vacuum coating machine : 十月 2016

2016年10月31日星期一

Vacuum coating machine is vacuum plating UV coating

Vacuum coating factory degree of UV curing coating on the coating performance in the process of the influence of UV curing coatings double bond conversion rate could not have reached 100%, through the analysis of the infrared spectrum before and after coating curing can be seen that the change of content of double bond. Carbon-carbon double bond of the stretching vibration absorption peak at 1635 cm - 1, 809.2 cm - 1 is very obvious. In the spectra after curing, the two carbon carbon double bond absorption peak greatly abate, but won't go away, we will film exposure mj/cm2 increased from 350 to 2100 mj/cm2, the absorption peak is still there. Therefore, we must know the coating curing to what extent will affect the performance of coating.
With the constant improvement of UV curing coating, the coating hardness will be better and better, with the increase of UV irradiation dose coating rocker hardness change situation, the formula used to described earlier formula 2 and formula 5 and formula 6. As you can see: with the crosslinking of UV curing coating, the coating hardness under the condition of certain curing one obvious turning point, after that increase the radiation energy, the coating hardness were not significantly improved. In the coating before and after the inflection point of DSC curves. Figure 3. A formula is 5 under UV irradiation after the quantity to 230 mj/cm2 coating DSC test results, B is the result of the irradiated volume to 260 mj/cm2. Figure 3 shows that under the condition of UV curing coatings is not completely, the coating at high temperature can release low molecular substances, it will lead to changes in coating. Experimental results are also verified this, such as A primer curing condition, vacuum coating, up to 110 ℃ or so, the coating appearance of hair color.

2016年10月26日星期三

Vacuum coating machine maintenance and maintenance of the equipment maintenance

(1) the vacuum coating machine gauge, electric contact pressure gauge, the place such as thermocouple is often coated with oil diffusion pump, to that of the bridge between the formation of a layer of oil film, prevent leakage. The above parts and flange
It is not allowed to use vacuum cement seal for a long time.
(2) the vacuum coating equipment the use of the environment, the relative humidity below 85%, the temperature at 10 ~ 40 ℃. When repairing equipment, parts are not allowed to use the hammer knock, seal face, sealing groove is not allowed to scratch.
(3) the vacuum coating equipment, observe the display in the instrument, and the voice of the pump, in order to found abnormal in time, find out the problem.
(4) the bolt regular inspection of each part, if found loose, tighten in a timely manner.
(5) the vacuum coating machine at work, the operator shall not leave for a long time.
(6) operators must be familiar with all kinds of instruments, pumps, all the parts of the equipment. Read and understand all kinds of specifications.
Every batch (7), before starting the check protect gas cylinder capacity, in order to avoid insufficient gas filling, change of gas cylinders.
(8) mechanical pump, roots pump should be regular gas in oil, oil cup of roots pump to keep oil has always been. When an oil change must put the oil clean.
(9) diffusion pump oil change vacuum coating equipment, internal oxidation, if any, of the diffusion pump internal oxidation layer handles clean, then put on the new oil.
(10) cooling water pressure should be kept between 0.1 to 0.2 Mpa, the water temperature is 45 ℃ or less.
(11) compressed air pressure is between 0.4 ~ 0.5 Mpa.
(12) vacuum coating equipment after startup if any abnormal situation, should immediately ruled out or stop to find the reasons.
(13) regularly check back into the water, the various parts of work should guarantee each part there is plenty of water.
(14) to stop using vacuum coating equipment, furnace gas should be fit, long time no, filling the protective gas, and put the equipment in the water jacket of circulating water.
(15) does not allow for vacuum coating equipment used flammable and corrosive gases as a protective atmosphere.
(16) three even pieces of the pneumatic system of oil-water separator is often water, oil mist device should be injected into the vacuum oil diffusion pump.
(17) to ensure that the equipment of the whole machine voltage in the range of 350 ~ 420 V. Three phase equilibrium.
(18) filling the protective gas, the purity should be not less than 99.99%.
(19) surface vacuum coating equipment and instrumentation to maintain clean surface, wipe with water and furnace wall are not allowed to have with the vacuum type oil rag to wipe.

