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Analysis of Common Malfunctions in Concrete Finishers and Summary of Troubleshooting Solutions

08

2022-11

Analysis of Common Malfunctions in Concrete Finishers and Summary of Troubleshooting Solutions

1. The screeding machine emits black smoke during operation. Check if the screeding machine has been over-oiled—if there’s excess oil, drain some off. Alternatively, severe piston wear could also cause oil burning; in such cases, the piston should be replaced promptly. Additionally, inspect the engine—if it’s functioning properly, the issue might stem from excessive oil contamination. Remember, using high-quality机油 is crucial—always opt for premium lubricants and ensure you’re purchasing genuine products to avoid low-quality or counterfeit oils. 2. How to adjust the screeding machine’s chassis screws for leveling: Start by replacing all four new blades, then place the screeding machine on a perfectly flat surface. Next, remove the rocker arm and visually check whether the four screws are at the same height. If necessary, use a ruler to measure their heights carefully. If the screws aren’t evenly aligned, adjust them until they’re level. Finally, gently wiggle the pressure cap; if there’s no wobbling, the adjustment is successful. To prevent wear, apply a small amount of grease to the top of each screw. 3. The screeding machine keeps stalling unexpectedly. First, verify that the oil level is normal and not too low. Some machines come equipped with an automatic oil protection system that shuts down the engine when oil levels drop critically. If the remote stop switch is causing the issue, disconnect it one by one and test the machine. If the stalling stops after removing a specific switch, it indicates a grounding problem in that component. Thoroughly inspect and address the issue to resolve the problem. 4. The screeding machine’s engine runs fine, but it can’t drive the screed plate effectively. If the engine itself is working correctly, the problem likely lies with either an incorrect belt type or a belt that’s too long. If the issue persists, consider replacing the clutch assembly—it’s usually an easy fix. 5. The gasoline-powered screeding machine has been submerged in water. Begin by cleaning the carburetor thoroughly. Then, remove the spark plug to check if water has entered the cylinder head. If water is present, crank the machine several times to expel the water completely. After changing the机油, restart the machine to see if it operates normally again. 6. The screeding machine won’t turn. Possible causes include: deformed vanes, damaged motor bearings, improper mounting of the motor bracket, or operational errors.

2022-11-08

07

2022-11

Hand in Hand and Win-Win Cooperation -- Observation of China's Series of Diplomatic Activities in Golden Autumn

