Guide To Quenching Furnace

Application

A quenching furnace is a type of heat treatment furnace that is commonly used in industrial production. It is used to harden or temper materials, and plays an important role in the production process. Quenching furnaces are available in a variety of sizes and configurations, and can be custom-designed to meet the specific needs of the application.

A quenching furnace is used to heat a workpiece before quenching. This type of furnace is used to control the temperature of the workpiece during the quenching process. The quenching furnace heats the workpiece to a specific temperature, and then cools it rapidly.

Quenching is an important process in the heat treatment of metals. It is to put the workpiece into the furnace and heat it to the quenching temperature above the critical point and keep it for a while, and then quickly take the workpiece out of the furnace and put it into the quenching liquid (oil or water) for quenching. The purpose of quenching is to rapidly cool the workpiece to obtain a martensitic or austenitic structure, so as to improve the mechanical properties of the workpiece.

Principle

Quenching furnaces are the most common type of heat-processing equipment. They are limited in size by the amount of product they can contain and the size of the heat-processing chamber. Batch furnaces are used to process a variety of materials in numerous applications, including annealing, brazing, carburizing, hardening, normalizing, and tempering.

Thermocouple is the core sensing element of temperature instrument, which is widely used in calciner to measure the temperature. The accuracy of temperature measurement directly affects the production quality and economic efficiency.In industrial production, the temperature preservation of calciner is particularly important and has great value. Thermocouple is the core sensing element of temperature instrument, which is widely used in calciner to measure the temperature. The accuracy of temperature measurement directly affects the production quality and economic efficiency. In recent years, with the rapid development of industrial automation, the application of thermocouple in calciner is more and more extensive, and the requirements for thermocouple are also increasing. Many factors will affect the accuracy of thermocouple, such as material and structure of thermocouple, installation and use environment, etc.

Calcination is a process of heating a material to a high temperature, typically above its melting point, to cause thermal decomposition, phase changes, or to remove volatile constituents. This process is often used to treat smaller materials, materials sensitive to oxidation, combustion, explosion and heat.

Quenching furnaces can also deal with materials that may cause pollution. These furnaces have the ability to remove impurities from the materials, which can prevent environmental contamination.

A calcinator is a specialised piece of equipment used to deal with some specific products. These products often include a sealed hopper feeding system or pressure tank car, and a tensible dust-proof sealing ring. The calcinator helps to process these products quickly and efficiently, and is an essential piece of equipment for many businesses.

Specification

Each calciner is designed according to special needs and specifications in order to operate at high levels of efficiency and productivity. By customizing our designs to meet the specific needs of our clients, we are able to provide them with an optimal solution for their unique situation. Whether it is a small, medium, or large scale project, each calciner is designed with the client's best interest in mind.

Electricity and natural gas are both used as heat sources for calcination. There are hot zones inside the furnace that are independently controlled. The cooler allows for products to cool before they leave the furnace.

Vertical Quenching Furnace

In the past, aluminum alloy extrusions were treated in nitrate (KNO3) baths. This process is no longer used because it is not as effective as more modern processes.

Long bars are now cooled in a series of water baths housed in quench towers. The number of baths and the temperature of each is determined by the alloy being processed and the required mechanical properties.With the increase in the length of aluminum alloy extrusions, this method of quenching (cooling in a series of water baths housed in quench towers) has been eliminated. The number of baths and the temperature of each is determined by the alloy being processed and the required mechanical properties.

Water can be used for quenching. The water level is adjusted according to the need to ensure that the workpiece can be completely immersed. The water temperature can be measured by a thermometer and controlled by a water temperature controller. After the water is heated to the required temperature, the furnace can be lowered, and the workpiece is placed in the furnace for heat treatment. After the heat treatment is completed, the furnace is raised and taken out of the water for cooling.The vertical quenching furnace is a type of furnace that is commonly used in the industry for heat treatment. The furnace is designed so that the quenching pool is directly set under the furnace. This allows for the use of water for quenching purposes. The water level is adjusted as needed to ensure that the workpiece can be completely immersed. The water temperature is measured by a thermometer and controlled by a water temperature controller. Once the water has been heated to the required temperature, the furnace is lowered and the workpiece is placed in the furnace. After the heat treatment is completed, the furnace is raised and the workpiece is taken out of the pool to cool.

