Download or read book Exploratory Development to Improve Standard Cutting Tool Material by Infusion with Metallic Carbides Ceramic Or Diamond written by Alfred Otto Schmidt and published by . This book was released on 1968 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploratory Development to Improve Standard Cutting Tool Materials by Infusion with Metallic Carbides Ceramics Or Diamond written by A. O. Schmidt and published by . This book was released on 1968 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-speed steel (HSS) tools with carbide infusion and other treatments were compared experimentally in tool life tests with straight HSS tools. Test results were encouraging and indicated a substantial improvement of performance by tools with tungsten carbide infused on the tool face along the cutting edge. Reduced crater wear was noted in most cases as well as more disposable shorter chips when turning AISI-4340, Bhn 280, and Hastelloy. Tools with various types of laser treatments were prepared. (Author).
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New and Improved Cutting Tool Materials written by E. Dow Whitney and published by . This book was released on 1969 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report contains the results of a continued effort designed to develop new and improved ceramic cutting tool inserts for the more efficient and economical machining of the refractory hard metals required in the fabrication of aerospace devices. (Author).
Download or read book Cutting Tool Materials written by and published by . This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Improved Cutting Tool Materials written by Robert Venuti and published by . This book was released on 1966 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cemented-carbide tool materials with refractory metal binders have been developed that exhibit exceptional cutting capabilities under conditions of high feeds and speeds on Rc 53, 4340 steel. Those experimental materials with the greatest potential contain a Ni-Cb or Co-Mo refractory matrix in combination with WC. TiC solid solutions plus additions of TaC. The wetting propensities of Cb and Mo were enhanced by the alloying additions enabling the densification of ball-milled powders by hot pressing. Liquid phase sintering was achieved at temperatures extending to 2000 C and pressing pressures ranging to 5000 psi. These materials are characterized by transverse rupture strengths exceeding 125,000 psi and hardness above RA93. Wettability and compatibility studies of various refractory alloys, Co-Ta, V-Ta, Co-W, Cr-Cb and others, in combination with TiC, TaC, ZrC, HfC, WC and WC. TiC 70/30 w/o solid solutions were conducted. Dense heterogeneous materials were evaluated by microstructure, mechanical properties, X-ray diffraction analyses and single-point turning tests. An impartial testing laboratory, Metcut Research Associates, performed extensive machinability tests on all potential materials during which experimental tools were compared to commercially available tools. Comparative tool-life curves graphically portraying the excellent performance of the experimental materials were provided by the Metcut laboratory. (Author).
Download or read book Towards Improved Performance of Tool Materials written by R. S. Irani and published by . This book was released on 1982 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials for Metal Cutting written by British Iron and Steel Research Association and published by IOM Communications, Limited. This book was released on 1970 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook Firthite Sintered Carbide Cutting Tools written by Firth Sterling (Firm) and published by . This book was released on 1952 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cutting Tool Materials written by Frank W. Gorsler and published by . This book was released on 1981 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Improved Cutting Tool Materials written by Nathan H. Cook and published by . This book was released on 1969 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the normal stresses on the tool face are less than about half the transverse rupture strength of the tool, cratering wear of cemented carbide tools occurs by the thermally activated dissolution of the pure WC grains in the tool. Complex carbide grains are not removed in this manner but come off as discrete particles of the order of magnitude of the grain size. At any given cutting temperature, these complex carbides have only a minor influence on the cratering wear rate. The major beneficial effect of the complex carbides appears to be to reduce the chip-tool contact length. The consequent reduction in cutting temperature, at a given feed, speed, etc., leads to a marked decrease in the wear rate. At sufficiently short contact lengths, however, these effects are negated by the rise of the tool face stress to a value over half the transverse rupture strength of the tool. Catastrophic adhesive wear then sets in. A temperature-stress optimal contact length therefore exists for each type of tool material. Tool-work diffusion studies and electron microscope observations of chip surfaces provide qualitative support for the proposed wear model. The conclusions with respect to the cratering wear of high speed steel tools are generally similar to those for carbide tools. A critical stress level exists below which adhesive wear does not occur. An atomic jump model of thermally activated wear correlates the experimental data with good accuracy. (Author).
Download or read book Development of Improved Cutting Tool Materials written by F. C. Holtz and published by . This book was released on 1967 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: New tool materials were developed to achieve increased cutting efficiency. High-speed steels of the M2 type were enriched in titanium, hot worked, then solid-state carburized. These tools showed a permissible cutting speed increase of about 35% compared to commercial 'RC 70' type high-speed steel when used for turning AISI 4340, RC 44. Similar increases in cutting performance were measured for cast-to-shape tools based on M1 high-speed steel containing 10% V, up to 2% Ti and 3.5 % C. Age-hardenable cobalt-base tool alloys were prepared by the hot working of atomized powders. The most promising alloy was Co-45Cr-15W-2.5C, which exhibited a permissible cutting speed increase of 120% over the commercial cast cobalt-base tool alloy in turning the RC 44 steel; a speed increase of 35% was achieved in turning AISI 4340 at RC 52. Cemented carbide tool alloys having matrix melting points near 1800 C (3270 deg F) were prepared by liquid-phase sintering or arc-melting Compositions in the Cb-V-C and Ti-V-C systems were the most promising. Initial studies of arc-melted 80Hf-20Ta, nitrided at 1930 C (3500 F), showed a cutting speed capability similar to that of commercial alumina tools on AISI 4340, RC 44.5. (Author).
Download or read book New Developments in Tool Materials and Applications written by and published by . This book was released on 1977 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Cutting Tools written by Amitabha Bhattacharyya and published by . This book was released on 1969 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of 3C SiC Interlayers for Diamond Deposition on Cemented Carbide Cutting Tools written by Ifakat Seda Erbaş and published by . This book was released on 2014-02-24 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development of New and Improved Cutting Tool Materials written by E. Dow Whitney and published by . This book was released on 1966 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report are presented the results of effort undertaken during the third quarter of Phase I of a program designed to develop new cutting tool materials for the machining of refractory metals for aerospace applications. Herein are discussed the development of techniques for the fabrication of experimental cutting tools inserts from promising carbide, nitride, and boride systems as well as the results of cutting tests employing various alumina-base tool compositions. (Author).
Download or read book Development of Improved Cutting Tool Materials written by Philip H. Crayton and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
