1800 degree heat heaters

1800 degree heat heaters, the maximum temperature of 1800 degrees, silicon molybdenum rod heating elements of Kanthal, Sweden, the United Kingdom continental control system, work fine, mature technology. Suitable for sintering and other high-temperature reaction. German hot concept industrial furnace industrial furnace company has more than 20 years of design and manufacturing experience, the annual production furnace 400, the product coverage of the heat treatment, casting, ceramics, glass, solar, powder metallurgy and other fields. Temperature range from 50-2200 degrees.
High temperature of 1800 degrees trolley furnace advantages:
High temperature car furnace maximum temperature of 1600 ° C, 1750 ° C and 1800 ° C, respectively.
The standard furnace hot zone 2000 liters.
(3) may be set according to customer needs to configure the components of the furnace, to meet the requirements of precise control of the process.
4 trolleys can be completely removed from the furnace to facilitate the loading and unloading of workpieces.
The sturdy trolley design, high-quality refractory fiber material insulation.
Reinforcement design and manufacture of trolley with good load-bearing capacity.
7 Duplex furnace shell, the cooling system, the low temperature of the furnace shell.
8 high-quality alumina fiber insulation, the heat loss is low, the speed of heating and cooling, the exhaust port is located at the top of the furnace.
High quality molybdenum silicide heating element.
10 side heating, heating demand can also choose to rear and sides on three sides.
11 advanced conversion and control system, thyristor-controlled heating element, precise control, no wear and no noise.

EAF dust removal system on two key issues resolved

First, the dust removal system process
1, widely used in process
An electric furnace exhaust, electric furnace roof airtight cover and factory smoke and secondary refining furnace, feeding system exhaust, fan pressure into an electric furnace dust removal system combines mains gas trapping, dry bag filter dust removal method, negative pressure operation of the process.
2, PLC automatic control
(1) Pulse (set time or differential pressure) cleaning dust.
(2) automatically adjust according to each condition smelting dust trap point wind, air pressure and fan power.
Second, the key technical issues
1, the quality of the filter dust bag
The quality of media choices, decisions of the dust collector running resistance and operating costs, investment costs, directly affecting dust emission concentration.
2, cleaning technology
Cleaning performance has a direct impact on the efficiency filtration rate and bag life.
3, flue gas temperature
Flue gas temperature control directly affect the airtight cover and factory smoke effect roof, furnace, micro vacuum forming and bag life.

Technical specification for safety furnace (fixed hearth chamber furnace)

1, safe, all furnace must have the following components and safety facilities. The outlet temperature of the automatic adjusting means; the feedstock oil automatic control means; furnace, convection, furnace tubes, radiation, temperature indication of the flue;
Population and superheated steam pressure gauge furnace; damper and flue baffle; emergency venting devices; blast doors; hearth and back elbow tank fire steam line.
3. The new furnace according to prescribed procedures must be put into use, the heating curve Ovens.
4. Furnace ignition off good hole, the flue baffle opening to 1/3 1/2, fuel oil systems circulation and circulation of raw materials, ready to soak diesel ignition stick.
5. Ignition steam furnace residue gas rush the net, on the upper end of the burner will ignite ignition rods, others to leave the bottom of the furnace, steam slightly open, and then open the oil line. Point fuel fire, regulate oil and gas than to a normal state.
6. Cited gas off the net water storage and condensed oil and drained in a safe place for more than 15 minutes, the laboratory analysis of the oxygen content of less than 1%, before the vote with the ignition. Gas into the blast furnace must pass the flame arrester.
7. Ignition fireman can not face the fire mouth and see the fire window to avoid tempering wounding. If the flame goes out, the fuel valve should be closed immediately, the furnace domestic demand steam purge in order to re-ignition.
8. Normal operation should always check the stove burning at any time to adjust, pay attention to check whether the tube bending, bubbling, peeling, redness and dark abnormal situation, pay attention to check back elbow, plug, entrances valve flange seamless oil phenomenon, abnormal, and immediately reported to the leadership, to take measures to deal with.
Case of burn-through caused by a ruptured tube furnace of fire or an emergency need into the furnace, the application of steam to put out the fire cooling treatment, no water is injected into the furnace for fire fighting and cooling.
10 into the furnace overhaul should handle into the equipment and operating procedures. Explosion-proof doors shall not be blocked with other objects, so as not to lose the explosion-proof effect.
11. Safety furnace heating or shutdown cooling must be strictly in accordance with the provisions of the heating and cooling rate.
12 emergency shutdown, against only wind instrument used to close the control valve, be sure to close the blast furnace hand valve.
(13) In case of the heating medium interrupts should immediately fire the furnace pass into the steam.

