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2021-07-27

What sand blasting technology is needed for jewelry processing!

When processing our products, more processes will be used to make satisfactory products. For example, our jewelry is the same, so the processing of jewelry needs sandblasting. What kind of craft! Let the silver jewelry factory tell us now! Sandblasting process is to conduct partial sandblasting on the surface of metal jewelry according to the design requirements, which makes the polished surface of metal jewelry form a clear contrast, and enhance the aesthetic feeling of jewelry line art. There are two kinds of sand blasting technology: one is dry sand and the other is water sand. 1. Main tools required for sand blasting: 1. Sandblasting machine; 2. Air compressor; 3. diamond (quartz sand); 4. protective tape or wax 2. Operation steps: 1. The polished jewelry parts that need not be sandblasted shall be sealed with protective wax or protective tape. When pasting protective tape or applying protective wax, the lines shall be flat and tidy. 2. Select the appropriate thickness of diamond as required and put it into the sand blasting machine. Then adjust the required air pressure. 3. hold the broken jewelry, put the parts needing sand blasting into the sandblasting machine, align with the sand outlet of the sandblasting machine, open the air pressure valve, and spray the emery on the metal jewelry with air pressure until the requirements are met. Sand blasting position must be complete and uniform to achieve the effect.
2021-04-06

What are the advantages of carbon fiber car ?

What are the advantages of carbon fiber car ? Four advantages of carbon fiber car 1. Lightweight: This is one of the fundamental advantages that carbon fiber data can be used in the car industry. The lighter body means that the power system of the car can play a greater role and the car can run faster and farther. The density of carbon fiber composite data is about 1.7g/cm3, only about 1/4 of steel. The weight of the vehicle can be reduced by about 35%, which not only greatly reduces the fuel consumption, but also is more environmental protection. 2. Durability: what is durability? It is clear that the service life is the length of the application. The overall chemical function of the carbon fiber composite data is stable, and the corrosion resistance, oxidation resistance, impact resistance and fatigue resistance are excellent, the more 2-3 times the steel. The resin composition in the carbon fiber composite data is often the short board location of the function. If the thermoplastic resin can be used to blend with the connected carbon fiber, it will be better used in the car industry. 3. Safety: another feature of carbon fiber data is high modulus of strength, which means that carbon fiber can accept more load than steel, and can face faster speed up during internal driving. Through the test, it can be found that the tensile strength of carbon fiber composite data is about 3000mpa, which is 5 times of steel. If facing impact, it can better buffer pressure and improve the living space of passengers in disguise. Other carbon fiber data through specia
2021-04-05

Development of carbon fiber composites for automobile

Development of carbon fiber composites for automobile Car lightweight is the core skill and important development direction of the car industry, which has become the development strategy of the national manufacturing industry. In "made in China 2025", car lightweight is mentioned many times, involving many aspects, such as lightweight information, optimization planning, vehicle lightweight skills and so on. In "energy saving and new energy car lightweight skills roadmap", car lightweight is also the strategic focus one of. Many ministries and commissions have also issued a number of skills standards, laws and regulations and R & D projects benefiting the car lightweight industry. The government's support provides opportunities for the development of car lightweight industry, which is conducive to the improvement of the core competitiveness of China's car lightweight industry. Car carbon fiber reinforced resin matrix composites (CFRP) has a series of advantages such as light weight, high strength, high fracture toughness, corrosion resistance, strong planning ability, easy forming, good damping function and so on. It can not only meet the planning requirements of component stiffness, strength and lightweight, but also has obvious advantages in vehicle safety. Now, CFRP has become the most popular and potential lightweight material in car industry after high strength steel, aluminum alloy, magnesium alloy, engineering plastics and glass fiber composite material (GFRP). The tensile strength and tensile modulus of CFRP are affected by many factors, such as fiber type, dosage, morphology, lamination method and resin. The functional comparison between carbon fiber and other lightweight materials is shown in Table 1. Generally speaking, the tensile strength a
2021-03-31

What are the steps of resin vacuum for carbon fiber auto parts

What are the steps of resin vacuum for carbon fiber auto parts In fact, there is not much difference between the requirements of vacuum and hand lay up mold for most of the FRP shell formed by vacuum bag. However, the flange of the vacuum mold is relatively larger (such as 15cm), which is to facilitate the butyl tape to bond and seal the vacuum bag. Vacuum operation steps The first step: clean the surface of the FRP mold and apply the release agent; first, glue the sealing tape to the flange edge of the mold, so as to consider: 1. The flange edge of the mold is large enough, and the subsequent operation will not hinder. 2. Avoid scattered carbon fiber debris, which may cause air leakage when sealing at flange edge. Step 2: cutting carbon fiber cloth Carbon fiber cloth should not be cut too small, and the rough edges that need to be cut in the later period should be fully considered. You can also cut the carbon fiber cloth in advance. If the calculation is not good, you can cut one first, try to lay it, and then cut it according to the size. Carbon fiber cloth cutting step 3: laying carbon fiber cloth As for the laying of multi-layer carbon fiber cloth, you can use the setting spray glue, which is easy to bond and lay to the mold surface. Don't spray too much, because it shows the potential risk of poor combination. Step 4: lay release cloth The demoulding cloth will not stick to the product. After the part is solidified, it can be easily torn off, and the woven texture imprint similar to cloth pattern is formed on the back of the product. Lay the release cloth step 5: lay the guide net The primary function of the guide net is to promote the activity of the resin and disperse the epoxy resin quickly and eff
2021-03-26

