effects of open pores on grinding performance of porous metal

Effects of open pores on grinding performance of porous metal

Prior to the grinding wear tests, porous metal-bonded AcBN wheels should be dressed with resin-bonded diamond wheels and the subsequent abrasive blasting processes. Furthermore, the top surface of the Ti–6Al–4V alloys samples should be grinded with conventional abrasive wheels to avoid the unfavorable impacts between the grinding tools and Porous metal-bonded grinding wheel is in great demand but hard to realize with traditional fabrication process. In this article, a novel design and fabrication method of porous metal-bonded A porous CBN wheel was fabricated with a total porosity around 30%. The grinding performance of the porous composite-bonded CBN wheel was evaluated in terms of specific force, specific grinding energy, and grinding temperature, which were better than those of the vitrified one under the same grinding conditions.

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porous metal bonds increase the resource efficiency for

Porous Metal Bonds Increase the Resource Efficiency for

Fig. 3. Thermal loads on porous metal bonded grinding wheels and wheels used in the industrial practice For constant process parameters the new bond type allows a reduction of the process temperatures of up to 23 %. The reduction of the process temperature comes from two main effects. Resin bonded grinding wheels do not have pores 2.2 Porous metal bonded grinding wheels. The bond of the traditional metal bond grinding wheel is relatively dense, and there are few or almost no pores in the grinding wheel, which greatly affects the grinding performance and the efficiency of the wheel, and dressing is difficult. Li Z, Ding WF, Ma CY, Xu JH (2017) Grinding temperature and tool wear of porous metal-bonded CBN superabrasive wheels in high-efficiency deep grinding. Proc Inst Mech Eng B J Eng Manuf 231(11):1961–1971. Article Google Scholar 2.

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research on variation of grinding temperature of wind turbine

Research on variation of grinding temperature of wind turbine

Grinding temperature and power consumption in high speed grinding of Inconel 718Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high-efficiency deep grinding. Proc IMechE, Part B: J Engineering Manufacture 2017 ; 231: 1961 – 1971 . Higher wheel speed is limited by the wheel design, type of bond, grinding operation, power and rigidity of the grinding machine, etc. Wheel speed normally varies between 20 to 40 m/sec depending on type of bond and different grinding operations. (ii) Work Speed: Increase in work speed increases the wheel wear, but decreases the heat produced.

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fabrication and performance of porous metal-bonded cbn

Fabrication and performance of porous metal-bonded CBN

Porous metal-bonded cubic boron nitride (CBN) composite blocks and grinding wheels were fabricated using alumina bubble particles as pore-forming agents and Cu-Sn-Ti alloy as bonding material. The influence of the porosity on the mechanical strength of the porous composite blocks was examined by means of three-point bending tests. The microstructure of the blocks fracture surface was Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high- efficiency deep grinding By olga kulik University of Nebraska -Lincoln [email protected] of Nebraska -Lincoln STUDY OF GRINDING BURN USING DESIGN OF EXPERIMENTS APPROACH AND ADVANCED KAIZEN METHODOLOGY M Metal Vitrified-bonded wheels are the most common and are used with both conventional abrasives and superabra-sives. They are stiff (good for precision grinding), have a porous structure and are not sensitive to high tempe-ratures. Resin-bonded wheels are non-porous, less stiff (good for finer surface finishes), tough (less brittle, good

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processes & innovative tools for high performance grinding

PROCESSES & INNOVATIVE TOOLS FOR HIGH PERFORMANCE GRINDING

Starting point: Thermal damage at the surface (burn), when the grinding wheels wear down to a lower diameter Grinding wheel 300 –180 mm Ø, NQ vit bond, 2 grade of hardness (hard = bond volume + 50%) Inconel, oil, v c = 22 m/s, v w = 500 mm/min, a e = 1 mm >>> Q‘ w 8,3 mm³/mm.s, h ec 0,38 µm Grinding results: Therefore, research and development of high-temperature brazing technology as a core technology for the manufacture of multi-layer metal bond diamond grinding wheel and combined with the design idea of porous metal bond diamond grinding wheel and grinding wheel geomorphology optimization, is the metal bond diamond An effective way to develop Grinding Wheel Wear Grain fracture: a portion of the grain breaks off, but the rest of the grain remains bonded in the wheel. Attritious wear: dulling of the individual grains, resulting in flat spots and rounded edges. Bond fracture: the individual grains are pulled out of the bonding material.

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burn threshold of high-carbon steel in high-efficiency deep

Burn threshold of high-carbon steel in high-efficiency deep

Abstract. The burn-threshold of high-carbon steel (51CrV4) in the high-efficiency deep-grinding (HEDG) process is investigated. It is found that the burn threshold in HEDG is determined by the wheel-workpiece contact length, material removal rate and wheel speed. the grinding wheel. With some combinations of grinding wheel, workpiece material, and grinding conditions, the grinding wheel bond is erode d by the workpiece at a rat e sufficient to continu-ously expose new, sharp diamond grains while eliminating old, dull grains. Such "self-dressing" processes are rare, unfortu-nately. The invention belongs to the grinding apparatus abrasive material grinding technical field and relates to a composite metal resin-bonded diamond grinding wheel. The composite metal resin-bonded diamond grinding wheel is made of the following raw materials in part by weight: 15 to 35 parts of diamond abrasive material, 5 to 10 parts of CBN, 5 to

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temperature investigation of coated workpieces in

Temperature investigation of coated workpieces in

The heat transfer process, the end-face temperature of a single wear particle, and the one-dimensional heat transfer model are integrated to study the heat flux into the workpiece. The energy partition ratio is obtained under conditions of different grinding parameters in order to make the temperature model precise. High-Performance Lubrication (HPL) Grinding Wheels. HPL grinding wheels rely on premium-grade CBN crystals fixed with durable, porous, intrinsically lubricated bonding matrix to allow faster grinding of difficult materials without sacrificing quality due to wheel loading and/or part burning. Faster Grinding Without Burning. HPL (High Performance Lubrication) Grinding Wheels rely on premium grade CBN crystals fixed within a durable, porous, lubricated acting bonding matrix to allow substantially faster grinding of difficult materials without sacrificing quality due to wheel loading and/or part burning.

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high-performance lubrication (hpl) grinding wheels

High-Performance Lubrication (HPL) Grinding Wheels

Meister Abrasives’ high-performance lubrication (HPL) grinding wheels rely on premium-grade CBN crystals fixed with durable, porous, intrinsically lubricated bonding matrix to allow faster grinding of difficult materials without sacrificing quality due to wheel loading and/or part burning. Meister Abrasives says its new HPL (High Performance Lubrication) grinding wheels rely on premium-grade CBN crystals fixed with durable, porous, intrinsically lubricated bonding matrix to allow substantially faster grinding of difficult materials without sacrificing quality due to wheel loading and/or part burning. Grinding temperature during high-efficiency grinding Inconel 718 using porous CBN wheel with multilayer defined grain distribution ZZ Chen, JH Xu, WF Ding, CY Ma, YC Fu The International Journal of Advanced Manufacturing Technology 77 (1), 165-172 , 2015

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