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Nitrogen plasma surface treatment method for metallurgical coating of engineering product

Nitrogen plasma surface treatment method for metallurgical coating of engineering product

Engineering product metallurgical coating nitrogen plasma surface treatment method:         Metallurgical coating methods are used in various engineering products to improve their corrosion resistance, wear resistance, fatigue strength and surface hardness. There are two coating methods. One is to attach a layer of substance on the surface of the workpiece; the other is to form a diffusion layer of different substances from the surface of the workpiece. This layer has a measurable concentration gradient and is consistent with the workpiece. The near surface becomes one. Nitrogen plasma surface treatment method         These two coatings can also exist at the same time. For example, for high-load workpieces, a hard nitride diffusion layer is generally formed first, and it is used to reliably support a harder TiN adhesion layer. Many such metallurgical coatings are being produced by physical vapor deposition (PVD) and chemical vapor deposition (CVD) methods.         The PVD coating system solidifies and deposits the solid coating material on the surface of a relatively cold workpiece through vaporization or sputtering. The temperature of the workpiece is generally based on the principle of not reducing the internal properties of the material. However, the adhesion between the PVD coating and even a well-cleaned surface is still not great, so applications are often limited.         The CVD coating system uses liquid or gaseous coating materials to cause a combination of chemical reactions on the surface of a relatively high temperature workpiece. Although the high temperature of the surface of the workpiece is sufficient to promote the combination of chemical reactions, it is also sufficient to cause unwanted changes in the original properties of the workpiece. In order to restore the internal properties of the material, a follow-up process-heat treatment is required.         Using a nitrogen plasma surface treatment method, the two electrodes are placed in a mixed gas with an appropriate partial pressure, and a voltage is applied between them to generate a glow discharge for plasma nitriding. One electrode, the anode, is a grounded vacuum cover. The other is the cathode. It is the workpiece to be ion-nitrided. Compared with the grounded vacuum cover, the workpiece is at a negative potential when nitriding. Connect this diode circuit to a transformer power supply. The current limiting resistor can change the resistance in the external circuit, and therefore, can independently adjust the current at any voltage level.         The currently used power supply can independently select and control the amplitude, duration and period of the voltage, so that the negative nitrogen ions in the plasma zone can be uniformly covered on the surface of the workpiece without causing serious heat generation. The process controller can independently adjust the nitrogen ion concentration and temperature on the surface of the workpiece.         Nitrogen plasma surface treatment is a normal limited diffusion process. When there are nitrogen atoms, the metallurgical process close to the surface of the workpiece and deep into the workpiece is mainly determined by the concentration gradient of nitrogen element, and the influence of the surrounding plasma parameters is second.         Nitrogen plasma surface treatment is different from other helium technology. In the process, it uses glow discharge phenomenon to excite nitrogen. Exciting nitrogen in this way has many very important results:         (1) Plasma nitriding can better control the composition, structure and performance of the surface of the finished product. The result of ammoniation does not produce a mixed phase (compound area) which is often brittle. For non-ferrous metal materials, cast iron and alloy steel, this is an effective surface treatment method.         (2) Plasma nitriding can be performed at a temperature lower than conventional nitriding, so that the high performance of the core can be maintained. Low temperature sputtering can remove dirt on the surface of the workpiece, and nitriding can be completed in a short time at this low temperature.         (3) Plasma nitriding can solve environmental problems, because the gas discharged from the ion ammoniation furnace is non-toxic and does not explode, and can be directly discharged outdoors, which requires expensive follow-up cleaning work and in accordance with the EPA approved method Post-processing to clean the falling agent.

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Application of Chip Plasma Cleaning FPC Chip Plasma Processor

