Heat treatment mesh belt furnace has been widely used in fasteners, bearings, transmission parts and other mechanical parts. With the improvement of the manufacturing technology level of mesh belt furnaces and the requirements of energy saving, the heating method of the third generation product of mesh belt furnaces - stick-type mesh belt furnaces has developed from heating by metal electric heating elements to heating by gas. The heat generation device of the electric heating mesh belt furnace usually adopts a radiant tube, which is composed of a metal outer tube and a built-in squirrel-cage heating element. Depending on the operating temperature, the material used in the radiant tube is also different.Stainless steel vacuum brazing process The heating element with built-in squirrel-cage structure is composed of metal electric heating elements and corundum insulating ceramic sheets. The metal heating element is a resistance wire, and its commonly used materials are nickel-chromium alloy wire and iron-chromium-aluminum alloy wire. After the nickel-chromium alloy wire is heated in the air, a layer of hard Crz03 protective film is formed on the surface and adheres to the alloy substrate. The melting point is higher than that of the alloy substrate. It can withstand alternating heating and cooling and has strong corrosion resistance.Vacuum Brazing Repair of Ni-based Turbine Blades The heat generation device of the gas heating mesh belt furnace is commonly known as the gas burner. For the convenience of use, maintenance and energy saving, the high-speed burner enables the fuel and the combustion-supporting air to be completely burned in the combustion chamber. Spray into the furnace at a high speed, strengthen the convective heat transfer to the workpiece, promote the circulation of the air flow in the furnace, and achieve the purpose of uniform furnace temperature and improved heating effect.X6132 X6140 HORIZONTAL LIFTING TABLE MILLING MACHINE The control of the gas burner is more complicated than that of the electric heating radiant tube. It needs to complete the flame detection in the furnace, automatic ignition control, gas supply control, combustion air control, etc. The combustion system adopts a ratio valve control method to make the gas/air ratio the best and reduce excess air.X6230 SERIES UNIVERSAL SWIVEL HEAD MILLING MACHINE

1. When the electric furnace is used for the first time or is used again after long-term inactivity, it must be dried in an oven. Oven temperature and time: Room temperature - 300°C for 4 hours Open the furnace door to evaporate most of the moisture in the furnace. 300°C--800°C rapid temperature rise, close the furnace door. 800℃--1000℃ for 3 hours Open the furnace door regularly until there is no moisture in the furnace door.HORIZONTAL MITRE BAND SAW MACHINE BS-215G 2. When the electric furnace is used, the input power must not exceed the rated power, and the furnace temperature must not exceed the rated temperature, so as not to damage the heating element and inner furnace lining. It is also forbidden to directly pour liquid and molten metal into the furnace. Regularly clean the iron filings and oxides in the furnace to keep the furnace clean. 3. Silicon-molybdenum rods are suitable for use in air and neutral atmospheres (such as inert gases). Reducing atmospheres such as hydrogen will destroy the protective layer, and chlorine and sulfur vapors will severely corrode silicon-molybdenum rod components.HORIZONTAL MITRE BAND SAW MACHINE BS-260G 4. Silicon-molybdenum rods should not be used for a long time in the temperature range of 400°C to 700°C, because the silicon-molybdenum rods will be oxidized and destroyed in this temperature range.CVD Diamond Tool Brazing 5. Regularly check whether the electric furnace and the connection parts of the conductive system of the temperature controller are in good contact. (Special attention should be paid to the connection point of silicon molybdenum rod heating element.)Influencing Factors Of 20CrMnTi Gear Vacuum Carburizing And Quenching Deformation