Key to the use of carbon fiber bumper

Key to the use of carbon fiber bumper The traditional carbon fiber car accessories bumper is usually made of steel materials. However, with the increase of fuel price and the limitation of exhaust emissions, the light weight development direction of car manufacturing also puts forward new requirements for the raw materials of bumper. The carbon fiber composite data can be used instead of traditional metal data, which can reduce the weight of the car body, save fuel and reduce the exhaust emissions. This is not only the consensus of the industry, but also the result of the deepening of the use. The use of carbon fiber car accessories is various: from the interior panel, body cover, engine cover, door, frame, bumper, spoiler, transmission shaft, brake friction pad, seat, hub, fuel storage tank, etc., the carbon fiber composite data is no longer rare. When the car is bumping at high speed, the bumper beam and energy absorbing bracket are the primary parts to play an important role. So, how to use carbon fiber composite data instead of steel data to make car bumper parts? What are the key points to master in use? Carbon fiber car accessories - bumper beams are not thicker as possible: Theoretically, the energy absorbed by bumper system is proportional to the thickness of carbon fiber composite data. The thicker the data, the more energy absorption. With the increase of thickness, the maximum deformation of bumper beam will decrease and the reduction will be smaller and smaller. But the test results show that the acceleration value of the pendulum increases with the increase of thic
2021-03-19

The application obstacles and trends of carbon fiber car parts

The application obstacles and trends of carbon fiber car parts With the development of domestic carbon fiber technology, the application of carbon fiber composite materials is more and more extensive, especially in the car category. Carbon fiber composite data meet the needs of lightweight development of cars, and the advantages of carbon fiber composite data in the parts of cars have been gradually paid attention to. At present, carbon fiber composite data is mainly used in cars as parts, such as drive shaft, battery box and brake pad. The research of carbon fiber data in China began in 1960s, and has been nearly 50 years ago. However, the progress of the research is slow. Because of the technology closed by developed countries, China has not yet completed the large-scale production of carbon fiber data, so the use of carbon fiber in China is mainly dependent on import. Therefore, in order to complete the extensive application of carbon fiber data in the future in China's car parts, the following problems need to be solved: First, the cost of carbon fiber data. The high cost of carbon fiber data is the biggest obstacle to its wide application in car parts; Second, the lack of production methods. Now, it seems that China lacks the production methods of large quantity and high efficiency carbon fiber materials for car parts; The third is the recovery and utilization of carbon fiber materials for car parts. At present, the recovery of carbon fiber reinforced thermosetting resin matrix composite materials is not enough, and it is very urgent to be treated; Finally, at present, there is no relevant planning data, experimental methods, analysis tools, bump model and so on, which need further research and improvement. According to the vi
2021-03-16

Hidden properties of carbon fiber

Hidden properties of carbon fiber Carbon fiber has excellent performance and is favored in many fields. When it comes to carbon fiber, it's natural to think of such performance parameters as specific strength, specific modulus and low density. In fact, in addition to these, carbon fiber has some hidden properties. This article will discuss a hidden property of carbon fiber discrete coefficient. The hidden property of carbon fiber -- dispersion coefficient What is the dispersion coefficient of carbon fiber? The performance span of carbon fiber is very large, from T300 to t1200, light intensity can be divided into many different grades. This is related to the stability of carbon fiber performance, and the dispersion coefficient is a hidden attribute of the stability of carbon fiber. Practitioners will use CV value to express the dispersion coefficient, which is usually not involved in custom-made carbon fiber products. Only carbon fiber precursor manufacturers and carbon fiber products processing manufacturers have a deep understanding of this property. The larger the dispersion coefficient of carbon fiber is, the more unstable the quality of carbon fiber is. The dispersion coefficient, also known as the coefficient of variation, represents the deviation degree of two groups of data. There are two sets of data, one is the target data, the other is the actual data. If the deviation between the two is large, the larger the dispersion coefficient is, and the closer the two are, the smaller the dispersion coefficient is. Effect of dispersion coefficient of carbon fiber Carbon fiber composites are designable. According to the actual needs of customers, t

Industry Information

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