Application of Chip Plasma Cleaning FPC Chip Plasma Processor

        Application of plasma processor in FPC circuit board industry:         As the substrate of electronic components, printed circuit boards have conductivity, which brings challenges to the use of atmospheric pressure process to process printed circuit boards. Any surface pretreatment method, even if only a small potential is generated, will cause short circuits and destroy layout lines. And electronic devices. For this type of electronic applications, a plasma processor system has been developed. The system applies zero voltage to electronic devices during operation, and plasma jet technology has special properties, which provides new possibilities for industrial bonding applications in this field. . Chip plasma cleaning         Application of plasma processor in silicon wafer and chip industry:         Silicon wafers, wafers, and high-performance semiconductors are highly sensitive electronic components. With the development of these technologies, low-pressure plasma manufacturing technology is also constantly developing. The development of plasma processor technology in the atmospheric environment has opened up a new application prospect for fully automated production, especially in fully automated production, the plasma processor has played an important role.         Plasma processors used in mobile phone manufacturing:         In today's consumer electronics market, in addition to pure technical functions, design, appearance, and feel are also the main factors that affect consumers' purchasing decisions. Logo texts, etc., are not wear-resistant and easy to paint off after a long time. All high-quality chassis designs are particularly important for mobile phones. Manufacturers are constantly seeking to adopt environmentally friendly production technologies while considering the overall quality and design. Plasma processors can solve the above problems and avoid the use of volatile organic compounds.         Atmospheric plasma processors have been used in the mobile phone manufacturing industry for many years, enabling mobile phones to have a high-quality appearance:         1. The ultra-fine cleaning provided by the plasma volume can remove all particles.         2. There is a high surface tension on the plastic metal or ceramic shell, which can significantly improve the dispersion and adhesion of the coating.         3. Improve the yield rate in the production process as high as 99%, accelerate the production speed, and reduce the cost drastically.

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Plasma surface treatment of automobile materials in automobile plasma processor

Plasma surface treatment of automobile materials in automobile plasma processor

Plasma surface treatment of automotive materials in automotive plasma processors:         Application of automotive plasma processor to surface treatment of automotive materials can not only improve the bonding quality, but also after plasma cleaning, the surface of the material will also obtain new characteristics, so that the general material can obtain better surface processing performance.         After plasma surface treatment, the surface of the material gets new characteristics, so that ordinary materials get the surface processing performance that the original special materials have. In addition, the plasma cleaning effect eliminates the need for solvent cleaning, which is environmentally friendly and saves cleaning and drying time. Automotive plasma processor         Automobiles have higher and higher requirements for sealing materials, and the demand for sealing rubber strips is also increasing. New technologies and new materials continue to appear, so processing technologies will become more and more complex. In recent years, with the continuous development and maturity of thermoplastic elastomer technology, new thermoplastic elastomer materials such as TPO and TPV have been used more and more widely in automotive sealing strips. The material combines the excellent properties of elastomers and plastics, which is convenient for processing and recyclable, and is gradually replacing EPDM products. The ordinary door seal is composed of a co-extruded solid core bracket and a sponge rubber tube seal. The sponge part has a sealing function after being compressed by the car body door frame. However, when driving at high speed, the external air pressure may exceed the great sealing force provided by the sponge body, resulting in sealing failure.         In order to solve this problem, some companies have designed a new type of sealing profile to introduce magnetic rubber into the sponge body, that is, apply a magnetic coating on the sponge body or add magnetic moldings to directly magnetically attract the metal frame of the fuselage. Thereby increasing the sealing performance of the sponge body. Because the surface tension of these automobile sealing rubber strip materials is very low, when using flannel, flocking, PU, ​​silica gel and other coating processes, the materials are not easy to bond. In the past, manual segmented grinding processes were used to increase the surface roughness of the rubber strips. Applying primer again, the polishing process is time-consuming and labor-intensive, and the production efficiency is low. It cannot cooperate with the extrusion equipment for online processing, which is likely to cause secondary pollution, high cost, and low product qualification rate. Nevertheless, with the continuous improvement of product requirements, its grinding process has been unable to meet the requirements of the Ministry and European standards for automobile production.         Plasma processor is used for the surface treatment of automotive sealant strips:         Low-temperature plasma processor plasma technology is used for surface treatment of various automobile sealing strips. After testing, the surface energy can reach >80dynes/cm. The process of polishing or coating polyester can be removed. No primer is required, and it can be extruded or pressed. The speed of the flocking machine realizes online processing, increases productivity, reduces costs, does not damage the surface of the tape, and meets the environmental protection requirements of coating water-soluble glue. Jet low-temperature plasma has been applied to the door frame sealing strip, door head, window guide groove, window edge, front and rear windshield, front and rear cover sealing strips of cars and automobiles.         After being treated by a plasma processor, the hydrophilicity of the glass is improved, and it is used in medical equipment, which is conducive to the adhesion and growth of cells. In the glass bottle labeling process, the plasma surface treatment machine is used for the pretreatment of the glass bottle body. Through the pretreatment, low-cost and environmentally friendly water-based glue can be used to seal the label.