The focus pusher is made of Q345-B material, with water cooling wall; it is made of 16Mo3 material, without water cooling wall. Since the coke pusher is the core component of the coke pusher equipment and even the entire coke oven machinery, if the design structure of the coke pusher is unreasonable or the material is improperly selected, the entire coke discharge process will be affected. Therefore, it is very important to choose the structure and material of the focus pusher reasonably. The design structure, material and advantages and disadvantages of the two focus pusher rods are introduced below.Influencing Factors Of 20CrMnTi Gear Vacuum Carburizing And Quenching Deformation The design concept of Yankuang 7.63m coke oven machinery is environmental protection, structural optimization and energy saving. Therefore, the coke pusher they designed is a cooling wall structure, that is, the coke pusher is cooled by circulating water, so that the coke pusher will not be thermally deformed and cracked due to excessive temperature in the carbonization chamber. The body material of the focus pusher is Q345-B, and the structure is a box beam type with water cooling walls on both sides.CVD Diamond Tool Brazing Because there is a cooling water system in the coke pushing system to meet the supply of circulating water in the cooling wall of the coke pushing rod, 2 sets of water pumps are needed to provide power, and cooling water heat exchangers, support chains, special heat-resistant rubber hoses, and control valve groups are also required Wait. Due to the extremely complex external structure of the water system and the high performance requirements of each part, the cost of the entire equipment is greatly increased, and it brings a lot of inconvenience to daily maintenance.VERTICAL METAL BAND SAWING MACHINE The main advantage of this structure is that the material of the main body can be ordinary carbon steel Q345-B, which is easy to purchase and low in cost; in addition, the structure of the water-cooled wall can relieve the pressure of the coke pusher due to sudden cooling under different external temperatures. Thermal deformation and cracks due to sudden heating.VERTICAL METAL BAND SAWING MACHINE

MBZ direct-type coal-fired hot air stove is composed of MBL coal-burning machine, high-temperature gas purification room and air mixing room. This device uses a coal-fired machine as the first-level heat supply. The raw (bituminous) coal is added to the coal hopper at one end of the coal-fired machine through the coal feeder, and the coal seam of a certain height is fed into the coal-fired machine at a uniform speed by the chain grate. In the combustion chamber, under the action of the combustion-supporting fan, the high-temperature flue gas generated by coal combustion is ejected from the side fire outlet of the coal-fired machine into the high-temperature gas purification chamber. VERTICAL METAL BAND SAWING MACHINE CV SERIES The high-temperature gas purification chamber is made of refractory materials, and the high-temperature flue gas undergoes secondary combustion in the purification chamber, and a small amount of dust entrained during the coal combustion process is polymerized and settled in the purification chamber by high temperature. The clean hot air (~1000°C) coming out of the purification room is mixed with a certain amount of cold air, and mixed to form hot air at the temperature (200-300°C) required for material drying, which enters the spray tower to dry the material (papermaking black liquor). VERTICAL LONGITUDINAL CUTTING PULLEY TYPE METAL BAND SAW MACHINE G53 SERIES The temperature of the hot air can be adjusted according to the needs of the process, and the temperature stability of the continuous hot air is ±5°C. The burnt coal slag is discharged from the other end of the coal burner to the slag discharger, and sent out through the automatic scraper slag discharger.Heat treatment process of gear vacuum carburizing and quenching Environmental protection up to standard, no secondary pollution, clean operating environment; high cleanliness of hot air, dust content <120mg/Nm3, no open flame in hot air; high thermal efficiency >95%;What needs to be done for heat treatment with vacuum oil quenching furnace?

The new resistance furnace with full-fiber overturning trolley is a new type of product developed for the traditional brick resistance furnace, which generally has high energy consumption, low production efficiency, easy damage, poor temperature control accuracy and inconvenient loading and unloading. TG-380 HIGH PRECISION THREAD GRINDER The full-fiber lining structure is adopted, which has excellent energy-saving performance. Compared with the brick resistance furnace of the same specification, it can save energy by about 30%, double the heating speed, and has good heat preservation performance. The full-fiber structure has good thermal shock stability and is resistant to rapid heat and rapid cooling.5-AXIS CNC TOOL GRINDING MACHINE – TG560 & TG580 1. The furnace body adopts all-fiber folding block pasting technology, which is strong and durable, and there is no problem of fiber shedding that people worry about, and the service life is much higher than that of brick furnaces. 2. The seal between the furnace body and the trolley adopts a mechanical movable sealing structure device, and the seal is reliable.Ingot bottom vacuum heat treatment 3. The new type of all-fiber furnace lining directly hangs wire (or strip) structure, which improves the radiation coefficient of the heating element, strengthens the heat exchange in the furnace, improves the thermal efficiency of the furnace, and prolongs the service life of the element. The electric heating elements are grouped and hung on the fixed hooks on the furnace wall, which is very convenient to install. When the electric heating elements are repaired, they can be directly welded and replaced at a position that can be seen and touched, which is very convenient. This new installation method of the electric heating element eliminates the method of supporting the wire bricks, avoids the problem that the furnace wall needs to be removed for overhaul due to the breakage of the wire bricks, and improves the service life of the equipment.CVD Diamond Tool Brazing

