The role of push rod furnace Pusher furnace refers to a furnace that periodically pushes the charge or tray placed on the track into the furnace or out of the furnace by means of a pusher.Vacuum heat treatment of sheet parts When the workpiece is heated in the furnace, it is kept in a relatively static state for a certain period of time; when it is quenched out of the furnace, some trays are automatically tilted and the charge is poured into the quenching medium, and some are entered into the quenching medium together with the charge for cooling.Effect of Vacuum Annealing Temperature on Stainless Steel Cold Rolled Sheet This type of furnace has strong adaptability to different heat treatment processes, so it is easy to form a production line, and is widely used in heat treatment processes such as quenching, normalizing, annealing, tempering and carburizing, nitriding and carbonitriding.Effect of Vacuum Annealing on Properties of 304 Stainless Steel Tensile Billets The main disadvantage of this type of furnace is that the feeding tray is repeatedly fed into the furnace for heating and cooling out of the furnace, resulting in large energy loss, that is, low thermal efficiency, and the feeding tray is easily damaged. Another disadvantage is that when different technical requirements are implemented for different types of workpieces, it is often necessary to push out all the original workpieces before the next workpiece can be pushed, that is, the process adaptability is poor.

Features of Large Regenerative Magnesium Reduction Furnace Regenerative high-temperature combustion technology is the most advanced combustion technology in the world today, that is, there are evenly distributed nozzles on the furnace walls on both sides of the furnace. Vacuum heat treatment of electrical pure iron When the nozzles on one side are burning as burners, the nozzles on the other side are Used as a flue to exhaust smoke. After a reversing cycle, through the switching of the reversing valve, the nozzle on one side of the burner becomes a flue for exhausting smoke, and the nozzle on the other side that was originally used for exhausting smoke is burned as a burner. 30CrMnSiA vacuum heat treatment process In this way, the heating, the efficient recovery of the heat of the flue gas and the high temperature preheating of the air are completed at the same time. The exhaust side nozzle enters the regenerator through the high-temperature gas channel, and exchanges heat with the regenerator in the regenerator. Finally, it is discharged into the atmosphere by the chimney. At the same time, the air enters the high-temperature regenerator on the other side that has been preheated by the high-temperature flue gas in the previous commutation cycle, and is preheated to 900-1050°C at the same time. After exiting the regenerator, it passes through the high-temperature gas channel. The nozzle on the side wall of the furnace is ejected, and the high-temperature air and fuel ejected from the nozzle are mixed and burned in the furnace.Atmospheric carburizing and low pressure vacuum carburizing of gears

The role of the bell furnace The hood furnace is a heat treatment furnace in which the furnace body is a hood, or the furnace bottom does not move, and the furnace hood moves, or the furnace hood does not move and the furnace bottom moves. It is used for batch heat treatment of workpieces.Vacuum heat treatment process of 40Cr steel The traditional bell furnace uses nitrogen-hydrogen mixed gas as the protective medium. Compared with nitrogen, hydrogen has the advantages of good thermal conductivity, low density, low dynamic viscosity and strong reducibility, and gradually replaces the nitrogen-hydrogen mixed gas as the protective gas. At the same time, it puts forward more stringent requirements for the safety control of bell furnaces.Degreasing Process in Ceramic Injection Molding First of all, the metal shell of the protective cover and the furnace table are all tested by X-ray to strictly ensure the processing quality of each equipment. Second, at the beginning of the annealing cycle, check all gauges and switch positions so that they are in the correct setting. After the inner cover is fastened on the prepared furnace table, the leakage test of the hydrogen inlet valve is carried out, and then the leakage test of the furnace table space is carried out to ensure that the furnace table and the inner cover system are completely sealed. Each device conducts a rigor test. After passing the leak test, purge the furnace space with nitrogen. Nitrogen purging must meet three conditions to end, a certain amount of nitrogen purging, and the minimum nitrogen purging time: the oxidation content is less than 1%.Vacuum Heat Treatment Process Prevention of Cemented Carbide Tool Cracks Bell furnaces are mostly used for the annealing treatment of steel wires, steel pipes, copper strips, copper wires and silicon steel sheets in the metallurgical industry. Among them, copper strips are mainly suitable for heat treatment of brass strips, bronze strips, special-shaped copper strips, red copper strips and other materials.

