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The calciner is a device that disperses and suspends raw meal powder in the airflow, so that the fuel combustion and calcium carbonate decomposition process can occur within a short time (generally 1.5 to 3 seconds). It is a high-efficiency direct combustion solid-gas phase heat exchange device. Saw Hob Vacuum Furnace Application In the calciner, since the combustion of the fuel is carried out simultaneously with the heat-absorbing reaction of the material in a state of intense turbulence, the fine particles of the fuel float and burn at the same time, almost turning the entire furnace into a combustion zone. Therefore, no visible flame can be formed, but it is in a state of low-temperature flameless combustion at 820-900 °C.Vacuum hardened spring steel wire Since its appearance in the 1970s, the calciner has developed rapidly. So far, many types have appeared. According to their structure and working principle, they can be roughly divided into the following four types.Vacuum Heat Treatment Applications for Metal Machine Tools and Gear Parts The structure of the cyclone calciner is relatively simple. The structure of a typical swirl calciner is shown in the figure, which is composed of an upper swirl chamber, a lower swirl chamber and a reaction chamber. The inner surface is inlaid with refractory concrete and refractory bricks. There are 1~3 fuel nozzles in the middle of the reaction chamber, which inject fuel downward at an angle of 30°.Pay Attention to Vacuum Tempering to Improve the Quality of Quenched Parts

In an industrial furnace, the heat transfer process through the furnace lining is that the heat of the hot flue gas in the furnace is transferred to the furnace wall through radiation and convection. In the furnace lining, the heat is transferred from the inner wall to the outer wall in the form of conduction.Analysis of vacuum heat treatment process for wind power products When calculating the heat transfer of the furnace lining, in order to simplify the calculation, the following assumptions are generally made according to the actual situation: The heat conduction of the lining is stable, that is, the heat flow (or heat intensity) does not change with time;Vacuum Hardening Stainless Steel The heat conduction of the furnace lining is one-dimensional, that is, the heat is only transferred along the normal direction of the isothermal surface; The thermal conductivity of each layer of material is constant and equal to the thermal conductivity at the average temperature of the temperature on both sides of each layer of material;Sintering of B4C by Pressureless Liquid Phase Sintering The contact between the layers is so good that the contact surfaces of the two layers have the same temperature. When designing the furnace lining, the heat-resistant and heat-insulating materials are generally pre-selected according to the operating temperature (hot surface temperature) of the industrial furnace, and then the cold surface temperature is selected to determine the thickness of various materials to meet the system design requirements.Vacuum Heat Treatment of Fasteners

Tube furnace is a common heating equipment widely used in industrial production for heating, Drying and heat treatment and other fields. It is mainly composed of furnace body, burner, flue, control system, etc. As a result, it can provide a high temperature and uniform heating environment, effectively improving production efficiency and quality. The temperature range of the tube furnace is very critical, it directly determines the heating effect andCeramic-To-Metal Vacuum Brazing Services  The quality of the heat treatment process. Generally speaking, the temperature range of the tube furnace is usually between 200 ° C and 1800 ° C, different The temperature range of tube furnaces also varies by type and size. Among them, the low temperature tube furnace generally refers toFlux-free Vacuum Brazing of Aluminum Alloys Equipment operating at temperatures between 200°C and 1000°C, such as solid waste incinerators, graphite Furnace etc. The medium temperature tube furnace has a temperature range of 1000°C to 1200°C and is widely used in glass processingSaw Hob Vacuum Furnace Application Engineering, metal heat treatment, ceramic firing and other fields. High temperature tube furnace with a temperature range of 1200°C to 1800°C, mainly used for high-temperature processing such as crystal growth, semiconductor preparation, and ceramic material preparationVacuum hardened spring steel wire field.

The rolled steel plate of a cold-rolled sheet project is annealed, and the annealing method is an all-hydrogen bell annealing furnace. The unit is located on the AB span of the third area of the main workshop, between lines 310 and 324 (see the floor plan). Application of Vacuum Heat Treatment in Fastener Manufacturing The whole set of units has imported technology from the German LOI company and has 17 furnaces in total. Each annealing furnace is composed of hearth, inner cover, outer cover, cooling cover, quick cooling system, medium pipeline, hydraulic control system, etc. (see Figure 1). Optimal Vacuum Heat Treatment For Bevel Gears The installation elevation is on the steel structure of -40mm (outside: -30mm), and the diameter of the hearth is 2.81 meters. The inner cover, heating cover, cooling cover, quick cooling system and combustion support system of the bell furnace are all provided by the manufacturer Tianjin LOI. Vacuum Hardening Stainless Steel The company assembles the whole and only needs to be hoisted as a whole, so the installation focuses on the installation of the furnace platform, surrounding equipment and the installation of the furnace bottom medium pipeline. This plan is specially compiled for the better construction of the whole unit.Sintering of B4C by Pressureless Liquid Phase Sintering