Tube furnaces are mainly used in metallurgy, glass, heat treatment, lithium battery positive and negative materials, new energy, LED luminescent materials, abrasive tools and other industries to measure materials under certain atmosphere conditions.What you need to know about thermocouple of vacuum furnace The tube furnace is protected by hydrogen filling after vacuuming, and uses the principle of medium frequency induction heating to generate high temperature in the tungsten crucible in the coil tube, and conducts it through thermal radiation. Powder forming and sintering of tungsten, molybdenum and their alloys.D2020-2 CNC DRILLING MACHINE FOR STEEL PLATE 1. After the tube furnace is used for the first time or not used for a long time, it should be baked at a temperature of about 120°C for 1 hour, and then used at a temperature of about 300°C for 2 hours to avoid cracking.HD6040-1 CNC GANTRY MOVABLE HIGH SPEED DRILLING MACHINE The furnace temperature should not exceed the rated temperature as far as possible, so as not to damage the heating element and furnace lining. It is forbidden to directly inject various liquids and dissolved metals into the furnace, and keep the furnace clean.What needs to be done for heat treatment with vacuum oil quenching furnace?

The heat pump dryer uses the reverse Carnot principle to absorb the heat of the air and transfer it to the warehouse to increase the temperature of the drying room, and cooperate with the corresponding equipment to realize the drying of the material. The heat pump dryer consists of a compressor-heat exchanger (inner unit)-throttler-heat absorber (outer unit)-compressor and other devices to form a cycle system. The refrigerant circulates in the system under the action of the compressor.What you need to know about thermocouple of vacuum furnace It completes the gaseous boosting and heating process in the compressor (temperature up to 100°C), it enters the internal machine and releases high-temperature heat to heat and dry the air in the room, and at the same time it is cooled and transformed into a liquid state, when it runs outside After cooling down,What needs to be done for heat treatment with vacuum oil quenching furnace? the liquid state quickly absorbs heat and evaporates and turns into a gaseous state again, and at the same time the temperature drops to minus 20°C - 30°C. At this time, the air around the heat absorber will continuously transfer heat to the refrigerant. The continuous circulation of the refrigerant can transfer the heat in the air to the drying room to heat the air temperature in the room.D2020-2 CNC DRILLING MACHINE FOR STEEL PLATE It adopts embedded installation and is integrated with the warehouse, which is easy to install and easy to maintain. It adopts the design of multi-fan and large air volume, which can provide even air supply and better drying effect.HD6040-1 CNC GANTRY MOVABLE HIGH SPEED DRILLING MACHINE

Basic inspection: Firstly, the sundries on the foundation should be removed, and a temporary and reliable fence should be erected on the edge; level gauges for measuring elevation, Ф0.5mm steel wire, wire hammer, What needs to be done for heat treatment with vacuum oil quenching furnace?ink fountain and adjustable brackets for pulling steel wire ropes should be prepared; foundation center given by civil engineering line position, check whether the vertical and horizontal centerlines are vertical.ZNC EDM HOLE DRILLING MACHINE After the center line meets the requirements, use a hammer to cast the center position on the foundation embedded part or the foundation edge angle iron frame, and mark it; Pressureless Sintering of Silicon Carbide Ceramics according to the foundation center line, check the actual position and center deviation of the anchor bolts and each positioning embedded part No more than 2mm, record the inspection results in the installation record; HIGH-EFFICIENCY FAST WIRE CUTTING EDM MACHINE clean the anchor bolts, measure the verticality deviation of the bolt holes should be <L/450; and the elevation of the settlement observation point, and make a record; check the shape and size of the foundation and the shape and size of the hole, which should meet the design requirements; check that the surface of the foundation should be free of defects such as pockmarks, honeycombs, cracks, holes, and exposed ribs.

