High frequency induction heating machine in the manufacture of fiber optic cable
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High frequency induction heating machine in the manufacture of fiber optic cable
Time:2014-07-16 20:56:43
High-frequency heating machine - full name of "high-frequency induction heating machine", also known as high-frequency induction heating equipment, high frequency induction heating equipment, high frequency heating power, high frequency power, high frequency welding machines, high frequency induction heating machine, high frequency induction heater (welding), etc., it is primarily for metals induction heating (non-contact); capable of heating the metal fast, power-saving, small size, easy to install, easy to operate, safe and reliable heating speed, etc., and a very wide range of applications. 
With the Internet business, 3G (3rdGeneration third generation mobile communication technology) services and the rapid development of multimedia applications, network traffic is growing at an exponential rate rapid expansion, which requires the network must have a high bit rate data transmission capacity and large cross-throughput capability. After the emergence of optical fiber communication technology, and its enormous potential near 30THz communications bandwidth capacity to bring opportunities to flourish, especially since the proposed information superhighway, optical technology has begun to permeate the entire communication network, optical fiber communication has the all-optical network advancing trend. Optical fiber communication in our country have gone through more than twenty years of history. Market is the lifeblood of the industry, the price is the lifeblood of business, how to reduce product costs, improve product quality and ensure user requirements, is the top priority of all enterprises. This article focuses on the traditional way of dispensing ladle cable and new technology - a comparison of high-frequency induction heating. 
First, the principle Introduction 
Performance is a well-known cable seepage environmental performance indicators strict requirements of each user, while the structure of the cable in a steel ladle lap easy seepage, commonly used hot melt filling the traditional way, so that the adhesive strip lap completely prevent water seepage . But there are many shortcomings of traditional methods, such as the lack of increase will cause the glue seepage occurs, add the glue will cause too much time out of the jacket has a bag happen, so it is difficult to control artificially increase the amount of plastic; addition also because of the strip surface poly ester bond is not strong membrane accumulation at the core of the phenomenon caused by sheathing the package. The new process uses high frequency induction heating principle to make molten steel surface coating, not only firmly bonded lap steel, but also improve the bond strength between the steel and the sheath, completely solve the problem of water seepage and jacket the package phenomenon. 
      High frequency induction heating principle is the molecular polarization dielectric material occurs at a high frequency electric field effect, according to the direction of the electric field arrangement, because the high-frequency electric field at breakneck speed to change the direction of the molecule, the dielectric material will be due to dielectric loss and fever. High-frequency heating coil current flow is made of circular or other shapes (usually with copper production). Coil which produces instantaneous changes in the magnetic polarity of the beam, metal and other materials to be heated is placed inside the coil, the magnetic flux through the whole is heated material will produce a large vortex inside the material is heated and the heating current in the opposite direction current, the resistance inside the material is heated to generate Joule heat, so that the material itself rapidly rising temperature, which is the principle of induction heating. 
Second, the widespread use of high-frequency induction heating machine 
    High frequency performance of all the metals heating rapid heating, such as: iron, steel, cast iron, stainless steel, copper, aluminum, tin, gold, and silver. 
1, forging pressing industry --- the whole, local forging, drill repression. 
2, welding --- brazing metal products, cutter blade welding, brass welding (in the cable manufacturing industry can be used for lap steel welding). 
3, heat treatment --- metal hardening, annealing, tempering; especially topical treatment (in the cable manufacturing industry can be used for sheathing and metal tape stripping). 
4, melting --- casting smelting, precious metal smelting, small laboratory smelting. 
5, other applications --- powder coating, metal implants plastic, heat oil to (the cable manufacturing industry can be used to cushion wire to wire to squeeze oil, impurities). 
Third, the application of traditional hot melt contrast with the case of the high-frequency welding 
High frequency induction heating machine, belonging to the high-frequency dielectric heating equipment. The cable core is placed in the ladle after the device generates between the electrodes, an AC current flows into the annular crimped conductors (typically copper), thereby generating magnetic flux, the core of the steel cable through the tubing longitudinally , the magnetic flux through the strip will generate an eddy current (current rotation) in the direction of the magnetic flux from the payment, induction of the case, since the resistance of the Joule heat is generated within the strip (1 square R), the temperature was increased rapidly, it is induction heating. Whereby in a state of non-contact strip can be heated. (Fever and heat Joule heat generated by hysteresis loss, but mainly due to Joule heating.) When the strip is heated by high-frequency, polyester film surface is heated to melt steel, lap steel using its polyester film achieve bonding, to lap steel water blocking effect. Directly through the outer sheath and a polyester film bonded, not only increases the outer sheath of steel and adhesive strength, and in addition to steel ladle cable film, hot melt adhesive frequent the package issue. 
According YD/T901-2001 core network with fiber optic cable - Stranded with outdoor fiber optic communication standard 4.3.2.2 requirements. 
Bonding the sheath (including the outer cover layer 53 type) aluminum (or steel) and the peel strength between the polyethylene and the sleeve overlap at overlapping aluminum (or steel) with a peel strength of not less than 1.4 should be between N / mm, but in the aluminum (or steel) with the following when filling or coating using water blocking compound, aluminum (or steel) with a lap time to make the numerical requirements. 
Fourth, the advantages of high frequency induction heating machine, features 
High frequency induction heating machine advantages: 
1, the rapid heating: Compared with other methods, in seconds, can be heated to a target temperature required. 
2, local heating: heating only strip by strip generates heat to melt the surface of the polyester film, on the other components of fiber optic cable without any harm. 
3, save energy: In addition to working hours, standby power can only very reasonable power. 
4, can be automatically run at a relatively stable temperature: even if the production is not enough skilled personnel to operate, but also to ensure normal operation of equipment. 
5, green: no harmful substances. 
6, according to the quality of the object to be heated, the heating time, temperature, to adjust the high frequency output. 
High frequency induction heating machine features: 
1, all solid IGBT inverter and functional regulation, resonant soft-switching dual-control and frequency automatic tracking technology, ensuring high reliability; 
2, the ultra-small size, customers can save 10 times the production space; 
3, energy efficient, the whole power range, high power factor and power efficiency; 
4, broadband 30-80KHZ frequency automatic tracking ability to adapt, without on-site commissioning; 
5,100% of full load, 24 hours continuous working ability; 
6, constant output voltage / constant output power control selection function; 
7, frequency, power, voltage and current full display. 
Five test results 
After nearly a month of testing and detection and tracking technology, the cable core is sheathed by a high-frequency induction heating machine processing performance is no seepage occurs, no core stacked film happens, unsheathed a package phenomenon. Meanwhile peel strength between the sheath and strip and a sample test, concrete results in Table 2; peel strength between lap steel and a sample test, the specific results are shown in Table 3. Produced by high-frequency induction heating machine fiber optic cable made a full performance test and all qualified, the test results will not list them here. 
CONCLUSIONS 
I believe that through my presentation, you already have more understanding of the high-frequency induction heating machine and works. By comparing two different ways, and fully explains the advantages of high-frequency heating machine applications in fiber optic cable manufacturing, I believe in the near future will be more widely used.
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