Working mode of box-type multi-purpose furnace

2023-04-17 17:50:18

Working mode of box-type Multi-purpose furnace

The Box-type multi-purpose furnace production line is mainly used for gas carburizing direct quenching of workpieces, gas carburizing quenching with intermediate cooling, gas carburizing protective gas cooling, re-carburizing, carburizing and nitriding co-carburizing and quenching, nitriding co-carburizing (soft nitriding), isothermal quenching, bright normalizing, bright annealing, brazing and sintering.

multi-purpose furnace production line

Working mode of box-type multi-purpose furnace

The workpieces are prepared on the material table and sent into the degreasing furnace for preheating by the loading and unloading trolley. Then, they are sent to the multi-purpose sealed box furnace to complete processes such as carburizing and quenching. It is cleaned by the Cleaning machine and sent back to the furnace to complete the tempering process.

The composition method of the box-type multi-purpose furnace

The components of the box-type multi-purpose furnace production line include: multi-purpose sealed box-type furnace, Tempering furnace, degreasing furnace, cleaning machine, loading and unloading trolley, material preparation table, etc. Different combinations and arrangements can be made according to the user's requirements to form a flexible and adaptable Heat treatment production line.

If the metallographic grade of the products in 2 to 3 consecutive furnaces is slightly higher than the technical requirements, you can open the front and middle doors, release air into the furnace to burn for 5 to 10 minutes, then close the door and check if the furnace temperature is higher than the set temperature. The higher the temperature, the more severe the carbon deposits. Then continue burning until the temperature difference from the set value is less than 10℃. Close the door to retain carbon and continue working. When replacing the oxygen probe, you can determine the carbon once. At other times, it is not necessary. Just directly observe the product's metallographic structure. Once there is a slight difference in the metallographic structure, pay attention to tracking and observing, and make timely adjustments. As long as you grasp the product's metallographic structure well, you will have the lifeline of product quality.

The furnace body is equipped with multiple layers of furnace beds, which are divided from top to bottom into drying, preheating, calcination and cooling zones. The vertical rotating shaft at the center of the furnace chamber drives the rake arms and rake teeth of each layer of the furnace bed to rotate. The materials are fed in through the feeding holes around the top of the furnace. The discharge ports of each odd-numbered furnace bed inside the furnace are located at the center, while several discharge ports of the even-numbered furnace beds are evenly distributed around the periphery. Due to the different orientations of the odd and even number of rake teeth on the furnace bed, under the flipping and pushing effect of the rake teeth, the materials fall layer by layer from top to bottom in an "S" shape and meet the hot flue gas from the combustion chamber in countercurrent for heat exchange.

The commonly used Multi-purpose furnace heat treatment includes resistance furnaces, gas furnaces and oil furnaces. From the perspective of labor safety and hygiene, heat treatment manufacturers. Resistance furnaces are easy to control and have relatively better hygiene conditions.