The main task of the aluminum alloy smelting furnace is to efficiently melt aluminum ingots, scrap and other furnace materials to prepare aluminum alloys. The development history of aluminum alloy smelting furnace is actually the history of continuous improvement and improvement of furnace efficiency in view of existing problems. The basic requirements for modern aluminum alloy melting furnaces are: 1) Good thermal performance. That is, the melting speed is fast, the thermal efficiency is high, and the fuel consumption per unit output is small.HIGH SPEED CIRCULAR SAWING MACHINE HY-100NC 2) Good operability. That is, the furnace temperature is uniform, the furnace temperature, furnace pressure, and furnace atmosphere can be easily adjusted and controlled, and the charging and stirring are easy to realize mechanized operations, and the adaptability to fuel changes is strong.HIGH SPEED CIRCULAR SAWING MACHINE HY-120NCC 3) High cost performance. That is to say, the equipment occupies a small area, the equipment investment per unit output is low, the service life is long, the maintenance cost is low, the metal loss is small, and the fuel used is cheap and easy to obtain.Deformation correction of 20CrMo steel plate by vacuum carburizing and quenching 4) Environmental protection and safety. That is, the equipment has low noise, good furnace sealing, good smoke exhaust, and good operating environment; the equipment must have reliable safety guarantees in the process of ignition, combustion, and flameout.What you need to know about thermocouple of vacuum furnace

Gas industrial furnace is a complex thermal equipment. It generally consists of the following parts: furnace, gas combustion device, flue gas exhaust device, furnace door and lifting device, metal frame, various auxiliary equipment (such as waste heat utilization device, various measurement control and adjustment devices, etc.).HORIZONTAL METAL BAND SAWING MACHINE The furnace is the core area of the gas industrial furnace. It is a place where the gas can be stably burned, and the heated workpiece can directly or indirectly exchange heat with the high-temperature flame and flue gas.CS SERIES SCISSOR TYPE METAL CUTTING SAW CS-220 The hearth is made of refractory materials and is a closed space surrounded by furnace walls, furnace roof and furnace bottom (including foundation).The side brickwork of the furnace is called the furnace wall. What you need to know about thermocouple of vacuum furnace It is required to have sufficiently high refractoriness and qualified heat insulation performance. The interior of the furnace wall is built with refractory clay bricks, plus a heat insulating layer, and the outer surface is covered with a steel plate shell with a thickness of 4 to 10 mm.What needs to be done for heat treatment with vacuum oil quenching furnace?

At present, aluminum alloy has the largest number of die castings. It has light weight, high specific strength, high mechanical properties and corrosion resistance, etc. However, compared with zinc alloy, its casting performance is relatively poor, and it has a tendency to stick to the mold. , it is more likely to produce defects such as oxidation, gas absorption, segregation, slag inclusions, and large crystal grains during smelting. Iron is a harmful element in aluminum alloys, but when the iron content in aluminum alloys is lower than 0.6%, it will be damaged during the production process. Die sticking is easy to occur in the medium, and when it is higher than 1%, the mechanical properties of the alloy will be reduced. The reasons for the "iron increase" of aluminum alloys mainly come from three aspects:Deformation correction of 20CrMo steel plate by vacuum carburizing and quenching 1) During the smelting process, there are many opportunities for contact between iron and alloys, such as crucibles, iron spoons, ladles, smelting tools, etc., and their surfaces should be coated with paint.What you need to know about thermocouple of vacuum furnace 2) The dissolution rate of iron in molten aluminum alloy increases with the increase of temperature. When the melting temperature of aluminum alloy is higher than 750°C, it is called "overburning of aluminum alloy". At this time, the dissolution rate of iron increases rapidly.GP-32 ECCENTRIC SHAFT CRANKSHAFT SPECIAL-SHAPED LONG SHAFT GRINDER 3) In addition to the temperature factor, the iron increase in aluminum alloy is also related to time, that is, the longer the holding time, the more iron is added, and the air intake is also increased. All are beneficial.WHEEL GRINDER MOBILE PROGRAM CONTROLLED (CNC) CYLINDRICAL GRINDER

