共查询到11条相似文献,搜索用时 78 毫秒
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V型真空干燥制粒机的性能和工艺试验 总被引:1,自引:0,他引:1
剖析了美国P-K公司V型真空干燥制粒机的主要机构设计和独特的性能,分析了在美国P-K公司试验室制取的混 产的性能,力图从理论和实践两个方面来验证该类设备在我国硬质合金行业上使用的可行性,从而为硬质合金行业制粉工序的更新改造提供可靠依据。 相似文献
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为优化304不锈钢激光切割工艺参数,基于响应面法设计实验,建立了2 mm厚的304不锈钢激光切割质量指标预测模型,运用方差分析法检验了模型的可靠性.研究了工艺参数对激光切割质量指标的影响规律,并以切缝宽度、挂渣量、表面粗糙度最小为目标对工艺参数进行了优化.实验结果表明:挂渣量随激光功率、切割速度的增加而增加,随辅助气体... 相似文献
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以四叶搅拌喷吹复合脱硫搅拌器为研究对象,通过调整搅拌转速、插入深度和喷嘴通气流量等工艺参数,优化搅拌流场速度。基于响应面法进行试验方案设计,获得了对流场速度具有显著影响的因素,并采用正交试验交互作用因素验证了响应面模型的正确性。试验模拟结果表明:脱硫搅拌器搅拌流场最优的工艺参数为搅拌转速170 r/min、插入深度400 mm、喷嘴通气流量4.408 m3/h,此时模型预测流场速度值为0.536 m/s;插入深度较搅拌转速和喷嘴通气流量对搅拌流场速度有更显著影响。 相似文献
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为解决电阻点焊不锈钢车体表面质量差、密闭性差等问题,采用二次回归旋转设计试验方案,基于响应面法建立了不锈钢车体激光焊接工艺参数(激光功率、焊接速度、离焦量)与预测响应值(熔深、熔宽、接头剪切拉伸载荷)之间的数学模型,能够根据车体表面质量和接头强度的要求优选焊接工艺参数.并通过优化激光焊接工艺参数来预测激光搭接焊接头的熔深、熔宽以及接头的剪切拉伸载荷,实现焊缝成形与接头强度的最佳组合,为改善不锈钢车体焊接表面质量提供了新的工艺途径. 相似文献
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针对螺旋伞齿在精锻时齿形成形质量差、成形载荷过大等缺陷,以某汽车变速器螺旋伞齿轮为研究对象,建立了以坯料始锻温度、摩擦系数以及压力机速度为设计变量,以最大成形载荷和终锻填充率为目标函数的二次多项式响应面模型,结合数值模拟方法以及Matlab优化工具箱,得到了优化的成形工艺参数为:坯料初始温度1000℃、摩擦系数0.3和摩擦压力机的成形速度200 mm·s-1.最后基于优化后的工艺参数,通过工艺试验验证了该模型的有效性,试验获得的螺旋伞齿齿形饱满,设备成形载荷满足要求. 相似文献
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This article deals with the optimization of process parameters for friction welding of Incoloy 800 H rod and compares the results obtained by response surface methodology(RSM) and artificial neural network(ANN).The experiments were carried out on the basis of a five-level,four-variable central composite design.The output parameters were the tensile strength and burn-off length(BOL).They were considered as a function of four independent input variables,namely heating pressure(HP),heating time,upsetting pressure(UP),and upsetting time.The RSM results showed that the quadratic polynomial model depicted the interconnection between individual element and response.For optimizing the process parameters,ANN analysis was used,and the optimal configuration of the ANN model was found to be 4–9–2.For modeling aspect,a requisite trained multilayer perceptron neural network was rooted,and a quick propagation training algorithm was used to train ANN.The purpose of optimization was to decide the maximum tensile strength and minimum burn-off length of the welded joint which was done by varying the friction welding process variables.The order of importance of input parameters for friction welding of Incoloy 800 H was HP [ UP [ N [ BOL.After predicting the model using RSM and ANN,a comparison was made for predicting the effectiveness of two methodologies.By analyzing the results,it was observed that as compared to RSM,ANN model was more specific. 相似文献