UV lamp is the abbreviation of ultraviolet lamp, UV is the abbreviation of ultraviolet (Ultra-Violet Ray). This lamp is mainly used to use the characteristics of ultraviolet light for photochemical reactions, product curing, sterilization, medical testing, etc..
Basic introduction Chinese name ：Ultra-Violet Ray Lamp Foreign name ：Ultra-Violet Ray Lamp Abbreviation ：UV Lamp Applied ：Photochemical reaction Product curing Medical inspection, etc. Product introduction, characteristics, name source, common specifications, use classification, applying the scope of use, conditions of use, parameter classification, installation matters, supporting components, service life, causes of failure, the use of contraindications, product description Features UV lamps for gas discharge lamps, gas discharge lamps are divided into arc discharge and glow discharge, UV curing commonly used UV lamps for arc discharge lamps, its working principle is: in a vacuum quartz tube to add a quantitative amount of high-purity mercury (mercury), through the electrode at both ends to provide the difference in voltage (voltage drop), the generation of ionic discharges, which produces ultraviolet radiation. the power of the UV lamp to meet the requirements (generally 8 0 -120W/cm); UV lamps can not exceed the maximum life of 1 200h, generally recommended to use 1 000h; UV lamps use 500h for a change, maintenance for a period of time when two UV lamps can be used alternatively, one for the use of 500h, the other for the use of 500 a l 000h between the lamps; lamps cleaned and counterclockwise rotation of 1/4 The lamps should be cleaned and rotated counterclockwise for 1/4 week before use. Source of the name UV is the abbreviation for ultraviolet light, industrial UV light source spectral range is 200nm-450nm, 365nm as the center. According to the different wavelengths, respectively, UV-A, UV-B, UV-C have different uses. Common specifications The intensity of UV lamps depends on the power density of UV lamps, generally used specifications are: 80W /cm that is 200W /inch 120W /cm that is 300W /inch 160W /cm that is 400W /inch 240W /cm that is 600W /inch Classification of uses 1, low-pressure UV tubes that is, germicidal lamps are mainly used for sterilization, in addition to UV-B In addition, UV-B lamps are mainly used for ultraviolet light testing, medical treatment. 2, strong ultraviolet high-pressure mercury lamps made of high-quality pure quartz tubing, so that the ultraviolet light can be a high degree and a large number of penetration, and its arc length / light-emitting length can be from 5 cm to 300 cm ranging from the common power of 30W to 200W per centimeter, the ultra-high-power UV lamps are generally operated in the 200W per centimeter or more, the effective range of the spectrum of the light in the 350-450 nm range, the main peak of 365nm, with more than 700 kinds of UV lamps. 365nm, there are more than 700 varieties, power from 100w-25kw. UV curing in English called UV Curing or UV Coating, UV curing is a photochemical reaction, that is, liquid UV irradiation can be cured material by printing or coating to the substrate or the surface of the workpiece, by UV light irradiation to achieve the process of hardening, UV curing and traditional drying process is similar, but the principle is Different, traditional drying generally with the help of solvent evaporation in the coated material and the formation of hardening, and UV curing crosslinking is no solvent evaporation. 3, metal halide lamps containing mercury and argon mercury UV lamps based on the addition of iron doped, potassium doped or other rare earth metals doped. Iron doped halogen lamps especially enhanced 380hm as the highest peak. Mainly suitable for ink and paint curing, dry and wet film, green solder resist exposure. In screen printing and curing with color, especially thicker coating products and white, black drying has outstanding results. Sets the scope of 1, spraying: general spraying of cell phone cases, cosmetics shell, MP3 small appliances shell and other plastic spraying company mostly used to get, cell phone shell spraying and uv printing of these two industries, the requirements for uv are not the same, depending on his products and equipment. Cell phone shell spraying company, most of the 6-8 lamps (a coating line) as long as the parameters provided by the right, as long as you know the specifications and parameters of his uv lamps, you can ensure that the alternative. 2, printing: screen printing, offset printing, 5-color printing mostly used. Like portable disks and so on, CDs and so on, with uv protective adhesive, in the CD-ROM printing, will also use uv ink for screen printing, in screen printing, most of the uv ink for printing. With fast drying, good adhesion, a variety of performance standards (adhesion, abrasion resistance, etc.). 3, the footwear industry: is the use of ultraviolet light irradiation of the sole of the material, so that the chemical reaction, so that the adhesive glue and the sole and the upper have to follow a good affinity. Shoes, applicable to the adhesive, uv adhesive for plastic bonding, such as hospital infusion of plastic pipe bonding. General production of high-grade traveling shoes company, can be used, the business of this industry, based on technology. 