图片名称

NEWS

Popular Articles

Contact Us

图片名称
图片名称

Service Hotline

13632675935

CRF

TEL：13632675935

E-mail：shaobo@sfi-crf.com

Address: 1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

Who is to blame for the vacuum-type plasma cleaner that cannot be pumped down

Who is to blame for the vacuum-type plasma cleaner that cannot be pumped down

Who is to blame for the vacuum-type plasma cleaner that cannot be pumped down: During the use of the vacuum plasma cleaner, there may be such a phenomenon: the equipment is operating normally, and after replacing the new product, the vacuum increases and cannot be pumped down. Why? Have you discovered the mystery? I will share with you now for reference only. To determine whether the vacuum plasma cleaner vacuum chamber can be pumped backward, such as 30Pa, within 50S when the vacuum chamber is empty, and when processing other products, the equipment does not give an alarm, indicating that there is no problem with the pumping capacity of the vacuum pump. And there is no air leakage in the entire vacuum generating system. Judging from the operating conditions of the vacuum plasma cleaner equipment, the operation of the equipment is stable. If the background vacuum cannot be pumped to the alarm within a set time, such as 200S, it is mainly related to the material of the product being processed. We usually call it "material leakage". If the substance contains volatile substances, such as moisture, solvents, plasticizers, etc., and the vacuum escapes, the vacuum will decrease, which is called outgassing. Material leakage is the leakage rate of the material. Each material is different, and it is mainly determined by the density of the substance. The higher the density, the higher the leakage rate of the substance, and the lower the leakage rate of the substance; the higher the density of the substance molecule. The smaller the gap between, the smaller the density, the larger the gap between the material molecules, and the gaps between the molecules contain gas. In a vacuum state, the smaller the molecular gap inside the substance, the gas slowly flows from the inside of the substance to the outside. Exhaust until the pressure balances, this process is relatively slow, so after the vacuum plasma cleaner is evacuated to a certain degree, the vacuum degree is reduced. The speed of the vacuum degree reduction is related to the quantity of discharge, and the discharge speed also has Relationship, the more the number of times of feeding, the slower the speed of feeding will decrease. If there are volatile substances in the cavity, it can also cause the vacuum to be slow. Such as permeable material-sponge permeable material-copper wire skeleton. Moreover, the vacuum plasma cleaning machine is limited by the overall structure, and generally cannot be modified. The ideological analysis can be solved by increasing the pumping capacity. However, if the product is reduced after the pumping is increased, the vacuum will be reduced, and the power supply will be reduced. The load will increase, and it will be unstable, it is easy to burn out the power supply and matching device, causing unnecessary losses. Generally, the method of extending the vacuum time (changing the system parameters) and reducing the number of venting is used to ensure the normal operation of the equipment; other similar products can also be used, such as cleaning with the equipment. Therefore, before purchasing a vacuum plasma cleaner, you should conduct tests based on samples, and fully consider the impact of material infiltration on the vacuum of the equipment, otherwise it will be difficult to meet the processing requirements of the required products. If the ordered equipment cannot be upgraded or modified, it can only be solved by reducing the amplifier and increasing the pumping time. The explanation of the above-mentioned material leakage affecting the vacuuming of the vacuum plasma cleaner is helpful to you, what other experiences and experiences do you have, please leave a message to communicate and share with us! If you are interested in plasma cleaners or want to know more details, please click Chengfeng Zhizao online customer service consultation, Chengfeng Zhizao is waiting for your call!

