Precautions for the safe use of electric stoves: 1. The power of electric stoves are generally larger, and should not be used with other household appliances *** with the same power outlet, especially do not use the same circuit with refrigerators, air conditioners, so as not to drop the voltage is too large, affecting the normal operation of these appliances.
2. supply of electric stove wire and power leads must have sufficient cross-section, so as not to cause accidents caused by overheating; power leads must be rubber-insulated sheathed cord, do not allow the use of gum line (flower line). Because of the gum line insulation, mechanical strength and abrasion resistance, heat resistance are poor, easy to cause insulation damage and short-circuit accidents.
Larger power furnace should be protected by a separate fuse. 3. Do not use the electric stove in the vicinity of combustible, flammable items, such as electric stoves around the gasoline, alcohol, diesel fuel, kerosene, liquefied petroleum gas cylinders, shavings, paper, firewood, sawdust and other items, otherwise it is easy to cause fire accidents.
The electric stove should be placed smoothly on a heat-resistant platform to use, never directly on the floor to use. 4. When moving the electric stove, disconnect the power supply first and wait until the stove cools down to avoid electric shock and scalding accidents.
5. When using the electric stove, to be supervised, do not just leave for a long time, so as not to be heated by the liquid boiling overflow damage to the stove plate and flow into the plug, or cooking in the burnt container, causing short circuit and fire and other accidents. 6. The electric heating wire of the electric stove is not allowed to protrude from the disk groove spacer ridge, so as to avoid the bottom of the metal container touching the electric heating wire to make the whole container charged, endangering personal safety.
7. usually pay attention to check the power supply leads, plugs, sockets and electrical connection parts, etc., once found insulation damage, gum wood burnt, porcelain beads were damaged, loose connection parts, should be repaired or replaced in a timely manner to avoid accidents.
2. The use of electric furnace
1, the operator must understand the following points:
A, the structure and performance of the furnace and its auxiliary equipment.
B, power distribution system, control system arrangement and the location of safety devices, etc..
C, the operation process and safe operation procedures.
2, pre-operation preparatory work check
A, whether the power supply of the equipment is normal, whether there is a broken phase, short circuit or bare wire and so on.
B, check whether the contact at the grounding device wiring is good.
C, check whether there is damage to the heating element, whether the contact at the connections is good, and whether there is contact with the furnace body and cover.
D, check whether the temperature control system is not normal.
E, check the furnace door lift, cart in and out of the normal operation.
3, with corrosive, volatile, explosive gas workpiece is strictly prohibited to enter the furnace processing, so as not to affect the service life of the heating element and refractory materials and cause explosions and other accidents.
4, the electric furnace shall not be over-temperature operation, otherwise it will shorten the service life of the equipment.
5, the workpiece evenly stacked, from the heating element should be about 100-150mm.
6, too much oxidized skin of the workpiece into the furnace before the need to remove, available wire brush brush down.
7, barbaric operation is strictly prohibited, the workpiece should be placed lightly to avoid impact.
8, the use of electric furnace operators shall not leave their posts without authorization, and must always pay attention to the working condition of the furnace is normal,
9, the electric furnace in the loading and unloading of the workpiece, you must first cut off the power supply of the heating element to ensure the safety of the operator.
10, the furnace oxides (including under the wire) should be frequently cleaned, at least once a week or five times a furnace. Under the furnace floor can be blown with compressed air.
11, resistance wire, such as after use, it shall not collision folding, so as not to break.
12, the furnace motor need to be regularly checked, add lubricants, etc., pay attention to the use of safety.
13, regularly check the use of heating elements. Heating element after short-term use will not be folded, collision. If not yet seriously corroded and broken, can be used with the same material as the wire (or wire itself) as a welding rod, using acetylene gas for heating and welding, welding rod using 50% of the white cloud powder mixture, if the heating element is seriously corroded and can not be used, it should be replaced.
14, regular calibration of the meter, thermocouple deviation, to prevent the meter, thermocouple error caused by incorrect temperature measurement and affect product quality.
3. experimental furnace installation and use of operational procedures: remember to operate carefully to ensure safety
Luoyang Torch Star Furnace reminds you to install and use the experimental furnace must be safe as a prerequisite, careful, responsible.