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Glass plasma surface activation treatment plasma glass processing machine application

Glass plasma surface activation treatment plasma glass processing machine application

Glass plasma surface activation treatment plasma glass processing machine application:         Chengfeng Zhizao has accumulated a wealth of practical experience in the mobile phone glass industry, and has cooperated with many manufacturers to improve the bonding and coating performance of the glass. No matter what kind of glass is used, plasma glass processing machine plasma processing makes the bonding process easier. Plasma glass processing machine         It is difficult to stick glass products, what to do? Plasma glass processing machine will help! For many people, sticking materials to glass is a complicated and difficult process. However, the use of glass plasma surface activation treatment technology can effectively solve this problem.         Plasma glass cleaning includes:         1. Pre-treat glass jars and bottles before labeling.         2. Treat the glass bottle before inkjet printing.         3. Treatment of large area glass panels before coating.         4. Use UV curing adhesive to treat the glass bottle before plastic.         Although the surface of the glass is smooth from the human eye, there will be some impurities on the surface from a microscopic point of view, which will hinder the adhesion. The uneven surfaces of the glass sheets and glass pieces will attract contaminants and cause many problems. Contaminants on the surface of the glass sheets will significantly reduce the bonding quality, leading to defects in the glass sheets during use.         Plasma surface activation treatment of plasma glass processing machine increases the adhesion to glass due to its strong cleaning ability. The gas used to generate plasma (usually compressed air) is discharged by high-energy, after being purified by the plasma, it can be decomposed into ions, electrons, free radicals and other excited particles. This kind of excited particles can even remove organic contaminants on the glass surface at a microscopic level, and can even remove difficult-to-reach peaks and grooves.         The cleaning quality of plasma is stable and reliable, ensuring that all organic pollutants can be removed from the surface of the material, and plasma treatment will ensure a stable, high-quality combination. Surface treatment provides a cost-effective, environmentally friendly and more important process before bonding, printing and coating, which is easy to repeat to ensure high-performance bonding to glass. Adding a plasma glass processing machine can not only increase adhesion, but also produce a consistent and effective effect.         Plasma treatment of the glass plate before coating is an independent online surface activation method used by many large glass producers and manufacturers. This method is suitable for situations where the manufacturer wishes to increase the bonding strength of the glass plate before painting. Plasma surface treatment can be uniformly processed on glass panels of different sizes, and the processing speed does not change much, providing consistent, uniform and activated processing for the glass. Plasma glass processing machine plasma processing technology can significantly improve the production process, ensuring the increase in speed and efficiency.

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Influence of Low Temperature Plasma Technology Treatment Process Design on the Performance of Fabric Sputtered Copper Film

Influence of Low Temperature Plasma Technology Treatment Process Design on the Performance of Fabric Sputtered Copper Film

