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• 27

  JUL

  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.

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• 06

  APR

  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

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• 05

  APR

  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

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