This quenching furnace has the following characteristics:

Before quenching, the extruded product can be heated evenly and rapidly;
The material can be put into the quenching pool in the shortest time;
It can avoid bending and twisting deformation of extruded products caused by self-weight and heating, which is conducive to maintaining the shape of products;
The mechanical properties of the extruded products after quenching are uniform.

Vacuum quenching furnace

Vacuum heat treatment furnace is the most widely used type of heat treatment furnace. It is mainly used for heat treatment of various metals and alloys, and can also be used for heat treatment of ceramics and other non-metallic materials. The working principle of vacuum heat treatment furnace is to place the workpiece in the furnace, evacuate the furnace to a certain degree of vacuum, and then heat it to the desired temperature. After heat preservation, cooling and other heat treatment processes are carried out under vacuum or protective atmosphere.

Vertical and Horizontal Single Chamber Gas Quenching Vacuum Furnace

Despite its simple structure, a single-chamber furnace has many advantages. Heating and cooling are carried out in the same chamber, so it is very easy to operate and maintain. It also has a small footprint, so it can be used in many different applications.

Vertical and Horizontal Double Chamber Gas Quenching Vacuum Furnace

The workpieces in this kind of furnace are cooled by the cold air from the cooling chamber. The cold air is isolated from the heating chamber by a vacuum gate valve. Therefore, the workpiece can be cooled quickly without being affected by the heat in the heating chamber.

At the same time, thehot and cold spots of the workpiece are obviously improved.The double-chamber furnace is a type of vacuum furnace that has two chambers, a heating chamber and a cooling chamber. The cooling gas is only charged into the cooling chamber, and the heating chamber is kept in vacuum. This design helps to improve production efficiency by about 25% to 30%, compared with the single-chamber vacuum furnace. In addition, the double-chamber furnace also eliminates hot and cold spots on the workpiece.

The feeding chamber is connected to a vacuum pump, and the heating chamber and the cooling chamber are connected to a cooled water system. A three-chamber semi-continuous gas quenching vacuum furnace is used for heat treating metals. The furnace has a feeding chamber, a heating chamber and a cooling chamber. The feeding chamber is connected to a vacuum pump, and the heating chamber and the cooling chamber are connected to a cooled water system. The furnace operates by drawing a vacuum in the heating chamber, then introducing a gas into the chamber. The gas cools the metal, and the cooled metal is then quenched in the cooling chamber.

Vacuum heat treatment is a process in which a material is heated to a specific temperature in a vacuum environment and then cooled. This process can improve the properties of the material, such as strength, hardness, and wear resistance. The continuous vacuum heat treatment furnace has high production efficiency, saves energy, reduces costs, and is suitable for in-line production and large-scale production operation. It is the development direction of vacuum heat treatment furnaces in the future.

Summarize

high flow rate vacuum furnace and high negative pressure vacuum furnace has provided new technical means for the production of large forgings and complex shapes.The scope of vacuum heat treatment processing of steel and alloys has expanded with the advancement of industrial technology and the improvement of product processing quality and technical requirements. In the past ten years, high pressure gas quenching vacuum furnaces, high flow rate vacuum furnaces and high (negative) pressure The rapid development of high flow rate vacuum furnace, high flow rate vacuum furnace and high negative pressure vacuum furnace has provided new technical means for the production of large forgings and complex shapes.

Its characteristic is that the cooling gas pressure is usually 0.1 ~ 0.5MPa, and some high-pressure gas quenching vacuum furnaces as high as 2MPa or even 4MPa have been put into operation, and the workpiece is cooled under high-speed airflow. This kind of cooling method can save energy, reduce pollution, shorten cooling time and improve production efficiency.