compressor rotor blade grinding

compressor rotor blade grinding

mBTG-DANTIP BLADE TIP GRINDING BLADE TIP

2017-7-17  The rotor blade tip grinder and the stator case turning/grinding machines interchange “data” to obtain dimensionally perfectly matched rotors and casings, thus ... • Compressor blades can be ground to Engine Manufacturer specifications quickly and accurately using the dBTM system for on-line gauge control. Blade radius

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GAS TURBINE BLADE GRINDING - McNair Engineering

Blade grinding capability includes external grinding of rotors, CT PT Discs and internal grinding of stators. Working to clients repair schemes, McNair Engineering has the capacity to * Grind blades up to 800mm outside diameter on compressor rotors, CT and PT discs. * Grind stator blades (ID) on components up to 600mm bore.

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GB2270485A - Grinding blade tips of turbine/compressor ...

A method of grinding blade tips of a turbine or compressor rotor, comprising the steps of spinning a rotor having one or more sets of blades to be ground on its axis, providing a grinding wheel which is narrower than the blades to be ground and having a convexly curved grinding periphery as seen as cross section, rotating the grinding wheel ...

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Stork invests in CNC Grinding Polishing of Turbine ...

STORK invests in CNC Grinding and Polising. In recent years we have both observed and got request from OEM's to CNC polish compressor blades and vanes to optimize flow efficiency and minimize differences due to tolerances in blade geometry, which is essential to the balancing of the compressor rotor and the fit of the stator parts.

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US9114496B2 - Method of tip grinding the blades of a gas ...

A method of grinding the tip of a blade which forms part of a rotor for a gas turbine engine is provided. The method includes mounting a plurality of blades in a disc to provide a blade assembly; mounting the blade assembly in a grinding apparatus; aligning the plurality of blades in a predetermined position using compressed fluid; and, grinding the blade tips.

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GEOMETRY OF SCREW COMPRESSOR ROTORS AND

2009-1-23  grinding tools. Machining accuracy achievable today is high and tolerances in rotor manufacture are of the order of 5 µm around the rotor lobes. Holmes, 1999 reported that even higher accuracy was achieved on the ... A practice predominantly used today for generation of screw compressor rotor profiles is to create primary

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Method of tip grinding the blades of a gas turbine rotor ...

Rotor blade grinding preparation, e.g. for axial flow machine rotors, comprises surrounding the blade free ends with a mantle and then filling the space between the blades with a moldable material: EP0040467: 1981-11-25: MACHINE FOR GRINDING THE BLADE TIPS OF TURBINES OR COMPRESSOR ROTORS: EP1491289: 2004-12-29

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Back to Basics Selecting a Centrifugal Compressor

Rotor Blade Rotor Disc Tie Bolt Labyrinth Package Ring u Figure 2. In an axial Discharge compressor, flow moves in an axial direction (from left to right in this diagram), rather than in a circular direction as in centrifugal compressors. Axial Centrifugal p Figure 3. Flow exits

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COMPRESSOR AVIATION TOOLING - Aviapool

BLADE TIP GRINDER-HP COMPRESSOR ROTOR, STA GE 1-9: 1: 856A4055G13: GRINDER, BLADE TIP - HP COMPRESSOR ROTOR, STAGE 19 (BLADE TIP GRINDER) RQST* We do not currently have a manufacturing solution for this item but will do our best to source it. 856A4192G01: GAGE, MID-CHROUD LENGTH- COMPRESSOR ROTOR BLADE: 1: 856A4325G01

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Design and Analysis of Stator, Rotor and Blades of the ...

2021-8-10  the working fluid, stage efficiency, and number of rotor and stator blades, tip and hub diameters, chord, length and space of blade for rotor and stator, Mach number, flow and blade angles. A repeated stage calculation is made to calculate the above parameters along compressor stages. The traditional approach to axial-flow compressor

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Rotor-grinding machine comprising a rotary head with two ...

The invention relates to a machine (1) for grinding the blades of a turbine rotor (2) or a compressor.The inventive machine consists of a rotary head (6) which is provided with two different grinding wheels (7, 7′) for grinding the rotors (2), three carriages (8, 9, 10) of the head which are used for the linear and angular movement thereof, a machine control unit (16)

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Solving the screw compressor rotor-forming grinding

2019-1-2  As a complex grinding wheel for special use, the screw compressor rotor-forming grinding wheel needs to be designed according to the specific profile of the workpiece. The design process is complicated and difficult to grasp, and various design issues are likely to occur.

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GEOMETRY OF SCREW COMPRESSOR ROTORS AND

2009-1-23  grinding tools. Machining accuracy achievable today is high and tolerances in rotor manufacture are of the order of 5 µm around the rotor lobes. Holmes, 1999 reported that even higher accuracy was achieved on the ... A practice predominantly used today for generation of screw compressor rotor profiles is to create primary

Read More

Gear-Cutting Tool for Screw-Compressor Rotors: (Built-Up ...

A built-up hob for a screw-compressor rotor is proposed. The hob is composed of cutter blades and a hob head. The blade is cut out from a tempered planar

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Design and Analysis of Stator, Rotor and Blades of the ...