Hand in Hand and Win-Win Cooperation -- Observation of China's Series of Diplomatic Activities in Golden Autumn Shortly after the successful conclusion of the Party's 20th National Congress, dignitaries from many countries visited China one after another, and the Fifth China International Import Expo and the 14th Conference of the Parties to the Convention on Wetlands were held as scheduled ...... In the golden autumn, a series of important diplomatic activities in China attracted the attention of the world. At present, the world has not changed in a century to accelerate the evolution. Under the guidance of the head of state diplomacy, China in the new era has the world in mind, stands up for its own talents, deepens exchanges with all parties, and advances hand in hand. The diplomacy of major powers with Chinese characteristics has shown a new atmosphere on the new journey. (Subtitle) New Journey, New Starting Point, Diplomacy Opens a New Bureau Within a week from October 30 to November 4, the leaders of Vietnam, Pakistan, Tanzania and Germany visited Beijing successively. Welcome ceremony, meetings and talks, witness the signing of cooperation documents ...... A series of foreign affairs activities were carried out intensively. This round of visits has created many "firsts"-Nguyen Phu Trong, General Secretary of the Central Committee of the Communist Party of Vietnam, chose China for his first visit after the 13th National Congress of the Communist Party of Vietnam; Pakistani Prime Minister Shabaz, Tanzanian President Hassan, and German Chancellor Scholz are all After taking office, he visited China for the first time. Su Xiaohui, an associate researcher at the China Institute of International Studies, said that after the victory of the 20th National Congress of the Communist Party of China, leaders of many countries visited China intensively, reflecting the close attention of the international community to China's development and reflecting the general desire of all countries to deepen exchanges and interaction with China. During the meeting and talks, General Secretary Xi Jinping introduced the twenty major situations to the guests, expounded the significance of Chinese-style modernization, and conveyed a clear message that China continues to actively promote the construction of a community with a shared future for mankind: "The path of socialism with Chinese characteristics is in line with China's reality and reflects the Chinese people. Will, adapt to the development requirements of the times" "China will continue to adhere to the basic national policy of opening up" "" Chinese modernization has the common characteristics of modernization, there are also Chinese characteristics based on its own national conditions. "China has always maintained and promoted world peace with its own development, and China's development and world development are mutually integrated and mutually successful"...... Foreign leaders expressed their gratitude to General Secretary Xi Jinping for his introduction. Nguyen Phu Trong said that under the leadership of the CPC Central Committee with Comrade Xi Jinping at the core, China will certainly achieve the goals and tasks set by the 20th CPC National Congress and make new positive contributions to the region and the world. Shabaz said that he believes that President Xi Jinping's foresight will not only continue to lead China to create more brilliant achievements, but also lead the world to a brighter future. Hassan said, the Tanzanian side regards China as its true and most important friend and is willing to be a partner worthy of China's trust forever. Scholz said that China plays an important role in many global issues, and Germany hopes to maintain communication and coordination with China to better safeguard regional and world peace and security...... Sincere and friendly exchanges have reaped heavy fruits. China and Vietnam issued the "Joint Statement on Further Strengthening and Deepening the China-Vietnam Comprehensive Strategic Cooperative Partnership"; China and Pakistan reached broad consensus on the high-quality joint construction of the "Belt and Road", the implementation of the Global Development Initiative and the Global Security Initiative, etc.; China and Tanzania upgraded bilateral relations To a comprehensive strategic cooperative partnership; China and Germany conduct in-depth communication on bilateral relations and important issues of common concern...... "The 20th CPC National Congress clearly proposed to comprehensively promote the great rejuvenation of the Chinese nation with Chinese-style modernization. Chinese-style modernization is a modernization that follows the path of peaceful development, and China will work hand in hand with all countries in the world for win-win cooperation." Li Wei, director of the Center for Economic and Diplomatic Studies at Renmin University of China, said. (subheading) Deepening diplomatic layout and expanding partnerships Among the countries visited in this round are Vietnam, a socialist country with "comrades and brothers", Pakistan, a neighboring country with "good friends, good partners and good brothers", Tanzania, a developing country from Africa, and Germany, a western developed country from Europe. "China's practice of insisting on making friends and constantly expanding the'circle of friends' has not changed; in the context of the complex and changeable international situation, the general direction of China's deepening cooperation with other countries and achieving win-win results has not changed." Su Xiaohui said. The report of the 20th National Congress of the Communist Party of China pointed out that China adheres to the development of friendly cooperation with other countries on the basis of the five principles of peaceful coexistence, promotes the construction of a new type of international relations, deepens and expands the global partnership of equality, openness and cooperation, and is committed to expanding the convergence of interests with other countries. Promote coordination and positive interaction among major countries, promote the construction of a pattern of major-country relations featuring peaceful coexistence, overall stability and balanced development; adhere to the diplomatic policy of friendship, sincerity and tolerance, friendship and partnership with neighboring countries, deepen friendship, mutual trust and integration of interests with neighboring countries; uphold the concept of true friendship and sincerity and the correct concept of justice and interests, strengthen solidarity and cooperation with developing countries, and safeguard the common interests of developing countries ...... China's all-round, multi-dimensional diplomatic layout is constantly improving. From the meeting with Nguyen Phu Trong, the two sides agreed to "consolidate traditional friendship, strengthen