Aboard hammer and liner plate of impact crusher are easy to wear, which need routine maintenance. At present, the aboard hammer and liner plate in our country mainly made from high manganese steel. For the difference of heat treating materials, its service life is different. Our country also developed a kind of impact hammer made from Low alloy white cast iron or high chromium iron, which has the features of high hardness, good abrasive resistance, simple production, low investment, and has achieve a good effect.
In order to meet the development needs of large quantities of mineral processing trends, crusher, mill product will inevitably need to have a greater degree of improvement in production and processing capacity. That will lead to the crusher, mill production enterprises accelerating technology research and development to introduce more types of efficient powder grinding equipment.
According to different requirements, we need to select different types of mill to achieve the purpose of energy saving and high production. Some series of non-metallic ore mill is applicable to the processing needs of the graphite of different particle size of different industrial applications. There are raymond mill, high pressure medium speed mill, tricyclic micro powder mill, etc. And some types is specializing in powder production, such as high-pressure micro powder mill, ultrafine mill.
With the development of china's economic reform, and the awareness of global environmental protection, environmental pollution caused by production and processing of mineral resources gradually against humanity. Therefore, people began to look for more efficient and environmental friendly equipment. Thus can ensure the production as well as more environmental friendly, which is not only an incentive but also challenge for mining machinery. It also promotes the continuous improvement in the skills of the crusher and mill, and guides the mining machinery develops in a benign way. After many years of practice and continuous improvement, the raymond mill is becoming better and better in structure. It has many features with high efficiency, low power consumption, small floor space, less capital investment and less environment pollution.
In the carbon steel aboard hammer, some manufacturer use “up weld 64” and “up weld 64A” welding rod to surfacing a layer, or use High-manganese steel electrode to surfacing in the High-manganese steel electrode, these methods can reduce wear, and repair old aboard hammer or impact plate. The shape and fix methods of aboard hammer is important to maintenance. The shape of aboard hammer should be convenient to dismounting, and improve the metal utilization ratio. The weight of aboard hammer should be exact, and its error should not be exceeding 0.5kg that to make sure the stable of machine. During Rotor static balance test, rotor should not rotate 1/10 circle when it stop in any point.
Therefore, this new type of raymond mill is widely used in metallurgy, building materials, chemicals, mining minerals for grinding materials processing. Graphite materials and their composites as new materials of the 21st century, there no doubt will have a great development. And graphite has been applied in many fields, corresponding to some of the emerging high-tech industry. The mill industry is willing to provide a more superior product for the rapid development of the graphite.
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