1. Furnace does not require special installation, only flat on the indoor ground or shelf. The controller should be placed on the workbench, the inclination of the workbench surface shall not exceed 5 degrees. The minimum distance between the controller and the furnace should not be less than 0.5 meters. The controller should not be placed on top of the furnace, so as not to affect the normal operation of the controller. 2. 2. The load capacity of the power line, switch and fuse connected to the controller and the furnace should be slightly larger than the rated power of the furnace. 3. When wiring, first loosen the screws on the left and right sides of the controller shell, then turn the cover up and connect the power cord as shown in the diagram. Controller and furnace wiring and thermocouple connection line (preferably with compensation wire). Insert the thermocouple into the furnace chamber from the small hole of the thermocouple holder, plug the gap between the hole and the thermocouple with asbestos rope, and then fixed. (Note: the phase of the power supply - and the middle line can not be connected to the reverse, in order to operate safely, the controller and the furnace need to be reliably grounded) 4. check the wiring is correct can be energized, first close the power switch, and then the knob switch on the panel of the controller pulled to the position of the open, adjust the setting button to set the temperature to the number of degrees you need, if the setting switch is pulled to the position of the measurement, the red light out (NO), there is also a If you pull the setting switch to the measuring position, the red light goes out (NO), and there is also the sound of the contactor's suction, the electric furnace is energized, the ammeter indicates the heating current value, and the temperature rises slowly with the temperature inside the furnace, which means that the work is normal. When the temperature rises to the set temperature required, the red light off (NO), green light (YES), the furnace automatically cut off, stop heating. Later, when the furnace temperature drops slightly, the green light is off, the red light is on, the furnace is automatically energized. Week after week, to achieve the purpose of automatically controlling the temperature inside the furnace. 5. in order to check whether the broken couple protection device is working properly, the method is: loosen the thermocouple end, the temperature indication rises rapidly to the highest point and also automatically cut off the heating power supply, the broken coupling device is good, reconnected to a good thermocouple, you can work normally. 6. baking, when the furnace for the first time to use or long term out of service after the use of the furnace must be baked. The process is as follows: when the room temperature rises to 200 ℃ 4 hours (open the door to let the water vapor emitted) when 200 ℃ to 600 ℃ 4 hours (close the door) when 600 ℃ to 800 ℃ 2 hours (close the door) 7. finished, first of all, will be the control panel on the knob switch pulled to the off position, and then cut off the power switch. Luoyang Torch Star Furnace Co., Ltd. Zewu electric furnace to remind you to install and use the experimental furnace must be safe as a prerequisite, careful and conscientious.
1. Furnace does not require special installation, just flat on the indoor floor or shelf. The controller should be placed on the workbench, the inclination of the workbench surface shall not exceed 5 degrees. The minimum distance between the controller and the furnace should not be less than 0.5 meters. The controller should not be placed on top of the furnace, so as not to affect the normal operation of the controller. 2. 2. The load capacity of the power line, switch and fuse connected to the controller and the furnace should be slightly larger than the rated power of the furnace. 3. When wiring, first loosen the screws on the left and right sides of the controller shell, then turn the cover up and connect the power cord as shown in the diagram. Controller and furnace wiring and thermocouple connection line (preferably with compensation wire). Insert the thermocouple into the furnace chamber from the small hole of the thermocouple holder, plug the gap between the hole and the thermocouple with asbestos rope, and then fixed. (Note: the phase of the power supply - and the middle line can not be connected to the reverse, in order to operate safely, the controller and the furnace need to be reliably grounded) 4. check the wiring is correct can be energized, first close the power switch, and then the knob switch on the panel of the controller pulled to the position of the open, adjust the setting button to set the temperature to the number of degrees you need, if the setting switch is pulled to the position of the measurement, the red light out (NO), there is also a If you pull the setting switch to the measuring position, the red light goes out (NO), and there is also the sound of the contactor's suction, the electric furnace is energized, the ammeter indicates the heating current value, and the temperature rises slowly with the temperature inside the furnace, which means that the work is normal. When the temperature rises to the set temperature required, the red light off (NO), green light (YES), the furnace automatically cut off, stop heating. Later, when the furnace temperature drops slightly, the green light is off, the red light is on, the furnace is automatically energized. Week after week, to achieve the purpose of automatically controlling the temperature inside the furnace. 5. in order to check whether the broken couple protection device is working properly, the method is: loosen the thermocouple end, the temperature indication rises rapidly to the highest point and also automatically cut off the heating power supply, the broken coupling device is good, reconnected to a good thermocouple, you can work normally. 6. baking, when the furnace for the first time to use or long term out of service after the use of the furnace must be baked. The process is as follows: when the room temperature rises to 200 ℃ 4 hours (open the door to let the water vapor emitted) when 200 ℃ to 600 ℃ 4 hours (close the door) when 600 ℃ to 800 ℃ 2 hours (close the door) 7. finished, first of all, will be the control panel on the knob switch pulled to the off position, and then cut off the power switch. Luoyang Torch Star Furnace specializes in lifting furnace manufacturers, research and development of the control of electric furnace software is easy to operate, accurate and practical.
