Desk mounted Box type Resistance Furnace Chongqing Ansheng Co., LtdProduct Usage:The muffle furnace is suitable for powder roasting, ceramic sintering, high-temperature experiments, chemical analysis, material processing, ceramics, metallurgy, electronics, glass, plastics, steel, precious metals, gemstones, chemical industry, machinery, refractory materials, new material development, special materials, and building materials quality testing in universities, research institutes, and industrial and mining enterprises. Special specification products can be designed and manufactured according to user needs.

Appearance design:The electric furnace adopts a humanized design, which is beautiful and easy to operate. The outer paint layer uses spray coating and high-temperature baking technology. Has high temperature resistance, oxidation resistance, and acid alkali resistance. Choose a color tone that is resistant to aging and will not fade in appearance due to prolonged use.

Shell design:The electric furnace shell adopts a double-layer forced air cooling structure, which makes the external temperature of the furnace shell close to room temperature when the electric furnace works at high temperatures, avoiding accidental injuries.

Temperature control method:Adopting Yudian's temperature controller: with 30-50 programmable PID self-tuning, automatic heating and cooling, no need for duty. RS-485 communication interface can also be optionally selected (connected to a regular computer to start, stop, pause heating, set heating curve, store heating curve, record historical curve, etc.)

Temperature control system:The electric furnace adopts integrated circuits, module control, and dual circuit protection (such as temperature deviation protection, ultra-high temperature protection, circuit breaker protection, overcurrent protection, overpressure protection, etc.) to ensure stable and reliable operation of the electric furnace.

Heating rate: Heating rate of 30 ℃/minute, recommended 20 ℃/minute.

Furnace material:Using lightweight alumina ceramic fibers, it has excellent insulation effect, light weight, high temperature resistance, resistance to rapid cooling and heating, no cracks, no crystallization, no slag falling, and no need to worry about contaminating the fired products. The energy-saving effect is 60% -80% of that of old-fashioned electric furnaces.

Furnace design:The furnace adopts a stepped assembly structure that integrates the laws of mechanics, effectively ensuring uniform force distribution during the heating process, preventing the loss of heat energy, and extending the service life of the furnace.

Warranty period:The electric stove comes with a 12-month free warranty. If the heating element and cooling fan are naturally damaged within 3 months, they will be replaced free of charge.

Accessories: Standard accessories: 1 crucible clamp, 1 pair of high-temperature gloves. One copy of the user manual. Optional accessories: LCD touch screen control, air inlet and exhaust chimney configuration, paperless recorder, remote communication control system.

Desk mounted Box type Resistance Furnace Chongqing Ansheng Co., LtdSpecification parameters:

Furnace specifications:

specialThe furnace size can be customized according to customer requirements!

Key points to understand before using the purchased muffle furnaceusemuffle furnaceThe main purpose is to protect the workpiece from the influence of combustion products. Another purpose is to eliminate the non-uniformity of temperature on the "combustion side" of the muffle wall in industrial furnaces. If a muffle is used solely for temperature uniformity, its top is often made open, which is called a semi muffle. But a typical muffle furnace surrounds the entire circumference of the workpiece. Some muffle furnaces are used to surround the combustion gas, and these muffles are usually tubes called radiation tubes. The heating capacity of a muffle furnace that surrounds the entire workpiece is determined by the surface area of the workpiece, the blackness of the workpiece, and the condition of the muffle inner wall (temperature, area, blackness). But in the case where these variables are the same as each other, the heating capacity of the muffle is still slightly smaller than that of a direct combustion furnace (with the same wall temperature), because the combustion products are hotter than the furnace wall, and there are no combustion products inside the muffle.
For a muffle that surrounds the entire workpiece, attention must be paid to the following situation: the muffle wall has thermal resistance, so the inner side of the muffle wall is colder than the outer side. Also, because the muffle is a radiation screen located between the furnace wall and the workpiece, this radiation screen can reduce the heat transfer (referring to solid radiation heat transfer) by half, so the outer side of the muffle wall is colder than the refractory material of the furnace wall around it. This can be proven by the following reasoning: Let the area with a temperature of radiate towards an area w of the same size with a temperature of r2, So the hourly heat transfer Q=(7V-7V). If there is an extremely thin wall between these two areas, it will quickly reach an intermediate temperature to maintain temperature balance.
muffle furnaceThe heating capacity is also limited by the strength and lifespan of the muffle wall. The temperature drop through the muffle wall should be equal to x0.025=126 ° C. Obviously, if the thickness of the muffle wall is 50 millimeters, the temperature drop should be 252 ° C; If the thickness of the muffle wall is 6 millimeters, the temperature drop will only be 30 ° C. If the product of the kilocalorie breakage transmitted per hour per square meter of the wall surface and the thickness (in millimeters) exceeds a certain value, the refractory clay muffle will inevitably crack. If muffle is refined from carefully selected materials, these values can reach around 135600; If it is made from inferior materials, the value will be as low as 33900- Given the current example, it can be said that high-quality muffles can have a thickness of up to millimeters; And for low-quality muffles, their thickness can only be millimeters, otherwise cracking will occur.