Introduction of push rod furnace Pusher furnace refers to a furnace that periodically pushes the charge or tray placed on the track into the furnace or out of the furnace by means of a pusher. When the workpiece is heated in the furnace, it is kept in a relatively static state for a certain period of time; when it is quenched out of the furnace, some trays are automatically tilted and the charge is poured into the quenching medium, and some are entered into the quenching medium together with the charge for cooling. This type of furnace has strong adaptability to different heat treatment processes, so it is easy to form a production line, and is widely used in heat treatment processes such as quenching, normalizing, annealing, tempering and carburizing, nitriding and carbonitriding.Vacuum Brazing of Silicon Nitride Ceramics and 45 Steel The main disadvantage of this type of furnace is that the feeding tray is repeatedly fed into the furnace for heating and cooling out of the furnace, resulting in large energy loss, that is, low thermal efficiency, and the feeding tray is easily damaged. Another disadvantage is that when different technical requirements are implemented for different types of workpieces, it is often necessary to push out all the original workpieces before the next workpiece can be pushed, that is, the process adaptability is poor.CVD/PCD Diamond Tool Brazing Types: (1) Push rod type ordinary box-type resistance furnace (2) Continuous carburizing automatic line (3) Push rod type gas carbonitriding furnace and its production line.Factors Influencing the Quality of Reaction Sintered Silicon Carbide

Electric heating heat transfer oil furnace is a new type, safe, high efficiency and energy saving, low pressure (under normal pressure or lower pressure) and can provide high temperature heat energy special industrial furnace Transfer heat to heat-using equipment.Influence of Reaction Sintering Process on Properties of Silicon Carbide Ceramics The electric heating heat transfer oil system is composed of explosion-proof electric heater, organic heat carrier furnace, heat exchanger (if any), on-site explosion-proof operation box, hot oil pump, expansion tank, etc. The inlet and outlet pipes and some electrical interfaces can be used.Application of Pressureless Sintering of Silicon Carbide Ceramics For the electric heating oil furnace, the heat is generated and transmitted by the electric heating element immersed in the heat-conducting oil. The heat-conducting oil is used as the medium, and the circulating pump is used to force the heat-conducting oil to circulate in the liquid phase. After the equipment is unloaded by the heat-using equipment, it passes through the circulating pump again, returns to the heater, absorbs heat, and transfers it to the heat-using equipment. In this way, the continuous transfer of heat is realized, the temperature of the heated object is increased, and the heating process is achieved. Require.Vacuum Brazing of Cemented Carbide and Martensitic Stainless Steel

The working principle of electric heating furnace Electric heating heat transfer oil furnace is a new type, safe, high efficiency and energy saving, low pressure (under normal pressure or lower pressure) and can provide high temperature heat energy special industrial furnace Transfer heat to heat-using equipment.Influence of Reaction Sintering Process on Properties of Silicon Carbide Ceramics The electric heating heat transfer oil system is composed of explosion-proof electric heater, organic heat carrier furnace, heat exchanger (if any), on-site explosion-proof operation box, hot oil pump, expansion tank, etc. The inlet and outlet pipes and some electrical interfaces can be used.Application of Pressureless Sintering of Silicon Carbide Ceramics For the electric heating oil furnace, the heat is generated and transmitted by the electric heating element immersed in the heat-conducting oil. The heat-conducting oil is used as the medium, and the circulating pump is used to force the heat-conducting oil to circulate in the liquid phase. After the equipment is unloaded by the heat-using equipment, it passes through the circulating pump again, returns to the heater, absorbs heat, and transfers it to the heat-using equipment. In this way, the continuous transfer of heat is realized, the temperature of the heated object is increased, and the heating process is achieved. Require.Vacuum Brazing of Cemented Carbide and Martensitic Stainless Steel

Types of pressure filters The pressure filter or stainless steel is made of different uses and functions due to the different filling media of the filter. Generally, there are quartz sand filters, activated carbon filters, and manganese sand filters. It can be used alone or in combination according to the actual situation. The medium of the multi-media filter is quartz sand, anthracite, etc.Vacuum heat treatment of corrugated spring bayonet connector The function is to filter out suspended solids, mechanical impurities, organic matter, etc., and reduce the turbidity of water. Activated carbon filter medium is activated carbon, the purpose is to adsorb and remove pigment, organic matter, residual chlorine, colloid, etc. in water. The medium of manganese sand filter is manganese sand, which mainly removes ferrous ions in water.Analysis of carbon content on the surface of carburized parts Filter, also known as decontamination device and filter valve, is an indispensable device in the pipeline system for conveying media. It is usually installed at the inlet end of pressure reducing valve, pressure relief valve, water level valve or other equipment. Its function is to filter media The mechanical impurities in the sewage can be filtered for rust, sand, a small amount of solid particles in the liquid, etc.Application of low pressure vacuum carburizing