According to the furnace temperature system, it can be divided into a heating period and a preheating period. The furnace is also divided into a heating section and a preheating section accordingly. The small furnace for heating thin materials is also heated on one side. U1 UNIVERSAL MILLING MACHINE Generally, it is heated on both sides. When burning coal, there is a combustion chamber at the end, which is called the head furnace, and the combustion chamber for lower heating is located on both sides, which is called the waist furnace. For heavy oil or gas stoves, burners are installed on the upper and lower end walls, and sometimes burners are also installed on the side walls.SU1 UNIVERSAL MILLING MACHINE When the thickness of the billet is not large, a two-stage furnace can be used, but when the end face of the billet is thick, the temperature difference between the inside and outside is relatively large after heating.What you need to know about thermocouple of vacuum furnace In order to eliminate the temperature difference, the heating time must be extended, but it is limited by the surface temperature of the material. If the surface temperature is too high, heating defects will occur. At this time, the two-stage continuous heating furnace cannot meet the requirements.What needs to be done for heat treatment with vacuum oil quenching furnace?

The utility model provides an automatic loading and unloading layered curing furnace, which comprises a layered curing furnace, an automatic feeding module located at the front end of the layered curing furnace and an automatic unloading module located at the rear end of the layered curing furnace; BL SERIES HIGH PRECISION CNC LATHE the layered curing furnace includes The frame body is equipped with multi-layer parallel baking chambers, and the heating device and temperature control device are arranged in the baking chamber, and the front end of each layer of baking chamber is provided with an independently controlled feeding furnace door ,SWD SERIES PLC CONTROL 3D BEAMS DRILLING MACHINE the rear end of each layer of baking cavity is provided with an independently controlled discharge furnace door; when feeding, the feeding furnace door is opened, and the automatic feeding module places the material in the baking cavity, and the feeding furnace door Close; when the material is baked in the baking cavity, Heat treatment process of gear vacuum carburizing and quenching open the discharge furnace door, and the automatic unloading module will take the material out of the baking cavity; each layer is fed and discharged according to this action. Adopting the technical scheme of the utility model, the multi-layers are loaded and discharged in turn for baking, which greatly improves the efficiency and reduces the cost; the structure is simple and convenient for implementation.Deformation correction of 20CrMo steel plate by vacuum carburizing and quenching

This calciner is developed on the basis of summarizing the rich experience of many out-of-kiln decomposition methods. It is formed by adding a TSD calciner between the kiln and the C5 cyclone. It mainly consists of the swirl pre-combustion chamber, the main furnace and the ascending pipe to form the calciner area.CS61/6250 SERIES UNIVERSAL LATHES There is a shrinkage between the kiln tail smoke chamber and the main furnace to balance the pressure between the kiln and the calciner. The wind speed at the constriction can generally reach 30-50 m/s, and the negative pressure is 0.8-1.0 kPa. CS6250B UNIVERSAL LATHES The tertiary air drawn from the cooler enters the furnace at a certain speed from the upper part of the pre-combustion chamber in a tangential direction. The raw material coming down from the C4 cyclone is fed into the airflow before the tertiary air enters the furnace, and a spreader is installed there to make the air and material mix into the furnace.What you need to know about thermocouple of vacuum furnace Intense vortex motion is generated inside it, and due to the centrifugal force, the central part of the pre-combustion chamber becomes the equilibrium phase area of the material concentration, and the peripheral part becomes the dense phase area of the material.What needs to be done for heat treatment with vacuum oil quenching furnace?

The heating furnace is divided into: a preheating section, a heating section, a heating section, and a soaking section; the segmentation method is to divide the furnace into four sections along the length direction. Each heating section is composed of upper heating and lower heating, that is, when adjusting the furnace temperature of each heating section, adjust the upper and lower burners at the same time.Vacuum Quenching Technology of Aluminum Extrusion Die According to production needs (such as output, heating process requirements, etc.), the temperature of the heating section, the heating adjustment and control of the second section and the soaking section. The heating furnace is controlled by: through the temperature of the temperature control instrument (or manual adjustment). The temperature controller automatically adjusts the opening of the electric butterfly valve on the air main pipe to adjust the air pressure (and adjust the air flow accordingly).XK7126 XH7126 CNC MILLING MACHINE The air pressure is transmitted to the air/gas proportional valve by the pressure signal collected by the copper tube. Through the function of the proportional valve, it is directly adjusted according to the natural gas flow rate with a reasonable air-fuel ratio to realize automatic control of the furnace temperature.XK7132A XH7132A CNC MILLING MACHINE CENTER Check whether the valves before each burner (natural gas regulating valve and air butterfly valve) are open or closed. Release and make sure all natural gas regulator valves (main control valve and front nozzle control valve) are fully closed. Check to make sure the front of the burner is clear of debris and blockages.XK7136 XH7136 CNC MILLING MACHINE