Luoyang Torch Star Kiln Furnace reminds you to install and use the experimental furnace must be safe for the premise, careful, conscientious and responsible. 1. Furnace does not require special installation, just flat on the indoor floor or on the pedestal. 2.
The controller should be placed on the workbench, the inclination of the workbench surface shall not exceed 5 degrees. The minimum distance between the controller and the furnace should not be less than 0.5 meters. The controller should not be placed on top of the furnace, so as not to affect the normal operation of the controller. 2. 2. The load capacity of the power line, switch and fuse connected to the controller and the furnace should be slightly larger than the rated power of the furnace. 3. When wiring, first loosen the screws on the left and right sides of the controller shell, then turn the cover up and connect the power cord as shown in the diagram. Controller and furnace wiring and thermocouple connection line (preferably with compensation wire). Insert the thermocouple into the furnace chamber from the small hole of the thermocouple holder, plug the gap between the hole and the thermocouple with asbestos rope, and then fixed. (Note: the phase of the power supply - and the middle line can not be connected to the reverse, in order to operate safely, the controller and the furnace need to be reliably grounded) 4. check the wiring is correct can be energized, first close the power switch, and then the knob switch on the panel of the controller pulled to the position of the open, adjust the setting button to set the temperature to the number of degrees you need, if the setting switch is pulled to the position of the measurement, the red light out (NO), there is also a If you pull the setting switch to the measuring position, the red light goes out (NO), and there is also the sound of the contactor's suction, the electric furnace is energized, the ammeter indicates the heating current value, and the temperature rises slowly with the temperature inside the furnace, which means that the work is normal. When the temperature rises to the set temperature required, the red light off (NO), green light (YES), the furnace automatically cut off, stop heating. Later.
4. How to use the intermediate frequency furnace safely
3. Whether it is a knotted lining, or assembled lining, long-term work at high temperatures will change (mainly thermal expansion and contraction and oxidation).
If not used properly, there will be heating material collision and extrusion of the lining phenomenon. So the use of furnace lining is a certain period of time.
4. Once the lining cracks, if it is a knotted lining, cracks not more than 2mm must be filled in a timely manner with knotted material, if the cracks are more than 2mm or more, must be re-knotted lining; if it is an assembled lining must be replaced. So the user must actually take the necessary measures, do not act rashly, causing unnecessary consequences, burn the inductor.
5. Medium-frequency heating furnace in the heating process, the inductor will accumulate a lot of heating workpiece shedding off the oxide skin. If there is damage to the furnace lining, or cracks, cracks, if not cleaned up in time, easy to fire, resulting in overcurrent protection of the medium frequency power supply, but also easy to break through the inductor coil and cause the inductor turn-to-turn short circuit.
5. What is the general knowledge of the safe use of household appliances
When you buy household appliances, you should buy qualified products recognized by the state, do not buy "three no" fake and shoddy products.
After the purchase of the product manual should be carefully read, pay attention to the use of voltage and power, should not exceed the permissible load of the family power socket, fuse, meter and wire, can be used. First, the safe use of household appliances common sense (1) to buy household appliances, should buy the state recognized the production of qualified products, do not buy "three no" fake and shoddy products.
After the purchase of the product manual should be carefully read, pay attention to the use of voltage and power, should not exceed the permissible load of the family power socket, fuse, meter and wire, can be used. (2) When installing household appliances, pay attention to the environment in which they are used.
Do not install household appliances in a humid, hot, dusty, flammable and corrosive gas environment. (3) kitchens, storerooms and other places susceptible to moisture and corrosive, we must often check for leakage, generally available power pen in the walls, floors, equipment shells for testing.
