vacuum coating machine: Magnetron Sputtering Coating Machine

显示标签为“Magnetron Sputtering Coating Machine”的博文。显示所有博文

2016年12月26日星期一

What are the applicable scope of the vacuum coating machine?

Vacuum coating machine has been widely used in plastics, craft gifts, packaging, clocks and watches, jewelry, automobile and other industries, marketing throughout the country. We are in the process of operation, has formed an orderly, perfect quality management system. Furnace can choose made of stainless steel, carbon steel, or their combination double water-cooling structure.
According to technological requirements to choose different specifications and types of vacuum evaporation coating machine equipment, its type resistance evaporation, electron beam evaporation, magnetron sputtering, magnetron reactive sputtering, etc. Jig operation form with rotation, orbit and orbit + rotation. Vacuum system by the mechanical pump, diffusion pump, oil pump, enlargement pump, roots pump and molecular pump crucible round and match them all kinds of pneumatic, etc.
Choose plating system way according to the technical requirement and forms, such as resistance evaporation magnetron source to target material and size of arc source, light coating machine measurement can choose digital intelligent vacuum gauge and its quality measurement regulation, and other measurement instruments, such as automatic pressure control instrument, etc. Film thickness measurement can choose square resistance measuring instrument, through rate meter, etc. Inflatable way can choose mass flowmeter, flow meter + needle valve and the corresponding gas valve, and can choose multiple gas pipeline and the corresponding flow parameters.

2016年12月19日星期一

Vacuum coating equipment coating machine

Vacuum coating vendors would vacuum coating equipment vacuum coating when replace electroplating is the biggest challenge facing the diffraction properties of film layer preparation. Because the vacuum coating is done in a vacuum film preparation, film deposition is parallel to the evaporation source, workpiece must be in the face of the evaporation source, use widgets more structure, vertical plane of the... deposition rate even in preferable magnetron sputtering diffraction also is parallel to the plane of the evaporation source only one 5 of the deposition rate. More than this, the vacuum coating for the surface more artifacts or circular workpiece, cannot be used for complex artifacts, which are greatly limited the application of vacuum coating to replace water electroplating, slow down the pace of the application of vacuum coating of green environmental protection. For fasteners, the six sides need coating workpieces, usually using vacuum coating clips, hang card, will make the workpiece surface coating not blind spots, acid and alkali and water vapor and oxygen erosion, forming erosion point will aggravate corrosion of fasteners and so cannot use vacuum coating commonly used clamp fixed artifacts, hang card, and so on.
In order to solve this problem, this project designs a unique basket cage type workpiece, such as screw bolt fasteners in a workpiece in the basket, basket inside the cloth has a flip flap, when the basket cage workpiece cycloid reciprocating motion, fasteners, form the new face of sedimentary source side, multi-layer flip, so as to realize uniform coating of every side of fasteners.

2016年12月14日星期三

Multicellular structure characteristics and industrial application of coating machine

First introduces the classification of the coating technology, the structure characteristics of hard and soft substrate coating equipment and multicellular systems, modern winding coating machine, single room, double room and three chamber vacuum design, secondly introduces linear and cluster type multicellular structure characteristics of the coating machine, t...he last large vacuum coating equipment industry application and the progress are described.
The structure characteristics of hard and soft substrate coating equipment and vacuum chamber system more winding coating machine on the flexible material is continuous coating large specialized equipment. Whether to adopt the atmosphere to the atmosphere (air - to - air) or semi-continuous, basically see plated substrate thickness, productivity and economic benefits to comprehensive consideration of the equipment. Coating for paper and polymer and steelskin belt areas this scheme has certain advantages, the vacuum coating the coating of large area, some new varieties, more than in winding coating machine.
Generally fall into two categories:
(1) the capacitor, packaging and decoration such as vacuum coating.
(2) the thermal insulation, heat reflection or magnetic storage products vacuum coating.