2021-8-10  the working fluid, stage efficiency, and number of rotor and stator blades, tip and hub diameters, chord, length and space of blade for rotor and stator, Mach number, flow and blade angles. A repeated stage calculation is made to calculate the above parameters along compressor stages. The traditional approach to axial-flow compressor

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Blade Tip for Aerospace Industry Machining Solutions ...

These machines grind the blade tips of the rotor while they are being spun at high speed, (up to 7000 rpm) thereby presenting the blades to the grinding wheel under the appropriate operating conditions. This feature ensures the highest degree of

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CHAPTER 9 Design and optimization of Turbo compressors

2014-5-10  were stacked up to a three-dimensional rotor blade of a compressor. The effi ciency is improved over a wide range of mass fl ow. The results indicate that the optimiza-tion process can provide improved design and can be integrated into a compressor design procedure. Initial design considerations of turbo compressor are commonly

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IMPELLER REPAIR TECHNIQUES FOR CENTRIFUGAL

2021-5-27  stage compressors with high thermal or mechanical distortions or in multistage compressors where high efficiency is required. With multiple open face impellers on a common shaft, it would be impossible to control the clearance between the impeller blades and the casing due to the thermal expansions of the rotor and the casings.

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Probabilistic Aerothermal Design of Compressor Airfoils

2017-6-17  assess the impact of uncertainty on aerodynamic performance of compressor rotor airfoils. Three rotor blades with inlet relative Mach numbers of 0.82, 0.90 and 1.25 were considered. Discrepancies between nominal and mean loss (mean-shift) of

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Aircraft Gas Turbine Engine Compressor Section

2021-12-1  Compressor blade tips are reduced in thickness by cutouts, referred to as blade profiles. These profiles prevent serious damage to the blade or housing should the blades contact the compressor housing. This condition can occur if

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Solving the screw compressor rotor-forming grinding

2019-1-2  As a complex grinding wheel for special use, the screw compressor rotor-forming grinding wheel needs to be designed according to the specific profile of the workpiece. The design process is complicated and difficult to grasp, and various design issues are likely to occur.

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Turbine blade grinding and polishing machine ? vertical ...

IMMs technology to CNC polish compressor blades and vanes to optimize flow efficiency and minimize differences due to tolerances in blade geometry, which is essential to the balancing of the compressor rotor and the fit of the stator parts. Our CNC-Machines type SPE and MTS allows automatic polishing of all rows of the Gas Turbine Compressor ...

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Gear-Cutting Tool for Screw-Compressor Rotors: (Built-Up ...

A built-up hob for a screw-compressor rotor is proposed. The hob is composed of cutter blades and a hob head. The blade is cut out from a tempered planar

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Tools and Strategies for Grinding of Riblets on Freeformed ...

2016-1-1  These profiles were used to grind riblets on a compressor blade with a tool path radius of 250 mm. This tool path radius required a maximum grinding wheel radius of 150 mm. The results of the grinding experiments are shown in fig. 8. The surface of the compressor blade was structured with two different riblet-widths.

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Impact analysis of compressor rotor blades of an aircraft ...

Isolated rotor and stator blades of the compressor, each with a mass of 1.3 and 0.65 kg are shown in Figs. 3(b) and 3(c), respectively. The rotor blades of the R-35-300 axial flow compressor in the present MIG-23 gas turbine engine are made up of Aluminum alloys, which can operate at high pressures and temperatures up to 500°C.

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Compressor Blade - an overview ScienceDirect Topics

Compressor blade rows with axial and/or circumferential grooves constantly have to handle some leakages around the root sections, because the pressure at the trailing edge is higher than that of the leading edge and therefore a pressure gradient is available to drive some leakage flow. These small slots between the blade root and the channel contour have some flow devicing impact

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Method for repairing gas turbine compressor rotor blades ...

2004-10-27  A method facilitates repairing a gas turbine engine compressor blade airfoil (20). The method comprises removing titanium alloy material (61) from along leading and trailing edges (34 and 36) of the airfoil, and along a radially outer tip (40) of the airfoil to form respective leading edge, trailing edge, and tip cut-backs (62, 64, and 66) which each define cut-back depths (D1,

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Probabilistic Aerothermal Design of Compressor Airfoils

2017-6-17  assess the impact of uncertainty on aerodynamic performance of compressor rotor airfoils. Three rotor blades with inlet relative Mach numbers of 0.82, 0.90 and 1.25 were considered. Discrepancies between nominal and mean loss (mean-shift) of

Read More

Aircraft Gas Turbine Engine Compressor Section

2021-12-1  Compressor blade tips are reduced in thickness by cutouts, referred to as blade profiles. These profiles prevent serious damage to the blade or housing should the blades contact the compressor housing. This condition can occur if

Read More

IMPELLER REPAIR TECHNIQUES FOR CENTRIFUGAL

2021-5-27  stage compressors with high thermal or mechanical distortions or in multistage compressors where high efficiency is required. With multiple open face impellers on a common shaft, it would be impossible to control the clearance between the impeller blades and the casing due to the thermal expansions of the rotor and the casings.

Read More