(4) the use of household appliances, to have a complete and reliable power cord plug, do not allow the wire directly into the socket, do not use two-pronged plug and two-pronged socket instead of the three-pronged plug and three-pronged socket, in order to prevent misconnection due to the plug caused by the metal casing of the household appliances electrically charged, electrocution accidents. (5) electric equipment, such as electric heaters, electric stoves, electric heaters, electric showers, electric irons, electric soldering irons, etc., these devices have a large current, high heat, so they should be operated by their own switches, is strictly prohibited to operate with the plug, and the capacity of the socket should meet the requirements.
(6) are not allowed to install switches and fuses on the ground and zero line. It is prohibited to connect the ground wire to the tap water, gas, heating and other pipes.
(7) household appliances in use, do not touch the switch and shell with wet hands. Use electric hair dryers, soldering irons and other electrical appliances, do not wrap the wires around your hands.
When moving electrical appliances, cut off the power supply, and prohibit tugging on the wires with your hands. (8) Do not pull wires and connect electrical equipment, not to mention the use of "one line, one ground" method of wiring electricity.
(9) household appliances power line insulation is broken, to use the insulation of the cloth package, prohibit the use of wet pain relief cream and other medicinal tape. (10) Household appliances are used, to cut off the power supply at any time.
In case of accidental emergencies need to cut off the power supply, you must use electrical pliers to cut the wire, do not use your hands to yank the wire. (11) Do not fly kites, birds, antennas near the power lines, not to mention the poles and wires tethered to livestock, not allowed to dig pits near the poles and wires, soil, in order to prevent the collapse of the pole broken line.
(12) If you find that the electrical equipment has a fault or leakage fire, you must immediately pull the power switch, before cutting off the power supply, can not use water or acid, alkali foam fire extinguishers. (13) Do not sun clothes on the wire to prevent insulation breakage leakage caused by electric shock.
(14) wire breakage landing, do not approach, 6?10kV high-voltage lines, should be at least 10m away from the landing point of the wire, and promptly report to the relevant departments for repair. (15) Do not use wet hands to touch the light port, switches and sockets.
When replacing a light bulb, turn off the switch first and then stand on dry insulation. Don't stretch the lamp cord too long or pull it around.
(16) female mouth found someone electrocuted, should quickly cut off the power supply or dry sticks, bamboo poles and other insulators will be used to pick the wire, so that the electrocuted person immediately from the power supply. If the electrocuted person is unconscious, respiratory arrest, should immediately carry out artificial respiration, as soon as possible to the hospital rescue.
(17) excavation of the ground must first contact the local power supply department to see the marking of the location of the underground cable, take reliable measures to prevent accidental injury to the cable, causing casualties, power outages and other accidents. (18) Do not pile up coal and other flammable products and other items near the poles, transformer stations, distribution rooms, switch boxes in the building, and build houses.
This poses a threat to the safe operation of the equipment, but also to the electrical equipment overhaul, emergency repair difficulties, affecting the fire escape, resulting in hidden dangers. (19) Do not post random publicity materials on the pole, distribution room, switch box in the building, so as not to cover the operation of the sign, affecting the emergency repair work to be carried out.
(20) It is strictly prohibited to climb the poles, transformers, etc. It is strictly prohibited to open the door of the distribution room and the switch box in the building privately to avoid accidents. (21) It is strictly prohibited in the overhead power lines near the crane (high) car work or scaffolding.
(22) household appliances or wire fire, in the absence of cutting off the power supply, are not allowed to use water to extinguish the fire, to prevent electrocution. Second, the shell of household appliances power test The vast majority of household appliances are single-phase power supply, either with electric motors, such as electric fans, hairdryers, refrigerators, etc., or with transformers or electric filaments, such as televisions, electric irons, incandescent lamps, etc., if the use of the shell is not grounded in the case, although its own insulation is not a problem, but the metal casing will often be present, "charged" phenomenon.
At this point, the power test pen can be used to double-check and judgment. (1) power supply for the following 500V AC and DC appliances or wires, in the normal energized case with a tester pen to test its shell or skin, neon bulbs do not light up.
When for some reason, such as moisture or insulation aging, damage, so that the insulation performance decline, leakage or damage to the breakdown phenomenon, as well as wiring errors, neon bubble will be bright. Its brightness is proportional to the measured voltage, the higher the voltage, the brighter the neon bubble.
(2) the difference between the fire line and the zero line method: when testing the 220/380V three-phase four-wire power line, so that the neon bubble is brightly measured wire is the fire line, does not light up is the zero line. (3) to determine the method of AC and DC: when testing AC power, neon bulbs are bright at both ends; testing DC power, only one end (negative extreme) is bright.