The furnace base is fixed, the heating furnace hood can be moved or the heating furnace hood is fixed, and the furnace base can be lifted and lowered. The traditional bell furnace uses nitrogen-hydrogen mixed gas as the protective medium. Compared with nitrogen, hydrogen has the advantages of good thermal conductivity, low density, low dynamic viscosity and strong reducibility, and gradually replaces the nitrogen-hydrogen mixed gas as the protective gas. At the same time, it puts forward more stringent requirements for the safety control of bell furnaces.Precision carburizing heat treatment of gears First of all, the metal shell of the protective cover and the terrace are all tested by X-ray to strictly ensure the processing quality of each equipment. Second, at the beginning of the annealing cycle, check all gauges and switch positions so that they are in the correct setting. After the inner cover is fastened on the prepared furnace table, the leakage test of the hydrogen inlet valve is carried out, and then the leakage test of the furnace table space is carried out to ensure that the furnace table and the inner cover system are completely sealed. Each device conducts a rigor test.Deformation and Control of Carburizing and Quenching for Large Gears and Gear Shafts After passing the leak test, purge the furnace space with nitrogen. Nitrogen purging must meet three conditions to end, a certain amount of nitrogen purging, the minimum atmosphere purging time: the oxidation content is less than 1%.Vacuum Brazing Technology of Stainless Steel Surgical Instruments

1. The same line type decomposition furnace This type of precalciner sits directly above the kiln exhaust chamber. This type of furnace is actually an improvement and extension of the rising flue. It has the advantage of simple layout. The kiln gas directly enters the decomposition furnace through the kiln tail smoke chamber. Due to the large gas flow in the furnace and the low oxygen content, the decomposition furnace is required to have a large furnace capacity or a large gas and stagnation furnace.Carbonitriding of 12CrNi3A Steel Parts Stay long. This type of furnace has a simple, neat and compact layout, and the discharged gas directly enters the lowermost cyclone. Therefore, they can be arranged on the same platform, which is beneficial to reduce the height of the building. At the same time, the use of "gooseneck" pipe The structure increases the capacity of the furnace area, which is also conducive to the layout, and does not increase the height of the building.Vacuum Brazing of Titanium Alloy and Aluminum Alloy Dissimilar Metals 2. Offline calciner This type of calciner is self-contained. In this way, there are two rows of preheaters at the end of the kiln, one One row passes through the kiln gas, one row passes through the furnace gas, and the kiln row material flows to the lowest cyclone of the kiln row and then enters the decomposition furnace. After being heated and decomposed together with the furnace material in the furnace, it is separated by the lowest cyclone of the furnace and enters the kiln. same When the off-line kiln is generally equipped with two main exhaust fans, one is specially designed to suck the kiln gas, and the other is to suck the furnace gas. The working conditions of the two columns in production can be adjusted independently. In extra-large kilns, three columns of preheaters and two calciners are installed.Vacuum Quenching Process of 45 Steel and T10 Steel

Membrane wall tubes are used around the furnace, furnace roof, cyclone separator and tail shaft, and good metal sealing devices are installed at each wall-penetrating part of the boiler and the junction between the ceiling and the side wall for primary sealing. The heated wall around the whole boiler becomes an all-welded membrane tube wall, and the inner surface of the furnace wall is not in direct contact with the flame and flue gas. Gas Nitriding Technology of 34CrNi3MoA SteelThe heating surface of the membrane wall of the whole boiler, the outer surface of the furnace wall of the cyclone separator and the flue of the economizer (except the furnace top and furnace bottom) are provided with profiled plates for protection. The furnace wall structure used in each area of this boiler is as follows:Research on Vacuum Nitriding Technology The vertical furnace wall around the furnace and the vertical furnace wall around the rear shaft cladding wall are made of 200mm (from the center line of the tube) thick lightweight thermal insulation material composite structure, and the fin tubes are filled with aluminum silicate refractory fiber loose cotton and high temperature adhesive. (5mm high tube wall) + aluminum silicate refractory fiber felt 50mm + high temperature glass wool board; it is required to apply a certain amount of compression to the lightweight thermal insulation material, and the layers should be staggered and pressed with support nails, elastic pressure plates and wire mesh It is fixed, and the outer surface of the furnace wall is provided with an outer guard plate to protect it; in order to meet the needs of the expansion of the rigid beam, the rigid beam area is densely poured with a thermal insulation castable supplementary pouring structure.Aluminum alloy die-casting mold vacuum heat treatment

