2002-1-1 HEDG conditions also have very apparent effects on the depth of heat penetration to the workpiece. The parameters investigated include mean contact angle, Peclet number and the heat source distribution. Experimental results are presented for specific energy, energy partition and mean temperature for high efficiency deep grinding.
دردشة على الإنترنت Read More2001-1-1 HEDG is defined as deep grinding at high workspeeds and very high removal rates. The contact between the workpiece and wheel is represented as a circular surface. It is found that the contact angle and also the Peclet number (widely used in heat transfer and defined below) have strong effects on the grinding zone temperatures.
دردشة على الإنترنت Read More2005-9-1 Temperature measurements are employed for research into the mechanics of grinding and for process monitoring. Temperature measurement in grinding presents a number of challenges particularly in High-Efficiency Deep Grinding (HEDG). High work-speeds require fast response and deep cuts require measurement over a large temperature field.
دردشة على الإنترنت Read More2021-3-6 at a given grinding temperature value T by using deep grinding. The use of conventional multi-pass grinding with a relatively small grinding depth t in this case it is more preferable, since it provides an increase in the productivity of processing Q. To increase processing performance Q during deep grinding it is necessary, firstly, to
دردشة على الإنترنت Read More2006-5-1 A new approach is introduced to refine the analysis for the chip energy in the highefficiency deep grinding process, by considering the heat partitioning at the chip formation area. The analysis for the chip-work subsystem has been combined with the whole thermal system to derive the grinding temperature on the workpiece surface.
دردشة على الإنترنت Read More2008-11-1 In the dry grinding, the temperature rapidly rose right from the first contact point, and reached 920 °C very quickly. In contrast, when the rest of the grinding conditions remained unchanged, the wet grinding temperature maintained reasonably stable at about 200 °C prior to the rapid rise to 800 °C, as shown in Fig. 4(c).
دردشة على الإنترنت Read MoreA critical factor for calculating grinding temperatures is the energy partition, which is the fraction of the grinding energy transported as heat to the workpiece at the grinding zone. For shallow cut grinding with conventional abrasive wheels, the energy partition is typically 60%–85%.
دردشة على الإنترنت Read MoreEffects of the grinding conditions, including wheel velocity, feed rate and depth of cut, on the temperature were investigated. The results indicate that the grinding temperatures measured under different grinding conditions varied from 100 to 300 °C.
دردشة على الإنترنت Read More2014-5-17 grinding, bum-out of the coolant causes a steep rise in contact temperature of the workpiece. 1 Introduction Cost, quality and productivity in grinding processes are all dependent on energy consumption and process efficiency. In an inefficient process, excessive heat leads to increased temperature rise in the workpiece causing problems with
دردشة على الإنترنت Read MoreDeepL trains artificial intelligence to understand and translate texts.
دردشة على الإنترنت Read More2021-3-6 at a given grinding temperature value T by using deep grinding. The use of conventional multi-pass grinding with a relatively small grinding depth t in this case it is more preferable, since it provides an increase in the productivity of processing Q. To increase processing performance Q during deep grinding it is necessary, firstly, to
دردشة على الإنترنت Read MoreAbstract: The paper presents an investigation of the thermal behaviour of high speed deep grinding (HSDG) for engineering ceramics, yttria partially stabilised zirconium (PSZ) and Al 2 O 3, using the grindable thermocouple technique. Effects of the grinding conditions, including wheel velocity, feed rate and depth of cut, on the temperature ...
دردشة على الإنترنت Read MoreA theoretical analysis of the conditions for reducing the temperature of grinding has been carried out and it has been shown that temperature of deep... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.
دردشة على الإنترنت Read More2014-10-11 Read "Grinding temperature during high-efficiency grinding Inconel 718 using porous CBN wheel with multilayer defined grain distribution, The International Journal of Advanced Manufacturing Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
دردشة على الإنترنت Read MoreA grinding thermal model was presented for high efficiency deep grinding, that was the circular arc heat source model. The circular arc thermal model improves temperature estimation. The integral expression of temperature is given for the circular arc feat source ...
دردشة على الإنترنت Read More2021-2-7 Experimental Investigation of Grinding Temperature and Its Effects on Surface Quality in Surface Grinding: Zhou Zhixiong ;Mao Cong;Zhou Dewang;Ren Yinghui
دردشة على الإنترنت Read More2014-5-17 grinding energy compared with shallow grinding and creep grinding. The chips take away most of the heat generated in the grinding process. As in creep grinding, bum-out of the coolant causes a steep rise in contact temperature of the workpiece. 1 Introduction Cost, quality and productivity in grinding processes are all dependent on energy ...