Pre-vacuum chamber furnace

Forvacuum box-type furnace is a single-chamber structure, the workpiece is heated under a protective atmosphere, the temperature of the heating chamber atmosphere heat treatment process is controlled by computer PLC, without manual intervention, will minimize human disturbance factors, is an automated a high degree of heat treatment equipment.
Pre-vacuum chamber furnace design requirements:
Pre-vacuum chamber furnace designed according to customer requirements, mainly used for stainless steel precision castings annealing, the device considers factors:
1. Production capacity: customized according to customer requirements.
2. Operating temperature: commonly used temperature of 850 ° C -920 ° C maximum temperature 950 ° C
3. Smart meter + SCR temperature control system to improve the control precision, saving energy (more than 30% energy saving than the on-off), reducing the impact on power.
4. Additional protection medium injection device and furnace pressure, the injection volume of the dosing medium to protect the workpiece is not oxidized.
5. A four-link door seal structure, with water cooling jacket and silicone rubber sealing device to ensure that the protective gas in the furnace is not compromised, to ensure that the pressure in the furnace, the heat loss is not easy.
6. Using the drag-lift type of materials into and out of institutions, to reduce the weight of the material basket, to improve the life of the material basket, reducing costly heat-resistant steel consumption.
7. Heat-resistant steel mixing fans, the furnace temperature uniformity up to ± 5 ° C (air furnace), to ensure product quality.
8. Imports of the light impervious C brick, heated indoor layer to reduce heat loss, further energy savings.

Trolley furnace overhaul Precautions

1 with corrosive, volatile, explosive gases into the furnace processing of the workpiece is strictly prohibited, so as not to affect the heating elements and refractory life and cause explosions and other accidents.
(2) shall not exceed the furnace temperature operation, otherwise it will shorten the life of the equipment.
3 oxide into the blast furnace of the workpiece to be too clear, available under the wire brush.
4 piece uniform stacking, from the heating element should be around 100-150mm.
5 is strictly prohibited barbaric operation, the workpiece should be light, to avoid shocks.
6 used furnace operator must not leave jobs, you must always pay attention to the working conditions are normal furnace.
7 furnace during loading and unloading the workpiece, you must first cut off the heating element power to ensure operator safety.
8 furnace oxides (including electric wire under) should always be cleaned at least once a week or five times a furnace. Furnace blowing with compressed air under the floor.
9. Resistance wire as it used, you can not bend the collision to avoid breakage.
10 furnace motor requiring regular inspection, lubrication, etc., pay attention to the use of safety.
11 at the shaft sleeve must always check lubrication to prevent damage due to lack of oil and bushings.
12. Periodically check the use of the heating element. The heating element is not kinked short-term use after the collision. If you have not heavily corroded and broken, can be used with the electric wire of the same material (or electric wire itself) as an electrode, the use of acetylene gas for heating welding electrodes using 50% Baiyun powder mixture, if the heating element can not be used when severe corrosion, should be replaced.
13 Regular calibration instruments, thermocouple usage prevent instrumentation, thermocouple temperature measurement errors caused by incorrect affect product quality.

