Method for obtaining high temperature alloy efficient low-stress grinding process parameters

A technology of process parameters and high-temperature alloys, applied in the field of precision and ultra-precision grinding, can solve the problems of large residual stress on the surface, low grinding efficiency, etc., to meet the requirements of high reliability and long life, to prevent the occurrence of grinding cracks, The effect of improving grinding efficiency and grinding accuracy

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

[0007] The purpose of the present invention is to provide a method for obtaining high-efficiency and low-stress grinding process parameters of high-temperature alloys, so as to solve the problems of large surface residual stress and low grinding efficiency in the grinding process of existing high-temperature alloy components

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  • Method for obtaining high temperature alloy efficient low-stress grinding process parameters
  • Method for obtaining high temperature alloy efficient low-stress grinding process parameters
  • Method for obtaining high temperature alloy efficient low-stress grinding process parameters

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] The invention discloses a method for obtaining high-efficiency and low-stress grinding process parameters of superalloys, such as figure 1 As shown, the specific steps are as follows:

[0049] Step 1. Establish the superalloy surface integrity grinding process parameter domain, conduct orthogonal experiments according to the grinding process parameters in it, and establish the relationship between the superalloy surface integrity grinding process parameters and surface integrity characteristics, the specific method as follows:

[0050] Step 1.1: According to the aviation manufacturing engineering manual, experience or literature, formulate the surface integrity grinding process parameter domain of the superalloy GH4169DA, wherein the grinding method adopts cylindrical grinding, and the grinding wheel type adopts single crystal corundu...

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Abstract

The invention discloses a method for obtaining high temperature alloy efficient low-stress grinding process parameters. The method is characterized by comprising the steps that 1, a high temperature alloy surface integrity grinding process parameter domain and a relation between high temperature alloy surface integrity grinding process parameters and surface integrity features are established; 2, an objective function is established, linear processing is performed, and high temperature alloy grinding process parameter constraint conditions are established; 3, a high temperature alloy efficient low-stress grinding process parameter optimization model is established, and high temperature alloy efficient low-stress grinding process parameters are obtained; and 4, the high temperature alloy efficient low-stress grinding process parameters are verified to obtain final high temperature alloy efficient low-stress grinding process parameters. Through the method, the problems that in the existing high temperature alloy component grinding process, surface residual stress is large, and grinding efficiency is low are solved.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of precision and ultra-precision grinding, and in particular relates to a method for obtaining process parameters of high-temperature alloy high-efficiency and low-stress grinding. [0003] 【Background technique】 [0004] Due to its excellent high-temperature strength, oxidation resistance, creep resistance, corrosion resistance and good fatigue properties, superalloys have become the materials of choice for most of the hot end parts of aero-engines. In advanced aero-engines, the amount of high-temperature alloys accounts for 40% to 60%. However, while having the above advantages, due to the large grinding force and high grinding temperature during the grinding process, the grinding wheel is prone to adhesive wear and diffusion wear, and severe work hardening, etc., making it a veritable difficult-to-machine material. [0005] At present, the known grinding processes of superalloys mainly include: s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50B24B1/00
CPCB24B1/00G06F30/17G06F30/20G06F2111/04
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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