Very good speed characteristic of high speed mold closing and low pressure mold protection. 高速闭模、低压模保速度特性甚佳。
A two-phase flow model for simulating air entrapment during mold filling of high pressure die casting process 应用两相流模型模拟压铸充型过程的卷气现象
Process window analysis, another part of mold flow analysis, examines melt temperature, mold temperature, injection pressure, and fill times. 加工窗口分析、它零件的模流分析,检查熔体温度、具温度、塑压力和充填时间。
Study on Material of Ductile Cast Iron and Numerical Simulation of Lost Foam Casting for Large-size Punching Dies; A TWO-PHASE FLOW MODEL FOR SIMULATING AIR ENTRAPMENT DURING MOLD FILLING OF HIGH PRESSURE DIE CASTING PROCESS 中大型冲压件模具球墨铸铁材料及消失模铸造数值模拟研究应用两相流模型模拟压铸充型过程的卷气现象
A study of optimization is made to the mold filling simulation on low pressure die casting for automobile wheel casting. 以低压铸造汽车轮毂为研究对象,对铸造充型过程数值模拟算法进行了研究改进。
The results showed that the new perform mold made from the old mold could control the pressure of the perform, so that the perform could have exact dimension and good quality. 结果表明,在旧预成型模具的基础上改进的新型模具能精确控制预成型压力,从而可以保证预成型体的尺寸精度和质量。
Design of the Cold Stamping Mold of Pressure Vessel's End-plate 压力容器封头复合模具设计
The semisolid squeeze casting is a new processing technology assembling the semisolid processing and the squeeze casting in a body. In this process the semisolid alloy with rheologic property is filled into mold and then solidified into form under pressure. 半固态挤压铸造是集半固态加工与挤压铸造为一体,利用半固态浆料的流变性能进行充型并在压力作用下凝固成形的一种材料成形新技术。
Study of Mold Filling Simulation on Low Pressure Die Casting for Automobile Wheel Casting 低压铸造汽车轮毂充型过程数值模拟研究
Pressure& Mold Temperature Automatic Control System of Low Pressure Die Casting 低压铸造压力和模温自动控制系统
The bursting pressure test proves that the air spring made from this rubber mold has a pressure limit of 2.3 MPa. 用该模具生产的空气弹簧,经爆破极限气压力试验达2.3MPa,符合设计要求。该方案还可用于种类多、小批量的特殊用途的空气弹簧制造。
Along with the appearance of the new type material, mold steel and big tonnage pressure machine, cold extrusion technics is becoming the developing way in modern machining of middle or small parts. 随着新型挤压材料、模具新钢种和大吨位压力机的出现,冷锻生产工艺技术已逐渐成为中小锻件精化生产的发展方向。
In this paper, based on the analyze of technology requirement, a pressure and mold temperature automatic control system of low pressure die casting for automobile wheel has been developed and its composition, working principle and characteristics are described. 在分析轮毂低压铸造工艺的基础上,研制出汽车轮毂低压铸造压力和模具温度自动控制系统,介绍了该系统的组成、工作原理和特点。
FEM takes account of rheology, mold temperature, injection pressure, etc., with the method we can get an accurate analysis result. 该方法可以综合考虑熔体的流变特性、模具温度、注塑压力等多方面的影响,所以分析比较精确。
In order to improve the computing efficiency of mold filling simulation of low pressure die casting process, a simplified model for the mold filling simulation of the process was proposed according to the mold filling characteristics of the process. 为了提高低压铸造充型过程数值模拟的计算效率,根据低压铸造中充型的特点,提出了一种简化的充型过程数值模拟的数学模型。
Study on the Simplified Model for the Mold Filling Simulation of Low Pressure Die Casting Process 低压铸造过程充型模拟简化模型的研究
The development status of dental cast titanium system and investment mold materials is introduced. The cast structure of surface reacted layer and some casting technological problems including mold temperature, cast pressure are also discussed. 对目前牙科铸钛系统,包埋材料,铸件表面反应层结构以及铸造工艺如铸模温度、铸造压力等的研究及发展现状进行了综合介绍。
Mold filling and solidification simulation of low pressure die casting aluminum wheel casting 低压铸造铝合金轮毂充型与凝固模拟
On the other hand, those factors influencing on the PTC effect of the composite are obvious in mold pressing temperature, mold pressing time and mold pressing pressure, but influence on PTC intensity of the composite is low in the cooling time. 研究了模压成型过程中模压温度、模压时间、模压压力以及冷却时间四个因素对样品性能的影响。
Study on Solidification of Magnesium Alloy in Plaster Mold under Pressure and Vacuum Pouring Conditions 真空浇注条件下镁合金石膏型压力凝固的研究
The applications of the dies for investment, ceramic mold, plaster mold and pressure precision castings are described. 叙述了熔模精铸模具、陶瓷型精铸模具、石膏型精铸模具和加压精铸模具的应用情况。
Study on bag mold technique of vacuum pressure impregnation for HT-7U poloidal magnet coils HT-7U极向场磁体线圈真空压力浸渍袋模工艺的研究
Mold temperature, melt temperature, injection pressure, injection time, packing pressure, packing time and cooling time were optimized by using the signal-to-noise ratio, range analysis and variance analysis methods, then optimal injection molding process parameters were determined. 结合信噪比、极差分析和方差分析方法优化了模具温度、熔体温度、注塑压力、注塑时间、保压压力、保压时间和冷却时间等工艺参数,获得了最优工艺参数组合。
As a molten state the plastic materials after heating was injected into the pre-designed closed mold cavity by the injection molding pressure and speed, then cooling get the required products which is called injection molding. 注塑成型是利用塑胶原料受热后成为熔融状态流体,然后利用注射成型机的压力、速度,将熔融塑胶注射入预先设计好的紧闭模腔内,经过冷却后得到所需制品的过程。
In the forming process of injection mould the main force in the mold plastic is melt pressure. 在成型过程中注塑模主要受力为型腔内塑料熔体的压力。
The multiple uniform design of experiment is applied to arrange sample points, taking melt temperature, mold temperature and packing pressure as inputs and taking warpage, air-traps size and weld-lines length as outputs, RBF neural networks are established. 运用多次均匀设计布置采样点,以熔体温度、模具温度和保压压力作为网络输入量,翘曲量、熔接痕长度和气泡面积大小作为输出量,构建三个精度高的RBF神经网络。
Then, a Box-Behnken design by using Design-expert software was conducted, we selected mold temperature, melt temperature, holding pressure and dwell time as experimental factors, selected warpage and shrinkage as target variable. 其次,运用Design-expert软件设计了Box-behnken试验,选取模具温度、熔体温度、保压压力、保压时间作为实验因素,以翘曲变形和体积收缩率作为目标变量。
Through the single factor experiment, the influence of the injection pressure, injection rate, melt temperature, mold temperature, packing pressure and packing time on the filling rate of micro cavities was studied. 同样采用单因素实验方法,系统地研究了注射压力、注射速度、熔体温度、模具温度、保压压力、保压时间6个工艺参数对微型齿轮型腔填充率的影响。
Through analysis and comparison of several molding process, as well as several characteristics of suppressing mold, while using two-way pressure, pull down the type stripping method to suppress the hole with thin ring-type seal ring. 通过对几种成型工艺的分析比较,以及几种压制成型模具的特性分析,采用双向同时加压,拉下式脱模的方法,压制带内孔薄圆环型密封环,设备简单,操作方便,压坯密度均匀。