Acquisition method of parameter domain of anti-fatigue grinding technology of ultrahigh-strength steel member

A technology of ultra-high-strength steel and process parameters, applied in the direction of testing wear resistance, can solve the problems of low fatigue performance and poor surface integrity, and achieve the effect of accurate relationship model and reliable design and analysis methods

Active Publication Date: 2017-06-20
NORTHWESTERN POLYTECHNICAL UNIV
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[0005] The purpose of the present invention is to provide a method for obtaining the anti-fatigue grinding process parameter domain of ultra-high-strength steel compon

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  • Acquisition method of parameter domain of anti-fatigue grinding technology of ultrahigh-strength steel member
  • Acquisition method of parameter domain of anti-fatigue grinding technology of ultrahigh-strength steel member
  • Acquisition method of parameter domain of anti-fatigue grinding technology of ultrahigh-strength steel member

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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 an anti-fatigue grinding process parameter domain of an ultra-high-strength steel component, which includes the following steps:

[0049] Step 1. According to the aviation manufacturing engineering manual, experience or literature, establish the grinding process parameter domain C of the ultra-high strength steel Aermet100 component 1 , where the ultra-high-strength steel Aermet100 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 ], its specific parameters refer to Table 1:

[0050]

[0051] Table 1

[0052] Step 1.1, through the single factor test method, according to the grinding process parameter domain C of the ul...

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Abstract

The invention discloses an acquisition method of a parameter domain of an anti-fatigue grinding technology of an ultrahigh-strength steel member. The acquisition method comprises the following steps: step 1, establishing a parameter domain C1 of a grinding technology of the ultrahigh-strength steel member; machining a plurality of first testing members according to the C1, and obtaining a parameter domain C2 of the grinding technology of the ultrahigh-strength steel member according to a parameter and surface roughness relation curve; step 2, carrying out an orthogonal test according to the C2 in the step 1, machining a plurality of second testing members and establishing a first relational expression; step 3, machining according to the C2 to obtain a plurality of groups of third testing members and measuring a plurality of groups of surface roughness values, surface microhardness values, surface residual stress values and fatigue life values and establishing a second relational expression; step 4, obtaining a parameter domain C3 of the anti-fatigue grinding technology of the ultrahigh-strength steel member according to the first relational expression in the step 2 and the second relational expression in the step 3. According to the acquisition method disclosed by the invention, a single-factor method and an orthogonal method are used for carrying out test design, and designing and analyzing methods are reliable.

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 an ultra-high-strength steel component. 【Background technique】 [0002] Ultra-high-strength steel has the characteristics of ultra-fine, ultra-clean, ultra-homogeneous structure and composition, as well as ultra-high strength and ultra-high toughness. As a secondary hardened ultra-high strength steel, Aermet100 has outstanding comprehensive properties: high strength, high hardness, high fracture toughness and ductility, excellent fatigue resistance and stress corrosion resistance. attention of foreign researchers. At present, it has been used as the landing gear material of the American F-22 fighter jet and some structural materials on the RAH-66 that require good bulletproof. Due to its good comprehensive performance, Aeremt100 steel is widely used in the ...

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Application Information

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IPC IPC(8): G01N3/56
CPCG01N3/56
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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