Muffle furnace maintenance should note:

1, when the first use of a muffle furnace again after disabling or long-term use, the oven must be carried out. The oven temperature 200 ℃ time should be four hours. 200 ℃ to 600 ℃ four hours. When used, the furnace temperature shall not exceed the maximum rated temperature, to avoid burning heating element. Prohibit the furnace infusion of liquid and soluble in a variety of metals, Burnout oven below the maximum temperature of preferably below 50 ℃ work, then furnace wire has a longer life.
2, muffle furnace and the controller must not exceed 85% relative humidity, no conductive dust, explosive or corrosive gases in the workplace. Where the grease is attached to a metal material being heated, the volatile gas will affect a large number of heating element surface and etching, so that destruction and shortened life span. Therefore, the heating should be timely prevention and well sealed containers or suitable openings to be eliminated.
3, muffle electric furnace controller should be limited to the ambient temperature 0-40 ℃ range.
4, according to the technical requirements, regular and frequent checks furnace, the controller of the wiring connection is good, whether the indicator pointer moves stuck stranded phenomenon, and because electricity meter calibration potentiometer magnets, demagnetization, up wire, shrapnel fatigue, balance error increases damage caused by the situation.
5, thermocouples do not suddenly pull out at high temperatures to prevent the jacket burst.
6, and keep the furnace clean, timely removal of the furnace oxide and the like things.

What are the advantages and EAF what are the disadvantages

1) Compared with fuel stove is easy to get high.
2) can be heated to an internal temperature from the material.
3) facilitate the controlled atmosphere furnace and the vacuum furnace used.
4) no fuel furnace exhaust furnace heat loss, so high thermal efficiency.
5) is easy to control the temperature, to facilitate remote control and fine tune.
6) capable of rapid heating.
7) Operating performance is good, do not pollute the environment.
Furnace shortcomings
A) the need to increase distribution equipment costs.
2) high cost of electricity.
3) resistance when the heating temperature exceeds 1000 ℃, refractory materials may be electrically conductive, insulating problems need to pay attention.

The RCW series of mesh belt heat treatment furnace

RCW series mesh belt heat treatment furnace:
The RCW series mesh belt heat treatment furnace with a high degree of automation, easy to adjust the parameters, low labor intensity, do not pollute the environment, energy conservation, etc., can be widely used in light machinery, textile machinery, weapons industry, mechanical and electrical industrial mass production The heat treatment of small and medium-sized workpieces.
Furnace shell is welded by steel plate and steel lining Light clay and aluminum silicate refractory fiber as a heat insulation material.
RCW series mesh belt heat treatment furnace lining structure:
RCW series mesh belt heat treatment furnace, furnace the backing insulation layer bulk density 0.8 high insulation bricks, insulation layer on both sides full aluminum silicate fibers, furnace shell surface pad with a layer of asbestos board (low temperature thermal conductivity minimum); lid insulation fiber acupuncture blanket module, with a special method of anchoring the lid on a steel plate (commonly known as the ceiling structure). This structure has good insulation effect, low energy storage, heat loss, good thermal shock resistance, easy maintenance and many other advantages. Greatly improve the life of the lining. The parameters of the furnace air furnace loss power, the temperature rise of the furnace wall, the furnace temperature uniformity better than national standards.
RCW series mesh belt heat treatment furnace temperature control instrumentation:
RCW Series mesh belt heat treatment furnace heating temperature control using the Japanese island of Yan / Island power (Shima) smart temperature. The instrument configuration module of self-tuning PID operation and standards can effectively prevent the temperature overshoot the same time, the instrument can function selection, configuration and parameter setting and digital display of set and actual values. Main heating SCR series of modular three-phase thyristor power controller, the use of continuous on-off control, it is not a traditional electrical on-off continuously and automatically adjust the heating power, but according to the temperature control requirements. High-power high precision temperature control, no noise, no interference in the internal grid.
RCW series mesh belt heat treatment furnace uses:
RCW Series mesh belt heat treatment furnace is mainly used for medium heat hardening, the thin layer carburizing and carbonitriding and subsequent tempering. Widely used in mass production of small and medium-sized parts, such as solid pieces, chains, bearings, small weapons, hardware tools, elastic components, sewing machines, bicycles, car and motorcycle, agricultural machinery parts quenching or thin smooth protective atmosphere carburizing and carbonitriding. According to the different kinds of steel, can be water, oil or molten salt quenching tank quenching agent.

How to take care after the closure of industrial furnaces

In the long-term disabled industrial furnace, the furnace should pay great attention to external corrosion maintenance problems.
First, in the industrial furnace shut down after cooling, heating surface must be thoroughly cleaned of dust and grate upper furnace bottom ash. And then to maintain a certain degree of natural ventilation flue. Generally, in order to be in the furnace moisture, placed in the flue desiccant. As with quicklime as a desiccant, each cubic meter chamber or flue should generally be placed around 3kg. After placing all the ventilation should be tightly closed doors. Variable to be replaced after lime powder.
Locations such as industrial furnace room lying, flood tide serious ground during shutdown when a small fire should be used frequently baked and placed desiccant combined approach. If the industrial furnace shut down for a long time, after the complete removal of soot in the furnace metal exterior topcoat Hongdan oil or other anti-corrosion paint.
As for the inside of the furnace corrosion maintenance shutdown method, according to the length of time to be shutdown. Generally, the shutdown can not exceeding one month wet maintenance, more than one month should be taken care dry.
Dry maintenance should note the following questions: Do not direct contact with the desiccant industrial furnace metal surface, can be installed in a container such as iron plate; placed desiccant, to shutting the other hand hole and manhole covers, gas, water pipeline The valve must be truncated; quicklime change powder should be replaced.
The use of wet maintenance, pay attention to the furnace condensate water is best to use, followed by the original boiler water can again be softened; adding alkali, the boiler water with Weihuo heated to 80 100 ℃ pressure rose to 23 tables after pressure protection 23 hours to reach the furnace circulating water alkalinity balance, the pressure is reduced, then the boiler water to fill, causing 1.5 4 gauge and maintained throughout the warranty period this pressure, alkalinity should be regularly testing, lowered, should be ready to add.