A kiln is a device made of refractory materials for calcining materials or firing products. According to the variety of calcined materials, it can be divided into ceramic kiln, cement kiln, glass kiln, enamel kiln, lime kiln and so on. The former can be divided into continuous kiln (tunnel kiln), semi-continuous kiln and intermittent kiln according to the operation method. According to the heat source, it can be divided into flame kiln and electric kiln. Vacuum carburizing of electric motor gear According to the condition of the heat source facing the green body, it can be divided into open flame kiln, muffle flame kiln and semi muffle flame kiln. According to the carrier of the green body, it can be divided into kiln car kiln, pusher kiln, roller bottom kiln (roller kiln), conveyor belt kiln, walking beam kiln and air cushion kiln. According to the number of channels, it can be divided into single channel kiln, double channel kiln and multi channel kiln. Vacuum Hardening Sensitivity of Aluminum Alloy Profiles Generally, the fuel for large-scale kilns is mostly heavy oil, light diesel oil or coal gas and natural gas. Kilns are usually composed of four parts: kiln chamber, combustion equipment, ventilation equipment, and conveying equipment. Most electric kilns use electric furnace wire, silicon carbide rods or molybdenum disilicide as heating elements. The structure is relatively simple and the operation is convenient. In addition, there are various atmosphere kilns and so on.Low alloy wear-resistant steel and its vacuum heat treatment process In specific industries, there are more subdivided types of kilns, such as cement rotary kilns, glass tank kilns, steel blast furnaces and converters, and some equipment in the chemical industry can also be classified as kilns. However, industrial kilns in the general sense mainly refer to calcination equipment for metals and inorganic materials.Application of Vacuum Heat Treatment in Fastener Manufacturing
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Jun 29, 2023
Regenerative combustion technology has been used in large-scale and high-temperature furnaces such as blast furnace hot blast stoves, open hearth furnaces, coke ovens, and glass melting furnaces since the mid-19th century. Vacuum Hardening Sensitivity of Aluminum Alloy Profiles The principle is to use the waste heat recovery device in the regenerator to alternately switch the flue gas and air to make it flow through the regenerator, so as to recover the sensible heat of the high-temperature flue gas to the greatest extent and increase the temperature of the combustion-supporting air. However, the traditional regenerator uses checker bricks as the regenerator, which has low heat transfer efficiency, large regenerator volume, and long reversing cycle, which limits its application in other industrial furnaces.Gear gas carburizing The new type of regenerator adopts ceramic balls or honeycomb as the regenerator, and its specific surface area is as high as 200-1000m2/m3, which is dozens to hundreds of times larger than the old checker bricks, thus greatly improving the heat transfer coefficient. The volume of the regenerator can be greatly reduced. In addition, due to the improvement of the reversing device and control technology, the reversing time is greatly shortened. The reversing time of the traditional regenerator is generally 20-30 minutes, while the reversing time of the new regenerator is only 0.5-3 minutes.Low alloy wear-resistant steel and its vacuum heat treatment process The new regenerator has high heat transfer efficiency and short reversing time, resulting in low exhaust gas temperature (below 200°C), and high preheating temperature of the preheated medium (only 100-150°C lower than the furnace temperature). Therefore, the waste heat of the exhaust gas is recovered close to the limit, the temperature efficiency of the regenerator can reach more than 85%, and the heat recovery rate can reach more than 80%.Application of Vacuum Heat Treatment in Fastener Manufacturing
A kiln is a device made of refractory materials for calcining materials or firing products. According to the variety of calcined materials, it can be divided into ceramic kiln, cement kiln, glass kiln, enamel kiln, lime kiln and so on. The former can be divided into continuous kiln (tunnel kiln), semi-continuous kiln and intermittent kiln according to the operation method. According to the heat source, it can be divided into flame kiln and electric kiln. Vacuum carburizing of electric motor gear According to the condition of the heat source facing the green body, it can be divided into open flame kiln, muffle flame kiln and semi muffle flame kiln. According to the carrier of the green body, it can be divided into kiln car kiln, pusher kiln, roller bottom kiln (roller kiln), conveyor belt kiln, walking beam kiln and air cushion kiln. According to the number of channels, it can be divided into single channel kiln, double channel kiln and multi channel kiln. Vacuum Hardening Sensitivity of Aluminum Alloy Profiles Generally, the fuel for large-scale kilns is mostly heavy oil, light diesel oil or coal gas and natural gas. Kilns are usually composed of four parts: kiln chamber, combustion equipment, ventilation equipment, and conveying equipment. Most electric kilns use electric furnace wire, silicon carbide rods or molybdenum disilicide as heating elements. The structure is relatively simple and the operation is convenient. In addition, there are various atmosphere kilns and so on.Low alloy wear-resistant steel and its vacuum heat treatment process In specific industries, there are more subdivided types of kilns, such as cement rotary kilns, glass tank kilns, steel blast furnaces and converters, and some equipment in the chemical industry can also be classified as kilns. However, industrial kilns in the general sense mainly refer to calcination equipment for metals and inorganic materials.Application of Vacuum Heat Treatment in Fastener Manufacturing
Regenerative combustion technology has been used in large-scale and high-temperature furnaces such as blast furnace hot blast stoves, open hearth furnaces, coke ovens, and glass melting furnaces since the mid-19th century. Vacuum Hardening Sensitivity of Aluminum Alloy Profiles The principle is to use the waste heat recovery device in the regenerator to alternately switch the flue gas and air to make it flow through the regenerator, so as to recover the sensible heat of the high-temperature flue gas to the greatest extent and increase the temperature of the combustion-supporting air. However, the traditional regenerator uses checker bricks as the regenerator, which has low heat transfer efficiency, large regenerator volume, and long reversing cycle, which limits its application in other industrial furnaces.Gear gas carburizing The new type of regenerator adopts ceramic balls or honeycomb as the regenerator, and its specific surface area is as high as 200-1000m2/m3, which is dozens to hundreds of times larger than the old checker bricks, thus greatly improving the heat transfer coefficient. The volume of the regenerator can be greatly reduced. In addition, due to the improvement of the reversing device and control technology, the reversing time is greatly shortened. The reversing time of the traditional regenerator is generally 20-30 minutes, while the reversing time of the new regenerator is only 0.5-3 minutes.Low alloy wear-resistant steel and its vacuum heat treatment process The new regenerator has high heat transfer efficiency and short reversing time, resulting in low exhaust gas temperature (below 200°C), and high preheating temperature of the preheated medium (only 100-150°C lower than the furnace temperature). Therefore, the waste heat of the exhaust gas is recovered close to the limit, the temperature efficiency of the regenerator can reach more than 85%, and the heat recovery rate can reach more than 80%.Application of Vacuum Heat Treatment in Fastener Manufacturing