2013年9月28日星期六

Laboratory furnace

Introduction to laboratory furnace
The quality aluminum silicate fiber, state-of-the-art vacuum molding process and automatic control technology to develop a set of energy-saving, efficient, beautiful and one of the new laboratory furnace. Department of laboratory furnace cycle mode of operation energy-efficient furnace, heating up fast, make no use of small, good temperature uniformity, for laboratory, industrial and mining enterprises for the metallic elemental analysis and general metal heat treatment.
Laboratory vacuum features
1, silicon carbide lining, all-fiber insulation.
 2, laboratory furnace hearth material made of ceramic fiber, thermal capacity is small, fast heating (30 minutes to reach the set temperature), short cycle, saving energy (energy-saving effect is plain old furnace 80? Above).
 3, the use of intelligent digital programmable temperature controller, the preparation of multi-liter, security, cooling curve, automatic heating, insulation, cooling and over-temperature protection, the end of the program to run automatically stop without duty.
 4, high temperature resistance wire heating element placed in the furnace wall heating plate, easy to use, safe Shallow.
 5, can be configured programmable temperature control and other RS485 interface can be configured, remote control and data acquisition laboratory electric furnace. Or configuration circle diagram to adjust the recorder track record of the heat treatment process.

2013年9月26日星期四

Box furnace (muffle furnace) Precautions

Because box furnace (muffle furnace) products are high fever, so in daily use must pay attention to the safety of life and property of the State Security.
One would be automatic temperature controller flat on a smooth place'' not'' in order to avoid too close from EAF furnace heat affect electronic components'''' and then remove the short route to the furnace with the power cord into an electric furnace and then'' to the power cord connected to AC 220V'' and furnace controllers are effective electrical connection.
Two. Thermocouple with a wire connected to a temperature controller'' Note'' ± pole can not be wrong check again whether there is installed an error.
Three would be the thermostat to the desired temperature'' connected control box "type" of power'''' At this point turn the power switch into the red light green light to start work.
Four when the muffle furnace first time or long-term disabled again after use and must be oven dried.
Note:
Installation of all electrical distribution equipment and instrumentation through checks and adjustments'' and check the furnace and the voltage is normal'''' has good contact with the maximum temperature never exceeds the limit temperature series product configuration object'' to take the furnace must be cut off power to ensure safety'' furnace should be placed in a dry place to prevent moisture'' use'' leakage and cracking caused by heating refractories such as automatic temperature controller needs to swap places'' need'' to connect the console to avoid damage to the short route vibration meter.

2013年9月23日星期一

Trolley type gas roaster

Trolley type gas roaster advantages:
Trolley type gas roaster pumping gas the hearth the trolley flame furnace, to imported industrial furnace equipment features, by our factory according to China's national conditions and usage, performance and technology to further improve the success of research and development, has now been dozens of home users successfully used for many years, the Practice has proved that this technology is very mature, according to user feedback, it shows significant power savings, temperature uniformity, environmental cleanup, easy maintenance, etc. Compared with the original conventional furnace. The car-type flame gas roaster eruption heat up down the middle of the flue rotation in the case of the top of the arc discharge design, effective control of the temperature uniformity and heat utilization. The furnace by the furnace (including lining) door, furnace vehicles, combustion systems, exhaust systems, sealed, temperature control and records and other major components.
Trolley type gas roaster structural features:
1, trolley type gas a roaster furnace body skeleton by a variety of large and medium-sized steel-site combination welded the shell closure plate color plate overall rugged beauty.
2, trolley type furnace lining the mullite refractory fiber insulation, about 60% of energy relative brick hearth.
3, trolleys skeleton by the combination of a variety of large I-beam, channel steel, angle steel and thick steel plate welded together. Trolley drive motor, worm gear reducer combination through the chain-driven front-end capstan drive. Trolley the refractory masonry the high alumina stereotypes brick structure, the furnace sealing effect, high compressive strength. Trolley and the furnace is sealed with a soft touch, and the lower part of the trolley a labyrinth sand seal groove and sand seal knife sealing device.
3, car type gas roaster oven door with side opening, simple and convenient, sealed with hand wheel clamping mechanism.
4, the combustion system: the installation on both sides of the car-type gas roaster dozens of small burner, multi-burner small heat flow in the furnace cycle back and forth to ensure temperature uniformity. Burning Tsui automatic ignition, instrument control.
, Smoke devices: upper end of the furnace exhaust device, the installation of an adjustable valve plate, the valve can adjust the pressure in the furnace.
6, the control system uses a simple and practical chain control, digital table shows the temperature and contactor control.

