Introduction to the vacuum plating equipment common vacuum coating method

Introduction to the vacuum plating equipment common vacuum coating method

Vacuum plating equipment is used for a class of need in the vacuum coating equipment, coating method is called vacuum coating method. Vacuum coating method is in the heart of the vacuum evaporating metals, alloys or compounds (or sputtering), make them deposited on the surface of the substrate, method. On the material surface plating a layer of thin film, can be material to... obtain some new chemical or physical properties. Vacuum coating method is a new coating process, also known as dry coating method, compared with the wet plating method, it has the features: 1, the film less susceptible to pollution, get good coating compactness, high purity. 2, wide range of membrane materials and the selection of base material, the film thickness can be controlled, with different vacuum plating equipment preparation of different functional thin film. 3, membrane layer and substrate adhesion, strong. 4, does not produce waste, not cause environmental pollution.
Common coating methods include vacuum evaporation, sputtering, ion plating, etc. These three coating methods have their advantages and disadvantages, including ion plating used most widely, its characteristic is: can plating materials including metals, alloys, compounds, such as membrane material evaporation method with evaporation and sputtering, membrane layer adherent strength is good, the plating film density high, uniform, can all plated surface.

Vacuum coating equipment choice points

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.

Vacuum coating equipment operation steps

Vacuum coating equipment operation steps

The operation of the vacuum coating equipment with reference to the equipment manual and vacuum coating machine each knob under the label instructions and dashboard pointer display. General situation is as follows:
1) check the vacuum coating equipment operation control switch in "off" position.
(2) open the total power switch, vacuum coating equipment power.
(3) low pressure valve. Open the charging valve, after hear air flow noise, start up bell valves, bell rises.
(4) fixed tungsten spiral heating installation. The PVDF film and aluminum plate fixed on the rotating disk. Put the aluminium wire wear in the spiral heater element. Clean up each position within the bell jar, ensure that no impurities dirt.
(5) fall in the bell jar.
6. Start the vacuum mechanical pump, vacuum coating equipment.
All landowners compound vacuum gauge power (compound vacuum gauge type: Fzh - 1 a).
A. "1" left knob clockwise rotation to point to the location 2 section of the heat.
B. low vacuum gauge pointer clockwise movement within "2", when the pointer to 110 ma, "1" rotate to the left knob to 2 section measuring position.
Today when the low vacuum gauge pointer within the "2" again moving clockwise to Pa 6.7, into the low pressure valve. "1" then left knob rotation to point 1 section measurement location.
Open cooling water pet-name ruby vacuum coating equipment, start the diffusion pump, heating 40 min.
Attending a low-pressure valve. Repeat all landowners action programs: "1" to point to the lower left knob 2 section measuring position. Low vacuum gauge pointer clockwise movement within "2", when the pointer to Pa 6.7, a high pressure valve (stem clockwise).
Such as low vacuum gauge pointer right within "2" to 0.1 Pa, gauge tube filament switch.
A. launch, zero measurement button "9" rotate to point to launch position.
B. lower left button "1" rotation to point 1 section measurement location.

Vacuum coating machine skill requirements

Vacuum coating machine skill requirements

1, the equipment of vacuum piping and static seal parts (flange, sealing ring, etc.) way of planning should be agree with GB/T6070 rules.
2, in the low vacuum and high vacuum and vacuum coating room on the road should be equipment vacuum measurement regulation, each part of the measurement of vacuum separation. When found that the electric field of measurement forms that trouble, should in the measurement of the inlet device electric field shielding device.
3, if the equipment of main pump used for dispersion pump, on the inlet side of the pump should be installed with oil steam trap trap
4, equipment of coating room should be equipped with observation window, baffle equipment shall be available. Observation window should be able to observe accumulation is the source of the assignment, and other key parts.
5, ion plating coating accumulation is the source of planning what needs to be able to progress in the process of ionization rate and utilization rate of progress of coating materials, reasonable matching accumulation is the source of power, reasonable placement accumulation is the orientation of the source in a vacuum chamber.
6, the reasonable heating equipment, usually heater programming should be plated workpiece temperature rise evenly Shared.
7, artifacts should be with vacuum chamber body insulation, workpiece frame planning should make workpiece membrane layer
8, ion coating equipment should have artifacts usually negative bias and ion bombardment power, ion bombardment power should have resisted the abnormal discharge equipment, keep the operation safe
9, all the parts of the vacuum chamber to meet different potential between the size of the insulation resistance value, all the 4.4.6 according to GB/T11164-1999
1, environmental temperature: 10 to 30 oc
2, relative humidity: no more than 75%
3, cooling water inlet temperature: no more than 25 oc
4, cooling water quality: the city tap water or appropriate quality of water
5, power supply: 380 v three-phase single-phase 50 hz frequency 50 hz or 220 v (used by electrical demand and decide); Voltage shaking size: 342-399 v or 198-231 - v;
Hz frequency shake size: 49-51.
6, the compressed air equipment, liquid nitrogen, cold water, hot water, such as pressure, temperature, consumption, etc., shall be in the product use manual.
7, equipment, environment, air cleaning, there should be no corrosion or cause electrical appliances and other metal parts appearance caused between metal conductive dust or gas exists.

