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06

2022-12

Characteristics of Meitengqi MG4P-YY-580

Meitengqi brand MG4P-YY-580 multi-functional floor grinding machine, to meet the needs of professional users for large area industrial floor grinding efficiency, very cost-effective. Suitable for marble, granite, concrete floor grinding renovation, etc. Product Features: 1. The appearance design is novel and elegant. 2. Folding handle, integrated central control panel design, convenient operation, safe and reliable, ergonomic, easy to move the handle. 3, high-power (7.5HP) variable frequency motor, to meet the requirements of industrial floor grinding for a long time and frequent use. 4, automatic pressure adjustment control system, to meet the needs of different construction technology. 5. It can be equipped with dust collection equipment to realize dry and wet working modes. 6. The rotary drain switch and the central water outlet system of the grinding disc can effectively solve the secondary loss of grinding consumables and the grinding line generated during work, thus greatly improving the work efficiency. 7. The multi-functional grinding disc can be installed with various grinding consumables to reduce your construction cost as much as possible. Want to know more welcome to call Guangzhou Qing Qin Yu Environmental Protection Technology Co., Ltd., we wholeheartedly for your service! http://www.qingqinyu.com

2022-12-06

28

2022-11

People's Network Review: Adhere to the Ninth Edition of the Prevention and Control Plan and Implement 20 Optimization Measures

People's Network Review: Adhere to the Ninth Edition of the Prevention and Control Plan and Implement 20 Optimization Measures Adhere to the ninth edition of the prevention and control plan, implement 20 optimization measures, ensure that it is not shaken, not out of shape, and really improve the scientific, accurate and effective prevention and control of the epidemic. Familiar with the policy is the premise, strict implementation is the key, supervision and accountability is the guarantee. At present, affected by virus variation and winter and spring climate factors, the epidemic prevention and control situation is grim and complex, the number of new infections continues to increase, the epidemic spread a wide range, the transmission chain. The more severe and complex the situation is, the more necessary it is to implement the Party Central Committee's decision-making and deployment in a complete, accurate and comprehensive manner, adhere to the "three unswerving principles", adhere to the ninth version of the prevention and control plan, implement 20 optimization measures, and implement the requirements of efficient and coordinated epidemic prevention and control and economic and social development. Judging from the contents of the 20 optimization measures, whether it is not allowed to expand the scope of high-risk areas at will, the high-risk areas that meet the conditions for unsealing should be unsealed in time to minimize the number of control personnel, or the areas without epidemic situation should not expand the scope of nucleic acid detection. Generally, all nucleic acid detection is not carried out according to administrative areas, and unscientific practices such as "two inspections a day" and "three inspections a day" are corrected, they are all based on the grasp of the laws of virus mutation and spread and the summary of the prevention and control experience of various places in the past three years. They are measures that seek progress in stability, take small steps without stopping, conform to my country's national conditions, and are more scientific and accurate. It is not "lying flat" and must be implemented without compromise. To win the battle of normalized epidemic prevention and control, valuable is confidence and fighting spirit, valuable is scientific prevention and control, precise policy. The most urgent task is to adhere to the ninth version of the prevention and control plan, implement 20 optimization measures, ensure that it is not wavering and not out of shape, and really improve the scientificity, accuracy and effectiveness of epidemic prevention and control. Familiarity with the policy is a prerequisite. Both leading cadres at all levels and grassroots workers must accurately grasp the specific content and spiritual thrust of the ninth edition of the prevention and control plan and the 20 optimization measures. Just a few days ago, the Comprehensive Group of the Joint Prevention and Control Mechanism of the State Council issued a notice on four documents, including the Measures for the Implementation of Nucleic Acid Testing for the Prevention and Control of the New Crown Pneumonia Epidemic and the Plan for the Delineation and Control of the Risk Zone for the New Crown Pneumonia Epidemic, to facilitate the relevant staff to better understand and implement the 20 optimization measures. Only by accurately grasping the latest requirements can we do a good job of prevention and control with the times. Strict enforcement is key. The determination to resolutely win the battle of normalized epidemic prevention and control should be reflected in the scientific and accurate prevention and control work, reflecting the implementation of the "two as soon as possible" results of curbing the spread of the epidemic and restoring normal production and living order as soon as possible. In the 20 optimization measures, it is proposed that "it is strictly prohibited to arbitrarily close schools and suspend classes, stop work and stop production, block traffic without approval, arbitrarily adopt" silent "management, arbitrarily close control, not unsealed for a long time, arbitrarily stop diagnosis and other kinds of layer-by-layer overweight behaviors." In this regard, local party committees and governments must implement territorial responsibilities, strictly implement the decisions and deployments of the Party Central Committee, and further correct practices that are inconsistent with the ninth version of the prevention and control plan and the 20 optimization measures. Supervision and accountability is the guarantee. We should not only oppose irresponsible attitudes and practices such as relaxation, liberalization and "lying flat", but also resolutely rectify the problems of "increasing the number of layers" and "one size fits all", and oppose and overcome any form of formalism and bureaucracy. It is necessary to give full play to the role of mechanisms such as administrative supervision and disciplinary inspection interviews, increase notification and public exposure, and seriously pursue responsibility for those who cause serious consequences in accordance with laws and regulations. The more the epidemic prevention and control is at its most strenuous, the more we must adhere to the prevention and control of the epidemic in accordance with the law, promote the prevention and control work on the track of the rule of law, and comprehensively improve the ability to prevent, control and govern in accordance with the law. Compliance with the law, strict compliance with epidemic prevention requirements, the public is the main body of epidemic prevention and control. Believing in the people, relying on the people, believing in science, relying on science, the past is still the magic weapon to defeat the epidemic. We will be able to protect people's lives and health to the greatest extent possible and minimize the impact of the epidemic on economic and social development.