2016年12月8日星期四

Vacuum coating machine with stainless steel pneumatic valve

Stainless steel vacuum coating machine pneumatic valve works by rotary valve love to make the valve flow or occlusion. Pneumatic valve switch light, small size, can be made into large-caliber, reliable sealing, simple structure, easy maintenance, and spherical sealing surface often in the closed state, can not easily be eroded media, has been widely used in various industries.

Stainless steel vacuum coating machine pneumatic ball and plug valves belong to the same type, only its closure member is a sphere, the sphere rotating around the center line valve to achieve open, and close a valve.

Stainless steel vacuum coating machine pneumatic valve in the pipeline is mainly used for cutting speed, distribution and change the direction of flow of the medium. Pneumatic valve is a new type of valve is widely used in recent years, it has the following advantages：

1. Fluid resistance, its drag coefficient with the same pipe lengths are equal.
2. Simple structure, small size and light weight.
3. Compact and reliable valve sealing surface material widely used plastic, sealing, in true 4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation of 90 °, to facilitate remote control.
5. Easy maintenance, simple pneumatic valve structure, seals are generally activities, the removal replacement is more convenient.
6. When fully open or fully closed, the sealing surface and the dielectric isolation ball and seat, through the media, will not cause erosion of the valve sealing surface.
7. Wide range of applications, from small diameter to a few millimeters to a few meters from high vacuum to high pressure can be applied.

Stainless steel pneumatic valve has been widely used in various sectors of petroleum, chemical, power generation, paper, nuclear, aviation, rockets, as well as people's daily life.

2016年11月27日星期日

How do you know the vacuum coating machine is good or bad

Which you can see, the development of vacuum coating technology of vacuum coating machine and vacuum coating is closely tied to the successful development of oil.
This is decided by the effect of vacuum coating of oil. In the process of vacuum coating, vacuum coating machine coating of oil to play the role of a strong bonding pieces and metal film plated (i.e., as the plating pieces of floor coating); After vacuum coating, should be coated with a layer of oil coating on the surface of the plating, then the oil and protect the metal film and dyeing effect (i.e., as a plating coating). Most of the material before a coating, must be coated with a thin layer of oil coating on the surface of the plating, thoroughly dry again after coating, otherwise, the plating on the metal film off, with the hand gently wipe away.
Vacuum coating machine is good or bad decision factors:
In the process of vacuum coating, coating quality depends greatly on the quality of the coating. Through the application of vacuum coating technology, plastic surface metallization, combine organic materials and inorganic materials, greatly improved its physical and chemical properties.

2016年11月16日星期三

Vacuum coating equipment ABS plastic plating common process

Vacuum coating equipment ABS plastic plating process can be divided into three parts, this is the pre-treatment process, chemical plating and electroplating processes. Each section contains a number of processes or procedures.
(1) vacuum coating equipment ABS plastic plating pretreatment process for pre-treatment process, including surface finishing, stress checks, degreasing and coarsen...ing.

① surface finishing. ABS plastics before the treatment, to be a surface finishing, this is because in the plastic injection molding process there will be residual stress. Special gates and a portion corresponding to the gate, there will be the internal stress.

② the stress screening method. At room temperature injection molded ABS plastic release acetic immersed 2 ~ 3min, then carefully cleaned surface, dry.
③ degreasing. You can have a lot of choice in addition to oil business, after degreasing, first wash in hot water, then wash in water, and then in a 5% sulfuric acid neutralization, and then cleaned before entering the roughing process, so you can protection roughening solution so life is extended.

