1. Roll processing industry
Many large domestic roll companies have used superhard tools to carry out rough turning, rough turning and finishing turning of various types of rolls such as chilled cast iron and hardened steel, and they have achieved benefits to varying degrees. 7 The average processing efficiency is increased by 2 to 6 times. , saving processing time and electricity by 50% to 80%. For rough turning and semi-finishing of chilled cast iron rolls with a hardness of HS60-80, the cutting speed is increased by 3 times. One roll per car saves more than 400 yuan in electricity and labor costs, and saves nearly 100 yuan in tool costs. Huge economic benefits have been achieved. For example, when our school uses FD22 cermet tool to turn 86CrMoV7 hardened steel rolls of HRC58~63 (Vc=60m/min, f=0.2mm/r, ap=0.8mm), the continuous cutting roll path reaches 15000m (tool tip back cutter The maximum width of the surface wear belt is VBmax=0.2mm), which meets the requirement of grinding instead of turning.
2. Industrial pump processing industry
At present, 70% to 80% of domestic ballast pump manufacturers have adopted superhard tools. Ballast slurry pumps are widely used in mining, electric power and other industries, and are urgently needed products at home and abroad. In the past, due to the difficulty of turning this material with various tools, the process of annealing and softening, roughing, and then quenching was used. After the use of super-hard cutting tools, the first-time hard tool has been successfully realized. 3. Automobile processing industry
In the processing of crankshafts, camshafts, transmission shafts, cutting tools, measuring tools and equipment maintenance in the automobile, tractor and other industries, the processing problems of hardened workpieces are often encountered. For example, a locomotive and rolling stock factory in my country needs to process the inner ring of the bearing during equipment maintenance. The hardness of the inner ring of the bearing (material GCr15 steel) is HRC60, and the diameter of the inner ring is f285mm. The grinding process is used, and the grinding allowance is uneven. It takes 2 hours to grind it well; and the super-hard tool is used first, and it takes only 45 minutes to process an inner ring.