Trolley type PTFE sintering furnace features

1 trolley PTFE sintering furnace insulation properties, the furnace temperature uniformity, set any sintering curve, in the same time, the same temperature value. Furnace temperature error is ± 1 ℃, 1000 hours of operation without time error.
2 stainless steel chamber lining and dial, never rust.
Exhaust purification by activated carbon treatment after discharge pipe, pollution, environmental performance.
Single set of program-controlled sintering Muffle furnace: the preparation of any sintering curve by the sintering process, the device is activated, the rise time and temperature, holding time and temperature constant value characteristics.
Group program-controlled sintering furnace: You can also be incorporated into the sintering curve, according to the the product sintered requirements at any time call.
Network multiple sets of program-controlled sintering furnace: no paper record, may have an infinite set of programming. Record sintering file that can be sustained for one year. Can achieve the sintering furnace running at the same time, and remote control.

Indirect resistance furnaces measurement, control and recording of electric equipment basic technical conditions

1 thermocouple:
Selected by resistance furnace thermocouple should meet its requirements, the indexing should be consistent with the provisions of the relevant national standards, have appropriate protection tube thermocouple, thermocouple wire in order to avoid the impact of media by the furnace. Unless otherwise specified or required (see section 9.2), the length of the industrial resistance furnace thermocouple leads should not be less at 7.5m. The material of the thermocouple leads should be the same as the thermocouple, or use the thermoelectric properties of the thermocouple wire compensation wire.
Two temperature instruments with:
Resistance furnace temperature control area shall be provided with instructions, control and record the temperature of the furnace temperature necessary instrumentation. Temperature meter shall be marked on the indexing number has been equipped with a thermocouple. In addition to making minor adjustments, the thermocouple lead wire or the compensation wire length should not affect the accuracy of the instrument.
3 temperature meter types and their accuracy:
The technical level of resistance furnace with temperature meter divided into the following three categories:
C-level resistance furnace should be equipped with an accuracy of 0.25 or better instrument, the instrument should have automatic compensation of the thermocouple reference junction temperature.
Class B or Class A resistance furnace should be equipped with an accuracy of 0.5 or better instrument.
When otherwise required or demanded (see section 9.2), A-level resistance furnace can also be equipped with an accuracy of one meter.

Industrial oven works

Digital instrumentation through a connection with the temperature sensor to control the temperature, the use of hot air circulating ventilation, air circulation system is divided into horizontal and vertical. Were confirmed by accurate calculation, the wind source is driven by the wind turbine blower motor operation via electric heaters, hot air duct into the oven to the studio, and will use the air intake duct after a re-circulating heated air source use, so can improve the temperature uniformity. Be used as door switch, air circulation system can quickly restore operating state temperature value. Oven structure and working principle:
1, the structure of industrial ovens
Industrial ovens for the inner and outer layer structure, the shell of the angle iron steel sheet, inside and outside the double-shell filled with fibrous material between. Industrial ovens used mostly aluminum silicate fiber material, it can play the role of insulation, forming a reliable insulation. Industrial ovens equipped with hot air circulation system and temperature measurement and control systems.
2, the principle of industrial ovens
Industrial ovens muffle furnace at work, the operator through the meter and temperature sensor to get inside industrial oven temperature value by the control system to operate. Industrial hot air circulation oven heating, cooling and heating mode compared to normal, with better gas flow, can speed up the industrial oven drying rate of the material.
Industrial ovens hot air circulation system consists of blower motor, wind turbine and electric heater components, air motor driven wheel sends cold wind, cold wind carries heat through electric equipment after heating duct into the industrial oven oven studio.
Industrial oven of hot air circulation system can improve the uniformity of the air temperature in the industrial oven door switch during the transportation of materials, the temperature value may be affected by a change in the uniformity of the air circulation system is conducive to the maximum recovery fast degrees operating state temperature.
 

