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.

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.

Bell bright annealing furnace works

The bell-type bright annealing furnace by the heating hood cover, cooling cover, inside cover, stove, vacuum system and electrical control system. The furnace is mainly for strip and wire coiled bright annealing and tempering high production efficiency, less pollution, easy operation and maintenance and so on.
Work piece placed in a protective atmosphere filled with the protective hood uniform heating and cooling. Strong and protective atmosphere circulating fan can work after annealing to obtain a uniform surface hardness and luster, the vacuum system for protective gas and air replacement, the safe and reliable operation. Hood can be equipped with multiple hearth furnace, continuous operation, and its work processes generally: furnace installed - I vacuum - through protective gas - heating - heat - gas, water combined cooling - vacuum cleaners - deflated - baked - next workflow.
1. Vacuum cleaning system can be completely avoided mixing with air, hydrogen, hydrogen atmosphere for high fully applicable, and with plenty of protective gas than simply reduce the cost of cleaning the muffle furnace, the furnace atmosphere to accelerate the transition time. 2. Temperature uniformity is good, the furnace temperature can be controlled within the workpiece within ± 5 ℃, each part to be treated consistent with good mechanical properties.
3. Fan and stove, stove connection with the inner cover parts used PPM level airtight sealed structure for the safe use of the atmosphere to create the conditions to be treated without removal, adhesion phenomena, and to meet carbon steel, alloy steel, etc. bright annealed material.
4. Use of strong convection blower, vacuum cleaning, gas, water and other new technologies combined cooling, can speed up the process cycle, increase productivity, the main performance indicators have reached the level of similar foreign products.
5. Cooling system with a shunt (axis wind turbine structure) as compared to gas, water cooling can accelerate the combination of cooling the workpiece, to simplify the device structure, reducing construction costs and ease of maintenance.
6. Can automatically complete heating, insulation and other processes, temperature SCR power microcomputer intelligent control, programmable logic controller can be used to achieve full operation of automatic process control and automatic recording.
7. With over-temperature alarm, explosion relief, cooling water pressure loss alarm, emergency gas supply and other safety devices, safety and reliability.

High-pressure atmosphere sintering furnace

A high-pressure atmosphere sintering furnace structure
A high-pressure atmosphere sintering furnace designs and manufactures three types of pressure vessel standards, 16MnR or 304 of the furnace shell.
2 door locking bolts or teeth gnawing quick release flange, easy to operate safe and reliable.
Lid lifting electro-hydraulic operating light to reduce labor intensity.
Furnace insulation materials for carbon deposition the composite hard felt, heating elements for German imports of graphite.
5 temperature measurement devices using the company's own development of ultra-high temperature protective tube with tungsten-rhenium thermocouple, thermocouple wire service life of up to six months.
Control system for PLC + touch screen, complete safety interlock protection and alarm functions.
7 high-pressure valves and piping, etc. selection the "Shiwei Locke brands imported products, safe and reliable.
High-pressure sintering furnace features
1, the pressure is easy security qualified, safe and secure
2, dual high-temperature protection device
3, electric heaters burning air defense protection device
4, the double pressure protection switch
5, mechanical overpressure protection relief switch
6, automatic pressure relief safety shutdown protection switch
7, dual low-voltage door limit protection switch
High-pressure atmosphere sintering furnace electrical control
1, LCD liquid crystal display the HMI controller + PLC program controller
2,40 segment thermostat range memory storage function
3, the program automatically monitor and abnormal exclusion
4, PID + SCR the automatic calculation temperature control interface
5, the temperature and pressure data sampling recorder.

Industrial furnace controlled atmosphere

Controlled atmosphere Principle:
Metal furnace heated in the flame, the main component of the atmosphere surrounding the CO2, CO, H2O, H2, O2 and N2, etc. Including CO2, H2O and O2 to metal oxidation or decarburization; H2 and CO is a reducing gas; N. In addition to the particular metal, in general, is an inert gas, but in general contain a small amount of nitrogen oxide impurities, directly to the heat treatment can also cause oxidation.
Each direction of a reversible reaction, according to their chemical equilibrium constant and the temperature. That is, the furnace gas is an oxidizing or reducing, depending on the temperature of the furnace gas in the ratio of the content of the gas may be. Iron redox shown FIG. For example, at 825 ℃, when the CO and CO2 content and the ratio of H2 and H2O in the ratio greater than 2, the iron is not oxidized, but it is difficult to stabilize combustion control in this state, even if done, when the temperature drop to below 750 ℃, this atmosphere is oxidizing it. Therefore, in general, the flame furnace atmosphere is oxidizing or reducing is not controllable. Therefore, during the heat treatment, a chemical change when allowed, or only allowed to take place there is a change (such as carburization or decarburization etc.), only a radiation tube or muffle furnace electrically heated indirectly heated or modified and pass into the preform, the composition of the controlled atmosphere desirable.
Controlled atmosphere Category:
Controlled atmosphere metallurgical plants commonly used fuel preparation can be divided into the atmosphere, nitrogen-based controlled atmosphere, ammonia preparation of pure hydrogen atmosphere and so on.
Fuel preparation Atmosphere:
General use gas fuel (natural gas, propane, butane, and coke oven gas, etc.) or through incomplete combustion catalytic reaction, removal of CO2 and H2O from the system controlled atmosphere. When the heat released by the combustion process to maintain the reaction proceeds, the resulting gas is called exothermic atmosphere can be divided into Ⅰ, Ⅱ and type Ⅲ type, in order to adapt to different uses; When the excess air coefficient is very low, you must heat to maintain the reaction, the resulting clear endothermic gas atmosphere. Two kinds of combustible gases contained in the atmosphere based on the number, type and concentration can be divided into short type.
Nitrogen-based controlled atmosphere:
Mainly refers to the preparation of industrial nitrogen mixed atmosphere of nitrogen and hydrogen. Preparation exothermic fuel type Ⅱ and Ⅲ type also belong to this atmosphere. General separating oxygen from air or nitrogen pressure swing adsorption proceeds, oxygen is about 0.2% to 2%, only as a general controlled atmosphere diffuse gas; refined by oxygen is less than 10-5 nitrogen, can be used for light less demanding steel protective atmosphere. Should generally be mixed with a small amount of H2 or CH4, by catalytic deoxygenation dry before as a controlled atmosphere.
Preparation ammonia atmosphere:
Is evaporated with anhydrous ammonia through the catalyst interior, external heating to near 1000 ℃ tank reactor, the mixture containing 25% N2 and 75% H2 gas mixture, cooling, drying shall be controlled atmosphere of ammonia decomposition. Add ammonia of incomplete combustion air to remove CO2 and H2O, and then by further purification of the main component is obtained ammonia burner controlled atmosphere of N2.
Purity:
Solution with water or from a coke oven gas, chemical byproduct gas extracted by pressure swing adsorption method.
Controlled atmosphere choice:
Mainly based on the type of material and heat treatment process requirements to choose.