The equipment is widely used in decorative glass, craft glass, daily-use glass, home appliance glass, lighting glass, glass handicraft and other glass industries. By adjusting parameters, it can achieve continuous hot bending, hot melting and embossing of glass with different thicknesses with high precision.HIGH SPEED CIRCULAR SAWING MACHINE HY-75NC The working principle of this equipment is to arrange the mold, place the glass, put it into the furnace from the inlet, and get out of the furnace from the outlet, that is, a furnace of standard hot-melt and hot-bending glass products is obtained.HIGH SPEED CIRCULAR SAWING MACHINE HY-85NC The equipment is divided into four parts: feeding area, heating and forming area, cooling area and discharging area. The furnace body adopts steel structure, and high-grade insulation cotton insulation bricks and other insulation materials are used in the furnace. The temperature of the whole machine is controlled by a microcomputer temperature controller and a thyristor voltage regulator module, and its power system adopts frequency conversion speed regulation, and the track step is even and stable.Heat treatment process of gear vacuum carburizing and quenching The equipment is designed as a circular structure, so that the longest track length can be set in the smallest space, thereby greatly reducing the space occupancy rate of the equipment and improving the space utilization rate.Deformation correction of 20CrMo steel plate by vacuum carburizing and quenching

The main advantage of electric heating hot water boiler is environmental protection. Since the fuel of the product is electricity, there will be no pollution, and no nitrogen oxides will be produced, so it is an environmentally friendly boiler product, and the degree of environmental protection is zero pollution.Vacuum Quenching Technology of Aluminum Extrusion Die Electric heating hot water boiler has high thermal efficiency, its thermal efficiency is above 98%, and thermal efficiency is an important reference factor in boiler products. The improvement of thermal efficiency can save fuel and reduce operating costs. The computer control cabinet adopted has an intelligent operating system, and is equipped with virtual keys, LCD display and electronic version of the operation manual, etc., and the boiler can be controlled through buttons, which is intelligent and easy to operate.Research on Properties of H13 After Vacuum Nitriding The electric heating hot water boiler has scientific design, reasonable shape, beautiful appearance, and less auxiliary equipment, which does not take up too much space.HIGH SPEED CIRCULAR SAWING MACHINE HY-75NC Electric heating hot water boilers have many advantages, but they also have corresponding disadvantages, that is, their operating costs are relatively high. For example, a 0.7MW (1 ton) electric heating hot water boiler needs to consume 700 kWh of electricity per hour.HIGH SPEED CIRCULAR SAWING MACHINE HY-85NC

Industrial Electric Boiler A boiler is a mechanical device that uses heat from fuel or other energy sources to heat water into hot water or steam. The original meaning of the pot refers to the water container heated on the fire, and the furnace refers to the place where fuel is burned. The boiler includes two parts: the pot and the furnace.J2 AIR CONDITIONER REFRIGERATOR COMPRESSOR CRANKSHAFT GRINDER The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power plant, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used in daily life, and also have a small amount of application in industrial production. GP-32 ECCENTRIC SHAFT CRANKSHAFT SPECIAL-SHAPED LONG SHAFT GRINDER Boilers that generate steam are called steam boilers, often referred to as boilers for short, and are mostly used in thermal power stations, ships, locomotives, and industrial and mining enterprises.Boiler parameters are the main indicators of boiler performance, including boiler capacity, steam pressure, steam temperature, feed water temperature, etc. Boiler capacity can be expressed by rated evaporation or maximum continuous evaporation. Heat treatment process of gear vacuum carburizing and quenching 3The rated evaporation capacity is the amount of steam produced continuously per unit time under the specified outlet pressure, temperature and efficiency. The maximum continuous evaporation capacity is the maximum continuous steam production per unit time under the specified outlet pressure and temperature.Deformation correction of 20CrMo steel plate by vacuum carburizing and quenching