Vacuum coating machine basic characteristics and types of valves

Vacuum coating machine vacuum valve characteristics, types: basic characteristics of the vacuum valve having high airtightness (sealing reliable); resistance to airflow as small as possible (i.e., the conductance valve as large as possible); a sealing member wear well, can be used repeatedly, long life; body material and seals put a small volume; flexible operation, easy to clean install, reliable performance and easy maintenance. In addition, the requirements for ultra-high vacuum valves can also bake temperature (450 ℃); on the throttle can even adjust the gas flow requirements.

Common vacuum valve body material mainly metal and glass. Manual vacuum valve actuator handwheel made of high strength plastic material. Glass vacuum piston known as "Hancock" is generally used on glass vacuum system, a small vacuum, vacuum gauge regulatory or calibration systems. The advantage is relatively easy to make, easy to use, easy to clean observation, chemical stability and good insulation, put less gas and so on. The downside is that because of the fragility of glass and curved mouth pistons coated with a layer of fat, so limit its scope. Vacuum industrial production needs, such as vacuum coating equipment, vacuum smelting equipment, vacuum heat treatment equipment, space environment simulation equipment, rocket engine simulation equipment, satellite surface charged analog devices, particle accelerators and controlled nuclear fusion equipment, heavy particle accelerators all metal valve.

Vacuum coating machine vacuum valves are usually classified according to the operating characteristics of the valve, drive principle, connection and usage can be divided into the following categories:
① according to the working pressure: low vacuum valve, high-vacuum valves, ultra-high vacuum valve;
② according to use: cut-off valves, isolation valves, charge (discharge) valve, throttle + feed valve closed valve,, etc;
③ According transmission principle: a manual valve, flashlight dual valves, solenoid valves, pneumatic valves, hydraulic vacuum valve;
④ according to the material: glass vacuum piston (Hancock), metal vacuum valve;
⑤ according to structural characteristics: a flapper valve, flap valves, butterfly valves, ball valves, valve rod, septum valve, gate valve, two-way valve, three-way valve, four-way valves, globe valves, right angle valve.

Metallization process - Surface Treatment

                 

Can be made into almost any kind of metal wire can be sputtering, metal spraying has many important applications, metallized decorative effect can be provided for the product.

Metallization technology has certain requirements:

Metallization process work must be pretreated substrate surface, the membrane material and the substrate metallization citation belongs mechanical bond, to get a good degree of mechanical bonding must be cleaned. Wire must be free of rust, grease-free, clean, standards-compliant. The substrate to be frosted.

Spraying construction environment metallization process should be higher than 5 degrees Celsius, if the air is humid, rain must be indoors. Spraying using thermal spraying method, the distance preferably 100-200mm, thermally sprayed belong manual operation, with respect to the vacuum coating apparatus by certain disadvantages for coating system.

When spraying, the spray gun should be perpendicular to the substrate, the angle of not less than 45 degrees, the maximum distance of not more than 200mm.

Spray coating thickness should grasp, generally after more than 0.1mm thickness to be layered deposition, the substrate temperature must not exceed 100 degrees Celsius, the moving speed of the gun should be uniform, 300-400mm / s better, spraying process can not hand touching sprayed surfaces.

Qualified metallized surfaces should be evenly without bubbles, no adhesion to the metal, you can use a magnifying glass to check the appearance, not only the appearance of quality to be qualified, but also qualified plating thickness, during an inspection if found to be defective should be re-fill plating .

Common metallization

Chrome: Chrome is a silvery white metal, a little bluish, there are five types, it is now widely used product modeling plating. There are chrome-plated guard, black chrome plating, hard chrome plating, porous chrome, white chrome.

Plated alloy: Alloy is required development of industrial production, some products require alloy properties, such as cobalt alloy, it looks pale pink, has strong corrosion resistance, plating out the effect of the system is very warm. For example tin alloy, corrosion resistance is better, a higher wear resistance and hardness, good polishing performance.

Silvered: a white light, high plasticity of the noble metal, silver having good conductive properties, can be improved conductivity performance of the product, it is fine silver metal, also commonly used for decoration.

What is evaporative vacuum coating machine works?

                       

  What is evaporative vacuum coating machine works? Vacuum coating equipment factory, said an evaporative vacuum coating machine running principle is indoor use vacuum resistance heating method, stick tightly on the resistance wire wire melting vaporization, the vaporization of metal molecules deposited on the substrate, and obtain smooth and reflectivity of film, achieve the goal of object surface decorates beautification.
  Get affordable plastic surface decoration ideal equipment, any color of plastic after vacuum coating can plated to gold, silver, red, purple, blue, grey, black, colorful and various colors, with improve product class, exterior more show showily.
 High-power evaporation system, silicon controlled rectifier control, high repeatability, stability, unique plating electrode design, good workpiece rotational structure, smooth rotation speed is adjustable, high yield and high yield.
 Evaporative vacuum coating machine is widely used in plastic, nylon, glass, ceramic, resin materials such as toys, decorations, crafts, following, electronic products, lighting accessories, cosmetic packaging and other industries.