strategic communication, enhance political mutual trust, and properly manage differences", to the meeting with Shabaz, he pointed out that "China's new development will continue to provide new opportunities for countries in the world, including Pakistan"; From the meeting with Hassan, it was pointed out that "developing China-Tanzania relations is not only in the common and long-term interests of the two countries, it is also of great significance to promote the construction of a new era of China-Africa community of destiny", to meet with Scholz stressed that China and Germany "in the changing and chaotic situation should work together to make more contributions to world peace and development" ...... General Secretary Xi Jinping put forward a series of important propositions to steer the development of China's relations with all parties. This series of diplomatic activities in the golden autumn, in the intensive bilateral exchanges, contains considerations for promoting the overall development of relations between China and relevant regions. Guo Yanjun, director of the Institute of Asian Studies of the Foreign Affairs University, said that Vietnam and Pakistan are China's important neighbors in Southeast Asia and South Asia respectively, and Vietnam is an important country in ASEAN. The bilateral interaction not only plans the prospects for the development of China-Vietnam and China-Pakistan relations, but also promotes China. The development of relations with these two regions has injected strong impetus into building a community with a shared future around them. During his visit to Tanzania in 2013, President Xi Jinping proposed that China's cooperation with African countries needs to uphold the concept of true friendship and sincerity. Now this has become the basic policy concept guiding China's unity and cooperation with developing countries. Su Xiaohui believes that this high-level exchange between China and Tanzania is another vivid interpretation of the concept of true friendship and sincerity, which fully reflects China's importance and respect for African countries, and demonstrates China's sincerity in strengthening unity and cooperation with developing countries. Su Xiaohui said that the development of Sino-German relations will play a positive role in promoting the stable development of China-EU relations. The German Chancellor took the lead in visiting China among the leaders of European countries, and the direct face-to-face communication and dialogue between Chinese and German leaders not only effectively responded to the fallacy of "decoupling", but also set a model for the benign interaction between other European countries and China. (Subtitle) Adhering to Open Cooperation and Sharing Development Opportunities China and the visiting countries concerned have reached a broad consensus on practical cooperation in a number of fields; the Expo has been held in Shanghai for the fifth consecutive year; the 14th Conference of the Parties to the Convention on Wetlands has been held in Wuhan and Geneva ...... Through China's series of diplomatic activities in the golden autumn, the world has seen a China that adheres to the basic national policy of opening up to the outside world and firmly pursues a mutually beneficial and win-win opening strategy, we have seen a China that continues to provide new opportunities for the world with China's new development. During his visit to China, Nguyen Phu Trong said that he would promote the further docking of the "two corridors and one circle" and the "Belt and Road Initiative" initiative, further promote the effectiveness of economic cooperation between the two countries, and create new highlights in various fields. Shabaz said, "deepen cooperation with China in various fields, so as to better achieve their own development" and "is willing to work with China to continuously promote the high-quality joint construction of 'Belt and Road, the Global Development Initiative is conducive to solving the current global challenges and is willing to work with China to actively implement it. During Scholz's visit to China, more than 100 German companies submitted follow-up applications, and 12 companies were finally shortlisted...... "Obviously, both political leaders and business people have a clear understanding of the importance of cooperation with China." Guo Yanjun said. The CIIE has become a window for China to build a new development pattern, a platform to promote high-level openness, and an international public product shared globally. "Sharing opportunities in China's big market", "sharing opportunities for institutional opening up" and "sharing opportunities for deepening international cooperation", President Xi Jinping's speech at the opening ceremony of the Fifth CIIE sent a clear signal to create an open, prosperous and bright future together. Former Slovenian President Turk said that China's commitment to opening up to the outside world is very important. In the complex and changeable international situation, the openness of China's economy is of global significance; Solomon Islands Prime Minister Sogavare said that the CIIE will share China's huge market brings historic opportunities for the world; International Monetary Fund Managing Director Georgieva said that to solve the current world development problems, more platforms such as the CIIE are needed...... The holding of the 14th Conference of the parties to the Convention on Wetlands shows that Chinese-style modernization, as a modernization of harmonious coexistence between man and nature, is providing more and more Chinese solutions and contributions for countries to explore the road of benign interaction between man and nature. "To unite the global consensus of cherishing wetlands", "to promote the global process of wetland protection" and "to enhance the global well-being of wetlands for the benefit of the people", President Xi Jinping put forward China's proposal on jointly promoting the global action of wetland protection in his opening speech. Li Wei said that China's development cannot be separated from the world, and the world's development also needs China. A series of recent important foreign affairs activities have demonstrated to the world China's determination and confidence in continuing to open up to the outside world and win-win cooperation with the world, and demonstrated China's mind and responsibility to create more opportunities for the world with its own development. will inject more certainty into global development. Only by embracing the world can we embrace tomorrow. Only by working together can we achieve stability and prosperity. China, embarking on a new journey, will continue to hold high the banner of peace, development, cooperation and win-win results, open its arms to the world and work with other countries to create a better future for mankind. (END)

