Method for obtaining high-efficiency low-stress grinding process parameters of ultra-high-strength steel
A technology of ultra-high-strength steel and process parameters, which is applied in the field of precision and ultra-precision grinding, can solve the problems of large surface residual stress and low grinding efficiency, and achieve high reliability and long life, and prevent grinding cracks Generate and analyze method-reliable results
Active Publication Date: 2017-06-20
NORTHWESTERN POLYTECHNICAL UNIV
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[0004] The purpose of the present invention is to provide a method for obtaining process parameters of high-efficiency and low-stress grinding of ultra-high-strength steel, so as to solve the problems of large surface residual stress and low grinding efficiency in the grinding process of existing ultra-high-strength steel components
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[0040] The patent of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] The invention discloses a method for obtaining process parameters of high-efficiency and low-stress grinding of ultra-high-strength steel, such as figure 1 As shown, the specific steps are as follows:
[0042] Step 1. Establish the ultra-high-strength steel surface integrity grinding process parameter domain, and conduct an orthogonal test to establish the relationship between the ultra-high-strength steel surface integrity grinding process parameters and surface integrity characteristics through the orthogonal test. The specific steps as follows:
[0043] Step 1.1: According to the aviation manufacturing engineering manual, experience or literature, formulate the grinding process parameter domain of ultra-high-strength steel Aermet100 surface integrity, where the grinding method adopts cylindrical grinding, the type of ...
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Abstract
The invention discloses a method for obtaining high-efficiency low-stress grinding process parameters of ultra-high-strength steel. The method comprises the following steps of: step 1, establishing a surface integrity grinding process parameter domain of the ultra-high-strength steel, performing an orthogonal test, and establishing a relational expression of surface integrity grinding process parameters of the ultra-high-strength steel and surface integrity characteristics through the orthogonal test; step 2, establishing an objective function, performing linear treatment, and establishing constraint conditions for the relational expression of the grinding process parameter domain and the characteristics, which are established in the step 1; step 3, establishing a surface integrity high-efficiency low-stress grinding process parameter optimization model of the ultra-high-strength steel according to the objective function and the constraint conditions, which are established in the step 2, and performing solving to obtain the high-efficiency low-stress grinding process parameters of the ultra-high-strength steel; and step 4, verifying the grinding process parameters obtained in the step 3 to obtain the final high-efficiency low-stress grinding process parameters of the ultra-high-strength steel. Through the adoption of the method disclosed by the invention, during grinding of a ultra-high-strength steel component, residual stress on surfaces is small, and grinding efficiency is high.
Description
【Technical field】 [0001] 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-efficiency and low-stress grinding of ultra-high-strength steel. 【Background technique】 [0002] Ultra-high-strength steel has high strength and hardness, but also has good toughness and plasticity. From the perspective of mechanical characteristics, ultra-high-strength steel has a high yield stress and can withstand greater loads under the same deformation conditions. Can also absorb more energy. Aermet100 is a high-strength, high-toughness, high-alloy ultra-high-strength steel with excellent resistance to stress corrosion cracking and fatigue resistance. It is widely used in the manufacture of aircraft landing gear and gas turbines because of its excellent comprehensive mechanical properties. Important strong structural components in the aviation and aerospace industries such as engi...
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IPC IPC(8): B24B1/00
CPCB24B1/00
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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