Equipment manufacturing industry plays a decisive role in promoting the development of all walks of life in the national economy. Five major strategies will be experienced in the development of China's equipment manufacturing industry. First, the main attack on high-end strategy. We must focus on high-tech products, speed up the development of high-end machinery products that are currently heavily dependent on imports, and turn the previous "can't eat" demand into a "12th five-year" growth space. We must commit ourselves to the upgrading of traditional products to quality products to solve the chronic problems of “doing bad†and “not doing a good job†of traditional products and improving the image of Chinese machinery products in the international and domestic markets.
Second, innovation drive strategy. The "Twelfth Five-Year Plan" machinery industry must shift from relying too much on energy, resources, and other factors to drive development and shift to relying more on scientific and technological innovation, institutional and institutional management innovation, and personnel quality improvement to drive development. To achieve "innovation-driven" not only needs to increase investment in product research and development, but also more important is to strengthen the industry's innovation system and strengthen the cultivation of innovative talents and innovation capabilities.
Third, strengthen the basic strategy. The "Twelfth Five-Year Plan" machinery industry must do everything possible to strengthen the common basic fields of basic parts, basic technologies, basic technologies and other machinery industries. On the issue of strengthening the foundation, we must break the division of the original industry. The host industry and the parts and components industry must give full play to their respective advantages and support and cooperate with each other, and make every effort to advance.
Fourth, the two integration strategy. According to experts of Huaxia Mould Network, "Integration of the two technologies" is not only to integrate information technology into mechanical products, to accelerate the development of digital products and intelligent products, to achieve the enhancement of the functions of traditional machinery products, and to improve the reliability; it is not only to include information. The technology is applied to the operation and management of machinery enterprises, to the development of information technology, automation, and networking in R&D, production, and enterprise management, and to greatly improve the company's management and management level; the depth of advancement of "integration of the two systems" lies in the promotion of new development concepts. The establishment of the company promotes innovation in research and development capabilities, product levels, market models, and service systems, and enhances the efficiency and effectiveness of R&D, design, manufacturing, enterprise management, and marketing services.
Fifth, the "green first" strategy. Huaxia Mould Network experts believe that energy-saving emission reduction and environmental friendliness are the basic requirements that must be taken seriously by the machinery industry itself during the “Twelfth Five-Year Plan†period. The machinery industry should actively develop high-efficiency and energy-saving products, vigorously develop new energy equipment, and provide advanced equipment for users of all walks of life to save energy, reduce consumption, and reduce emissions. At the same time, the design and manufacture of mechanical products must pay more attention to the green concept that embodies the whole life cycle. Factors such as “high efficiency, low pollution, recyclability, and reusable resources†must be given priority. To develop the remanufacturing of mechanical products, adhere to the new industrialization path of green manufacturing and circular economy.
Casting Polyurethane Prepolymer
Casting Polyurethane Prepolymer used for making wheels, Sieve, machinery parts, sealing ring, PU rollers and other elastomers.
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Casting polyurethane prepolymers involves a process where a liquid mixture of polyols and isocyanates is poured into a mold or container and allowed to cure or solidify. This process is commonly used in various industries such as automotive, construction, and manufacturing.
Here is a step-by-step guide on how to cast polyurethane prepolymers:
1. Prepare the mold: Clean the mold thoroughly and ensure it is free from any debris or contaminants. Apply a mold release agent to facilitate the easy removal of the cured polyurethane.
2. Measure and mix the components: Measure the desired amount of polyol and isocyanate components. The specific ratio will depend on the desired properties of the final product, which can be found in the product's technical data sheet. Pour the measured components into a clean mixing container.
3. Mix the components: Use a mechanical mixer or a high-speed drill with a mixing attachment to thoroughly mix the polyol and isocyanate components together. Make sure to mix for the recommended amount of time specified by the manufacturer to ensure complete homogeneity.
4. Degassing: After mixing, it is important to degas the mixture to remove any trapped air bubbles. This can be done by placing the mixture in a vacuum chamber and applying vacuum pressure for a specified period of time. Alternatively, a vacuum degassing unit can be used.
5. Pouring the mixture: Once the mixture is properly degassed, pour it into the prepared mold or container. Take care to avoid introducing any additional air bubbles during the pouring process.
6. Curing: Allow the poured mixture to cure at room temperature or, if necessary, in a temperature-controlled environment. The curing time will vary depending on the specific polyurethane prepolymer used and the desired hardness or flexibility of the final product. Follow the manufacturer's recommendations for curing time and temperature.
7. Demolding: After the polyurethane has fully cured, carefully remove it from the mold or container. Use caution to prevent any damage to the cured part.
8. Post-curing (optional): Depending on the specific polyurethane prepolymer used, post-curing may be required to optimize the material's properties. This can be done by subjecting the cured part to elevated temperatures for a specific period of time.
It is important to note that casting polyurethane prepolymers requires proper safety precautions, such as wearing appropriate personal protective equipment (PPE) and working in a well-ventilated area. Always follow the manufacturer's instructions and guidelines for handling and working with polyurethane prepolymers.
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