【摘要】：目的模擬研究噴丸除銹工藝的過程和處理效果,為優(yōu)化工藝參數(shù)提供指引。方法以建筑用低碳鋼及其銹蝕產(chǎn)物為研究對(duì)象,利用單元去除技術(shù)和周期性胞元方法建立有限元模型,模擬多個(gè)丸粒隨機(jī)撞擊和氧化層去除的過程,并與文獻(xiàn)中的實(shí)驗(yàn)數(shù)據(jù)進(jìn)行了對(duì)比驗(yàn)證,從氧化層去除速率、去除后的表面粗糙度和表層殘余應(yīng)力三個(gè)角度分析噴丸除銹工藝的效果。結(jié)果提高除銹效果可從增大丸粒入射速度和丸粒直徑來入手,氧化層越厚噴丸除銹處理的時(shí)間越長(zhǎng)。結(jié)論噴丸除銹工藝能有效去除銹蝕層,同時(shí)改善表面粗糙度和引入殘余壓應(yīng)力,具有較廣的應(yīng)用前景。有限元模擬能為該工藝優(yōu)化提供便捷的研究途徑。
[Abstract]:Objective to simulate and study the process and effect of peening rust removal in order to provide guidance for optimizing technological parameters. Methods A finite element model of low carbon steel and its corrosion products for building was established by means of unit removal technique and periodic cell method. The process of random impact and oxide removal of several pellets was simulated. Compared with the experimental data in the literature, the effect of blast peening on rust removal is analyzed from three aspects: oxidation removal rate, surface roughness and residual stress. Results increasing the incidence velocity and diameter of pellets can be used to improve the rust removal effect. The thicker the oxide layer, the longer the time of peening rust removal. Conclusion shot peening process can effectively remove rust layer, improve surface roughness and introduce residual compressive stress, which has a wide application prospect. [WT5 "HZ] conclusion\? The finite element simulation can provide a convenient research way for the optimization of the process.
【作者單位】： 同濟(jì)大學(xué)航空航天與力學(xué)學(xué)院;
【基金】：上海市教委科研創(chuàng)新項(xiàng)目(15zz018) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(20143401)~~
【分類號(hào)】：TG178

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