2022-11-07

07

2022-11

What are the uses of the US Tengqi milling machine

The milling machine is used for waterproofing the bridge deck surface, dealing with chiseling wool, surface flatness and waterproofing of high-speed railway box girders, removing ground coating paint, various traffic markings, renovation of dirt accumulation, removal of old floor surfaces, etc. One of the main types of asphalt pavement maintenance and construction machinery, one of the main equipment for asphalt concrete pavement maintenance and construction, can also be used to excavate pavement pits and trenches, as well as to roughen cement roads and mill the wrong table of the surface layer. Small pavement milling machine is mainly used for road and bridge pavement asphalt or workshop before the old concrete floor re-paving concrete, remove cement laitance and leveling nap, but also used to remove the hard ash left in the construction. 1. Clear the cold paint for marking. 2. The marking hot insulation paint shall be removed. 3. Removal of elastic floor paint. The milling machine is used for waterproofing the bridge deck surface, dealing with chiseling wool, surface flatness and waterproofing of high-speed railway box girders, removing ground coating paint, various traffic markings, renovation of dirt accumulation, removal of old floor surfaces, etc. One of the main types of asphalt pavement maintenance and construction machinery, one of the main equipment for asphalt concrete pavement maintenance and construction, can also be used to excavate pavement pits and trenches, as well as to roughen cement roads and mill the wrong table of the surface layer.

2022-11-07

07

2022-11

Contrast curing agent floor and cement floor different

Ground curing agent refers to the ground after the use of cement on the ground curing agent. It can be seen that the performance of the curing agent floor is significantly better than that of the ordinary cement floor. So what is the difference between curing agent ground and ordinary cement ground? 1, with a certain decorative performance. The cement floor after the construction of cement floor curing agent after grinding machine grinding can show a high gloss effect, and in the back of the use of the process, each friction is equivalent to grinding, curing agent floor highlights will be more and more bright. 2. Better physical properties. Cement ground curing agent can seal and solidify the pores inside and on the surface of the cement ground, so that it supports a dense whole, so that the floor in the hardness, strength, wear resistance, compressive ability and other properties have been greatly improved, do not have to worry about the ground is easy to dust from the sand. 3, easy to clean. Ordinary cement floor does not have a good sealing, if the ground is contaminated with oil, dirt, then these oil and other substances will easily penetrate into the interior of the floor, the formation of stains on the floor surface, it is difficult to clean up, affecting the overall perception of the floor. After the cement floor curing agent is constructed for the cement floor, the cement floor becomes a whole, and the impermeability is improved. Oil will not easily enter the cement floor. After the curing agent is contaminated with oil, timely treatment can leave almost no stain marks on the ground surface. 4. Long service life. Curing agent floor because of the hardness, strength, wear resistance, can withstand higher frequency and greater weight of vehicles, equipment, goods rolling and will not easily dust from sand, cracking, so the service life compared to ordinary cement floor is a great improvement. Under normal circumstances, the service life of the curing agent floor can reach more than 30 years. Although the performance of cement ground is mediocre, but with cement ground curing agent, it is the top type of the ground. The performance of the curing agent floor makes it popular and widely used in factory workshops, underground garages, logistics warehouses, open squares and other places.

2022-11-07

07

2022-11

How to use floor grinding machine to do a good job in the floor paint before construction

To ensure and improve the adhesion of the floor paint coating: the treated concrete base surface can make the floor paint primer more penetrate into the concrete surface, which plays a key role in the service life of the whole floor paint coating. Especially when there is oil and water on the base surface, it is difficult to form a continuous coating due to the poor compatibility of oil and water with the coating. Even if a complete coating is formed, the coating adhesion will be greatly reduced, causing the coating to fall off prematurely. When the surface of the dust is not directly through the base surface care construction, the light causes the floor paint coating to produce pitting, heavy may lead to a large area of floor paint coating off, shorten the service life of floor paint. Therefore, at the same time to establish a smooth, smooth, beautiful coating to make the necessary preparations for the entire floor paint project to create a good foundation. Create the right surface roughness: floor paint coating attached to the concrete surface is mainly rely on the polar molecules in the floor paint and the mutual attraction between the surface molecules of the substrate. Concrete after floor grinding machine grinding treatment, will make the surface rough, with the increase of roughness, surface area increased significantly, the unit area of the coating and the base surface of the gravity also doubled, but also for the floor paint coating attachment provides a suitable surface shape, increase the mechanical tooth cooperation, the epoxy floor paint coating attachment is very favorable.

