Application scope and precautions of trolley furnace

Trolley furnace is a kind of thermal equipment widely used in industrial heating treatment, with the characteristics of high energy efficiency, energy saving, and convenient operation. It is mainly used for heating and treating large and medium-sized workpieces. In this article, Hutt Xiaobian mainly introduces the application scope of trolley furnace and its precautions for use.

Application scope of trolley furnace

1. Metal heat treatment

Trolley furnace is widely used in metal heat treatment processes, such as annealing, quenching, tempering, etc. Annealing is to heat the metal to a certain temperature and then cool it slowly to eliminate internal stress and improve toughness. Quenching is to heat the metal above the critical temperature and then cool it rapidly to increase hardness and wear resistance. Tempering is to heat the quenched metal to a certain temperature and then cool it slowly to reduce brittleness. Trolley furnace ensures that metal parts meet the expected mechanical properties and process requirements by accurately controlling temperature and time.

2. Foundry industry

In the foundry industry, trolley furnaces are used for preheating and heat treatment of castings. Castings will produce internal stress and micro defects during the casting process, which will affect their mechanical properties and service life. Through the heating treatment of the trolley furnace, the internal stress of the casting can be eliminated, its organizational structure can be improved, and its strength and durability can be improved.

3. Automobile Industry

In the automobile industry, trolley furnaces are used for heat treatment of automobile parts, such as gears, bearings, crankshafts, etc. Through the heating treatment of the trolley furnace, the hardness and wear resistance of these parts can be improved and their service life can be extended. In addition, the trolley furnace is also used for preheating and annealing of automobile molds to improve the service life and molding accuracy of the mold. For example, the heat treatment process of automobile transmission gears requires heating in a trolley furnace to obtain the required hardness and wear resistance. 

Precautions for the application of trolley furnaces

1. Operational safety

When operating a trolley furnace, you must strictly abide by the safety operating procedures and wear protective equipment such as gloves, protective glasses, etc. Operators should undergo professional training and be familiar with the working principle and operation methods of the equipment. Especially when handling high-temperature workpieces, care should be taken to prevent burns and fire accidents. The area around the trolley furnace should be kept clean and ventilated to avoid flammable items.

2. Equipment maintenance

Regular maintenance is the key to ensuring the normal operation of the trolley furnace. The working conditions of the furnace body, heating elements, control system and trolley should be checked regularly, and the oxide scale and impurities in the furnace should be cleaned in time. Lubricate the furnace door seals and transmission mechanisms to ensure their flexibility and sealing performance. Before each use, the running track and electrical circuit of the trolley should be checked to ensure that they are intact.

3. Temperature control

The temperature control of the trolley furnace directly affects the effect of the heat treatment process. The operator should set the appropriate heating temperature and time according to the material and process requirements of the workpiece. During the heating process, the temperature in the furnace should be monitored in real time to prevent the temperature from being too high or too low. Use thermocouples or infrared thermometers to measure the temperature to ensure the accuracy of temperature control.

4. Loading and unloading

When loading and unloading workpieces, collisions between workpieces and between workpieces and furnace walls should be avoided to prevent damage to workpieces and equipment. Large workpieces should be placed reasonably to keep the hot air in the furnace circulating to ensure uniform heating. During loading and unloading, attention should be paid to the smooth operation of the trolley to prevent the workpiece from slipping and colliding.

In short, the trolley furnace is widely used and provides great convenience for industrial production. We need to give full play to the advantages of the trolley furnace through scientific and reasonable operation and management to improve the heat treatment effect and production efficiency of workpieces.