In industrial production, use the heat generated by fuel combustion, or convert electrical energy into heat energy, so as to purchase thermal equipment for various processing techniques such as smelting, heating, drying, sintering, cracking and distillation of workpieces or materials, Vacuum Heat Treatment of FastenersKnown as industrial furnaces. Industrial kiln is mainly composed of furnace lining, furnace frame, heating device (such as combustion device, electric heating element), preheater, furnace front pipeline, smoke exhaust system, furnace machinery and other parts.Optimal Vacuum Heat Treatment For Bevel Gears At present, industrial furnaces are widely used in all walks of life in the national economy, such as metallurgy, building materials, chemical industry, light industry, food and ceramics and other industries. It has many varieties, high energy consumption and great influence, and is the key equipment for industrial heating. Sintering of B4C by Pressureless Liquid Phase Sintering The development of its heating technology and the adoption of high-efficiency energy-saving technology have a great impact on improving product quality, reducing production costs, rationally utilizing energy, improving working conditions, and realizing civilized production.Vacuum Hardening Stainless Steel

Bell furnace is a kind of heat treatment furnace, which consists of a heating mantle, two movable furnace seats, two inner mantles and a valve frame. The heating mantle is made of steel plate rolled into a circle and welded. Application of Vacuum Heat Treatment in Fastener ManufacturingOn the upper part of the mantle body there is a position for hoisting and changing the mantle, on the lower part there are three supporting feet for supporting the furnace mantle, and at the bottom there is a sand-sealing knife, which is used during heating. The heating mantle can be directly pressed on the flange of the furnace inner mantle to achieve a sealing effect. Optimal Vacuum Heat Treatment For Bevel GearsThe furnace cover is sealed with the furnace body through the supporting feet and the sand sealing knife, while the inner cover is sealed with the furnace cover through the supporting feet and the sand sealing knife. The furnace cover is also equipped with a cylinder-driven mechanical seal mechanism, which achieves the sealing effect by pressing the sealing surface between the furnace cover and the inner cover, and injecting nitrogen into the seal. Vacuum Hardening Stainless SteelThe bell furnace has the advantages of uniform heating temperature, accurate temperature control, energy saving, less environmental pollution, quick start-up and quick stop of the equipment, and can be used for vacuum, positive pressure or atmosphere treatment, but the equipment is huge, the sealing mechanism is complex, and the maintenance volume is large. ,costly.Metallographic Inspection Knowledge of Bolt Quenching And Tempering

Equipment inspection: Before starting the furnace, a comprehensive inspection should be carried out on the equipment to check whether there are tools or other conductive substances in the electrical control box. If there are forgotten workpieces in the furnace, they should be removed in time. In case of loosening, the safety shield must be complete and effective. Special personnel should be responsible for the inspection of electrical appliances and instruments. Only when it is confirmed that there are no hidden dangers in the equipment can the furnace be allowed to work.What is vacuum heat treatment technology? Furnace start-up: adjust the temperature control indicator number of the temperature control instrument to the position required by the process, then turn on the main power switch of the equipment, turn on the instrument and the heating furnace switch, and the Hongda box-type resistance furnace starts to heat up to the process temperature. After the heating furnace is raised to the process temperature, the temperature shall be measured and calibrated according to the requirements of the temperature calibration technical regulations. When adjusting the instrument temperature, pay attention to: surface temperature = furnace temperature - correction value.Substrate vacuum sintering characteristics Furnace charging: According to the structural characteristics of the parts and the size of the batch, the amount of furnace charging varies. The number of furnaces is determined according to the size of the effective heating zone.Improvement of Bolt Vacuum Hardening Crack Out of the oven: It can be out of the oven after fully insulated according to the process requirements. Pay attention to cut off the power supply of the heater when operating out of the furnace, and remove the parts in the furnace to prevent accidents such as burns.Application and selection of vacuum sintering furnace

There are many types of calciners. Although their structures and properties are different, their main functions are the same: to make the exothermic process of fuel combustion and the endothermic process of raw meal carbonate decomposition be suspended in the middle.Substrate vacuum sintering characteristics It is carried out extremely quickly in a floating state or a fluidized state, so that the decomposition rate of the carbonate of the raw material entering the kiln is increased, thereby reducing the heat load of the kiln, increasing the operation cycle of the kiln, and improving the output quality. The temperature control of the calcinerApplication and selection of vacuum sintering furnace It is very important to the stability of the heat distribution and thermal system of the whole precalciner kiln system. For this reason, the author discusses several issues related to the temperature control of the calciner.Improvement of Bolt Vacuum Hardening Crack The temperature of the calciner depends on the heat release rate of the fuel combustion process and the heat absorption rate of the raw meal decomposition process. When the heat release rate of fuel combustion is slow and the decomposition of raw meal is carried out under near-equilibrium conditions, the temperature of the calciner is in the range of 860 ~ 920°C, and the heat released by fuel combustion will be quickly transferred to the raw meal and absorbed by the decomposition reaction. However, when the fuel combustion rate is greater than the heat absorption rate of the raw meal decomposition process, the heat of fuel combustion is greater than the heat absorption required for raw meal decomposition, and the temperature of the calciner will exceed the equilibrium temperature range.Mine pressure plate vacuum hardening