4, wood industry: just the surface of the coating, because uv coating (varnish, etc.) better performance in all aspects: such as abrasion resistance, acid and alkali resistance, weather resistance, etc., after uv coating, you can make the surface of wooden floors and other glossy and gorgeous feeling. Wood painting, most of the use of the lamp length is longer, more power Most of the length of about 1000mm. 5, pcb, lcd industry: pcb is the circuit board uv lamps used for circuit board printing generally use METAL (metal halide lamps), there is also a kind of exposure lamp also belongs to the metal halide lamps pcb production, used for the exposure of the development of the general use of the circuit board company. lcd is the display, generally use low pressure cold ultraviolet lamps and curing lamps are not the same, but all belong to the ultraviolet lamp, the use is not the same. Ultraviolet lamps, the use is not the same. 6, crafts varnish: as long as it is used to uv varnish oil crafts, are available uv ultraviolet lamps. 7, uv automatic coating line: pre-treatment project is used, the use of electrostatic dust gun, or electrostatic dust rod to deal with, which is often said: corona treatment, because the plastic, plastic material, its surface tension is very poor, after corona treatment, after the surface tension of the surface to enhance the substrate and uv coating affinity, so that there will be a better curing effect, if the pre-treatment is not good, the product adhesion. If the pre-treatment is not done well, the adhesion of the product will also have problems, many are not the reason for the lamp, but the equipment or the operation of the process, as well as, uv coatings or inks, there is also a great relationship. Unified above, uv spraying company is to be: uv equipment manufacturing company, uv lamp manufacturing company and uv coating company, to *** with its services. So, for the other uv attached material and equipment and so on all aspects of the project caused by curing failure, each of our business employees, are required to understand some. Conditions of use To ensure that the UV lamp normal good work need to ensure the following elements: A. Select the matching lamp power supply, the matching leakage transformer / capacitor with the UV lamp voltage / current required in line with the leakage transformer's rated power / secondary voltage / operating current / insulation coefficient / degree of voltage resistance and capacitor capacity / voltage / number of times can be charged and discharged, which directly determines the luminous efficiency of the UV lamp / stability and Life; B. Adaptive fan to match the UV lamp power, note: you can not use a strong wind on the surface of the lamp to send air cooling, otherwise the surface temperature of the lamp is too low will cause the lamp arc out of the lamp. C. Select the appropriate reflector cover: UV lampshade customized standard lampshade for the spotlight cover. Parameter classification UV lamp parameters one: UV lamp power supply voltage, usually UV lamp voltage 220V, 380V and 110V. set more for 220V, which is also in line with the voltage of our daily life, the power supply can stabilize the voltage, the UV machine to play a protective role. UV lamp parameters of the second: UV lamp operating voltage, operating voltage in the industry is also known as the tube pressure, tube pressure is the voltage at both ends of the lamp. The stability of the tube pressure determines the UV lamp and UV equipment for normal operation. UV lamp parameters of the third: UV lamp current, commonly known as tube current, the current level will directly affect the normal operation of the UV lamp. UV lamp parameters of the fourth: UV lamp start-up current, start-up current is to start the UV lamp instantaneous high current, due to the UV curing machine ammeter start-up instant start-up current is very large, manufacturers will also choose a higher standard supporting ammeter, 30A or more ammeter can be avoided when the start of the damage to the UV lamp. UV lamp parameters of the fifth: UV lamp power density, density refers to the area per square centimeter can concentrate very high energy. UV lamp parameters of the sixth: UV lamp diameter, according to the use of different manufacturers of UV lamps and UV machine configuration will take into account the diameter of the lamp, the size of the tube, because the size of the tube will be the energy of the lamp, so that the overall configuration is not good. UV lamp parameters of the seventh: UV lamp pole distance (light-emitting long), simply put is the distance between the lamp electrode and electrode, UV light-setting machine pole distance length will affect the effective irradiation of UV lamps. Installation matters 1, before installation, the lamp should be wiped clean with ethanol, and then wear clean gloves to hold the lamp. 2, will be mounted on the card holder lamp hole with a cloth pad will be threaded into the lamp, do not let the lamp touch the metal end plate surface, so that the lamp in the cloth rubbed through. UV lamps with wiring direction must pay attention to the direction. Otherwise, it will lead to damage to the lamp, the life of the lamp is reduced or the surface of the lamp overheating phenomenon. 3, the lamp is installed in place, hold the head of the lamp in the hand on the card base swing a few times to see if the lamp is a free state, so that the installation of the lamp will not be installed when the phenomenon of expansion and cracking. 