Acquiring method of antifatigue grinding process parameter domains of high temperature alloy component

A technology of process parameters and superalloys, applied in the direction of grinding machine parts, metal processing equipment, grinding/polishing equipment, etc., can solve problems such as poor surface integrity, fatigue, etc., achieve accurate relationship model, design and analysis methods reliable results

Active Publication Date: 2017-06-27
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for obtaining the anti-fatigue grinding process parameter domain of superallo

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  • Acquiring method of antifatigue grinding process parameter domains of high temperature alloy component
  • Acquiring method of antifatigue grinding process parameter domains of high temperature alloy component
  • Acquiring method of antifatigue grinding process parameter domains of high temperature alloy component

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[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] The invention discloses a method for obtaining an anti-fatigue grinding process parameter domain of a superalloy component, comprising the following steps:

[0052] Step 1. According to the aviation manufacturing engineering manual, experience or literature, establish the grinding process parameter domain C of superalloy components 1 , in this embodiment, the superalloy GH4169DA is taken as an example, the grinding process parameter domain C 1 including wheel speed v s (unit is m / s), member velocity v w (unit is m / min), longitudinal feed a f (unit: mm / r), radial feed a p (in mm), that is, C 1 [v s ,v w ,a f ,a p ], see Table 1 for the specific parameter fields:

[0053]

[0054] Table 1

[0055] According to the superalloy GH4169DA component grinding process parameter domain C 1 Carry out single factor test, according to...

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Abstract

The invention discloses an acquiring method of antifatigue grinding process parameter domains of a high temperature alloy component. The method comprises the following steps that firstly, the grinding process parameter domain C1 of the high temperature alloy component is established, and a single factor experiment is conducted according to the C1, and the grinding process parameter domain C2 of the high temperature alloy component is obtained through the single factor experiment; secondly, an orthogonal experiment is conducted according to the C2 obtained in the step one, and a relational expression between grinding process parameter and the component surface integrity characteristic is established; thirdly, a fatigue component experiment is conducted according to the C2 obtained in the step one, and a relational expression between the component surface integrity and the fatigue life is established; and fourthly, the antifatigue grinding process parameter domain C3 of the high temperature alloy component is obtained according to the relational expression between the grinding process parameter and the component surface integrity characteristic obtained in the step two and the relational expression between the component surface integrity and the fatigue life. According to the method, by establishing relation between the grinding process parameter and the surface integrity characteristic and the relation between the surface integrity characteristic and the fatigue life, the antifatigue grinding process parameter domains are obtained.

Description

【Technical field】 [0001] The invention belongs to the technical field of mechanical processing of metal materials, and in particular relates to a method for obtaining an anti-fatigue grinding process parameter domain of a superalloy component. 【Background technique】 [0002] Due to its excellent high-temperature strength, thermal stability and thermal fatigue resistance, superalloys are widely used in the manufacture of aero-engine hot-end components. The final service surface of superalloy components is the ground surface or close to the ground surface, and the integrity of the ground surface directly affects the service performance of the component. However, the grinding processability of superalloys is poor, the grinding force is large, the grinding temperature is high, the grinding wheel is easy to clog and wear, and the work hardening is serious. These problems will affect the surface integrity of the grinding process, thereby affecting the aero-engine components. fati...

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Application Information

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IPC IPC(8): B24B1/00B24B49/00G06F19/00
CPCB24B1/00B24B49/00G16Z99/00
Inventor 姚倡锋张定华任军学田荣鑫谭靓武导侠周征张吉银
Owner NORTHWESTERN POLYTECHNICAL UNIV
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