④ coarsening. ABS plastic roughening methods there are three types, namely high acid, high chromic acid and phosphoric acid type, from the point of view of environmental protection, it should adopt the high sulfate type.
(2) vacuum coating machine ABS plastic plating process plating process includes sensitization, activation, electroless copper or nickel plating
3) vacuum coating machine ABS plastic plating process is divided into thick plating, decorative and functional electroplating plating three.
① vacuum coating equipment thicker plating. Due to the chemical coating is very thin, make metalized plastic achieve the effect, the coating must have a certain thickness, so to thicken after plating plating.
② vacuum coating equipment decorative plating decorative plating can be a copper-nickel-chromium process, it can be bright copper then other finishing, such as brushing bronze after treatment, it can be bright nickel plated copper after adding in the light, then plated imitation gold.
③ vacuum coating equipment functional electroplating. Functional functional purpose actually depends mainly on the nature of the surface electroplated coating to be embodied. In fact, from a broad perspective, also a decorative function, but the function mentioned here, or physical or chemical means, or electrical properties. For example the conductive coating, reflective coatings, electromagnetic shielding coating, welding coating and the like.

2016年11月13日星期日

Analysis Principle vacuum coating equipment

Principle is the principle of magnetron sputtering vacuum coating equipment , as follows:
Colliding electrons accelerated in the electric field toward the substrate during in and argon atoms, a large number of ionized argon ions and electrons, the electrons onto the substrate. Argon ions accelerated in the electric field bombardment target, a large number of target atoms sputtered, neutral target atoms... deposited in a film on the substrate.
Secondary electrons accelerated toward the substrate in the process influenced by the magnetic force of the magnetic field Lorenzi, bound within plasma region near the target surface, a high plasma density region, under the effect of the secondary electrons around the magnetic field the target surface in a circular motion, the motion path of the electrons is very long, constantly in motion the process of collision ionization of argon atoms with a large amount of argon ion bombardment target, after several collisions electron energy decreases, get rid of the shackles of the magnetic field lines , away from the target, eventually deposited on the substrate.
Magnetron sputtering is bound to a magnetic field and to extend the path of movement of electrons, the electrons change the direction of motion, increase the ionization rate of the working gas and the efficient use of energy of the electron vacuum coating apparatus.
Electronic destination just substrates, the vacuum chamber wall and the target source anode is electronic home. But generally the vacuum chamber and the substrate and the anode potential in the same. Interaction between magnetic field and electric field so that a single spiral electron trajectory in three dimensions, and not only in a circular motion in the target surface. As for the type of the target surface sputtering the circumferential contour, and that the magnetic field lines are targets of the circumferential shape of circular. Distribution of magnetic field lines in different directions will film a great relationship.
Coating machine manufacturers said, not only in the interaction mechanism magnetron sputtering magnetic and electric fields of work, multi-arc plated target ion source, a plasma source and so work under this principle. The difference is that the electric field direction, voltage and current magnitude only.

2016年11月10日星期四

Car paint coating merchants to introduce the benefits of the coating

Application of coating on the eyes, coating are commonly used in the camera lens, such as myopia, hyperopia, presbyopic glasses corrective lenses.
Coating is very thin, transparent film on the surface plating. The purpose is to wish to reduce the reflection of light, increase light transmittance, anti-ultraviolet radiation and minimizing down, ghost; Different colors of coating, also make different imaging color balance. In addition, the coating can be delay aging lens, color changing time.
Application in automobile, coating and beauty is the highest measures of protection of paint, can avoid oxidation, to brighten up to the paint, acid and alkali resistance, oxidation resistance, resistance to ultraviolet radiation, such as multiple functions. Because itself is a kind of inorganic membrane materials, no damage to paint.
In to the car coating, the color of its body due to aging embrittlement of paint and corrosion formation of oxide layer will go away for years. Can increase the surface hardness, avoid scratches and small aperture. Hold time is longest, about more than a year.
Coating is not perfect, the brightness is inferior to seal glair when finished plating membrane, therefore is not suitable for love beautiful juyou, vehicle coating price in one thousand yuan of above.
The principle of coating, the coating is mainly in order to reduce the reflection. In order to improve the light transmittance of lens and the quality of the image, in the modern lens to the lens coating manufacturing process. Lens coating is according to the principle of optical interference, on the lens surface plating layer thickness of about a quarter wavelength of the material (usually a fluoride), make the lens to the wavelength of light reflection to a minimum. Obviously, a membrane only work on a light, and multi-layer coating can work on a variety of colours. Multilayer coating with different materials usually repeatedly on lens surface plating layer with different thickness. Multilayer coating can greatly improve the light transmittance of the lens, for example, without coating on the surface of the lens every reflectivity of 5%, after the single layer coating down to 2%, and the multi-layer coating can be down to 0.2%, in this way, can greatly reduce the diffuse reflection between each camera lens, so as to improve the contrast of image and Octavia degrees.