6. Medium frequency furnace safety operation what
First, before the opening of the furnace to pay attention to matters, medium frequency furnace in the furnace must be opened before the electrical equipment, water cooling system, the inductor copper pipe, etc. to check, in the case of these intact before you can open the furnace, to ensure the safety of the heat treatment, or to prevent the opening of the furnace.
Determine to specialize in the power supply and open the furnace personnel, and personnel shall not be privately out of position, the work time must be on the inductor and the crucible of the external situation of supervision, in order to avoid people in the power supply after touching the inductor and the cable, affecting the normal operation of the medium-frequency electric furnace or safety accidents. Second, the frequency furnace after the opening of the attention of the furnace, the frequency furnace after the opening of the furnace, in the charging, should be checked within the charge, to avoid mixing flammable and explosive and other harmful items.
In order to avoid the emergence of the phenomenon of capping, to prevent the liquid steel directly involved in the cold and wet material, as well as in the melting liquid filled to the upper part of the block shall not be involved in the larger volume of the material; in order to avoid explosive accidents, it is necessary to ensure that the pouring place and the pit in front of the furnace without water, no obstacles; in the pouring of the two people need to collaborate to carry out the remaining liquid steel can only be poured in the proposed address, can not be poured everywhere. Third, the intermediate frequency furnace maintenance maintenance of attention, in the intermediate frequency furnace maintenance maintenance, should adhere to the intermediate frequency generator room clean, to prevent the accumulation of flammable and explosive substances.
The melting loss of excessive hearth repair in a timely manner, in the furnace to avoid iron filings, iron oxide mixing, to ensure that the crucible is dense. .
7. General knowledge of safe electricity
1, electricity lines and electrical equipment insulation must be good, lamps, sockets, switches and other electrically charged parts can never be exposed to prevent electric shock.
2, do not pull and connect the wires to prevent electric shock or fire.
3, do not stand on the wet ground to move electrified objects or use a damp rag to wipe the electrified household appliances to prevent electric shock.
4, the fuse selection should be reasonable, do not use copper wire, aluminum wire or iron wire instead, in order to prevent fire.
5, the use of household appliances such as refrigerators, freezers, washing machines, etc., should be used according to the product requirements, equipped with grounding wire socket.
6, overhaul or replace the lamp, even if the switch is disconnected, do not touch directly with your hand to prevent electric shock.
8. Daily use of high-temperature furnace and precautions
Nowadays, most of the high-temperature furnace is electrically heated, so pay attention to the safety of electricity, the indicators of the test, and then close the electric switch, start working, in addition to doing the test, do not stay in the high-temperature furnace tube area for a long time; handling HF, please pay attention to the high temperature, to avoid scalding, should be brought to the isolation of the high-temperature gloves, when working with a good mask to avoid inhalation of volatile emissions from the high-temperature furnace, to avoid inhalation of volatile emissions from the high-temperature furnace. In order to avoid inhaling the harmful gases volatilized by the high temperature furnace, once you find a faulty situation, turn off the power, if you are not familiar with, do not repair privately, please notify the professional maintenance personnel in a timely manner, if you find anomalies, please stop the work operation, timely troubleshooting to ensure safety.
; the end of the work, if no one continues to use, please turn off the power, turn off the gas, to ensure the safety of all before leaving the work area. Ltd. specializes in manufacturing a variety of electric furnaces and kilns manufacturers, but also what you do not know can be contacted online, there are professional and technical staff for you to answer.
9. How to safely operate the box-type resistance furnace
Safe operation 1, do not exceed the maximum temperature of the resistance furnace.
2, when loading the specimen must cut off the power supply to prevent electric shock. 3, load the sample when the door should be opened for as short a time as possible, in order to extend the service life of the furnace.
4, prohibited to the box-type furnace chamber filling any liquid. 5, shall not be stained with water and oil specimens into the furnace chamber; shall not be stained with water and oil clamps to load the specimen.
6, load and take the specimen should wear special gloves to prevent burns. 7, the specimen should be placed in the middle of the furnace chamber, neatly placed, do not put.
8, do not touch the furnace and the surrounding specimens. 9, after use should be cut off the power supply.
10, non-professional operators, shall not operate the resistance furnace, in strict accordance with the operating procedures of the equipment.