CAJ | 학술논문

为提高镀层沉积速度，该文对电喷镀气缸的沉积速度进行多变量工艺参数优化。采用JMP软件对电喷镀进行试验研究，探讨了电压、镀液温度、两极间隙、镀液流速、两极相对运动速度对镀层沉积速度的影响，通过响应面分析和逐步逼近法分析了各影响因子与响应的关系，建立了二次回归数学模型。并利用二次曲面主轴梯度法进行了多变量函数优化，确定了镀层沉积速度的最佳工艺参数：电压15 V，镀液温度72℃，两极间隙1 mm，镀液流速1.2 m/s，两极相对运动速度170 mm/min，此工艺条件下得到的镀层沉积速度为79.13μm/min，约是传统电沉积的130倍，提高了生产效率，并且优化后镀层致密光滑，无气孔，镀层质量优等。研究结果可为高速电镀的实现提供参考。
위제고도층침적속도，해문대전분도기항적침적속도진행다변량공예삼수우화。채용JMP연건대전분도진행시험연구，탐토료전압、도액온도、량겁간극、도액류속、량겁상대운동속도대도층침적속도적영향，통과향응면분석화축보핍근법분석료각영향인자여향응적관계，건립료이차회귀수학모형。병이용이차곡면주축제도법진행료다변량함수우화，학정료도층침적속도적최가공예삼수：전압15 V，도액온도72℃，량겁간극1 mm，도액류속1.2 m/s，량겁상대운동속도170 mm/min，차공예조건하득도적도층침적속도위79.13μm/min，약시전통전침적적130배，제고료생산효솔，병차우화후도층치밀광활，무기공，도층질량우등。연구결과가위고속전도적실현제공삼고。
The cylinder is an extremely important easily wearing part of a tractor engine, whose service life and production cost are directly affected by the wear resistance of the component. With excellent wear resistance, corrosion resistance, and greater hardness, a Ni-P alloy deposited layer can significantly enhance the service life and reliability of the cylinder, and the capability and quality of the tractor engine can be improved. The lower limiting current density of the traditional electrodeposited Ni-P alloy method leads to a lower depositing rate and lower production efficiency. Jet electrodeposition has been developed in recent years, which can significant increase the depositing rate because the jet electrolyte can accelerate the transfer process of the electrodeposition material and augment limiting current density. So jet electrodeposition is a type of high-velocity, selective electrodeposition technique with high deposition current density and high velocity. Furthermore, optimization of the process parameters of jet electrodeposition is the way to further increase the depositing rate. In this paper, technological experimentation is investigated by using a custom design of JMP to optimize process parameters of jet electrodeposition. The JMP software is Six Sigma statistical software developed by SAS, which is a professional statistical analysis tool. The JMP software can be used for processing data and designing of experiments. To the best of our knowledge, there is currently no report about applications of JMP in electrochemical use domestically. Voltage, electrolyte temperature, dipolar space, flow velocity of electrolyte, and dipolar relative velocity are the influence factors, and the depositing rate of deposited layers is the experimental index, and the relationships between the experimental index and the influence factors are analyzed through the response surface analysis method and sub-stepping method. The quadratic regression mathematical models that described the relations between the experimental index and the influence factors were established. The optimal technological parameters for depositing rate of a deposited layer were obtained through conducting a multivariable function optimization by the method of a quadric spindle gradient. The results suggest that JMP software can obtain more accurate optimal values by calculating than by orthogonal test. Voltage, electrolyte temperature, dipolar space, and dipolar relative velocity affect the depositing rate of a deposited layer markedly. The quadratic term of dipolar space have a high-impact on the surface effect of the depositing rate. And furthermore, voltage and flow velocity of the electrolyte, electrolyte temperature and flow velocity of electrolyte, flow velocity of electrolyte, and dipolar relative velocity have interactive effects on the changes of the depositing rate. The quadratic regression mathematical models reach a significant level and the equation has good fitting effects. So the models can be applied to predict the depositing rate of a deposited layer. The response surface methodology obtained the influences of voltage, electrolyte temperature, dipolar space, flow velocity of the electrolyte, and dipolar relative velocity on depositing rate of a deposited layer. And the optimal parameters are as follow:voltage of 15V, electrolyte temperature of 72℃, dipolar space of 1mm, flow velocity of electrolyte of 1.2 m/s, and dipolar relative velocity of 170 mm/min. Under these conditions, the depositing rate of a deposited layer is 79.13μm/min and the quality of the deposited layer is better. The depositing rate of jet electrodeposition is about 130 times that of a traditional electrodeposition, and use of jet electrodeposition improves production efficiency. It can help to promote the development of high-speed plating.