Email:[email protected]

Recommended Products

compressor rotor blade grinding

PALMARY CNC Cylindrical Grinder OCA-45130 for Compressor ...

May 29, 2020 · GRINDING SOLUTION OF BIG SHAFTS Grinding Example Workpiece : Compressor Rotor Size: O.D. φ227 x L661mm Cylindricity: 5 um MODEL: OCA-45130 CNC Cylindrical Grinder - Heavy Duty Series [ Angular ...

作者: Palmary

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

1. 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 about an axis parallel to the rotor axis and ...

Cited by: 11

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.

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.

Cited by: 5

Axial compressor - Wikipedia

An axial compressor is a gas compressor that can continuously pressurize gases.It is a rotating, airfoil-based compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially.This differs from other rotating compressors such as centrifugal compressor, axi-centrifugal compressors and mixed-flow compressors where the fluid flow will include a "radial ...

Dye Penetrant Inspection Technique of Turbine Rotating ...

Fig -11 : Fractured and Fatigue cracks on Generator Rotor Exciter end fan blades IV. RESULTS AND DISCUSSION The various parts of the steam turbine evaluated were both the compressor and generator rotor, turbine blades, the diffuser, the exhaust hoods, the compressor casings, the generator bearings and retaining rings.


May 24, 2019 · Machining a variable lead rotor blade. Dry Screw Vacuum Pump (DHS VSD+) with Variable Speed Technology - Duration: 1:36. Atlas Copco Vacuum Solutions 371 views

Enhanced Compressor for the 9FA Flared and 9FB Fleets

Features such as dovetail undercuts on R0-R5 blades and dovetail slot coatings on compressor wheels 0–3 also have been added, reducing fretting wear at the rotating blade interfaces. In addition, certain airfoils have been retuned to move natural frequencies for vibratory margin, and tip features have been added to improve rub characteristics.

Enhanced Compressor for the 9FA Flared and 9FB Fleets

Features such as dovetail undercuts on R0-R5 blades and dovetail slot coatings on compressor wheels 0–3 also have been added, reducing fretting wear at the rotating blade interfaces. In addition, certain airfoils have been retuned to move natural frequencies for vibratory margin, and tip features have been added to improve rub characteristics.

How to balance a compressor pt. 2 - A Closer Look - YouTube

Sep 16, 2010 · Fixing the blades for balancing, and spinning up the disk to see how we're doing. ... How to balance a compressor pt. 4 - A Closer Look - Duration: ... Rotor Balancing with Single Plane 4

Cylindrical grinding machine mBTG-DANTIP - Danobat

grinding process to ensure optimized radius of blades for. the best engine efficiency • The dBTM measuring system is fitted to the machine for. measurement of the rotor blades while being ground. Measurement can be either in-process or post process • Compressor blades can be ground to Engine Manufacturer specifications quickly and accurately

Gas turbine engine blade tip grinding | Danobat machine tool

Blade radius measurements with 0.0001” resolution while rotating at speeds up to 1200 SFPM can be obtained. Since the dBTM system is capable of determining the radii without concern for tip reflectivity, the system does not need to be calibrated for each compressor or turbine blade type.

Compressor Rotor - an overview | ScienceDirect Topics

Axial-flow compressor rotor blade with squealer tip. The very high temperature at the exit of the compressor, which in some cases exceeds 1000 °F (537.78 °C), causes a very hot compression section, which also requires the cooling of the bleed flows before they can be used for cooling the turbine section.

Axial Compressors - NASA

May 05, 2015 · Each blade on a rotor or stator produces a pressure variation much like the airfoil of a spinning propeller. But unlike a propeller blade, the blades of an axial compressor are close to one another, which seriously alters the flow around each blade. Compressor blades continuously pass through the wakes of upstream blades that introduce unsteady ...


An experimental investigation to determine the static and dynamic rotor blade stresses of the 3-stage compressor of the Ames Research Center 11- by 11-Foot Transonic Wind Tunnel has been made. The data are presented in terms of total blade stress, defined as the summation of the static and dynamic stresses, for the complete operational range of ...

Manufacturers | Repairs | Energy | Chromalloy

The output of the Chromalloy value chain is what is most important — your parts. Over the years, Chromalloy has invested millions of dollars in the research and development of technological advancements and patented and proprietary repair processes that enable us to extend the life of gas turbine engine parts, and significantly reduce operating expense in a way that no other company can.

Guide to Repair of Aero Engine Components ~ AxiBook

Repair of Turbine Rotor (TR) Blades of TR gets worn out after long use. These blades are replaced with new blades. These blades are to be finished to the specified dimensions by grinding as per the Overhaul Manual to ensure proper clearance. Procedure to be adopted the same as that of compressor rotor. Repair of Turbine Rotor Blade

Search results for: compressor-rotor | RFQSender

Part number Description; 108R857G73: COMPRESSOR ROTOR: View more: 1-100-383-05: BLADE, COMPRESSOR ROTOR THIRD STAGE: View more: 1275M37P01: SHAFT COMPRESSOR ROTOR

Experimental study of rotor blades vibration and noise in ...