2016年10月23日星期日

Coating technology development needs to solve what problem?

Coating technology development needs to solve what problem? A professional in the industry believe that popular way of coating are mainly concentrated in vacuum coating, like the original coating means and way to little chance, for coating technology, from the modern environmental protection and energy saving requirements, chemical deposition method did meet the challenge, now logistics environment of vacuum coating technology has obtained very big development, the transformation of the modern coating factory is proved.
In fact, in the era of chemical plating, coating development has fall into the predicament of the heavy pollution, a lot of units to first-tier cities ban polluting enterprises, on the one hand, to speed up the environmental protection coating technology research effectively solve the problem, on the other hand, the emerging environmental protection coating technology also has some problems, in the case of coating technology rapid development, various powerful manufacturers are actively research and exploration.
Talks about the relationship between chemical coating and physical PVD coating, essentially the process of two types of coating is different, also is the development of technology, to this, will tell from the coating industry is extremely good, is conducive to the development of ecosystem.

2016年10月20日星期四

The safety of the vacuum coating machine

It is well known that vacuum coating machine is a large processing equipment, its itself is no harm to human body. But if the careless operation, it is easy to cause harm to human body. Common accident has get an electric shock, X rays, the violation of human body, and processed when toxic and harmful substances, harmful dust and so on.
In order to avoid the accident, we should pay attention to focus on more when in operation, should not be distracted. , after all, once the careless operation accident harm not only themselves, are also likely to harm the employees of the same workshop. So it is necessary to provide the correct operation.
Electric control cabinet of the correct operation of vacuum coating machine is the first step to open the water mercury and gas source; The second step is to open the total power supply, the sequence here is extremely important. For the sake of safety, power supply to mercury in water and air after opening; The third step is to open to maintain mercury and the power of the vacuum gauge. This step is the most important thing is not to forget the vacuum gauge shifting gear to the position of V1, and wait for a few minutes. The fourth step to open the machine and the power of the turbo molecular mercury, mercury and adjust the position of the vacuum gauge to V2 position, this time to wait for about 20 minutes; Step 5 is observation, pay close attention to the value of turbo molecular mercury, and start for vacuum operation.
Appeal is basically the whole coating process operation, pay attention to every step of the open and close the power supply, don't make wrong order, the wrong step may cause serious accidents. So the operator had better familiar with the whole machine, and look at the instruction, familiar with operation process, step by step, not too irritable, and it's best to start by the master took, to a certain degree of proficiency of trying again. Finally, to pay attention to the maintenance of vacuum coating machine, try to prolong its service life.

2016年10月17日星期一

The new development of the vacuum coating machine

The development of vacuum coating machine is quite rapidly, with the improvement of productivity, production cost is reduced greatly, has paved the way for the widespread use of vacuum coating products. Winding type vacuum coating machine, for example, when just development can be plated film base material width is 150 mm, 2253 mm. Base material of the drum maximum diameter is 1000 mm, maximum wind speed of 750 m/min. Automatic loading and unloading of the semi continuous winding type vacuum coating machine coating time accounted for 75% of the whole cycle, auxiliary operation time accounted for only 25%. More efficient from the atmosphere to the atmospheric coiling vacuum coating machine has been sold in 1977. With the progress of measuring technology, control technology and the application of electronic computers, coiling vacuum coating machine is developing toward the direction of the high automation and high reliability.
Vacuum coating machine vacuum coating machine to sedimentary thickness of coating layer range 0.01 0.2 & mu; M, can choose in this range, and some can also be plated multilayer film, meet various needs. Japanese patents put forward two different sedimentary evaporation coating material winding type device. The device of the vacuum chamber is divided into the upper chamber, lower left ventricular and right. Evaporation, two groups of evaporation source material coating deposition on the plastic film, respectively, in the side of the plastic film is no evaporation in glow discharge generator. Generator of glow discharge gas can prevent plastic wrinkling. Can use the device in a very thin plastic film plating without crease of multilayer film, for making tape and thin film solar cells, etc.