2013年9月18日星期三

Industrial furnace repairs

Industrial furnace repair machinery thermal processing plants mostly in the 650 ℃ -1700 ℃ of temperature, therefore, bear masonry industrial furnaces and furnace heat ablation sudden change of temperature effect.
Of furnace gas and molten slag chemical attack and a variety of materials, high-temperature air and the molten metal impact wear, a combination of factors which accelerate the industrial furnace damage. Therefore, compared with the general cold equipment, industrial furnace technical condition prone to change, life is short, repair more times.
In general machinery plant, the number of industrial furnaces, while small, accounting for the total number of devices 5% -8%, but the annual overhaul Number of units Number of units accounted for all the equipment overhaul 16% -20%.
As we all know, cast iron with a cupola furnace will be carried out for each open one day a small repair; forging furnace, then at least once a year to overhaul.
Industrial furnace repair so many times, fast changes in working conditions at the plant in addition to the individual foundry equipment (such as molding machine, shot blasting machine, etc.), the fear in the number of all types of equipment to be "among the best."

2013年9月16日星期一

Low-temperature box furnace

Introduction to the low-temperature box furnace
Uses: mainly used steel workpiece quenching, normalizing, annealing conventional heat treatment with special equipment.
Features:
1. Electric furnace loading capacity, high productivity, especially for small and medium-sized mechanical heat treatment heating, energy saving up to 20%, temperature uniformity, the DRO automatically furnace temperature control, high precision;
2. Electric furnace installed Imperial material, operating conditions;
3. The seal of the door and the furnace for self-sealing, without manual sealing
4. The electric furnace has interlock protection device to prevent misoperation due to failures and accidents;

2013年9月13日星期五

Vacuum atmosphere box furnace

Vacuum atmosphere box furnace uses:
Vacuum atmosphere box furnace according to customer needs all kinds of furnaces, universities, research institutes, industrial and mining enterprises to meet the high temperature sintering, metal annealing atmosphere reduction and quality testing is widely used in materials, physics, chemistry, metallurgy, chemical industry, new energy development and other fields.Vacuum atmosphere box furnace hearth Imported insulation material - high purity polycrystalline alumina fiber, the use of B-type double platinum and rhodium thermocouple temperature and AL artificial intelligence regulator 708P temperature controller automatic temperature control, using artificial intelligence AL adjustment algorithm, no overshoot, industrial-grade single-chip microprocessor, four and a half A / D conversion and digital correction, filtering technology to ensure measurement accuracy of up to 0.2 (± 1 ° C). Furnace shell with double ventilation design, so that the furnace can be rapidly cooling the door using circulating water to ensure that the door is not deformed in the first heat quenched, thereby ensuring air tightness of the furnace, the furnace can work in a multi-atmosphere, improve its scope of use. S of the epoxy-based resin paint made from galvanized stainless steel inside and outside the box, the outer coating of high hardness, attractive appearance, practical.
Vacuum atmosphere furnace features:
1, the control precision: ± 1 ° C furnace temperature uniformity: ± 1 ° C (depending on the size of the heating chamber may be).
2, microcomputer control, easy to operate, programmable, automatic heating, automatic insulation, automatic cooling.
3, fast heating (heating rate of 20-40 ° C / min adjustable).
4, energy (furnace imported fiber made of high temperature resistance, rapid thermal quench).
Furnace fine spray corrosion-resistant acid, furnace, furnace isolation with air-cooled furnace wall temperature close to room temperature.
6, double-circuit protection (over-temperature, over-pressure, superfluidity, paragraph even, power outages, etc.).
7, furnace materials imported refractories, good insulation properties, high temperature resistance, rapid cooling and rapid heat.