2022-11-07

04

2022-11

Hot Comments: Rules and Red Lines for the Protection of the Yellow River

Hot Comments: Rules and Red Lines for the Protection of the Yellow River "The Yellow River is peaceful, and the world is peaceful." On October 30, the 37th meeting of the Standing Committee of the 13th National People's Congress voted to pass the "the People's Republic of China Yellow River Protection Law", which will come into effect on April 1, 2023. Following the Yangtze River Protection Law, China's river basin protection has added landmark legislation, which provides a strong guarantee for promoting ecological protection and high-quality development of the Yellow River Basin on the track of the rule of law. "The 'wide riverbed' at the mouth of the sea, now there are only thin and weak streams..." This is a thought-provoking text written by the media when they conducted an interview and report on "Walking the Yellow River" in 1999. From 1972 to 1999, the main stream of the lower Yellow River was cut off for 22 years in 28 years. At its worst, the length from the mouth of the sea is 704 kilometers. The river ecosystem was on the verge of collapse, the wetland area shrank, and the production and life of the people were affected. The protection and governance of the Yellow River is a major event in governing the country, and it is also a major plan related to the great rejuvenation and sustainable development of the Chinese nation. Worry about the disease of the Yellow River and focus on the treatment of the Yellow River. Qinghai Sanjiang source to protect the "China Water Tower", Gansu to promote the integration of mountains, rivers, forests, fields, lakes, grass and sand protection and restoration projects, Ningxia to build the Yellow River basin ecological protection and high-quality development of the pioneering area, Shandong to protect the Yellow River estuary wetland ecological environment ...... Since the 18th CPC National Congress, we have raised the Yellow River basin ecological protection and high-quality development as a national strategy, building the Yellow River protection and management "four beams and eight pillars", remarkable results have been achieved in the control of water and sediment in the Yellow River Basin, the ecological environment has continued to improve significantly, and the level of development has been continuously improved. More than 20 years later, people walking the Yellow River will find that the most beautiful thing in the Yellow River is ecology, and the most confident thing is to solve high-quality development along the river. In view of the difficult and painful points that have plagued the Yellow River Anlan for a long time, the Yellow River Protection Law has not only a systematic concept of overall planning, but also targeted measures for precise policy implementation. For example, according to the different requirements of different regions, targeted provisions are made to maintain the natural state of rivers and lakes, ecological restoration projects, sand prevention and control, soil erosion prevention and control, comprehensive management of small watersheds, whole ditch management, warping dam construction, ecological water replenishment and other institutional measures; for example, in order to break the situation of "Jiulong water control", it is clear that the state should establish an overall coordination mechanism for ecological protection and high-quality development of the Yellow River Basin, proposed the establishment of the Yellow River Basin inter-provincial river and lake chief joint meeting system, and so on. Only by strengthening the systematicness, integrity, coordination and timeliness of the legal system for the protection of the Yellow River, adhering to a game of chess in the whole basin, and setting rules and drawing red lines for "what to protect" and "what to develop" in the Yellow River Basin, can we better promote green development and promote the harmonious coexistence of man and nature. The river rushes, nine songs in a chain. The formulation and promulgation of the Yellow River Protection Law is a new milestone in the protection and management of the Yellow River. Whether the legal system can improve the governance efficiency and development potential depends on strong implementation. Taking the Yellow River Protection Law as an opportunity, we will jointly do a good job in the protection of the Yellow River, coordinate the promotion of the great governance, draw a blueprint to the end, one crop after another, and run one stick after another. We will definitely make the Mother River a happy river that benefits the people.

2022-11-04

04

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.

2022-11-04

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