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From The Heating Frame To See The Quality Of The Electric Tube
Apr 18, 2018

Electric tube in the usual days will be used everywhere but how to see it good or bad,

Electric heating pipe resistance wire is made of nickel, chromium alloy, the temperature up to 800 ℃ or more. As the power of electric heating pipe is relatively large, if the user ignores the safety, the fire may occur at any time. Therefore,

The tubular electric heating element (electric heating tube) with metal tube as the shell (including stainless steel, copper tube) along the tube in the middle axial uniform spiral electric wire (nickel chrome, iron chrome alloy) its empty fill compaction with excellent thermal insulation function Magnesium oxide sand, the mouth of the mouth with silicone seal, this metal armored heating elements to heat the air, metal molds and a variety of liquids.

Metal tubular electric heater element (electric heating tube) Metal tube into the heating element, and some tightly filled in the open space has excellent heat resistance, thermal conductivity and insulation of the crystalline magnesium oxide powder, the other technology from disposal. With a simple layout, high mechanical strength, high thermal efficiency, safe and reliable, simple equipment, long service life and other characteristics. Widely used in a variety of salt stone trough, sink, tank, acid bath, fusible metal melting furnace, air heating furnace, drying oven, drying oven, hot stamping die and other equipment.

 Electric tube is a specialized electrical energy into electrical energy components, because of its cheap, easy to use, the classification of electric heating tube heating tube <sauna electric tube <steamer water tank with electric tube <fastener device Electric heating boiler tube electric element <Flange equipment electric boiler tubular heating element <air electric tube <liquid electric tube <boiler electric tube <how to verify high-quality electric tube <verify electric tube is the most intuitive way is the first electric tube appearance Wipe clean. There are many manufacturers of electric heating elements, there are many brands of electric heating pipe, the service life of the electric heating pipe is very long, usually depicts the service life of more than 10,000 hours, the use of electric heating pipe is very convenient.

How to verify high-quality electric tube? Verify the electric tube is the most intuitive method is to wipe the appearance of the first electric tube, and then connected to 220V power supply, the air dry, the appearance of red power, until the electric tube completely cooled, with napkins scrub, white Should be no black oxide powder (not with the oxygen in the air reaction) that the quality of electric heating tube.

In addition to the production of electric radiant tube for the domestic manufacturers of heat treatment equipment, but also for users of non-standard products designed and manufactured heaters, according to the situation can be divided into: Casting pipe and non-metallic casing. The use of electric heating tube should pay attention to: 1, the components allow the following conditions: A. Air relative humidity of not more than 95%, non-explosive and corrosive gases. B. The working voltage should not be greater than 1.1 times the rated value, the shell should be effectively grounded. C. Insulation resistance ≥ 1MΩ Dielectric strength: 2KV / 1min. 2, electric heating tube should be positioned fixed, effective heat must be fully immersed in liquid or solid metal, is strictly prohibited air burning. Found that the surface of the pipe body scale or carbon, should be promptly removed and then clean, so as not to affect the heat and shorten the service life. 3, heating fusible metal or solid nitrate, alkali, asphalt, paraffin, etc., should first reduce the use of voltage, until the media is melted, to rise to rated voltage. 4, when the air heating elements should be cross-aligned, so that components have a good heat dissipation, so that the flow of air can be fully heated. 5, heating nitrate should be considered when the security measures to prevent the explosion. 6, the wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, water; lead wires should be able to withstand long-term part of the wiring temperature and heating load, tighten the wiring screws should avoid excessive force. 7, the components should be stored in a dry place, if the insulation resistance placed for a long time less than 1MΩ, the oven can be 200 ℃ or so, or reduce the voltage heating, until the restoration of insulation resistance. 8, electric heating pipe outlet of the magnesium oxide powder, in the use of places to avoid contaminants and water infiltration to prevent leakage accidents.


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