Therefore, corresponding relation between the internal noise and rotor blades vibration at different structure adjustment condition of the compressor is accounted in Fig. 9. It is found that once high level vibration of rotor blades occurs, the characteristic frequency noise measured directly above rotor blades appears simultaneously.

Compressor Rotor & Stator Blades | EthosEnergy

With more than 6,000 blade designs, EthosEnergy's Compressor Rotor & Stator Blades holds an inventory to perform quick repairs for your compressor issues.

Compressor Blade - an overview | ScienceDirect Topics

Axial compressor blades are usually forged and milled, but precision casting has been used on occasion. The most common material used is a 12 chrome steel in the AISI 400 series, and is also known as 400 series stainless steel. While the stator blades are occasionally shrouded, the rotor blades

Section Ill. REPAIR - tpub

Blade rework is limited to the outer 2/3 of the blade. Vane rework is limited to the inner 3/4 of the vane. Repair of the compressor rotor and blades consists of blending and polishing to remove nicks, dents, scratches, corrosion, or erosion from the blades, blade fillets

Method for cylindrical grinding turbine engine rotor ...

Apr 23, 1985 · Blade tips of a turbine rotor assembly are ground to precision dimensions of ±0.025 mm (±0.001 inch) when the assembly is rotated at high speed during grinding. The speed should be sufficient to produ


The high-speed version is used when there is the need to use the rotational speed centrifugal force of the grinding machine to lock the blades into their running position on the blade rotor disc. The slow-speed version is used for heavy industrial rotors and compressor casings.


TRENT 1000 ROTOR ASSEMBLY This item was sourced on MFG as one of the items in an RFQ in USA for Other Grinding Supplier to perform rotor blade tip grinding of an 8 stage IP compressor rig. Largest blade tip diameter - 40.9" Smallest blade tip diameter - 32.2" Front to rear bearing span - 48" Front to rear overall length - 63"

Gas Turbine Rotor Life Management and Extension | GE Power

Multiple options are available for power and gas turbine rotor efficiency upgrades. For example, upgrading to a new 7F Advanced Compressor and 3-step aged turbine rotor will provide significant hot day MW (up to 20%) and heat rate improvement (up to 3%), operational flexibility, and maintenance reductions with field-replaceable blades.


DESIGN AND ANALYSIS OF GAS TURBINE ROTOR BLADE USING FINITE ELEMENT METHOD AHMED ABDULHUSSEIN JABBAR1, A. K. RAI2, P. RAVINDER REEDY3 & MAHMOOD HASAN DAKHIL4 1,2,4Department of Mechanical Engineering, SHIATS -DU, Allahabad, India 3Department Professor & Head of Mechanical Engineering.Chaitanya Bharathi Institute of Technology, Hyderabad,

Blades rubs and looseness detection in gas turbines ...

Operational experience showed that blade related failures to be common faults in gas turbines. A review of detection and assessment techniques for blade related failures in gas turbines are presented. This paper examines the use of vibration analysis and monitoring of blade pass frequencies and its side bands for blade rubs and cracks, and wavelet analysis for blades looseness detection.


SUMMARY The effects of diffusion factor, aspect ratio, and solidity on rotor and stage per- formance have been evaluated for 14 subsonic compressor middle stages with a hub-tip ratio of 0.8 and a design tip speed of 243.8 meters per second.Peak rotor efficiencies ranged from 0.898 to 0.944.Peak stage efficiencies ranged from 0.850 to 0.902, and

Aircraft Gas Turbine Engine Compressor Section | Aircraft ...

Functions of compressor section of the aircraft gas turbine engine; main functional elements of the compressor are the impeller and the diffuser. Principal differences between the two types of impellers are size and ducting arrangement. The axial-flow compressor has two main elements: a rotor

REPORT 974 -

FreOn-12. In this compressor, air decelerates through the speed of sound in the rotor blading and enters the stators at subsonic speeds. A preswu.reratio of about 1.8 at an eficiency of about80 percent has beenobtained. INTRODUCTION The occurrence of supersonic velocities in the flow .a.bout. conventional axial-flow compressor blades results in ...

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 an axial rotor

Profile and contour grinding of compressor blade butts

The technologies of profile and contour grinding of blades of a rotor and a compressor stator provide an automated machining of the outer parts contour in the same coordinate system, implement ...

Compressor and turbine stages - University of Cambridge

In a compressor, to raise the pressure, the fluid must be slowed down as it passes through a blade row. In a turbine, to drop the pressure, the fluid must be accelerated as it passes through a blade row. By having alternate stationary and moving blade rows and making use of the change of

What are the reasons to have a tip clearance for an axial ...

Mar 13, 2018 · There has to be clearance between the tip of a blade and the compressor case to prevent excessive blade tip rubs which can result in a substantial loss of performance. Realize, in a modern high ratio bypass fan engine there are many transit forces...

US4512115A - Method for cylindrical grinding turbine ...

Blade tips of a turbine rotor assembly are ground to precision dimensions of ±0.025 mm (±0.001 inch) when the assembly is rotated at high speed during grinding. The speed should be sufficient to produce on the blades a radial acceleration of at least 700 times the force of gravity (6,900 m/s 2 ). For compressor rotors the direction of rotation should be such that the blades move toward their ...