本文選題：中空激光光內(nèi)送粉 + 變姿態(tài)��； 參考：《紅外與激光工程》2017年09期

【摘要】：基于中空激光光內(nèi)送粉技術(shù),運(yùn)用實(shí)時(shí)變姿態(tài)方法和法向分層方法,進(jìn)行了具有不等高熔道特征的扇形結(jié)構(gòu)件成形研究。分析了熔道層高與掃描速度之間的對應(yīng)關(guān)系,結(jié)合不等高熔道的幾何模型和熔道層高與掃描速度之間的關(guān)系,采用分段變速的方法熔覆出了不等高熔道。在此基礎(chǔ)上進(jìn)行多道不等高熔道堆積,成形出了扇形薄壁墻結(jié)構(gòu)。分析表明,所獲得成形件尺寸精度較高,相對尺寸誤差控制在7%以內(nèi);成形件各處顯微組織差異較小,組織細(xì)密、均勻。
[Abstract]:Based on the technology of hollow-laser optical internal powder feeding, using real-time attitude changing method and normal stratification method, the forming of fan-shaped structural parts with different high melting channel characteristics was studied.The relationship between the height of the fusion channel and the scanning velocity is analyzed. Based on the geometric model of the non-uniform fusion channel and the relationship between the height of the fusion channel and the scanning velocity, the variable velocity method is used to fuse the non-uniform fusion channel.On the basis of this, the multi-channel non-uniform fusion channel accumulation is carried out, and the fan-shaped thin-wall structure is formed.The analysis shows that the dimension accuracy of the formed parts is high, the relative dimension error is controlled within 7%, and the microstructure difference is small, the microstructure is fine and uniform.
【作者單位】： 蘇州大學(xué)機(jī)電工程學(xué)院;西安交通大學(xué)機(jī)械工程學(xué)院;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃(2016YFB1100300) 江蘇省重點(diǎn)研發(fā)項(xiàng)目(BE2015067)
【分類號(hào)】：TN249
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本文編號(hào)：1754947