2016年11月2日星期三

Ion plating is what

Ion plating processing including sputtering deposition and ion plating in two ways. Ion sputtering coating is a kind of coating method based on ion sputtering effect, applicable to the alloy membrane and compound membrane plating system. Splash control sputtering coating machine
Ion plating is in vacuum evaporation coating and sputtering coating developed on the basis of a new technology of film coating, will all kinds of gas discharge mode is introduced into the field of vapor deposition, the vapor deposition process is carried out in the plasma. Particle energy ion plating has greatly increased the membrane layer, can obtain more excellent performance of membrane layer, expanded the application field of "thin film". Is a fast-growing, popular with people of the new technology.
Ion plating is characterized by: coating, artifacts (substrate) with negative bias, the artifact is always affected by high-energy ion bombardment. Good form membrane layer of film adhesion, good film layer winding plating, membrane organization more controllable parameters, membrane layer overall high energy particles, easier for deposition reaction, can get compound membrane layer at lower temperatures.

2016年10月23日星期日

Vacuum equipment widely used?

Vacuum equipment widely used? Vacuum now this phrase has been widely applied to various fields, vacuum purpose is to protect, vacuum is one of the most clean, the limits of a vacuum there is no pollutants, make the product reduce the impurity hit, and thus to minimize damage and to make up for insufficient and defect in normal circumstances, it is also very bullish on and love the cause of the vacuum of the masses.
Some products, for example, when the coating if exposed to air, will react and air inside of gas and dust, but the use of vacuum coating equipment can avoid these problems.
For food, vacuum can be stored for a long time don't let bad food, the food in vacuum drying, easy deliquescence can keep the same number of cases.
, so to speak, not only in the industrial production, even in daily life, we all can't leave dependence on vacuum, the vacuum equipment manufacturing is based on this, r&d and production of various types of vacuum equipment manufacturers must deeply realize that what's the purpose vacuum, vacuum coating machine, the company said only know that, in the research and development of vacuum equipment modification, don't deviate from the track, can be developed are more likely to make people satisfied with the products.

2016年9月29日星期四

The advantage of tial

Compared with general ion plating technology, multi arc ion plating has many advantages, such as high ionization rate, fast deposition rate, and can be on the applied bias to further improve the matrix deposition, ion energy so as to achieve the membrane/bonding strength, etc, which makes the multi arc ion plating process the rigid structure of thin film deposition TiN class played an important role.
Multi arc ion plating technology can be used to the preparation of gold TiN film, TiC film of black, brown and green ZrO TiAIN membranes, etc. The film has good adhesion, not easy to fall off, diffraction, uniform thickness, coating density, low porosity, etc. At the same time, it can be plated material is wide, can be plated on the surface of the metal and nonmetal is made of metal or metal membrane reaction, saving precious metal materials, free from contamination. As a kind of ideal decorative coating preparation method, multi arc ion plating decorative coating from plating watchcase, strap to ceramic tile, sanitary ware, stair handrail, hall of cylindrical and car body, power distribution cabinet put oneself in another's position, etc. Has been widely used in People's Daily lives and many fields of industrial products.

2016年9月26日星期一

How to measure the thickness of vacuum coating film?