2022-11-28

28

2022-11

Clear the use of road cutting machine

1. As soon as the new pavement is repaired, it is necessary to cut the expansion gap to resist the influence of cold and hot weather on the ground. 2, the old road has cracks and damage need to be repaired, cut off some damaged places. 3. The expansion of the road needs to cut the original corners neatly. 4. Renovation cutting machine for plant floor, high-speed pavement and ditch sewer 5. Experimental detection, cutting of cement, asphalt, rock, etc. to observe the internal structure, etc. If you want to know more about the use of road cutting machines, you can always call the http://www.qingqinyu.com/product/36/ of Guangzhou Qing Qin Yu Environmental Protection Technology Co., Ltd.

2022-11-28

28

2022-11

Method of polishing and grinding

Method of polishing grinding: Grinding is the grinding tool (hereinafter referred to as the grinding tool) surface embedded abrasive or coated abrasive and add lubricant, under certain pressure, the tool and the grinding tool contact and do relative movement, through the abrasive action, from the workpiece surface cut a layer of very thin chip, so that the workpiece has a precise size, accurate geometry and high surface roughness. Its essence is to use free abrasive particles to carry out micro-cutting including physical and chemical comprehensive effects on the surface of the workpiece through the grinding tool. Features:(1) In mechanical grinding, the machine tool-tool-workpiece system is in an elastic floating state. (2) The workpiece to be ground is not subject to any force and is therefore in a free state. (3) The speed of the grinding movement is usually below 30 m/min, which is about 1% of the grinding speed. (4) When grinding, only a very thin layer of material can be cut off, so the heat generated is less, the processing deformation is small, and the surface deterioration layer is also thin. (5) There is residual compressive stress on the grinding surface, which is beneficial to improve the fatigue strength of the workpiece surface. (6) The operation is simple and generally does not require complicated and expensive equipment. (7) Adaptability is good. (8) grinding can obtain very low surface roughness. 1. Fluid polishing Fluid polishing is to rely on high-speed flow of liquid and abrasive particles to wash the surface of the workpiece to achieve the purpose of polishing. Commonly used methods are: abrasive jet processing, liquid jet processing, fluid power grinding. Fluid power grinding is driven by hydraulic pressure, The liquid medium carrying the abrasive particles is caused to flow back and forth at high speed over the surface of the workpiece. The medium mainly uses special compounds with good flowability at lower pressure. (polymer-like substance) and mixed with abrasive, abrasive can be used silicon carbide powder. 2. Mechanical polishing Mechanical polishing is a method of polishing a smooth surface by cutting and plastic deformation of the surface of the material to remove the convex part after polishing, Generally use oilstone, wool wheel, sandpaper, etc., mainly manual operation, special parts such as the surface of the rotary body, Auxiliary tools such as turntables can be used, and the method of super-lapping can be used for high surface quality requirements. Super lapping is a special abrasive tool, In the polishing liquid containing abrasives, it is tightly pressed on the surface of the workpiece to be processed for high-speed rotating motion. Using this technology, the surface roughness of Ra0.008 μm can be achieved, which is the highest among various polishing methods. Optical lens molds often use this method. 3. Ultrasonic polishing The workpiece is placed in the abrasive suspension and placed together in the ultrasonic field, relying on the oscillation of the ultrasonic, The abrasive is ground and polished on the surface of the workpiece. Ultrasonic machining macro force is small, will not cause deformation of the workpiece, but tooling production and installation is difficult. Ultrasonic machining can be combined with chemical or electrochemical methods. On the basis of solution corrosion and electrolysis, ultrasonic vibration is applied to stir the solution, The dissolution products on the surface of the workpiece are separated, and the corrosion or electrolyte near the surface is uniform; Ultrasonic cavitation in the liquid can also inhibit the corrosion process, conducive to surface brightening. 