The basic sequence of experimental furnace masonry and methods

Laboratory furnace, furnace masonry and methods of the basic sequence is as follows:
① bottom masonry, including the passage at the end. Qi Hao large brick insulation brick and kaolin after the masonry wall at the inside and outside to relax 30-50mm leveling. Multilayer structure underground masonry elevation negative deviation must be controlled, the bottom of the total thickness tolerances generally-3mm. In the bottom layer of kaolin large brick laying above chrome ramming as a sealing layer to prevent liquid penetration to the corrosion resistance of glass poor clay layer.
② In the bottom steel structure on the basis of acceptance, according to the baseline and experimental furnace construction furnace, furnace centerline release related to feeding port, front and rear bubbling and forming pathway of Taiwan brushed drain board centerline.
③ lifting column. Interim measures to stabilize the column, and then install the ballast ballast according to design requirements angles, columns and ballast ballast angle must be close to the same time determined the exact elevation.
④ masonry wall, including the passage wall. The bottom brick masonry wall must ensure that the level of degree, or to the bottom of the tile area for processing until it reaches the requirements. Multi-wall brick building, the first in the field after the operation to make sure the furnace size, non-timber hewn side facing brick hearth. Masonry joints to be staggered corner pressure, strictly maintain verticality.
⑤ masonry parapet, the front wall, back wall and channel flame space. Masonry parapet bracket should be carefully examined, pallets and bearers installed after passing. Masonry brick and chest wall hooks have taken measures to prevent the dumping of the kiln.
⑥ big arch masonry. Production arch tires, do carry through gantry sedimentation test and check the corresponding size, the big arch masonry to the center from both sides simultaneously, and requires continuous operation, try to control! * + Complete. Large arch insulation layer construction after the end of the kiln to be baked.
⑦ masonry flue, chimney. Kiln debris must be cleared, and with a vacuum cleaner after masonry. Laboratory furnace, furnace flue and chimney masonry, but also compatible with the metal heat exchanger, access paths masonry chimney must be completed before other masonry.
Is there any way masonry kilns?
Masonry method of wet and dry assemble puzzle two ways:
Wet puzzle parts: the Ministry of flames melted the side walls and arch roof space, flue, chimney and furnace insulation bricks, masonry used in the wet mud should be based on material used in the preparation of the corresponding fire clay bricks.
Dry assemble parts: melting section and the bottom path, wall, brick fire space parts of the hook, melting section and flue arch arch bricks, fused brick and path roof tiles.
Well-designed laboratory furnace, furnace, must be carefully masonry, masonry quality for life of the furnace, fuel consumption, glass melting and drawing operations has a significant impact.

Box-type furnace use | resistance furnace Precautions

High temperature box furnace | Furnace Products
High-temperature box furnace |, resistance furnace shell is made of high-quality cold-rolled steel plate, the surface coating process, over the door using the door structure, flexible opening and closing.
High temperature box furnace | Furnace NOTES:
1. The first time or again after long-term use should be disabled for oven temperature 200 ~ 600 ℃, time of about 4 hours.
(2) When used shall not exceed the maximum temperature furnace temperature, and do not work long hours at the rated temperature or more.
(3) Operating environment No flammable materials and corrosive gases.
4 To ensure your safety, you must install the ground, and well grounded.
5 Use the light off when the door opened to light, to prevent damage to the parts.
6 in the furnace to take samples, you should first turn off the power, and gently, in order to ensure safety and to avoid damage to the furnace.
7 To extend product life and ensure safety, use of the muffle furnace device should be promptly after the end of the sample was removed from the furnace exit the heating and power off.
8 regular watch on local conditions and the combustion gas pressure;
9 - Open the door can not stand them, to prevent the flame jet burns;
10 Note whether the combustion burner into sections and wedge the door with torches check for leaks;
11 found in the work burner flame goes out, you should immediately turn off the gas valve, close the air valve;
12 working parts from falling or wedge the door switch not working, you should stop feeding, remove the parts.