In the use of vacuum coating machine after coating, in order to measure the thickness of the film, may be measuring the thickness of the film with what method?
Quartz crystal is the most direct coating method trace balance method (QCM design), the instrument evaporation source, can be directly driven by the PID control loop drive panel, keep the evaporation rate.
As long as the instrument connected with the system control software, it can control the entire coating process. But the accuracy of the (QCM design) is limited, in part because of its monitoring is the quality of the coating instead of the optical thickness.
And although the QCM design is very stable at low temperatures, but at high temperature, it becomes very sensitive to temperature. After a long period of heating process, it is hard to stop sensor is sensitive to fall into this area, which cause significant error on membrane layer.
Optical monitoring is the first choice for high precision coating monitoring way, this is because it can be more precise control of film thickness (if used properly).
Accuracy improvement comes from many factors, but the most fundamental reason is the optical thickness monitoring.

2016年9月23日星期五

Vacuum coating equipment choice points

▲ optional double water-cooled furnace body structure made of stainless steel, carbon steel, or combinations thereof of.
▲ resistive and inductive heating in the form of two kinds, resistance heating materials molybdenum wire (band), tungsten (band), a graphite rod (plate), tantalum rods, nickel chromium wire (with) several types according to different temperature and process requirements for selection.
▲ heat insulation layer metal and composite two, choose according to different process conditions.
▲ vacuum system consists of a mechanical pump, diffusion pump, oil booster, augmentations pumps, vacuum pumps, etc., and they are matched with a variety of pneumatic, manual, electric valves, piping, etc., can choose according to process requirements.
▲ temperature control system can choose different types of thermometer, temperature control and their sensing element.
▲ intelligent vacuum measurement optional digital vacuum gauge and measure the quality of regulation to ensure the accuracy of the degree of vacuum and product reliability.
▲ can be equipped with multi-point recorder for the whole process analysis, quality control and production management.
▲ According device characteristics, manual, semi-automatic, or a combination of control.
▲ according to the requirement with a variety of inflatable type, mass flowmeter, rotameter, to meet the inflation pressure controlled, multiple inflatable requirements.
▲ of water over-temperature, temperature deviation large, furnace, pumps, heat exchangers, etc., phase diffusion pump, furnace inflatable overvoltage, insufficient gas supply pressure, overcurrent and overvoltage, open circuit and other abnormal situations audible alarm and perform the appropriate protective measures.
▲ fast cooling system and the heat exchanger can choose natural cooling cycle mode, may be used for large-capacity electric furnace outer fast circulating cooling system to improve the cooling rate.

2016年9月20日星期二

Works multi-arc ion plating machine and application description

Multi-arc ion vacuum coating machine is an efficient, safe, pollution-free ion plating equipment, with deposition speed, ionization rate, ion energy, the equipment is simple, low cost, the advantages of producing a large quantity.
Ion plating fact ion sputtering, the conductive target, DC bias power supply; non-conductive targets, using pulsed bias supply. Some multi-arc ion coating machines, you may also need a DC arc or pulsed arc power supply. Bias power supply is in fact between the cathode and the anode position sample bias electric field where the formation is generally negative high voltage cathodes. Free electron emission cathode surface directional acceleration in the electric field emission electron impact gas molecules, so that the ionization, and the gas is expelled electrons are accelerated by the electric field of continuing ionized molecules of other gases, continuous form avalanche effect, hit the gas wear, the formation constant of ionization current. In this case ions are accelerated to bombard the target, the target material atoms expelled surface, and deposited on the sample surface.
Application of multi-arc ion coating machine, multi-arc ion coating machine for different grades of hardware products, general construction hardware, locks, multi-arc ion plating equipment capable, high-grade products such as strap, case, glasses , mobile phone shell, golf equipment, sanitary ware, jewelry, and other commonly used arc / IF (+ DC) magnetron sputtering composite coating equipment, the choice of the size of the models based on loading. The device can be plated gold color, rose gold, brown, brown, tan, blue and other decorative film.