How the tube furnace works According to the requirements of the laboratory, the loading and unloading adopts intermittent manual loading and unloading. When charging, place the material box on the material basin bracket, open and take out the sealing end cover at one end of the furnace tube, put it into the material box bracket with material box, install the sealing end cover on the furnace tube flange and tighten the clamp bolt. Rectifying strut and vacuum heat treatment processThen, the process atmosphere is introduced, until the oxygen content in the furnace tube reaches the process requirements, and the heating and sintering is carried out. After the sintering process of the product is completed, a small amount of the process atmosphere should be continued and the temperature should be lowered until the temperature in the furnace is lower than the process requirements, and then the sealed end cover of the furnace tube can be opened to take out the product.Diagnosis and Treatment of Discoloration Faults of Vacuum Brazing Furnace Parts Tube furnaces are divided into vertical furnaces, cylindrical furnaces and large square furnaces according to furnace types; According to the use, it is divided into: chemical reaction furnace, furnace for heating liquid, gas heating furnace, furnace for heating mixed phase flow.Cemented carbide vacuum dewaxing and sintering process

How the mesh belt furnace works Control method of mesh belt furnace: There are many specifications and models of mesh belt furnace. Generally speaking, the operation of mesh belt is mainly controlled by frequency converter, and the mechanical action is also designed according to the process requirements. Therefore, different processes and actions are also different. The control is mainly PLC controlled.Garment cutting machine high speed steel straight blade vacuum heat treatment The heating device of the mesh belt furnace: The heating device of the mesh belt furnace used to be a stainless steel liner, and now a spot heat radiant tube is commonly used. The heat radiation tube is composed of a tube core and a tube jacket; the tube core has a cage type, a vertical winding type, and a resistance wire wrapping type. The material has the characteristics of high temperature oxidation resistance and carburization resistance, and long service life. The tube jacket is generally made of high temperature and oxidation resistant materials. Radiant tubes with different specifications have different specifications. Generally, the effective length is 600mm-2400mm; the power of a single tube is 1.5-40KW; the voltage of a single tube is 12-220V; the outer diameter of the tube sleeve is 60-280mm (for mesh belt furnace). In addition, some mesh belt furnaces use heat-resistant steel as heating elements.Heat treatment of involute spline parts realized by vacuum oil quenching technology Temperature control of mesh belt furnace: The furnace temperature measurement system mainly consists of temperature sensing elements and matching temperature measurement circuits and instruments. Vacuum heat treatment process of ball screwCommonly used temperature sensing elements are thermocouples and thermal resistances. The temperature sensing elements convert the temperature into thermoelectric potential, and measure the thermoelectric potential through the instrument to determine the temperature value. Commonly used temperature sensing elements include thermocouples, thermal resistors, and some thermal and photosensitive elements. Vacuum brazing process of nickel-based mixed brazing filler metalCommon furnace temperature control is that each heating zone consists of a thermocouple and an instrument to form a control system, which records the temperature while measuring and controlling the furnace temperature, and another thermocouple and an instrument to form an over-temperature protection system. When the temperature exceeds the set value, the current is cut off and a fault signal is sent out, and the electric furnace can be reset manually until the fault is eliminated.High Pressure Gas Quenching Technology For Gears

Continuous heat treatment furnace The heat treatment furnace that utilizes mechanical pushing or feeding for the mechanized bottom is mainly used for continuous heat treatment of workpieces in batches.Six details of gas carburizing Mainly used for annealing of large carbon steel and alloy steel parts; tempering of surface quenched parts; heat treatment processes such as stress relief annealing and aging of weldments.Control of retained austenite in tooth angle by vacuum carburizing heat treatment Scope of application The continuous heat treatment furnace is suitable for the bright annealing of the mass-produced stainless steel parts and products after stretching, forging and rolling, and the bright quenching of the stainless steel parts. After the furnace treatment, the product has the characteristics of smooth surface, uniform hardness and small deformation.Vacuum brazing of surgical forceps - heat treatment process