MORE +
What is the impedance matching principle of the online plasma cleaning machine, and what are the knowledge points

What is the impedance matching principle of the online plasma cleaning machine, and what are the knowledge points

What is the impedance matching principle of the online plasma cleaning machine, and what are the knowledge points: The impedance adapter seems to be a bridge connecting the reaction chamber, electrode and plasma generator of the online plasma cleaner. Therefore, how does the impedance matching of the online plasma cleaner work? How does it work? Impedance matching is usually used in vacuum online plasma cleaning equipment. The reaction chamber, electrode, plasma generator, etc. are called loads. In a DC circuit with a load, the load resistance is equal to the internal resistance of the power supply as a necessary condition for load matching. This Z high-power DC loop theorem also exists in the corresponding AC loop. Let me explain to you what the next high-frequency circuit with load impedance z looks like. Set the internal impedance of the power supply, that is, the output impedance to (a+jb)Ω. In order to meet the output requirements of the Z high-power load, the load impedance needs to be "matched" with the output impedance of the high-frequency generator. Conjugate matching can make the total impedance become a pure resistance, that is, the load impedance Z must be (a-jb)Ω at this time. In the design of the online plasma cleaner, in order to control the high-frequency current in the loop within a reasonable value range, the output impedance of the high-frequency generator is usually designed as a pure resistance, generally 50Ω. In general, the high-frequency discharge impedance is the capacitive impedance. Due to the changes in the discharge conditions of the reaction chamber in the online plasma cleaner, the high-frequency discharge impedance will change in value. Therefore, it is necessary to adjust the impedance of the matching network and the discharge impedance to achieve Simulate the addition of load impedance to make it consistent with the output impedance of the high-frequency generator to achieve matching. In other words, the matching network must be adjusted through various discharge conditions so that the analog load is also equal to 50Ω. In addition, in order to avoid unnecessary power loss in the matching network due to heat, the location of the matching network is also carefully set. This is one of the factors that affect the matching effect of the online plasma cleaning machine. In future articles, Chengfeng Zhizao will again Talk to everyone. If you have any questions, please click on the online customer service for consultation, Chengfeng Zhizao is waiting for your call!

MORE +
Can plasma treatment equipment enhance ionization? What are some good methods

Can plasma treatment equipment enhance ionization? What are some good methods

Can plasma treatment equipment enhance ionization? What are some good methods: The ionization phenomenon in plasma processing equipment is closely related to the movement of electrons, and enhanced ionization also has a great impact on the effect of plasma processing. Then, how can the ionization effect of plasma processing equipment be enhanced? There are two existing proof methods, one is obtained through the reasonable coordination of the time between the electron and the field position in the elastic collision, and the other is obtained through the "surfing" effect.  For the mechanism of electron acceleration, the ideal condition is that when electrons collide with argon atoms elastically and turn in the electric field, the speed and energy of the electrons will increase; if the above conditions are met, the electrons can obtain ionization energy, even if the electric field strength is very weak. , It can also get ionization energy. In this mechanism, the ideal range of electric field frequency is usually around several thousand MHz. Some scholars have extended this mechanism. They believe that the secondary electrons emitted from the wall and the cathode enter the photodischarge area after being accelerated, and become an additional source of electrons, which is a phenomenon of secondary electron multiplication. When the secondary electrons are released, if the electric field is reversed to achieve the same phase, the ionization can be effectively enhanced. The impulse effect is another evidence mechanism of ionization enhancement. It is generally believed that under the action of a high-frequency alternating electric field, the "impulse" phenomenon of electrons at the interface of the electrode sheath of the plasma treatment equipment can effectively enhance ionization, which is generally expressed as plasma The sheath voltage and sheath of the body treatment equipment fluctuate continuously. Existing calculations and demonstrations show that electrons obtain energy through sheath oscillation, and "surfing" electrons will have a positive effect on the ionization process. Chengfeng Zhizao has been focusing on plasma processing equipment for 20 years. If you have any questions, please click "Online Customer Service" for consultation. Chengfeng Zhizao is looking forward to your call!