2013年9月11日星期三

Chamber furnace Products

Chamber furnace with a cube or rectangular furnace industrial furnace, also known as box-type furnace. Chamber furnace compartment flame furnace chamber furnace two categories, chamber furnace to strictly control the temperature. Chamber furnace combustion devices or electric components are mounted on the side walls or the bottom of the furnace, heat radiation, convection, and conduction heat transfer of the workpiece. The workpiece is heated to load and remove from the oven door. Furnace chamber structure is relatively simple, for heating of the workpiece in a single piece, small quantities, the workpiece by weight is generally not more than 3 tons, the the hearth area not greater than 10 square meters, the thermal efficiency is low.
Chamber furnace classified:
Chamber furnace uses can be divided into three kinds. The ① chamber furnace: for metal forging and thousands of welding heating furnace working temperature of 1000 to 1300 ° C. Gas and combustion air in the mouth after the first introduction of the burner mixing, then ejected combustion. Combustion gases in the furnace after the heating of the workpiece into the flue, and finally by the chimney into the atmosphere. Stove burner, furnace, metal hob, door, flue and adjust the flue of the furnace pressure gate. ②-chamber-type heat treatment furnace: normalizing, annealing and quenching, the furnace temperature of 800 to 1100 ° C, heating for tempering and aging, the furnace temperature 150 to 700 ° C is used to eliminate stress in the metal forging and heat treatment heating as . (3) Room type roaster: Investment Casting Shell roasting and enamel roasting furnace temperature of 850 to 1200 ° C.
Chamber furnace features:
Chamber furnace with sealed metal furnace shell, the heating element is mounted on the inner surface of the both sides of the furnace, the furnace bottom, and front and rear door. Tightness of the furnace, and more uniform heating, and the furnace temperature can be precisely controlled.

2013年9月9日星期一

The structure introduced oven

Drying oven is divided into: general type and blast two. Blast drying oven fitted with a fan in the box to accelerate hot air convection to keep the temperature uniform . The items inside accelerated evaporation of water vapor to dissipate in the air outside the box , in order to improve the drying efficiency.Drying oven is divided into: general type and blast two. Blast oven fitted with a fan in the box to accelerate hot air convection to keep the temperature uniform . The items inside accelerated evaporation of water vapor to dissipate in the air outside the box , in order to improve the drying efficiency.Oven for drying items or dry heat sterilization . The temperature adjustment range , (50 ~ 200) ℃ ( or (50 ~ 250) ℃, (50 ~ 300) 0C).First, the structure of ovenAlso known as oven or oven drying . Mainly by the cabinet , the heater and temperature control system consists of three parts .Cabinet includes enclosure , thermostatic chamber , door , into the vent , side room .Enclosure Material: shell with a thin iron plate ( or sheet steel ) is made. Multi- tank wall is divided into three ( including housing ) , formed between the inner and outer two three- iron sandwich , sandwich filling the outer insulating material ( glass fiber or asbestos ) , as hot air convection within the mezzanine floor .Thermostatic chamber : the inner space surrounded by iron called thermostatic chamber . There are 2 to 3 layers of mesh shelves for placing items. Temperature controller temperature probe ( temperature sensing part ) , from the left wall into the heated indoor . Heating wire is installed in the bottom of the sandwich .Door : usually are double ceremony. The inner door is glass door , for reducing heat loss observed in the case of baked goods . Exterior doors for insulation .Inlet vent : has a bottom or side air intakes , dry air will enter . Tank top has a vent at its outlet with adjustable exhaust windows , whereby the steam to escape. Exhaust a thermometer inserted into the center of the window , to indicate the temperature inside .Ceshi : To control room. Generally located in the box on the left , with thermostatic chamber separated by insulation . Within which is mounted switches, lights , temperature controllers, blowers and other electrical components. Side chamber door opened , can easily access the circuit outside the electric wire .And some electric box will control room set up in the box at the bottom.Second, the electric heaterOven electric heater usually consists of four electric wire parallel. Heating wire coiled evenly fired by refractory insulation board. Generally divided into two groups , controlled by the switch . Total power (2 ~ 4) kW, up to large power 8 kW. Larger power , the cabinet are greater.Third, the temperature control system
 
Used on the previous oven temperature control system, usually have differential rod and mercury thermometers two. The use of modern production oven temperature control system mainly by the temperature sensor , the temperature control circuit , the relay , the temperature setting and the temperature display part .