2016年9月13日星期二

The advantage of tial

2016年8月30日星期二

Vacuum coating machine leak detection method

Vacuum coating vendors would introduce leak check is to ensure that the vacuum degree of vacuum coating machine a check measures, referred to as "leak detection, vacuum degree of high and low is directly affect the coating effect, so the leak detection is necessary.
General vacuum indoor air leakage from the chamber wall of small holes or component part (s) before the connection of a fine seam, is formed in the extraction system make vacuum indoor pressure drop after extraction, external and internal pressure gas from high pressure of the external flow of low pressure vacuum inside, cause the loss of vacuum.
Vacuum coating plant is introduced in the process of leak detection, need to pay attention to some problems, can put the leak detection work well.
First, want to make sure the leak is virtual or real leakage, because the workpiece material can produce gas in different extent after heating, possible mistake from external flow into gas, this is the virtual leak, to eliminate this kind of situation.
Second, test the vacuum chamber of the gas seal performance, ensure airtight performance meets the requirements.
Third, check the leakage hole size, shape, position, the speed of air leakage, preparation of solutions and implement.
Fourth, determine the smallest can leak detection rate and the leak detection sensitivity of testing instruments, to detect the leakage situation of maximum range, avoid some drain holes are ignored, improve the accuracy of leak detection.
Fifth, to grasp the leak detection instrument, reaction time and the elimination of time, the time to master well, ensure the leak detection instrument work in place, less time, leak detection effect is poor, time grew, waste gas leak detection and artificial electricity bills.
Sixth, to avoid leaking hole blockage, sometimes due to error, leak detection process, some dust or liquid and so on, the leakage hole was blocked by a thought in the position does not leak, but when the blockage due to the pressure difference inside and outside to improve or for other reasons make the leakage hole is not blocked, and that there is a gas leak.
For vacuum coating equipment to do a good job of leak detection is very important, the cause of vacuum drop varied, we want to solve these reasons one by one, stable coating effect.

2016年8月25日星期四

What products include vacuum equipment?

Complete vacuum equipment from a combination of a large number of components, with the development of vacuum equipment by industry can differentiate into different industry equipment, used in many of the basic industrial products. Composed of vacuum equipment can be divided into four parts: First, get a vacuum device, and second, carrying vacuum equipment, vacuum measuring instruments Third, Fourth, vacuumaccessories.
Vacuum equipment
Vacuum equipment is a pump, subdivision include: Roots vacuum pumps, reciprocating pumps, rotary piston vacuum pumps, rotary vane vacuum pumps, liquid ring vacuum pumps, steam pumps, jet pumps, molecular pumps, ion pumps. Need to learn more about the data and parameters for each pump, vacuum pump products please venue area.
Vacuum carrying equipment
That is the main bearer of vacuum equipment vacuum equipment, each industry is different, such as coating industry called vacuum coating equipment, drying industry called vacuum dryer, the packaging industry called vacuum packing machines, equipment for each type of industry they can be divided into different functional processes device. Here's to the film industry for example:
Vacuum coating equipment can be divided into vacuum magnetron sputtering equipment, vacuum evaporation coating equipment, vacuum ion plating equipment, vacuum physical vapor deposition equipment, vacuum optical coating equipment. Each device because of the use of technology and technology is different so there are differences, but also because of different products require different types of processes.
Vacuum measuring instruments
Vacuum measuring instruments include vacuum pressure tester, flow meter, vacuum leak. Vacuum pressure tester called the vacuum gauge (resistive vacuum gauge, compound vacuum gauge, thermocouple vacuum gauge, etc.); vacuum leak leak sparks, halogen leak detector, helium leak detectors, etc; flow meter there rotameter, dropper flowmeter, mass flowmeter.
Vacuum Accessories
Vacuum fittings are connected to each vacuum equipment components ties, commonly used vacuum accessories vacuum valves, vacuum line fittings, vacuum pump oil.