4. Electrolytic polishing The basic principle of electrolytic polishing is the same as chemical polishing, that is, by selectively dissolving the small protruding parts of the surface of the material, Make the surface smooth. Compared with chemical polishing, the effect of cathode reaction can be eliminated, and the effect is better. The electrochemical polishing process is divided into two steps: (1) Macroscopic leveling dissolution products diffuse into the electrolyte, and the geometric roughness of the material surface decreases, Ra> 1μm. (2) micro light level anode polarization, surface brightness, Ra <1μm. 5. Fluid polishing Fluid polishing is to rely on high-speed flow of liquid and abrasive particles to wash the surface of the workpiece to achieve the purpose of polishing. Commonly used methods are: abrasive jet processing, liquid jet processing, fluid power grinding. Fluid power grinding is driven by hydraulic pressure, The liquid medium carrying the abrasive particles is caused to flow back and forth at high speed over the surface of the workpiece. The medium is mainly made of special compounds (polymer-like substances) with good flowability at lower pressure and mixed with abrasives, The abrasive may use silicon carbide powder. 6. Chemical polishing Chemical polishing is to make the surface of the material in the chemical medium micro convex part of the concave part of the preferential dissolution, A smooth surface is thus obtained. The main advantage of this method is that it does not require complex equipment and can polish workpieces with complex shapes, Many workpieces can be polished at the same time with high efficiency. The core problem of chemical polishing is the preparation of polishing solution. Surface roughness obtained by chemical polishing Generally, it is several 10 μm. 7. Magnetic grinding and polishing Magnetic grinding and polishing is the use of magnetic abrasive under the action of a magnetic field to form an abrasive brush to grind the workpiece. This method has high processing efficiency, Good quality, easy control of processing conditions, good working conditions. With suitable abrasives, the surface roughness can reach Ra0.1 μm. The polishing in plastic mold processing is very different from the surface polishing required in other industries, Strictly speaking, the polishing of the mold should be called mirror processing. It not only has the very high request to the polishing itself but also to the surface flatness, There are also high standards for smoothness and geometric accuracy. Surface polishing is generally only required to obtain a bright surface. The standard of mirror processing is divided into four levels: AO = Ra0.008μm, A1 = Ra0.016μm, A3 = Ra0.032μm, A4 = Ra0.063 μm, due to electrolytic polishing, fluid polishing and other methods are difficult to accurately control the geometric accuracy of the part, The surface quality of chemical polishing, ultrasonic polishing, magnetic grinding polishing and other methods can not meet the requirements, so the mirror processing of precision molds Or mainly mechanical polishing.

2022-11-28

28

2022-11

Floor grinding machine performance evaluation standards

With the purchase of floor grinding machine more and more customers, to introduce the performance of floor grinding machine. Floor grinding machine performance includes: grinding width, grinding head operation mode, speed, grinding head unit pressure, water control, etc. The construction standard is divided into: flatness, clarity and gloss. 1. Floor grinding machine speed: Under normal circumstances, the higher the number of revolutions of the floor grinding machine, the higher the grinding force. However, too high a speed will reduce the grinding force between the abrasive and the ground. When the pressure of the grinding head is relatively low, it will reduce the stability of the machine operation and reduce the construction standard. 2. The unit pressure of the grinding head of the floor grinding machine: The grinding head pressure of the floor grinding machine depends on the weight of the machine. The greater the grinding head pressure, the higher the relative efficiency and leveling rate. Too soft ground construction, if the grinding head pressure, cutting force increases, this time the floor grinding machine can not run at a constant speed, will reduce the construction flatness. 3. Water control: Generally, grinding on the ground is divided into wet grinding and dry grinding, which mainly determines the ground. Water can play a role in lubrication, chip removal and cooling. With the change of grinding process, the amount of water should be given and controlled in time. Ground grinding temperature will also directly affect the grinding luminosity. 4, floor grinding machine grinding area: relatively speaking, the larger the grinding area of the machine, the higher the flatness of the construction ground, but it is also the increase of the grinding range, which reduces the leveling efficiency of the ground height difference. 5, floor grinding machine grinding head operation mode: floor grinding machine grinding head operation mode is more complex, the greater the grinding force, the higher the work efficiency, the ground finish will also improve.