The influence of low-temperature plasma technology treatment process design on the performance of fabric sputtered copper film:         Nano-copper film is a new type of functional material with surface effect, quantum effect and other characteristics, and its good electrical conductivity is widely used in chemical, textile, medical and electronic industries. Low-temperature plasma treatment technology is an environmentally friendly surface treatment technology that can be applied to the surface treatment of different materials to achieve cleaning, etching, or grafting. Low temperature plasma technology treatment process design         The surface of the textile material is treated with low-temperature plasma technology and the nano-copper film is deposited on the surface of the textile material as a matrix, which can be used as an ideal functional material and increase the added value of textiles. The surface of polyester substrate without plasma pretreatment is smoother and the deposited nano-copper particles are unevenly distributed. However, the surface is uneven after argon plasma pretreatment, and the nano-copper particles can basically cover the surface of the substrate to form a complete film. This indicates that the argon plasma pretreatment has a certain etching effect on the polyester substrate, which increases the surface roughness of the fiber, and the increase in the specific surface area of ​​the nano-copper particles is easier to adsorb on the surface of the fiber.         When the surface of the substrate is not treated by low-temperature plasma technology, the sheet resistance value of the nano-copper film is 215.2 2/0. After argon and oxygen plasma treatment, the sheet resistance of the copper film is 192.7 and 137.6 0/0, respectively, which are reduced by 10 6% and 36.1% conductivity is significantly improved. This is due to the increased probability of nano copper particles reaching the surface of the polyester substrate after the polyester substrate is treated with oxygen plasma; on the other hand, it is also related to the free carrier concentration and mobility in the copper film.         After the substrate is treated by low-temperature plasma technology, the oxygen plasma treatment is designed to desorb the oxygen vacancies or interstitial copper atoms in the film due to the desorption of negatively charged oxygen groups. The increase in the concentration of free carriers causes the resistivity to decrease. After the substrate is plasma treated, the sputtered copper atoms or atomic groups reach the surface of the substrate, and the frequency increases and its energy is significantly enhanced. Deposited on the substrate has enough energy to crystallize and migrate, so the mobility of free carriers is also higher. The film is relatively dense and the particle size is relatively large. At the same time, the strong indirect scattering of the crystal grains also causes the resistivity of the film to decrease.         The contact angle of distilled water droplets on the copper-plated surface of polyester fabric without plasma treatment was 97.42° after about 20 s, and the state was similar to a spherical shape. It was difficult to spread on the surface of the fabric, indicating that the wettability of copper-plated polyester fabric was extremely poor. This is because the molecular structure of polyester fiber lacks hydrophilic functional groups such as hydroxyl and carboxyl groups. There is no direct force between water molecules and polyester fiber macromolecules, so the fabric cannot be wetted for a long time.         The wettability of distilled water droplets on the copper-plated surface of polyester fabric treated with low-temperature argon and oxygen plasma. The droplet shape gradually changed from a spherical non-wetting state to a spreading wet state. The contact angles decreased to 85. 09 ° and 36, respectively. . 79. It can be seen that the plasma treatment improves the penetration effect of droplets on the surface of the copper-plated polyester fabric.         This is because the etching effect of plasma treatment increases the roughness of the fiber surface and also introduces some oxygen-containing polar groups (such as hydroxyl, carboxyl, etc.) on the surface of the fabric, thereby increasing the gap between the copper nanoparticles and the polyester fiber. Interaction. The oxygen plasma pretreatment makes the surface change of the polyester substrate more obvious than that of the argon plasma treatment. The contact angle of droplets on the surface of the copper-plated polyester fabric is smaller and the hydrophilic performance is obviously improved.

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Plasma cleaning machine picture Plasma cleaning machine equipment performance parameter description

Plasma cleaning machine picture Plasma cleaning machine equipment performance parameter description

Plasma cleaning machine picture Plasma cleaning machine equipment performance parameter description:         In various product applications, the process advantages of plasma cleaning machine cleaning are: increased production speed, no open flame in the operation process, safe and effective, stable and reliable process, simple and effective process monitoring. Plasma cleaning machine pictures         Description of the host structure and performance parameters of the plasma cleaning machine equipment:         1. The main unit of the plasma cleaning machine is powered off in the OFF state, while the main unit is powered in the ON state.         The pneumatic control valve is locked.         2. Pressure indication:         Display the current working pressure value.         3. Power display:         Display device, display device operating status, provide power supply voltage, power supply current, real-time power and cumulative power consumption.         4. Power adjustment:         Through the potentiometer knob, the user can adjust the power of the plasma cleaner to obtain the appropriate power. (Slight adjustment, do not use excessive force, so as not to damage the potentiometer)         5. High voltage port:         Connect the high-voltage wire of the spray gun, cut off the power supply during operation, unscrew the cover and black nut during installation, and tighten the high-voltage wire end by hand.         6. Ground wire:         Connect the ground wire of the spray gun, cut off the power supply during operation, unscrew the nut during installation, press the ground wire, and tighten it.         7. Drive power         Provide 24V driving voltage for the rotary spray gun, pay attention to the position of the plug slot when installing, and tighten the outer nut after inserting it.         8. Air outlet:         It is connected with the air pipe of the spray gun to provide kinetic energy for the sprayed plasma cleaning machine.         9. Air inlet:         Required gas source gas pressure range: ≥0.3MPa If the gas source pressure exceeds 1Mpa (10Kg), a pressure limiting valve must be installed externally (different products are treated differently). Nitrogen can be used if there are special technical requirements. Or other specific gas, if there is no compressed gas, or the pressure is lower than 0.05Mpa (0.5Kg), the plasma cleaning machine will automatically stop working and give an alarm. Note: The gas source must be oil-free and water-free.         10. Control:         The host is used to control the interface of the plasma equipment, the control line is twisted pair, and the passive connection must be used when connecting.         11. Power supply port:         220V/380V input power supply. Note: The supporting power supply must be single-phase three-wire, that is, the reliable connection of the ground wire must be ensured. (Other machinery and equipment shells cannot simply be used as ground wires. If there is no reliable grounding circuit, it may cause equipment damage or electric shock.)

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