本文選題：連桿襯套 + 強(qiáng)力旋壓　； 參考：《鍛壓技術(shù)》2015年04期

【摘要】：連桿襯套大多采用強(qiáng)力旋壓成形工藝,其工藝參數(shù)多而復(fù)雜,而且工藝參數(shù)耦合在一起影響著連桿襯套的力學(xué)性能。為了揭示工藝參數(shù)對連桿襯套力學(xué)性能的影響規(guī)律,應(yīng)用Design-Expert 8.0軟件對連桿襯套強(qiáng)力旋壓成形工藝進(jìn)行數(shù)值模擬,基于響應(yīng)曲面設(shè)計(jì)法對連桿襯套在強(qiáng)力旋壓成形中的減薄率、進(jìn)給比和熱處理溫度3個(gè)主要工藝參數(shù)進(jìn)行優(yōu)化設(shè)計(jì)。將經(jīng)過強(qiáng)力旋壓后的連桿襯套抗拉強(qiáng)度作為優(yōu)化目標(biāo)響應(yīng)值,采用三元二次回歸方程作為軟件分析的數(shù)學(xué)模型。試驗(yàn)數(shù)據(jù)及軟件分析結(jié)果表明,當(dāng)抗拉強(qiáng)度在605~645 MPa時(shí)連桿襯套的力學(xué)性能均能滿足產(chǎn)品圖紙要求。連桿襯套強(qiáng)力旋壓工藝參數(shù)的優(yōu)化組合為:減薄率30%、進(jìn)給比0.3 mm·r-1、熱處理溫度275℃。
[Abstract]:Most of the connecting rod bushing adopt the strong spinning forming process, the process parameters are many and complex, and the process parameters coupled together affect the mechanical properties of the connecting rod bushing.In order to reveal the influence of process parameters on the mechanical properties of connecting rod bushing, Design-Expert 8.0 software is used to simulate the strong spinning forming process of connecting rod bushing. Based on the response surface design method, the thinning rate of connecting rod bushing in strong spinning forming is reduced.The feed ratio and heat treatment temperature were optimized.The tensile strength of the connecting rod bushing after strong spinning is taken as the response value of the optimized target, and the ternary quadratic regression equation is used as the mathematical model of the software analysis.The test data and software analysis results show that the mechanical properties of the connecting rod bushing can meet the requirements of the product drawing when the tensile strength is 605 ~ 645 MPa.The optimum combination of the technological parameters of strong spinning of connecting rod bushing is as follows: thinning ratio 30, feed ratio 0.3 mm r -1, heat treatment temperature 275 鈩，

本文編號：1772972