4, sometimes check the lamp, the UV lamp will be removed to observe the lamp wall found on the wall of the handprint marks, and can not be wiped off. This is due to the installation of the lamp did not wear gloves, hand sweat and dirt stuck in the lamp by high temperature carbonization sintered on the quartz glass crystal. Serious leakage in the location of the stain to make the lamp scrapped. 5, installation or replacement of UV lamps, cleaning lamp shade must be turned off when the power supply, otherwise it will be electrocuted. 6, lamp maintenance to be used in the UV lamp during the use of the appropriate time (1 ~ 2 months) with anhydrous ethanol, gauze to clean the surface of the lamp and the reflector surface of the reflector shade reflective plate, and then rotate the UV lamp 180 ℃. Lampshade reflector should be replaced after losing the mirror effect. Matching components Matching power supply with transformers, capacitors, lamps, lampshade four pieces. Transformer from 2KW-20KW can be produced and processed. Transformer has a copper wire and aluminum wire. Capacitors from 18UF to several UF can be customized. Lamp from 200W to tens of kilowatts can be processed and produced. Lampshade is based on the length of the lamp itself. Service life Generally refers to its ability to maintain sufficient energy for the operation of the time, during which its energy gradually decay until below the acceptable range, the general situation of the standard UV lamp can radiate enough UV energy up to 800 hours, the life of imported UV lamps up to 1500 or more, because of its long life can be cured, is widely used in bamboo and wood flooring, furniture, decorative materials, printing, printing and tin cans, plastics, packaging, signage, circuit boards and so on. Coating, labeling, circuit boards, CD-ROM and other industries; also semiconductors, electronic components, liquid crystals, such as adhesive curing of the ideal light source. Service life factors: (1) design life. The following factors have a greater impact on the life of UV lamps. A, wall load. Load large lamp life is low, the same working current, the lamp diameter is small is low life. b, the operating voltage. Lamp voltage is high and low life C, power density. High power density lamp life. (2) Material. Tube wall quartz glass quality has a great impact on the life of the lamp. Good quartz glass with high purity, no internal bubbles, smooth surface. Because the tube wall temperature is generally more than 600 ℃ work, if the purity is not enough impurities, there will be glass surface vaporization, resulting in a lot of tiny pits, affecting the ultraviolet radiation out of the tube wall. Domestic quartz tube with the eye can be seen intuitively within the tube wall bubbles, affecting the ultraviolet radiation out of the tube wall, bubbles will be formed at high temperatures, high-pressure air mass explosion to rupture the tube wall. Electrode materials are generally tungsten filament surface burning coated with a layer of barium zirconate or other cathode emission materials. Tungsten filament and cathode material aging resistance, temperature resistance directly affects the electrode life. (3) production process. This factor is the most important factor restricting the quality of domestic UV lamps. The main processes that affect the service life of the lamp are: cleaning the inner wall of the lamp, vacuum, the purity of mercury and the amount of mercury injection, argon charging and discharging, electrode lead welding, cathode material sintering and so on. The whole set of processes should be carried out in a senior clean place; cathode material sintering, welding and sealing should be completed under vacuum conditions. The current domestic production of UV lamp manufacturers do not have these conditions, greatly affecting the life of the lamp. (4) the use of methods. Incorrect use of methods, will make the lamp life greatly reduced. Use should pay attention to the following points: A, transformer parameters and lamp parameters to match, voltage, current can not exceed the design indicators. In particular, the starting voltage should not be too high, generally not more than 40% of the design voltage. B. Keep the tube wall clean, especially to remove oil stains, dust. Because these substances in the high-temperature surface of the tube wall will penetrate the lamp, hindering ultraviolet radiation. C, ventilation scientific and reasonable. Ventilation should be scientifically calculated, the purpose is to UV lamps produced by the heat sucked out of the lamp, so that the lamp works in a normal temperature environment, not the lower the temperature the better. Ventilation to keep the lamp head temperature below 150 ℃. In addition to a reasonable amount of wind so that the light box wiring, sensors, box shell temperature remains below 90 ℃. Failure causes A UV lamp has a foggy tube to produce what is the reason? If the tube is foggy is: (1) the problem of quartz tubing, that is, the dehydroxylation is not good. (2) or in the production process is not good exhaust. (3) Then the gas is not pure enough. If the tube outside the fog is: UV ink, uv light oil gas volatiles attached to the wall of the tube, can be regularly rubbed with alcohol and other solvents. Second, the main