The application and development of hard materials

The 15th International Plannti conference was held at the WaHer Schwarzkopt Haus Conference Center in Loiat, Tyrol, Austria. 500 delegates from 40 countries and regions attended the conference. At the meeting, some experts exchanged the research progress of hard materials.
The meeting discussed the development of ultrafine and nano-sized cemented carbide as well as cutting tools for extreme conditions. Mr. G Gill from HC Starck in Germany commented on the great development of submicron cemented carbide in the past ten years with users of other manufacturers and pointed out that in the various factors that affect the performance of the alloy, The development of materials has played an important role. As tungsten carbide (WC) powder size has been reduced to the sub-micron level, and even as low as 0.2μm. For sub-micron grain cemented carbide applications, G Gille believes that in 2000 the world (including the country) submicron grain cemented carbide production between 11500 ~ 12500t, accounting for 40% of the total carbide output, . Its share of the largest share of carbide drill bits, carbide mills, etc., up to 60%, about 7000 ~ 7500t, and these applications are still growing rapidly; miniature bits for the electronics industry accounted for 13%; wear parts, Circuit board scissors, paper and plastic cutters, chip forming molds, dental tools, etc. accounted for 18%; woodworking tools accounted for 4%; metal cutting inserts accounted for 5%. Micro-drilling of printed circuit boards is one of the foremost and most important applications for sub-micron cemented carbides, with a dramatic increase in consumption. In the past 15 years, the speed of micro-drilling has been increased from 80000r / min to 180,000r / min, while the drill diameter has been reduced from 500μm to 200μm. The latest generation of micro-drill diameter has dropped to 70μm.
In the sub-micron carbide applications, metal cutting inserts only account for a smaller share. Experiments have shown that submicron carbide metal cutting inserts are reliable for milling automotive cast iron and aluminum components and are expected to grow somewhat in this area of ​​application, especially for ultra-fine (0.16μm) grain hard Metals
F Friedrichs from Konrad Friedrichs in Germany thinks that there is also a tendency for the shaft processing tools to gradually transition from high speed steel tools to solid carbide tools. The K44 grades (WC12% Co with Cr3C2 and VC grain growth inhibitors, Particle size of 0.5μm) has become the standard milling cutter and profiled cutter. F Friedrichs is convinced that grades K of 6% to 12% Co with grain sizes of 1.5-0.2 μm may account for 90% of the market, and there is still ample research and development space for the production of carbide and cemented carbide.
In this meeting, the characteristics of ultrafine carbide powder were discussed. A Bock and B Zeiler of Austria discussed the production of submicron powders by the CRC (calcining? Reduction? Carbonization) process and pointed out that the addition of chromium prior to calcination provides good control of grain growth As the additive can be uniformly dispersed in the grain boundaries between the carbide particles. W Grogger and his colleagues at the Austrian Technical University of Technology and the company Triclion Triti have used advanced analytical electron microscopy to study the chemical composition and distribution of cemented carbide additives made with sub-micron powders. They found that the cemented carbide doped with chromium and vanadium had a vanadium carbide film at the interface and between grain boundaries of the tungsten carbide without chromium.
KKitamura of Tokyo University in Japan and Tangelooy of Toshiba and their colleagues discussed the new WC-Co cemented carbide made of a complex (WC) tungsten carbide with a plate-like structure and having Anisotropy, the fracture toughness value higher than the conventional carbide 10% to 15%, the same hardness level.
At the meeting, delegates also exchanged technical ideas on cutting tools such as ceramics, cermets, diamond tools and coated blades used in extreme conditions (such as dry cutting of difficult-to-machine materials) and their coating processes.

(Today Hardware Editing)

The 15th International Plannti conference was held at the WaHer Schwarzkopt Haus Conference Center in Loiat, Tyrol, Austria. 500 delegates from 40 countries and regions attended the conference. At the meeting, some experts exchanged the research progress of hard materials.
The meeting discussed the development of ultrafine and nano-sized cemented carbide as well as cutting tools for extreme conditions. Mr. G Gill from HC Starck in Germany commented on the great development of submicron cemented carbide in the past ten years with users of other manufacturers and pointed out that in the various factors that affect the performance of the alloy, The development of materials has played an important role. As tungsten carbide (WC) powder size has been reduced to the sub-micron level, and even as low as 0.2μm. For sub-micron grain cemented carbide applications, G Gille believes that in 2000 the world (including the country) submicron grain cemented carbide production between 11500 ~ 12500t, accounting for 40% of the total carbide output, . Its share of the largest share of carbide drill bits, carbide mills, etc., up to 60%, about 7000 ~ 7500t, and these applications are still growing rapidly; miniature bits for the electronics industry accounted for 13%; wear parts, Circuit board scissors, paper and plastic cutters, chip forming molds, dental tools, etc. accounted for 18%; woodworking tools accounted for 4%; metal cutting inserts accounted for 5%. Micro-drilling of printed circuit boards is one of the foremost and most important applications for sub-micron cemented carbides, with a dramatic increase in consumption. In the past 15 years, the speed of micro-drilling has been increased from 80000r / min to 180,000r / min, while the drill diameter has been reduced from 500μm to 200μm. The latest generation of micro-drill diameter has dropped to 70μm.
In the sub-micron carbide applications, metal cutting inserts only account for a smaller share. Experiments have shown that submicron carbide metal cutting inserts are reliable for milling automotive cast iron and aluminum components and are expected to grow somewhat in this area of ​​application, especially for ultra-fine (0.16μm) grain hard Metals
F Friedrichs from Konrad Friedrichs in Germany thinks that there is also a tendency for the shaft processing tools to gradually transition from high speed steel tools to solid carbide tools. The K44 grades (WC12% Co with Cr3C2 and VC grain growth inhibitors, Particle size of 0.5μm) has become the standard milling cutter and profiled cutter. F Friedrichs is convinced that grades K of 6% to 12% Co with grain sizes of 1.5-0.2 μm may account for 90% of the market, and there is still ample research and development space for the production of carbide and cemented carbide.
In this meeting, the characteristics of ultrafine carbide powder were discussed. A Bock and B Zeiler of Austria discussed the production of submicron powders by the CRC (calcining? Reduction? Carbonization) process and pointed out that the addition of chromium prior to calcination provides good control of grain growth As the additive can be uniformly dispersed in the grain boundaries between the carbide particles. W Grogger and his colleagues at the Austrian Technical University of Technology and the company Triclion Triti have used advanced analytical electron microscopy to study the chemical composition and distribution of cemented carbide additives made with sub-micron powders. They found that the cemented carbide doped with chromium and vanadium had a vanadium carbide film at the interface and between grain boundaries of the tungsten carbide without chromium.
KKitamura of Tokyo University in Japan and Tangelooy of Toshiba and their colleagues discussed the new WC-Co cemented carbide made of a complex (WC) tungsten carbide with a plate-like structure and having Anisotropy, the fracture toughness value higher than the conventional carbide 10% to 15%, the same hardness level.
At the meeting, delegates also exchanged technical ideas on cutting tools such as ceramics, cermets, diamond tools and coated blades used in extreme conditions (such as dry cutting of difficult-to-machine materials) and their coating processes.

(Today Hardware Editing)

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