Energy-saving boilers are also called waste heat boilers. As the name implies, they refer to boilers that use the waste heat in various industrial processes, waste gas or waste liquid and the heat generated by the combustion of combustible substances to heat water to a certain working fluid. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with waste heat recovery and utilization of smoke boxes and flues are also called waste heat boilers. Waste heat boilers can produce hot water or steam for use in other sections through waste heat recovery. principleResearch on Vacuum Heat Treatment Technology of Cr12 Steel Fuel, gas, and coal are burned to generate high-temperature flue gas to release heat. The high-temperature flue gas first enters the furnace, then enters the waste heat recovery device of the front smoke box, then enters the pyrotechnic pipe, and finally enters the waste heat recovery device in the flue of the rear smoke box. The flue gas becomes low-temperature flue gas and is discharged into the atmosphere through the chimney. Because the waste heat boiler greatly improves the utilization rate of the heat released by fuel combustion, this kind of boiler is very energy-saving. Due to the complex manufacturing process of waste heat boilers, the production cost is relatively high, so the boilers are expensive.Vacuum heat treatment of 3Cr2W8V steel-aluminum die-casting mold composition Oil-fired gas-fired energy-saving boilers are mainly composed of burners, controllers, power distribution boxes, furnaces, pyrotechnic pipes, front and rear smoke boxes (internal replacement hot water jackets), flues and chimneys; coal-fired energy-saving boilers are mainly composed of furnaces, water and fire pipes, overheating It consists of evaporator, evaporator, economizer, front and rear smoke boxes, flue and chimney.Vacuum Annealing Heat Treatment of Metal Coronary Stents

Regulations for temperature calibration of experimental box-type resistance furnaces 1. Use a DC electronic potentiometer for calibration; the meter should be powered on before calibration.Vacuum heat treatment control of machining deformation of engine cast titanium casing Warm for half an hour, first calibrate the standard. 2. Place the temperature measuring instrument to be calibrated in a horizontal position, and connect the calibration circuit according to the regulations. 3. Determine the calibration temperature according to the graduation number of the temperature instrument, generally should focus on selection Commonly used temperature measurement points.Influence of brazing filler metal on vacuum brazing of titanium alloys 4. Set the DC electronic potentiometer switch S to "output", according to the measured temperature The millivolt value of the point determines the output value of the calibration meter.Failure analysis of vacuum sintered die-bonding chip peeling off 5. Toggle the key board switch to "unknown" for verification, and adjust the temperature meter of zero. 6. During daily use, no one may arbitrarily adjust the zero point of the temperature meter value.

Structural characteristics of ladle refining furnace equipment The overall structure of the LF-20t ladle refining furnace adopts a ladle car moving scheme. It consists of two parts: mechanical equipment and electrical equipment. The mechanical part is composed of cover, heating station bridge and furnace cover lifting mechanism, feeding hopper, electrode lifting device, short net, hydraulic station, argon gas system, cooling water system, compressed air system, etc. Vertical double-barreled shotgun receiver vacuum heat treatmentThe heating station bridge is not only the installation support for the furnace cover lifting mechanism, the electrode guide device and the feeding hopper, but also the operation platform for the electrode extension. It is welded by section steel and has a certain bearing capacity. Electrode lifting device and short net are the core components of the ladle furnace.Vacuum quenching of KMN steel structure The short network adopts an optimized triangular arrangement, so that the three-phase power is in the best working state. The electrode lifting mechanism is not only the support body of the electrode, but also the carrier for conveying large current. The electrical equipment consists of high-voltage power supply system, transformer, low-voltage power supply control system, electrode lift automatic control system, ladle car travel control system, hydraulic control system, etc.Vacuum gas Quenching of 45CrNiMo1VA Steel Spinning Mandrel

The working process of the melting furnace During the production and operation of the device, coal gangue and coke are put into the melting furnace according to the mass ratio of 1: into the device, and at the same time, a certain amount of limestone is put into the device according to the melting requirements for flux.Aluminum alloy chassis vacuum brazing process The coal gangue and coke are respectively measured through the metering funnel, then poured into a tipping hopper, and then transported to the charging funnel on the top of the furnace through the winch, and the charging funnel respectively feeds the coal gangue and coke to the charging throttle valve. The charging throttle valve is located at the upper end of the furnace body, and the interior includes at least two-stage gate valve system, a material support structure, and a fire prevention and sealing mechanism; the multi-stage gate valve system is filled with nitrogen to ensure that the gas in the furnace will not leak. The mixed material moves down slowly by its own gravity through the charging throttle valve. During the moving process, the material goes through the processes of drying, preheating, gasification, oxidation, decomposition, melting, etc. Vacuum Brazing Technology of Aluminum Alloy Plate Radiator At the same time, according to the monitoring data and reaction state, an appropriate amount of oxygen is injected into the bottom of the furnace, and the generated combustible gas and liquid molten slag are discharged out of the furnace. The combustible gas released from the furnace is pre-dusted by the cyclone dust collector, and then enters the gas waste heat boiler, which is mixed with air and fully combusted. The exhausted flue gas is treated by a bag filter and desulfurized and denitrified and discharged into the atmosphere at a level better than the national emission standard; the liquid slag is directly discharged into the atmosphere. Sent to the adjacent slag drawing facility for subsequent processing. The melting furnace process generally takes about 2 hours to complete the reaction. The following is the chemical and physical state of each part participating in the reaction from top to bottom.Compound Gas Nitriding Treatment Process For Swing Arm Bogies