Clean heat recovery coke oven The clean coals of different varieties and qualities are stacked separately in the coal yard, and the coking coal is pushed into the respective coal receiving pits by a forklift according to the operation regulations, and the coal blended in the coal receiving pits is transported by the belt conveyor to the impact blow hammer mill. Before entering the pulverizer, go through the electromagnetic iron remover to remove the metal impurities in the coal. In the impact blow hammer mill, the mixed coal is crushed to a qualified particle size of less than 3mm, reaching 90%. The crushed qualified coking coal is transported by belt conveyor to the coke oven coal tower for storage for coking.What needs to be done for heat treatment with vacuum oil quenching furnace? There is a tamping station under the coal tower. When the coke oven uses coal, it is directly loaded into the hopper of the distributing trolley from the nozzle of the coal tower. The capacity is about 1/2 the weight of coal cakes. The chute puts the coal evenly into the tamping coal box, and tamps the coal into briquettes. Coal cake density 1.1-1.2t/m3.Pressureless Sintering of Silicon Carbide Ceramics The crushed briquettes are sent to the coal loading car together with the coal box, and are transported to the carbonization chamber to be released from the oven. After the coke push rod pushes out the mature coke in the carbonization chamber, quickly close the furnace door on the coke side, push the briquettes together with the coal box into the carbonization chamber, then lock the baffle at the end of the briquettes on the furnace mouth, and pull out the coal-charging truck , quickly turn off the machine side furnace.Prevention method for grinding cracks of vacuum carburizing and quenching gears Since the side wall of the carbonization chamber and the furnace bottom flame passage have a certain amount of heat, part of the coking coal is heated to precipitate raw gas. There are adjustable primary and secondary air inlets and regulating devices on the vault and the furnace wall. The combustion of air and raw coal gas generates heat to heat the furnace roof, and the briquettes are heated through heat conduction and heat radiation.Pit Type Furnace Nitriding Process And Operating Procedures

Electric heating mesh belt furnace The heat generation device of the electric heating mesh belt furnace usually adopts a radiant tube, which is composed of a metal outer tube and a built-in squirrel-cage heating element. Depending on the operating temperature, the material used in the radiant tube is also different. The metal outer tube material of the quenching furnace radiant tube is SUS310S, and the maximum service temperature can reach 1 200 ℃;Improvement of Machinability of Parts by Vacuum Heat Treatment the metal outer tube material of the tempering furnace radiant tube is SUS304, and the maximum service temperature can reach 800 ℃. The heating element with built-in squirrel-cage structure is composed of metal electric heating elements and corundum insulating ceramic sheets. The metal heating element is a resistance wire, and its commonly used materials are nickel-chromium alloy wire and iron-chromium-aluminum alloy wire.Research on Properties of H13 After Vacuum Nitriding After the nickel-chromium alloy wire is heated in the air, a layer of hard Cr, 03 protective film is formed on the surface and adheres to the alloy substrate. The melting point is higher than that of the alloy substrate. It can withstand alternating heating and cooling and has strong corrosion resistance. Good mechanical properties at high temperature, easy to process and weld at room temperature, high resistivity, small temperature coefficient of resistance, and stable power. Cr20Ni80 alloy wire is commonly used in quenching furnaces, which contains more nickel, and its price is higher than that of iron-chromium-aluminum alloy wire.SX2 MINI MILL DRILL The melting point of iron-chromium-aluminum alloy wire is higher than that of nickel-chromium alloy wire, and a layer of hard Al,03 protective film is formed on the surface after heating in air, and its melting point is higher than that of the alloy body. Iron-chromium-aluminum alloy wire has high resistivity and small temperature coefficient of resistance, but it is brittle, has poor processability, low strength at high temperature, and easily deforms and collapses components. Therefore, it is often used in tempering furnaces, and OCr25Al5 alloy wire is commonly used.SX2L MINI MILL DRILL