reason for the deformation of UV lamps, deformation after what adverse reaction? UV lamp deformation is mainly due to high temperature, slight deformation does not affect the normal use, but the life will be shortened a lot of serious deformation will make the lamp on one side of the tube wall thinning and rupture. Check whether the fan is damaged or the exhaust pipe is too long, resulting in poor exhaust. Third, UV lamps have a piece of crystal adsorption is how? UV lamp manufacturing process, quartz tubing cleaning impurities. Fourth, the UV lamp becomes a bubble, burst how? Is the local temperature is too high, or because the quartz tube wall is partially too thin, check whether the exhaust system is smooth. Fifth, UV lamp metal head is always melted and burned out what is the reason? a) metal lamp holder for a long time, the copper frame oxidation, poor local contact resulting in excessive current, fire caused by melting. b) The new lamp melting is because the UV lamp metal head and lamp holder contact is poor, false connection caused by the fire melting. Check whether the copper contacts of the lamp holder is oxidized, check whether the spring is elastic. Six, UV lamps can not be used for a few hours on the light (lamp intact) What is the reason? If it is a metal halide lamp is because the halide ratio is not appropriate, or the transformer output is too low, or the tube pressure of the lamp is too high. If it is a mercury lamp may be the electrode causes or the inner quality of the lamp, or the lamp has been leaking. Seven, UV lamp blackened at both ends of what is going on? Is the electrode powder flaking, attached to the wall of the tube, such as some domestic lamps to one to two hundred hours of this situation is not normal. Eight, UV lamp in use suddenly exposed to crack what is the reason? a) current is too large (such as capacitor line short circuit) b) suction when there is dirt hit on the wall of the tube. c) electrode molybdenum and platinum sealing bad. Nine, UV lamps in the use of the process is always pressure drop, can not be back up how? a) Exhaust air is too large b) Cold end electrode temperature can not come up. c) transformers, capacitors and lamps do not match the electrical parameters. d) network voltage is too low, resulting in low output voltage of the transformer. Ten, UV lamps use 300-500 hours, why in the tube wall on the phenomenon of hand lines like patterns? a) Installation with a hand touching the wall of the tube will be used into this phenomenon. b) Wall inside is to do when the lamp, quartz tube cleaning is not clean enough. XI, UV lamp current and voltage are normal, but the light is not normal, dark greenish-yellow is the reason? (1) lamp power parameters are not correct. (2) The lamp has a slow leakage phenomenon. (3) lamp in the production of exhaust is not clean. (4) transformer with a small. Twelve, UV lamps can be lit for the first time to close the normal, but later never light up what is going on? If the capacitor, transformer are intact, and the line is smooth, no poor contact phenomenon (voltage at both ends of the lamp) in the case of the lamp itself is the problem, generally electrode problems, or the lamp has been leaking. Use of contraindications 1, prohibit the use of hands directly touching the ultraviolet uv lamp, so as not to cause scratching or damage, or lead to a reduction in the life of the lamp; 2, wiring direction requirements of the lamp must pay attention to the direction of the lamp, otherwise it will lead to damage to the lamp, the life of the reduction or uv surface overheating phenomenon; 3, due to the uv lamp pressure is very large, please avoid bumping, scraping and other external forces to damage the lamp; 4, do not use in places where there are diluted and so on. Do not use in places where there are diluted materials and other flammable and explosive substances, otherwise it will lead to fire or explosion; 5, light up in the uv lamp do not look directly with the naked eye, otherwise it will lead to eye stinging or vision loss; 6, do not let the ultraviolet light directly irradiated to the skin, otherwise it is easy to lead to the skin by the ultraviolet radiation damage; 7, is lighting up the lamp or just out of the lamp, please do not touch, otherwise it will be due to the high temperature of the surface of the lamp or the reflection shield 8, please do not paper or cloth and other flammable and explosive materials close to the lamp in use, otherwise it will be due to the high temperature of the surface of the uv lamp caused by fire; 9, in the sealed space when the lamp is opened, please do a good job of exhaust, because of ozone issued by the lamp, the human respiratory system has great damage; 10, try to avoid the phenomenon of uv lamps are frequently turned on and off, every time you turn on and off will be caused by the consumption of lamps and lamps service life; 11, at least 10 minutes after the lamp is turned off before restarting or opening the lampshade, otherwise it will lead to lamp damage or scalding; 12, installation or replacement of uv lamps, cleaning lamp lampshade must be turned off the power supply, otherwise it is very easy to lead to electrocution; when there is a poor cooling conditions should be promptly troubleshooting to continue operations, otherwise it will seriously affect the service life of the uv lamp.