2022-11-28

22

2022-11

Multi-pillar support high-quality pension

Multi-pillar support high-quality pension The report of the 20th National Congress of the Communist Party of China proposed that the social security system is the safety net of people's life and the stabilizer of social operation. It is necessary to improve the national overall planning system for basic old-age insurance and develop a multi-pillar old-age insurance system. To this end, it is necessary to make up for the shortcomings as soon as possible, consolidate the foundation for the sustainable development of pension insurance, and provide a more solid and reliable system guarantee for the realization of the general public's "old age and security. Since the 18th National Congress of the Communist Party of China, great achievements have been made in the construction of China's old-age insurance system. In terms of basic old-age insurance, in the past 10 years, the number of people participating in basic old-age insurance in China has increased from 0.788 billion to 1.03 billion, forming an old-age insurance system covering the largest number of people in the world. At the same time, pension benefits have also been significantly improved. In terms of system construction, a unified basic pension insurance for urban and rural residents has been formed, the provincial-level overall planning of pension insurance has been fully realized, and a central adjustment system for basic pension insurance funds has been established. The old-age insurance system, supplemented by enterprise annuity, with old-age insurance, commercial old-age insurance and individual old-age insurance as the third pillar, has been initially established. From the perspective of future development trends, my country's aging degree is still deepening. At the end of the "14th Five-Year Plan" period, my country will fully enter a moderately aging society, and cities that have entered a deeply aging society are also expanding. The pressure on the pension system is not small. At present, compared with the basic old-age insurance system, whether it is the enterprise annuity and occupational annuity system as the second pillar, or the commercial old-age insurance system and the personal savings old-age insurance system as the third pillar, the development is much slower, and has become an obvious short board in the whole old-age insurance system. In the second pillar, China's enterprise annuity system, although established earlier, but the progress is relatively slow. In terms of commercial pension insurance, although commercial pension insurance has developed rapidly in recent years, the overall participation rate is not high. And soon after the introduction of personal savings pension insurance, the public's recognition and popularity need to be improved. To further improve China's old-age insurance system, we must take more measures, while constantly consolidating the basic old-age insurance protection function, vigorously develop the enterprise annuity system and commercial old-age insurance system and personal savings old-age insurance system. On the one hand, it is important to encourage more qualified enterprises to set up enterprise annuity system and actively innovate enterprise annuity plans suitable for small and medium-sized enterprises, which is an important way to improve the participation rate of enterprise annuity and expand the coverage of enterprise annuity. On the other hand, we should speed up the development of commercial old-age insurance and encourage commercial insurance institutions to provide personalized and differentiated old-age insurance for individuals and families. We will continue to improve supporting measures and vigorously promote the development of personal pensions supported by government policies, voluntary participation by individuals and market-oriented operation. Increase financial support and mobilize the initiative and enthusiasm of individuals to participate in commercial old-age insurance and personal savings old-age insurance. In this way, my country's multi-pillar pension insurance system can be established as soon as possible, and the foundation for the sustainable and stable development of pension insurance will be more solid.

2022-11-22

22

2022-11

The construction site will no longer be dusty, and new equipment will be added for road maintenance.

It's not just polishing work. In fact, if we go to the construction site, we will find that a lot of work is hard and dirty. But at the same time, these dirty and tiring jobs are also essential to our modern life. We have no way not to do these jobs, but what we can do is to try to use some modern tools and equipment to reduce people's workload and improve people's working environment as much as possible. Polishing itself is in a very dirty environment, because if we want to polish on the wall or the ground, it will inevitably splash a lot of dust, so that the whole working environment is very bad. But we have also been trying to improve this harsh working environment, and Meichen's dust-free road grinder is one of them. Dust-free grinding machine can be said that we are designed for the reality of dusty grinding work environment. Since the emergence of the grinding machine, it can be said that our human workload has been reduced a lot, but even if we use the grinding machine, the working environment has not changed, to a certain extent, it can be said to be even worse. Because the grinding machine tends to make more dust splash. It comes with a high-power vacuum cleaner, so in the work, the dust has not spread, it has been sucked into the vacuum cleaner, so that the natural working environment will be improved. It can be said that dust-free polishing has brought us more health.

2022-11-22

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