دردشة على الإنترنت Read More2010-5-23 value of 13.8 J/mm3 for grinding all ferrous materials [3], and u is the total specific energy required for grinding, On The Temperature and Residual Stress Field During Grinding S. M. H-Gangaraj, G. H. Farrahi and H. Ghadbeigi Proceedings of the World Congress on Engineering 2010 Vol II WCE 2010, June 30 - July 2, 2010, London, U.K.
دردشة على الإنترنت Read More2007-7-1 Reset your password. If you have a user account, you will need to reset your password the next time you login. You will only need to do this once.
دردشة على الإنترنت Read More2013-10-14 Grinding – Ex. 1-1 • You are grinding a steel, which has a specific grinding energy (u) of 35 W-s/mm3. • The grinding wheel rotates at 3600 rpm, has a diameter (D) of 150 mm, thickness (b) of 25 mm, and (c) 5 grains per mm2. The motor has a power of 2 kW. • The work piece moves (v) at 1.5 m/min. The chip thickness ratio (r) is 10.
دردشة على الإنترنت Read MoreAbstract: The paper presents an investigation of the thermal behaviour of high speed deep grinding (HSDG) for engineering ceramics, yttria partially stabilised zirconium (PSZ) and Al 2 O 3, using the grindable thermocouple technique. Effects of the grinding conditions, including wheel velocity, feed rate and depth of cut, on the temperature ...
دردشة على الإنترنت Read More2021-3-6 at a given grinding temperature value T by using deep grinding. The use of conventional multi-pass grinding with a relatively small grinding depth t in this case it is more preferable, since it provides an increase in the productivity of processing Q. To increase processing performance Q during deep grinding it is necessary, firstly, to
دردشة على الإنترنت Read MoreA theoretical analysis of the conditions for reducing the temperature of grinding has been carried out and it has been shown that temperature of deep... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.
دردشة على الإنترنت Read More2014-10-11 Read "Grinding temperature during high-efficiency grinding Inconel 718 using porous CBN wheel with multilayer defined grain distribution, The International Journal of Advanced Manufacturing Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
دردشة على الإنترنت Read More2015-12-3 Grinding temperature, energy partitioning into workpiece, and wheel wear were investigated. Results obtained show that long maintenance of low grinding temperature, that is, 50 °C–170 °C, is obtained in high-efficiency deep grinding with the porous metal-bonded cubic boron nitride wheel.
دردشة على الإنترنت Read More2010-5-23 value of 13.8 J/mm3 for grinding all ferrous materials [3], and u is the total specific energy required for grinding, On The Temperature and Residual Stress Field During Grinding S. M. H-Gangaraj, G. H. Farrahi and H. Ghadbeigi Proceedings of the World Congress on Engineering 2010 Vol II WCE 2010, June 30 - July 2, 2010, London, U.K.
دردشة على الإنترنت Read MoreThe grinding temperature in wheel-workpiece contact zone in HSDG of alumina ceramic was measured using the grindable K type thermocouple. Effects of the grinding conditions, including wheel velocity, feed rate and depth of cut, on the temperature were investigated. The results indicate that the grinding temperatures measured under different grinding conditions varied from 100 to 300 °C.
دردشة على الإنترنت Read More2014-5-17 grinding energy compared with shallow grinding and creep grinding. The chips take away most of the heat generated in the grinding process. As in creep grinding, bum-out of the coolant causes a steep rise in contact temperature of the workpiece. 1 Introduction Cost, quality and productivity in grinding processes are all dependent on energy ...
دردشة على الإنترنت Read More2003-1-30 to the grinding region, where tempera - tures are high due to conduction. Oxi - dation burn is a poor indicator of whether thermal damage has occurred because it’s unpredictable. Thermal softening occurs when the grinding temperature exceeds the tem - pering temperature of the workpiece material. Overtempering causes the workpiece surface to ...
دردشة على الإنترنت Read More2013-10-14 Grinding – Ex. 1-1 • You are grinding a steel, which has a specific grinding energy (u) of 35 W-s/mm3. • The grinding wheel rotates at 3600 rpm, has a diameter (D) of 150 mm, thickness (b) of 25 mm, and (c) 5 grains per mm2. The motor has a power of 2 kW. • The work piece moves (v) at 1.5 m/min. The chip thickness ratio (r) is 10.
دردشة على الإنترنت Read More