2016年8月22日星期一

Vacuum coating technology

Vacuum coating technology is a new technology developed in recent years. The principle of it is solid metal (such as aluminum, etc.) in the condition of high vacuum heat gasification, then to molecules or atoms form sedimentary in the substrate surface, thus forming a thin layer of metal film on the surface of the plating. Due to the metal after gasification evenly distributed in the coating machine cavity in the body, so, usually, the formation of the metal film on the surface of the plating is very uniform.
The development of vacuum coating technology and vacuum coating of oil development success is inseparable. In a sense, we can say, even without vacuum coating of oil, there is no vacuum coating. This is decided by the effect of vacuum coating of oil. In the process of vacuum coating, coating of oil to play the role of a strong bonding pieces and metal film plated (i.e., as the plating pieces of floor coating); After vacuum coating, should be coated with a layer of oil coating on the surface of the plating, then the oil and protect the metal film and dyeing effect (i.e., as a plating coating). Most of the material before a coating, must be coated with a thin layer of oil coating on the surface of the plating, thoroughly dry again after coating, otherwise, the plating on the metal film off, with the hand gently wipe away. In the process of vacuum coating, coating quality depends greatly on the quality of the coating.
Compared with the traditional method of plating, vacuum coating technology has many advantages, such as adornment effect is good, strong metal feeling, the cost is low (about 1/3 to 1/2 of traditional electroplating), low pollution, easy operation, etc. Especially on the application of nonmetallic objects, has incomparable advantage over traditional electroplating. In view of this, vacuum coating has been widely used in all kinds of plastic, ceramic, glass, wax, wood products, such as surface metallization.

2016年8月9日星期二

Vacuum coating and coating technology development and application of explanation

PVD (physical vapor deposition) technology in the late 1970s, began to use in improving the mechanical properties of a hard film, the film is produced with high hardness, low friction coefficient, good wear resistance and chemical stability and other advantages. Initially successful application in the field of high-speed steel cutting tools tool manufacturing caused the world's attention, the people in the development of high performance, high reliability, coating equipment, also carbide, ceramic knives in a more in-depth coatings applied research. PVD process has no adverse impact on the environment, in line with the development of modern green manufacturing.

Titanium treatment process temperature can be controlled below 150 ~ 500 ℃, so the process can be used for coating titanium substrate of a variety of materials, not only has colorful decorative effect, even more important is the use of PVD technology allows coating has excellent the physical and chemical properties, physical properties greatly enhanced surface hardness, friction coefficient and other indicators such as the matrix.

2016年7月14日星期四

The vacuum knowledge

First, the basic concept of vacuum
Vacuum technology, the "vacuum" refers to a given space, the gas pressure is below atmospheric pressure gas state, that is to say, compared with the normal atmospheric pressure, a gas is relatively lean state.
　The degree of vacuum is an objective measure of the degree of lean gas. According to the theory of vacuum technology, the vacuum level is usually represented by gas pressure. In the International System of Units, the pressure is Pa (Pa) as a unit 1Pa = 1N / m2. Another common unit as well as child care (Torr), millimeters of mercury (mmHg), millibar (mbar), engineering atmospheric pressure (kg / cm 2).
　Divided vacuum region is no uniform requirement, it usually is divided country:
Rough vacuum: (760 to 10) Torr
Low vacuum: (10 to 10-3) Torr
High vacuum: (10-3 to 10-8) Torr
Ultrahigh vacuum: (10-8 ~ 10-12) care
XHV: 10-12 Torr
　Relations care and Pa: 1 Torr = 1 mm Hg (mmHg) = 133.322Pa, 1 Pa = 7.5 × 10-3 Torr.
　Features vacuum region of their different applications are different, such as vacuum cleaners work in rough area, thermos bottle, light bulbs and other work in the low vacuum region, while the vacuum switch and some other vacuum devices are working in a high vacuum region.All of the vacuum pressure need the vacuum pumps,or vacuum system to reach,such as rotary vane vacuum pump,liquid ring vacuum pump,rotary piston vacuum pump,dry scroll vacuum pump and so on.

订阅：博文 (Atom)