MORE +
Research on enhancing the hydrophobicity of epoxy surface by plasma treatment with jet low temperature plasma power supply

Research on enhancing the hydrophobicity of epoxy surface by plasma treatment with jet low temperature plasma power supply

Research on enhancing the hydrophobicity of epoxy surface by plasma treatment with jet low temperature plasma power supply: The surface condition of insulating materials is one of the important factors that determine the size, performance and stability of power equipment. Insulating materials in a high-voltage electric field are prone to flashover discharge along the surface, and the flashover voltage is much lower than the breakdown voltage. How to increase the surface flashover voltage of insulating materials and effectively suppress the occurrence of flashover is a problem that has been working hard to solve. Improving the surface hydrophobicity of insulating materials is an effective way to increase wet flashover and pollution flashover voltage. At present, measures such as silicone oil, silicone grease (RTV), silicone rubber coating and nano-material filling are mainly used to improve the hydrophobicity of the insulating material surface, but these measures have poor coating adhesion, poor uniformity, poor timeliness, and high maintenance costs. shortcoming. Therefore, on the basis of not affecting the insulation performance of the substrate, forming a uniform, dense and long-lasting hydrophobic layer on the surface by new means can effectively overcome these shortcomings and better improve the surface performance of the insulating material. Plasma treatment with jet low-temperature plasma power supply is one of the new methods to change the surface properties of materials, and it has received extensive attention in recent years. The plasma surface modification of the low-temperature plasma power supply is a dry process, which is highly energy-efficient and pollution-free. The modification only involves the surface nanometer range, and the performance of the matrix is ​​not affected. Among the many discharge forms that generate atmospheric pressure low-temperature plasma, the plasma jet developed in recent years is an ideal plasma source for surface treatment of materials. This discharge form separates the discharge generation from the treatment area through the airflow, and has greater processing flexibility. And controllability, it is very suitable for processing large-size and complex-shaped insulating material surfaces. However, the current research on using jet low-temperature plasma power to improve the water repellency is mainly for typical polymer and metal surfaces, and less involved on the surface of insulating materials. The reason for the increase in water repellency caused by the jet low-temperature plasma power source is that with the increase of processing time, the surface energy dispersion component increases slightly, while the polar component decreases sharply with the increase of processing time. Caused by the reduction of the polarity component. The surface of the untreated epoxy has no obvious features, and the surface is relatively rough. The treated epoxy surface showed a specific morphology, and a uniformly distributed dense network structure was formed on the surface, indicating that the jet low-temperature plasma power plasma treatment formed a new material with a fixed morphology structure on the surface. The jet low-temperature plasma power plasma treatment can effectively improve the hydrophobicity of the epoxy surface. As the treatment time increases, the water contact angle of the epoxy surface increases and the surface energy decreases after treatment. The particles of Ar, OH, O and Si contained in the jet interact with the epoxy surface to form a dense network structure on the surface. At the same time, silicon-containing groups are introduced on the surface to effectively reduce the surface polarity and make the epoxy The hydrophobicity of the surface is improved.

MORE +
100+ application examples of automatic plasma cleaning dispenser help the product to increase the efficiency by 20%

100+ application examples of automatic plasma cleaning dispenser help the product to increase the efficiency by 20%

