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At the annual meeting of the excavator branch in 2012, Tang Yongxiang, general manager of Cummins Industrial Markets, stated that Cummins has always been committed to cooperating with the OEM to create value together as a professional power. China's main engine plant has been continuously exploring the international market. The results have been extraordinary. China's construction machinery products have occupied an important position in the international market. The cooperation between Cummins and the OEM will extend from cooperation with China to cooperation with the world.
Founded in 1919, Cummins Corporation is headquartered in Columbus, Indiana. Cummins is a world-leading power equipment manufacturer that designs, manufactures and distributes engines and related technologies including fuel systems, control systems, air handling, filtration systems, exhaust gas treatment systems and power systems, and provides corresponding after-sales services. service. Cummins is headquartered in Columbus, Indiana, USA. The company provides services to customers through its 550 distribution agencies and more than 5,000 distributors in more than 160 countries and regions. Cummins has 34,600 employees worldwide, with sales of 11.4 billion U.S. dollars in 2006 and a net income of 715 million U.S. dollars, an increase of 15% and 30% respectively from 2005. Cummins is named after the founder of Kleesey Lyell Cummings, a self-taught auto mechanic and mechanical inventor. In 1919, with funding from local banker and investor Mr. William Grantan Irvine, Klesi founded Cummins Engine Company. Kleisi was one of the first American entrepreneurs to foresee the huge commercial potential of diesel engines.
Cummins is a Fortune 500 company in the United States and one of Fortune Magazine's 2006 "America's Most Admired Companies".
Cummins Inc. was recently selected as one of the "Top 100 Best Corporate Citizenship Lists in the United States in 2007". This is Cummins's eighth consecutive time being listed on this list. It has become the 11 companies that have been on the list since it was first released in 2000. one. In addition, with its outstanding performance in economic development, environmental protection, and social responsibility, Cummins Inc. was selected for the second consecutive year in the Dow Jones Global Sustainability Index. Among the 2500 largest companies in the world, only the key to sustainable development. The top 10% of the rankings in the index can only be selected on this list.
Cummins has invested more than 140 million U.S. dollars in China. As the largest foreign investor in China's engine industry, Cummins has eight joint ventures and wholly-owned manufacturing companies in China. Among them, Dongfeng Cummins produces B, C and L series diesel engines, and Chongqing Cummins produces M, N and K series diesel engines. Products meet the ISO3046, ISO4001, ISO8525, IEC34-1, GB1105, GB/T2820, CSH22-2, VDE0530 and YD/T502-2000 "Communication Diesel Generator Set Technical Requirements" and other standards.
Ultra High Power Graphite Electrode
Black metal industry standard of the People's Republic of China: ultra High Power Graphite Electrode (YB/T 4090-2000) "regulation of the ultra high power Graphite Electrode shape, size and allow deviation, technical requirements, test methods, inspection rule, packing, marking, storage, transportation and quality certificate. It is applicable to high - power Graphite electrode, which is made of high quality needle coke as the main raw material, which is made of molding, roasting, impregnating, graphitization and machining.
Graphite is very common in nature, and graphene is the intensity of the highest substance known to mankind, but scientists could still take several years or even decades, to find a way to graphite into a large high quality graphene "thin film" method, thus they can be used to manufacture all kinds of useful material for mankind. According to scientists, graphene in addition to very strong, but also has a series of unique features, graphene or conductive performance of the best known materials, which makes it also has great potential applications in the field of microelectronics. The researchers even see graphene as a substitute for silicon that can be used to produce future supercomputers.
superiority
1: the increasing complexity of the geometry of the mould and the diversification of the product application result in the higher and higher demand for the discharge accuracy of the spark machine. The advantage of graphite electrode is that it is easy to process, high removal rate and low graphite loss. Therefore, some of the group spark machine customers have abandoned copper electrode instead of graphite electrode. In addition, some special shaped electrode can't made of copper, but easier to forming, graphite and copper electrode is heavier, not suitable for processing large electrode, these factors have caused part of the group of the graphite electrode spark machine customer applications.
2. Graphite electrode is easier to process, and the machining speed is obviously faster than that of copper electrode. For example, graphite is processed by milling process, and its processing speed is 2~3 times faster than that of other metals, and no additional manual processing is required, while the copper electrode needs to be worn by hand. Similarly, if you use a high speed graphite processing center to make the electrode, it will be faster, more efficient, and will not produce dust problems. In these processes, selecting the right tools and graphite can reduce the abrasion loss of the cutter and the breakage of the copper gong. If the concrete is the milling time of graphite electrode copper electrode and graphite electrode, graphite 67% faster than copper electrode, in the general case of electro discharge machining, the adoption of graphite electrode machining 58% faster than using copper electrode. In this way, the processing time is greatly reduced and the manufacturing costs are reduced.
3: the graphite electrode is different from the traditional copper electrode design. Many mold factory in copper electrode roughing and finishing usually have different requirements, and graphite electrode is used almost the same amount of reserve, this reduces the CAD/CAM and the frequency of machine, sheet is for this reason, to a large extent is enough to improve the precision of the mold cavity.
Of course, the first thing that should be clear is how to use graphite materials and other related factors after the copper electrode is transferred to graphite electrode. Today, some group spark machine customers use graphite for electrode discharge machining, which is exempt from the process of mold cavity polishing and chemical polishing, but still achieve the desired surface finish. If the process of time and polishing is not increased, it is impossible for the copper electrode to produce such an artifact. In addition, the graphite is divided into different levels, and in particular the application of using the appropriate level of graphite and spark discharge parameters to achieve the ideal processing effect, if in the use of graphite electrode spark machine operators use the same as the copper electrode parameters, then the result is certainly disappointing. If the material of the electrode is strictly controlled, the graphite electrode can be used in the non-loss condition (less than 1%), but the copper electrode is not used.
Ultra High Power Graphite Electrode,Conductive Graphite,Mesh Graphite Electrode,Special Graphite Electrodes
Fengcheng Ruixing Carbon Products Co., Ltd , https://www.lnfcrxts.com