furnace
      With the extension of furnace service time, the thermal resistance of the heat shield becomes smaller, and the resistance of the electric heating elements becomes larger due to volatilization, etc., the power should be increased appropriately. In practical production, the power is generally determined by empirical calculation method. Figure 4-15 shows the relationship between the volume of vacuum furnace with graphite felt or refractory fiber felt insulation screen and the heating power. According to the figure, 1300 can be determined. Heating power of vacuum furnace of C. If it is a vacuum furnace with metal heat insulation screen, the heating power found needs to be increased by about 30%.
      The maintenance of the heat shield plays the role of heat insulation and heat preservation in the vacuum furnace, sometimes it also serves as the structural foundation of the fixed heater. Generally, there are four types of heat shield: all metal heat shield, sandwich heat shield, graphite felt heat shield and mixed felt heat shield. The key points of different heat shields should be mastered during maintenance.
      Generally, molybdenum and tungsten materials are used for the 1-2 layers near the electric heating elements, and stainless steel materials are used for the outer layers. The thickness should be as thin as possible (O.2 is generally used for medium and small furnaces). 0.5mm. Large furnace is 0.5-1.omm); the surface of the heat shield shall be processed into a smooth state before assembly to reduce the blackness and enhance the reflection effect. 1300. The number of layers of thermal insulation screen of furnace C is generally 5-6, and the distance between layers is 5-10 mm. The contact area of several layers of radiant panel connection should not be too large to reduce thermal short circuit. The heat shield shall have expansion and contraction, and be made of detachable type, so as to facilitate the next maintenance.

      Related tags: 真空炉

      National Hotline

      0512-53630028
      Address: No.1, Nanzhuan Road, Shuangfeng
      town, Taicang, Suzhou, Jiangsu
      Email: 1306769879@qq.com

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