Adaptive belt grinding of gas-turbine blades

Волков, Д. И.; Koryazhkin, A. A.

doi:10.3103/s1068798x14010171

Cited by 23 publications

(4 citation statements)

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“…In studies of the grinding process, a significant inconsistency in the information on the selection of technological parameters of the grinding of steels and alloys, including the selection of the cutting speed, was observed. In [ 16 , 20 ], the recommended speed of grinding stainless steels is 17.5–25 m/s for roughing and 20–29 m/s for finishing; in [ 21 ], the recommended speed is 10–25 m/s for roughing and 0.5 m/s for finishing. In [ 22 ], identical speeds of 20–35 m/s are recommended for grinding heat-resistant steels, aluminum alloys, and hardened steels.…”

Section: Methodsmentioning

confidence: 99%

Establishing the Relationship between Cutting Speed and Output Parameters in Belt Grinding on Steels, Aluminum and Nickel Alloys: Development of Recommendations

et al. 2021

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This paper presents the research results of one of the main technological parameters of belt grinding, i.e., the cutting speed while machining corrosion- and heat-resistant, structural carbon and structural alloy steels, aluminum, and heat-resistant nickel alloys. Experimental and analytical methods are used to establish the dependence of the output parameters of surface belt grinding on the cutting speed and tool characteristics. An analytical model, considering the physical and mechanical properties of the grinding belt (strength depending on the base and bond; the thermal conductivity; the type of grinding operation) and the machined material, is created to determine the belt grinding speed. The output parameters, such as the arithmetic mean of the surface roughness (Ra) and the material removal rate (MRR) during the belt grinding of steels, heat-resistant and light alloys, have been studied. Based on the empirical dependencies of the belt grinding parameters, the model was developed for the selection and setting of the cutting speed of belt grinding for the aforementioned alloys, taking into account the type of operation, the type of the machined material, and the main characteristics of the sanding belt.

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Section: Methodsmentioning

confidence: 99%

Establishing the Relationship between Cutting Speed and Output Parameters in Belt Grinding on Steels, Aluminum and Nickel Alloys: Development of Recommendations

et al. 2021

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“…Some companies use the method of robotic gripper polishing and abrasive belt grinding to achieve precision grinding of the blade [5]. Wang and Yun [6] researched the robotic path planning of surface grinding by comparing the off-line programming simulation with the experimental result; this method could improve the quality of the blade surface.…”

Section: A Robotic Belt Grinding For Aero-engine Bladementioning

confidence: 99%

Two-Level Static Floatation Tool Used in Belt Grinding for Root Fillet of Titanium Alloy Blade

Xiao

Huang

2019

IEEE Access

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The root fillet of key components in aero-engines, such as the blade, blisk, and blade ring, is the most stress-concentrated area during thermodynamic interactions. The root fillet is constructed with a small curvature radius and variable curvature in different sections. Variable curvature is difficult to achieve with the integrated heat in the grinding process, and the surface quality of the root fillet is therefore greatly influenced. A ''horseshoe nest'' may be created in the high-temperature air environment, which would significantly affect the fatigue life of the key components. Therefore, to solve the problem of precision grinding for a variablecurvature root fillet, a two-level static floatation tool is proposed for belt grinding. First, the system design of the two-level static floatation tool is introduced, and the principle of the two-level static air floating is analyzed based on fluid dynamics. Second, the deformation and stress distribution of the two-level static floatation tool is analyzed when combined with the belt grinding process for a variable-curvature root fillet. Finally, an experiment performed on the root fillet of an aero-engine titanium alloy blade is described. The results show that the surface roughness is less than 0.4 µm, the profile precision errors are less than 5%, the transition is smooth between the plane and the fillet (blade surface to root fillet rabbet), and a longitudinal texture on the blade root fillet is formed. INDEX TERMS Belt grinding, tool, blade, root fillet, surface integrity.

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“…6,7 Belt grinding offers ''flexible grinding'' and ''cold grinding,'' which are widely used in the precision machining of parts that are difficult to machine, such as titanium alloy blades. [8][9][10] However, there is little targeted research characterizing residual stress on the belt grinding surface of titanium alloy. There is no perfect characterization mechanism, making it difficult to predict the residual stress on the grinding surface to effectively guide the titanium alloy grinding process.…”

Section: Introductionmentioning

confidence: 99%

A multi-particle abrasive model for investigation of residual stress in belt grinding of titanium alloys

Xiao

Song

Zhou

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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The titanium alloy blade is a key part of an aero-engine, but its high surface efficiency and precision machining present technical problems. Belt grinding can effectively prolong the fatigue life of the blade and enhance the service performance of the aero-engine. However, the residual stress of the workpiece after belt grinding directly affects its service performance and life. The traditional single particle abrasive model simulation is limited in exploring the influence of grinding process parameters on surface residual stress. In this study, an ABAQUS simulation model of multi-particle belt grinding is established for titanium alloy material, a finite element (FE) simulation is conducted with different technological parameters, and the results are analysed. The critical belt grinding experiment is conducted on thin-walled titanium alloy parts, and the distribution characteristics of surface residual stress after grinding are studied to understand the influence of grinding parameters on the formation of surface residual stress. Comparing the results of the FE simulation and the grinding experiment, the common law of stress change and the prediction model are obtained. The results show that the multi-particle belt grinding simulation is consistent with the belt grinding experiment in terms of the influence of grinding parameters on residual stress. The simulation can serve as a guide in actual belt grinding to some extent. Directions for improving the multi-particle abrasive simulation model are discussed.

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Adaptive belt grinding of gas-turbine blades

Cited by 23 publications

References 0 publications

Establishing the Relationship between Cutting Speed and Output Parameters in Belt Grinding on Steels, Aluminum and Nickel Alloys: Development of Recommendations

Establishing the Relationship between Cutting Speed and Output Parameters in Belt Grinding on Steels, Aluminum and Nickel Alloys: Development of Recommendations

Two-Level Static Floatation Tool Used in Belt Grinding for Root Fillet of Titanium Alloy Blade

A multi-particle abrasive model for investigation of residual stress in belt grinding of titanium alloys

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