QTL-200 Gas Shield Annealing Furnace

　　The machine is designed for numerous heat treatment processes for our electric heating elements. According to different tube materials and product specifications, they can be heated under a wide range of temperature with shield gas to achieve various desired effects and properties such as bright annealing, black oxidation, etc. The machine consists of a feeding platform, heating zones, a cooling zone, and a conveyor system with high-heat resistant steel belts that transports tubing into / out of the furnace to complete the process.
Operating process is as follows:
　　The tubing is fed to the feeding platform and conveyed to the pre-heating zone, heating zone, cooling zone by two metal drum rollers that are motivated by variable frequency motors. The system utilizes Ammonia (Nitrogen and Helium gases ) as the shield gas. Under the allowable operating temperature of 700-1150^oC, the heat treatment processing time is controlled and adjusted by changing the speed of the conveyor belt to achieve desired results such as annealing, brazing, black oxidation, etc.
　　The QTL-200 Gas Shield Annealing Furnace offers the following features:

n        Non-stop operating mode. Finished products are continuously brought out from the furnace by a conveying belt. On volume production, the process should keep flowing as long as products are being fed into the feeding platform.

n        High production efficiency and quality stability.

n        Maintain Stainless Steel original color with an additional bright shinny surface after the annealing process.

n        This machine can be widely applied in brazing, annealing, tempering and metallurgy etc for steel and stainless steel products.

n        Annealing time and temperature can be adjusted based on different product materials. The furnace provides wide adjustment range to fulfill different heat treatment requirements.

n        Speed of the conveyor belt is controlled by variable frequency motors thru specially designed transmission gearbox to facilitate smooth and stable conveying speed.

n        Three heating zones with evenly distributed heating power. Independently adjustable temperature is available for three zones.

n        Specially design furnace door to insure adequate supply of shield gas that      helps achieving high annealing quality.