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Application of JM-SPC program for statistical control of foundry production processes
Foundry production process Statistical control Control chart
2011/3/15
A computer program written by author in Delphi for statistical control of production processes is presented. The JM-SPC program can be used for both the variable valued and the attribute valued data t...
The AHP method used in assessment of foundry enterprise position
Analysis of foundry position AHP method Comparative assessment Weighted sum of evaluations
2011/3/15
Complex assessment of activity of a selected foundry enterprise based on a modern AHP (Analytic Hierarchy Process) method has been presented.
Evolutionary based system for production scheduling in foundry
Application of information technology to the foundry industry Scheduling Evolutionary algorithms
2011/3/15
This work presents a development of a capable-to-promise system for companies that operate under the hybrid make-to-order and maketo-stock strategy in a lot-sizing and flowshop environment.
Rationalization of foundry processes on the basis of simulation experiment
Application of information technology to the foundry industry Automation and robotics in foundry
2011/3/15
The paper presents results of research obtained on the basis of simulation experiment, whose aim was to analyze the performance of cast iron foundry.
Testing of heating and cooling process of ADI cast iron with use of ATND method
Austempered ductile iron Heat treatment ATD ATND
2011/3/15
ADI (Austempered Ductile Iron) cast iron, owing to its unique combination of high tensile strength and abrasion resistance with very good plasticity, founds implementation in many branches of industry...
铸铁件凝固过程中自然对流引起的宏观偏析模拟
宏观偏析 自然对流 数值模拟
2008/4/25
使用ＳＩＭＰＬＥＲ算法, 基于体积平均的描述对铸件凝固宏观传输过程的温度场、溶质场、流场耦合模型进行了求解. 应用此模型对铸钢件凝固过程进行了模拟, 考察了自然对流对传热、传质的影响. 结果表明, 自然对流显著改变了糊状区等温经的形状与溶质浓度的分布, 此模型定量地预测了铸件的宏观偏析, 采用Ｓｕｚｕｋｉ判据, 计算出了Ａ型偏析可能出现的位置.
铸铁水平连铸中圆坯凝固过程的数值模拟
水平连铸 圆坯 凝固过程 数值模拟
2008/4/25
将铸铁水平连铸中圆坯凝固过程的整个传热系统作为模拟对象,采用自由热收缩模型计算铸坯与结晶器的界面传热系数,从非稳态传热的角度并按照柱坐标系中二维传热的方式进行铸坯凝固过程的数值模拟在数值计算中,采用静、动坐标系相结合的方法,使铸坯传热的控制方程得以简化且便于耦合处理结晶器与铸坯的温度场计算由此确立的模拟方法可用于模拟不同尺寸的圆坯在各种工艺条件下的凝固过程
An establish attempt of reasons of machining splinter formation in AC44200 alloy high pressure die castings
Foundry production process Al-Si high pressure die casting
2011/3/15
A problem of splinter formation during machining the AC44200 alloy high pressure die casting has been experimental investigated. In order to establish the reason of this occurrence a set of 200 high p...
Methodological aspects of systemic designing of foundry plants
Foundry plant design System Systemic approach
2011/3/15
An approach is attempted to systematise the systemic research. A set of hypotheses are formulated, defining how a conceptual design of a foundry plant should be developed and improved when it is inves...
Selection of Metal Casting Processes: A Fuzzy Approach
Metal Casting Process Selection Fuzzy logic
2010/1/15
Choosing the right manufacturing process for making a component is an important consideration at the early stages of
design. In metal casting process, there are over forty different processes with di...
Analysis of quality and cost of FeSiMg treatment master alloy vs cored wire in production of ductile cast iron
Ductile cast iron Vermicular cast iron PE Method
2011/3/15
The results of studies on the use of FeSi5%Mg magnesium alloy in modern cored wire injection method for production of nodular and vermicular graphite cast irons were described. The injection of Mg cor...
Performance tests of an abrasive cut-off systems for the finishing of high-precision casts
Casting separation Finishing High-precision casts
2011/3/15
The paper summarizes the performance data of a newly designed and engineered grinding and cut-off system. The machine is used for separation of models manufactured by the investment casting method.
Signalling a foundry mould filling degree with infrared sensors
Infrared sensors Foundry mould Filling degree
2011/3/15
A contactless method of measuring a foundry mould filling degree in course of its pouring with liquid metal is suggested. The concept is based on infrared radiation of molten metal appearing in ventin...
基于DSP的拖拉机电液转向控制系统
拖拉机 转向控制系统 设计 试验
2008/3/13
针对拖拉机的全液压转向系设计了基于TMS320F2812 DSP的电液转向控制系统，硬件部分包括DSP芯片及PWM电控器等接口电路，软件部分设计了带非线性补偿的PID控制算法，选用比例电磁换向阀、角位移传感器构建了试验平台，进行了算法参数确定试验和导向信号跟踪转向试验。结果表明控制系统的转向角误差小于7%，平均滞后时间为0.15s，能为自动导向提供理论基础。