2016年10月13日星期四

Use vacuum coating equipment and product characteristics

Vacuum coating equipment, we could see there are a lot of, such as vacuum coating machine, etc., here introduce a kind of overview of electromagnetic shielding film for vacuum coating equipment, specific as follows:
Electromagnetic shielding film for vacuum coating equipment is in the mobile phone, notebook computer, telephone, DVD electronic products such as plastic shell plating system of electromagnetic shielding (EMI) on the surface film of special equipment. The device using plasma surface treatment technology, and USES the vacuum evaporation, magnetron sputtering coating process, the combination of with the vacuum evaporation plating Ag, Cu, magnetron sputtering plating Ni/Cr stainless steel, which can realize the EMI coating of different resistance.
Electromagnetic shielding (EMI) film for vacuum coating equipment characteristics and basic parameters
1. There are horizontal, vertical structure, which can realize single coating at the same time;
2. The production efficiency, the fastest speed up to 1 minute/rhythm;
3. The modularization design, easy maintenance;
4. The coating process maturity, high yield;
5. Dc magnetron sputtering cathode can be accordance with the requirement of the customer choice;
6. The vacuum system consists of mechanical pump, roots pump and diffusion pump;
7. The maximum size; 2200 mm * 1200 mm (length * width);
8. Minimal size; 500 mm * 400 mm (length * width)

2016年10月11日星期二

The maintenance of vacuum coating machine

1, when the vacuum coating machine coarse suction pump (valve pumps, rotary vane pump) continuous work a month (half) the rainy season, need to change the new oil. Screw bolt open oil, put away the old oil, then pump start-up for a few seconds, make the old oil inside the pump completely discharged. Screw bolt playback oil, add new oil to the forehead quantitative endoscopic observation (oil). Use more than six months in a row, oil change oil cover should be opened, a cloth to wipe clean the dirt in the cabinet.
2, diffusion pump, use more than six months in a row, pumping speed significantly slower, or improper operation, filling the air and down link pipes, electric plate, will be squeezed out of the primary nozzle, use gasoline pump cavity and pump bravery to clean first, clean with detergent water again, and then clean with clear water thoroughly clean, moisture volatilizes dry after installed pump, add new oil diffusion pump, and put back into the body, connected pipes, installed electric stove disk, can restart. Before restarting, attention should be paid to leak detection work. Start the maintain pump, close the door, after a few minutes, observe whether diffusion pump part of the vacuum degree is 6 x10 palmer, otherwise for leak detection. Check whether the connection place o-ring seal, or crush seal ring. Eliminate leakage hidden trouble is heating, or diffusion pump oil will burn ring, unable to enter the working state.
3, vacuum coating machine, each completed more than 200 coating procedures, should be a clean the studio. Swab repeatedly use caustic soda (NaOH) saturated solution vacuum chamber wall, (pay attention to the human body skin can not direct contact with caustic soda solution, so as not to burn) purpose is to make up the membrane material plating aluminum (AL) react with NaOH, reaction membrane after layer falls off, and release hydrogen, reoccupy clear water clean vacuum chamber and a cloth stained with gasoline cleaning the dirt in the valve.

2016年10月8日星期六

Coating machine in the design of cent what should notice?

A good coating machine, from the design at the beginning is expected late may attack all the trouble, and in the design of cent can prevent these problems, the vacuum leak detection work continuously is a big flaw in the industry, a lot of people don't get treatment, how to do? From a design standpoint say first!
First of all, in accordance with the process of equipment request to certain vacuum machine can accept the largest leak rate. And follow the probability of each component's biggest floor rate. Then based on the equipment best to resolution that allows the leakage rate of sealing and cohesion, and vacuum coating machine as one of guiding and modulation of the criterion, equipment parts maximum allowable leakage rate, the demand is thought to accepted by pressurized leak detection of pressure and structural strength, in the structure design of cent, in container or system must keep leak detector using excuses, such can lunch bento equipment in the assembly, the debugging process, leakage, if any, have ever found it must turn off the power supply maintenance, in parts design, to prevent possible interference to the possibility of leak detection work, due to the leakage of cent, all needs to use the machine parts, if there was something wrong with a component, and leak detection work can't stop! You must pay attention to this problem!

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