2013年9月7日星期六

The structure of industrial furnaces

Industrial furnace heating the material to physical and chemical changes in industrial heating equipment. Furnace and kiln and distinguishable, but a slightly different meaning. In the machinery industry, generally used to complete workpiece or material thermal heating, melting and heat treatment process used thermal equipment called a furnace, and for silicate industrial heating equipment called a kiln. The industrial furnaces often referred to as industrial furnaces.
With the needs of the different production processes, the structure of industrial furnaces in many forms, but in general, shall meet the following requirements:
1) heating speed, high yield per unit area.
2) furnace temperature, the atmosphere is easy to control the product quality is good.
3) in the low energy consumption, high thermal efficiency.
4) The structure is simple, low cost, long life, easy maintenance.
5) operation is simple, a higher degree of mechanization and automation, less environmental pollution, good working conditions.

2013年9月6日星期五

High temperature laboratory furnace annealing furnace refractory castable inspection

Furnaces, laboratory furnace, annealing furnace refractory castable must be required to conduct on-site measurements and the slump test block sample. Test and sampling devices used must meet the requirements and after checking.
1 reference block with pre-construction inspection. Furnace refractory castable before construction, mix design requirements should be made of the test block. Upon examination meet the requirements.
2 test block lien. Furnaces, laboratory furnace, annealing furnace refractory castable should be for each single project or mix brands, each 20m3 batch. Indwelling test block can be tested, also made a number less than this number of tests; every single project using the same grade or mix multiple construction, the construction of each test specimen shall be retained.
3 TESTING. Furnaces, laboratory furnace, annealing furnace unshaped refractory castable, etc. should be done TESTING project and the number of samples in accordance with regulations.
4 specimens conservation should be specified.

2013年9月5日星期四

Precautions furnace

First, in addition to doing experiments, but do not stay at a high temperature furnace area.
Second, the experimental work is completed, in the absence of people continue to use, please close specialty gases, retention N2 flow tube maintained at standby temperature and see if there are other power related and not related to this, such as: cleanhood lighting, cooking acid used Small electric or other, please turn off.
Third, the treatment of HF, wear gloves, if not accidentally hit HF, immediately flush with calcium gluconate plus 2% of the water, rub the wound 15 '.
Four, quartz glass Use with caution so as not to rupture, causing severe cuts.
Fifth, avoid inhalation treatment tank from the furnace or the various gases are emitted.
Six, potassium cyanide (KCN) can not be mixed with acids set, because the two of KCN can produce toxic gases.
Seven, if found to have the things that interfere with the safe, please immediately notify the relevant personnel (technicians, etc.).
Eight, please conserve water usage.
Nine, broken chips, paper, cotton swabs ....... etc., do not fall into the cleaning tank bottom drainage holes to prevent waterlogging due to poor drainage caused by the floor.
Ten, the front-end length putter, when used in yet, please upward to avoid contamination.
Eleven, baked chips into the mouth, to undertake the boat's holder, do not touch the tube opening to avoid contamination of the furnace tube.

2013年9月4日星期三

High-temperature vacuum furnace atmosphere Precautions

1, except for people who do experiments, other people do not stay in the high-temperature furnace area.
2, the experimental work is completed, if no one to continue to use, please close specialty gases, retention N2 flow tube maintained at standby temperature and see if there are other power related and not related to this, such as: cleanhood lighting, cooking acid used Small electric or other, please turn off.
3, treatment of HF, wear gloves, if not accidentally hit HF, immediately flush with calcium gluconate plus 2% of the water, rub the wound 15 '.
4, quartz glass Use with caution, so as not to rupture, causing severe cuts.
5, avoid inhalation treatment tank from the stove or the smoke of various gases.
6, potassium cyanide (KCN) can not be mixed with acids set, because the two of KCN can produce toxic gases.
7, if found to have the things that interfere with the safe, please immediately notify the relevant personnel (technicians, etc.).
8, please conserve water muffle furnace usage.
9, broken chips, paper, cotton swabs ....... etc., do not fall into the cleaning tank bottom drainage holes to prevent waterlogging due to poor drainage caused by the floor.
10, the length of the rod tip, when in use yet, please upward to avoid contamination.
11, the wafer into the baked mouth, to undertake boat's holder, please do not touch the tube opening to avoid contamination of the furnace tube.