The application of the Mesh belt tempering furnace:

This series of mesh belt Tempering furnaces are continuous operation electric furnaces, which are used for tempering, annealing, drying and other treatments of small and medium-sized bearing rings, rollers, self-tapping screws and other parts produced in batches in a protective atmosphere.

The features of the mesh belt tempering furnace:

Good uniformity of furnace temperature:

It adopts heating on both sides and is equipped with stainless steel air guide plates. It uses heat-resistant steel multi-wing fan type fans, which greatly improves the uniformity of furnace temperature. The workpiece heating has no dead points, the average temperature of the furnace is ±5℃, and the control accuracy is ±1℃.

Low energy consumption

The all-fiber needled blanket module has excellent heat insulation effect, low energy storage and small heat loss.

The equipment has a high degree of automation

Fully automatic temperature and action control, complete alarm device and interlock protection device.

A Mesh belt carburizing (normalizing) production line is a continuous heat - treatment equipment used for the carburizing and normalizing of small - and medium - sized parts in a protective atmosphere. Here is a detailed introduction:

Composition

Heating furnace: It is usually divided into 4 zones and heated by means of low - voltage transformers and radiant tubes. The radiant tubes are vertically installed, which prolongs their service life and facilitates maintenance and replacement. There is a muffle in the heating furnace, which divides the heating chamber into 4 independent zones, and each zone is equipped with a powerful circulating fan to ensure a uniform atmosphere. The mesh belt transmission of the heating furnace adopts the muffle - plus - idler - roller synchronous drive mode, which runs smoothly and steadily.

Quenching oil tank or gas rapid - cooling system: The quenching oil tank is used to quench the carburized parts by rapid cooling in oil to obtain the required hardness and strength. The gas rapid - cooling system can also be used to achieve rapid cooling of parts in a gas - filled environment for some processes that require gas quenching.

Tempering furnace: After quenching, the parts are tempered in the tempering furnace to eliminate quenching stress, stabilize the structure, and improve toughness and plasticity. The heater in the tempering furnace is vertically installed, which improves its service life and is easy to maintain and replace. The tempering furnace supports the mesh belt with idler rollers, which can effectively reduce the tensile force of the mesh belt and improve its service life.

Temperature control device: It adopts an SCR power regulator for PID continuous control, featuring high - precision temperature control and good stability. This ensures that the parts are processed within a precise temperature range, thereby guaranteeing the quality of Heat treatment.

Working Principle

Carburizing principle: The heating furnace raises the temperature to the set carburizing temperature, usually between 900°C and 950°C. At the same time, a carbon - containing medium, such as kerosene, is introduced. The hydrocarbon compounds in the medium decompose into active carbon atoms at high temperatures. In an atmosphere with high temperature and a certain carbon potential, the carbon atoms diffuse to the surface of the workpiece and gradually penetrate into the interior, forming a carburized layer with a certain depth. This enhances the surface hardness, wear resistance, and fatigue resistance of the workpiece.

Normalizing principle: The parts are heated to the normalizing temperature in the heating furnace, generally between 850°C and 950°C, depending on the material of the parts. After being held at this temperature for a certain period, the parts are taken out of the furnace and cooled in the air. This allows the microstructure of the parts to transform, resulting in a more uniform and refined structure, thereby improving the strength, hardness, and toughness of the parts.

Process Characteristics

High - quality heat treatment: The precise control of temperature, atmosphere, and time parameters ensures a uniform carburized layer and consistent surface hardness of the workpiece, improving the quality and reliability of the treated product. The use of a protective atmosphere prevents the workpiece from oxidizing and decarburizing, ensuring the surface quality of the workpiece.

High production efficiency: It is a continuous - type heat - treatment equipment that can continuously feed and discharge workpieces, suitable for mass production. The zoning control of the heating furnace and the reasonable design of the process flow enable rapid heating and cooling of the workpieces, shortening the processing time and improving production efficiency.

Good stability and reliability: The key components of the production line, such as the heating furnace, mesh belt transmission, and temperature control device, have high stability and reliability. The use of high - quality materials and advanced manufacturing processes ensures the long - term stable operation of the equipment, reducing equipment failures and maintenance costs.

High degree of automation: It is equipped with an advanced electronic control system that can automatically control the entire production process, including temperature control, atmosphere control, mesh belt speed adjustment, and quenching and tempering time control. This reduces manual operation errors and improves the stability and consistency of production.

Application Areas

Automobile manufacturing industry: It is used for the carburizing and normalizing of automotive parts such as gears, drive shafts, and crankshafts, improving their surface hardness and wear resistance, prolonging their service life, and ensuring the safety and reliability of vehicle operation.

Mechanical manufacturing industry: It is used for the surface treatment of various mechanical parts such as tools, molds, and high - strength fasteners, enhancing their surface properties and improving the quality and competitiveness of products.

Aerospace field: It is used for the carburizing and normalizing of aerospace parts, improving their wear resistance, corrosion resistance, and high - temperature resistance, and ensuring flight safety.

Energy industry: For example, the drill bits and drill pipes in oil - drilling equipment and the valves and joints in natural - gas pipelines are treated by carburizing and normalizing to improve their wear resistance and corrosion resistance, ensuring the stable operation of energy extraction and transportation.