At present, the environmental protection industry in our country is still in the critical period of carrying forward the weight, which is not only the window period, the turning point but also the crucial period for achieving the overall improvement of the environmental quality. It is an arduous task to improve the quality of the environment, and accelerating the shortage of ecological civilization is facing enormous challenges. It is undeniable that at present in some areas the shortcomings of China's environmental technology is difficult to avoid. After many years of development, our country should make great strides in conventional pollution control technologies. In the future, environmental protection technology-based enterprises will usher in better development opportunities. As an important platform for pollution control, an important pillar of economic growth and an important area for scientific and technological innovation, the environmental protection industry is embracing new opportunities for development. With the continuous introduction of relevant industrial policies in recent years, this shows the determination of the state to fight pollution and promote the construction of ecological civilization. At present, China has started to enter the downward phase of the long-term GDP growth rate center. With reference to international experience, the environmental protection industry will usher in a period of rapid growth. Whether in terms of industrial development or investment, the environmental protection industry is one of the key industries that need attention. However, there are still some obvious shortcomings in China's environmental protection technologies. According to the survey conducted by the Industry Research Institute of Forward Looking, some of the equipment used in the field of environmental analysis, monitoring and inspection are still mainly imported. In particular, the core zero of some environmental protection equipment Components, very few domestic products and imported products to form a more powerful competition. Beijing, Tianjin and the region into environmental protection technology to use Beijing, Tianjin and Hebei are the regions with the most concentrated innovation resources and the most fruitful scientific and technological innovations in our country. As an important aspect of Beijing-Tianjin-Hebei integration, environmental governance will become a major focus of Beijing, Tianjin and Hebei in 2017. Beijing, Tianjin and Hebei science and technology sector together, and strive to 2018, in the atmosphere, water, soil, solid waste, energy efficient, new energy and other fields, research and development to promote a number of key technologies to form a group to meet the industrial upgrading of energy-saving environmental protection comprehensive solution Program to promote the comprehensive utilization of energy efficiency. Compared with the complexity of environmental issues and the arduous task of environmental protection in our country, environmental science and technology face the problems of lack of innovation capability, inadequate supportive environment management, and imperfect systems. Future in these areas, but also need to constantly improve and strengthen. Certainly, during the "13th Five-Year Plan" period, China's environmental technology and industrial markets will usher in an accelerated period of development. When reaming stainless steel, the problems that are often encountered are: grooves are easy to be drawn on the surface of the hole, the roughness is poor, the aperture is out of tolerance, it is bell mouth, and the reamer is easy to wear. Different types of stainless steel have different machinability, and the problems in reaming are also different. For example, when reaming austenitic stainless steel such as 1Cr18Ni9Ti and stainless steel resistant to concentrated nitric acid, the main problem is reamer wear; while for 2Cr13, etc. When reaming martensitic stainless steel, the main problem is that it is not easy to ensure the roughness and dimensional accuracy of the reaming hole. To avoid these problems, the following should be noted: Stainless Steel Reaming Parts,Stainless Steel Reaming Service,Lathe Machining Part,Cnc Lathe Machining Pro Success Development Limited , https://www.prosuccess-metal.com
1. Reasonable selection of reamer and reaming amount is the key to ensure the smooth progress of reaming.
2. Improve the quality of the pre-processing process and prevent the occurrence of grooves, ellipses, polygons, tapers or bell mouths, waist drum shapes, axis line bending, deflection and other phenomena in the pre-processing holes.
3. Keep the hardness of the workpiece material moderate, especially for 2Cr13 martensitic stainless steel, the hardness after quenching and tempering treatment is preferably below HRC28.
4. To install the reamer and the workpiece correctly, the reamer must be installed correctly, and the axis of the reamer should be consistent with the axis of the pre-machined hole of the workpiece to ensure uniform cutting of each cutter tooth.
5. Selecting a suitable cutting fluid can solve the chip adhesion problem of stainless steel and make it smooth chip removal, thereby reducing the surface roughness of the hole and improving the durability of the tool. Generally, it is advisable to use vulcanized oil. Adding 10% to 20% CCl4 to vulcanized oil or adding 20% to 30% CCl4 to lard will have a significant effect on reducing surface roughness. Since CCl4 is harmful to the human body, it is advisable to use a mixture of 85% to 90% vulcanized oil and 10% to 15% kerosene. When the diameter of the reamer is large, internal cooling can be used.
6. Carefully pay attention to the reaming process and strictly check the runout of the cutter teeth, which is the key to obtain uniform reaming. During the reaming process, pay attention to the shape of the chips. Due to the small reaming allowance, the chips are in the form of foil rolls or very short spiral coils. If the chips are of different sizes, some are in the form of fine powder, and some are in the form of small blocks, it means that the reaming is uneven. If the chip is in the shape of a strip of spring, it means that the reaming allowance is too large. If the chip is needle-like or fragment-like, it means that the reamer has been blunted. To prevent chips from clogging, you should be diligent in observing whether there are sticky chips on the cutter teeth to avoid excessive hole diameter. When reaming a hole with a carbide reamer, hole shrinkage will occur. In order to prevent the hole from being roughened when the tool is retracted, the situation can be improved by increasing the lead angle.
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