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Hitachi Tools (Headquarters: Tokyo) has launched a blade "General-purpose rotary CVD coating blade HG8025 for sheet metal processing" that is resistant to smelting, flaking and Flank wear. Extends tool life by developing new substrates and coatings. The tool life is twice as large as in dry cutting and 1.5 times in wet cutting.
The cross-sectional structure of HG8025 is (1) a substrate, (2) a fine columnar film, (3) an anchor coating adhesive film, and (4) a CVD film, from bottom to top. (1) By adding zirconium (Zr), a superhard material alloy equivalent to P25 (ISO classification), it is less prone to damaging deformation and reduces flank wear. In this way, the accuracy of the machining dimensions can be stabilized. (2) The film was refined by the MT-CVD method to form a columnar structure. Improve wear resistance and toughness. In addition, in addition to Zr, MT-TiZrCN is also used to improve heat resistance. The oxidation resistance is three times that of the original. By the above measures, the crescent wear is reduced, so that high-speed feed cutting can be performed. Due to the reduced surface wear, it is possible to machine a smooth surface and reduce burrs.
The anchor coating effect on the base layer of α-Al2O3 is better than the original (3). The adhesion of α-Al2O3 is enhanced and it is not easy to peel off. (4) A white Zr coating film excellent in folding property and anti-melting property is used. It can reduce the frictional heat generated by the chips and ensure that the blades remain cold. In addition, peeling due to fusion can be prevented.
The company has expanded its Breaker line of products to control all processed chips. The price is 725 to 2,426 yen (tax included).
The cross-sectional structure of HG8025 is (1) a substrate, (2) a fine columnar film, (3) an anchor coating adhesive film, and (4) a CVD film, from bottom to top. (1) By adding zirconium (Zr), a superhard material alloy equivalent to P25 (ISO classification), it is less prone to damaging deformation and reduces flank wear. In this way, the accuracy of the machining dimensions can be stabilized. (2) The film was refined by the MT-CVD method to form a columnar structure. Improve wear resistance and toughness. In addition, in addition to Zr, MT-TiZrCN is also used to improve heat resistance. The oxidation resistance is three times that of the original. By the above measures, the crescent wear is reduced, so that high-speed feed cutting can be performed. Due to the reduced surface wear, it is possible to machine a smooth surface and reduce burrs.
The anchor coating effect on the base layer of α-Al2O3 is better than the original (3). The adhesion of α-Al2O3 is enhanced and it is not easy to peel off. (4) A white Zr coating film excellent in folding property and anti-melting property is used. It can reduce the frictional heat generated by the chips and ensure that the blades remain cold. In addition, peeling due to fusion can be prevented.
The company has expanded its Breaker line of products to control all processed chips. The price is 725 to 2,426 yen (tax included).
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