100+ application examples of automatic plasma cleaning dispenser help the product to increase the efficiency by 20%: The utility model of the automatic plasma cleaning dispenser can effectively remove the tiny pollutants on the surface of the material, and at the same time improve the reliability, durability and anti-stripping performance of the water cleaning dispenser, and exhibits good plasma cleaning and dispensing in the actual process. The consistency of the machine will not cause delamination caused by glue overflow, glue breaking and air bubbles. So what are the application examples of plasma dispensing automatic cleaning? Like plasma cleaners, automated plasma cleaner dispensers are also widely used in practical applications. For high-precision fields such as semiconductors, precision electronics, medical care, automotive new energy, military aerospace, etc., due to reliability and safety reasons, generally They all use more complex materials and the time is often limited. Therefore, the process of cleaning first and then dispensing by plasma cleaning dispensers has been promoted and has become a recognized process in the industry. At present, typical applications in plasma cleaning dispensing equipment are as follows. Plasma cleaning technology is applied to smart phones and mobile terminal equipment: The automatic plasma cleaning dispenser can be applied to optical lenses, camera modules, touch screens, headsets, speakers, connectors, heat dissipation materials, PCB/FPC, display panels, metal frames, glass covers, passive components, vibration motors, etc., types There are many, far more than 100+ species, far more than the above list. Application of automated plasma cleaning dispenser in new energy vehicle manufacturing: At present, in the field of automobile manufacturing, plasma cleaners that can be used for the processing of automotive interior parts, engines, windshields, sealing strips, car lights, power batteries and other sub-products have become the mainstream of new energy vehicle production. Its processing capacity Will be enhanced day by day, and at the same time, with the development of the industry, the types of products that plasma cleaners can handle will also continue to expand. Application of automated plasma cleaning dispenser in the medical device industry: The field of medical equipment is also one of the main application areas of plasma cleaning dispensers. Specific products include sterilization boxes, blood collection needles, injection needles, indwelling needles, vacuum blood collection tubes, dialysis filters, pacemakers, surgical gowns, surgical instruments, Dental equipment, breathing masks, etc. Chengfeng Zhizhi has focused on plasma cleaning machines for 20 years, providing customers with plasma cleaning, activation, etching, and coating plasma surface treatment solutions. It is a trusted manufacturer of plasma cleaning machines in the industry. If you have any questions, please click "online customer service" to consult, Chengfeng Zhizao is waiting for your call!

MORE +
What is the difference between the treatment of the PTFE microporous membrane by the plasma cleaning machine and the untreated

What is the difference between the treatment of the PTFE microporous membrane by the plasma cleaning machine and the untreated

What is the difference between the treatment of the PTFE microporous membrane by the plasma cleaning machine and the untreated: In the production of PTFE microporous membranes, plasma cleaning equipment is often used to modify the surface of various materials, such as: sterilization membranes, electrolytic membranes, gas dialysis membranes, ultra-clean membranes, mountaineering clothes, breathable tents, raincoats, etc. . So, what is the relationship between cleaning equipment and PTFE microporous membrane? What is the change of PTFE microporous membrane after treatment by plasma cleaning machine equipment? Due to the low surface energy of the PTFE microporous film itself, it often faces problems of hydrophobicity and adhesion during the application process. If the above problems cannot be completely solved, plasma cleaning equipment can be used for treatment. In the plasma surface modification, plasma grafting modification technology is used more to reduce the contact angle between the surface of the PTFE microporous membrane and water, so that It becomes a hydrophilic material and can also make the surface of the PTFE microporous membrane oleophobic. The surface modification of the PTFE microporous membrane is carried out by plasma cleaning equipment. In a vacuum environment, the plasma generator is used to generate glow discharge from the gas to generate high-energy particles, and carry out a series of physical or chemical reactions with the PTFE microporous membrane. Not only retains the excellent properties of PTFE materials, but also makes PTFE microporous membranes have new hydrophilic, oleophobic and other characteristics, adapting to a wider range of application scenarios and uses. Chengfeng Zhizao has focused on the research and development of plasma technology for 20 years. If you want to know more product details or have questions about the use of the equipment, please click "Online Customer Service", and Chengfeng Zhizao is waiting for your call!

MORE +
< 1...969798...132 > proceed page
图片名称

CRF

National Service Hotline

136 3267 5935

Contact Email

shaobo@sfi-crf.com

Address:1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

图片名称

Add WeChat
Get related information

Links

Apply to exchange friend links

Copyright © Shenzhen Chengfeng Smart Co.

京ICP备10002622号-38

粤公网安备 44030602005200号

图片名称

Cheng Feng Zhi Zuang a focus on plasma research and development for 20 years

We

The services of

Inquire for free sample testing

1-to-1 program customization

24-hour online after-sales service

Source manufacturer

Get the program
%{tishi_zhanwei}%
图片名称

Scan the code for information

诚峰智造