Melting furnace process description The ultra-high temperature pyrolysis gasification melting reactor is a fixed bed vertical reactor under normal pressure. Working according to the principle of moving bed, the inside of the gasification melting furnace is divided into drying, oxidative decomposition and reduction melting stages in layers from top to bottom.Carbide wood knife tools vacuum brazing The solid waste is charged from the upper part of the furnace and descends while exchanging heat with the gas rising from the lower part of the furnace. The synthetic gas discharge device discharged from the upper part of the gasification melting furnace. The solid waste in the thermal decomposition section descends together with coke and limestone into the reduction and melting section, and the controllable melting reduction reaction is carried out with the help of oxygen-rich supplied from the air inlet. Under ultra-high temperature conditions, all inorganic components are completely melted and discharged in liquid form at the bottom of the reactor.Aluminum alloy micro-channel cooling plate vacuum gas quenching Conventional solid waste incinerators mainly include mechanical grate incinerators, rotary kiln incinerators and fluidized bed or circulating fluidized bed incinerators. The fly ash of these furnaces contains a large amount of heavy metals (Pb, Cd, Hg, etc.) and dioxins.Aluminum alloy finned radiator vacuum brazing

Magnesium metal reduction furnace is the core equipment of magnesium production. According to the different fuels used, they can be roughly divided into two categories: reduction furnaces heated by gas or heavy oil and reduction furnaces fueled by coal. Reduction furnace with gas or heavy oil as fuel Reduction furnace with gas or heavy oil as fuel, usually it is a reduction furnace with 16 horizontal tanks. Vacuum Heat Treatment of TV Satellite Antennas This kind of reduction furnace is a rectangular furnace, the center distance between the reduction tanks is about 600mm, the tanks are arranged in a single row on one side, and there are generally many low-pressure burners on the back of the furnace. The flame enters the furnace space from the combustion chamber, bypasses the periphery of the reduction tank, and draws the burned flue gas into the branch flue at the bottom of the furnace by the drawing force of the chimney, and enters the chimney after passing through the flue and the flue gate. The secondary air is sent into the furnace through the secondary air duct through the secondary air duct on the second layer of the furnace bottom. A combustion chamber or a smoke chamber is arranged between the two reduction tanks at the bottom of the reduction furnace. Transformation of hardened carbon steel during vacuum tempering The reduction furnace is both an inverted flame furnace and a heat storage furnace. There are generally 16 reduction tanks made of nickel-chromium alloy steel in the furnace. The 16 reduction tanks are divided into four groups, that is, 4 reduction tanks form a group and are connected to a vacuum unit (the vacuum unit consists of a slide valve pump and a Roots pump), and each reduction furnace is also provided with a spare vacuum unit, so A reduction furnace generally has 5 vacuum units, and each reduction furnace is equipped with a water ring pump as a pre-pumping pump.Microstructure evolution of vacuum tempered low carbon microalloyed steel

(1) The strength of the furnace lining is low, and it is easily damaged by mechanical force during use;5A06 Sheet metal parts vacuum annealing (2) The ability to resist airflow erosion is poor;Vacuum brazing of the rear passage assembly of the flame tube (3) The construction environment is harsh and the quality is unstable due to the influence of human factors, so it is difficult to ensure the effect of the equipment in operation and use.Vacuum Detection Technology of Vacuum Annealing Furnace Castable structure The castable structure is mainly a furnace lining built with refractory materials such as heat-resistant concrete and castables. Its main advantages are good integrity and air tightness of the furnace lining, long life of the furnace lining, easy realization of mechanized construction operations, and high construction efficiency. The disadvantage is that the refractory material must be used within the validity period, and the lining repair is not as flexible as the brick lining.