A new technique to implement aluminum isothermal/ equipressure extrusion technology& Research on technology application of gradient water-cooling for hot aluminum billet 一种实现铝材等温/等压挤压工艺的新技术&铝材热坯料梯度水冷工艺应用研究
The key technique-simulated isothermal extrusion has been developed for purpose of higher productive efficiency and quality of aluminum profiles. 为了提高铝挤压制品的质量和产量,提出了模拟等温挤压控制。
Simulation and Optimization of Globoidal Cam Isothermal Extrusion Forming by 3D Rigid-Visco-Plastic FEM 弧面凸轮等温挤压成形刚粘塑性三维有限元模拟与优化
Adopting the isothermal extrusion process, the extruding temperature was380 ℃. 采用等温挤压工艺,成形温度为380℃。
Isothermal Extrusion of Aluminum Profiles 铝型材等温挤压技术综述
The focus is to design the ram velocity by using commercial finite element program. Differences in terms of load, temperature and subgrain size histories are compared between the isothermal extrusion and the normal extrusion. 研究了如何使用商用有限元软件去设计推杆速度曲线,并比较等温挤压工艺和常规挤压工艺在挤压载荷、温度以及亚晶粒尺寸分布等方面的不同。
A Study on Isothermal Extrusion of Aluminium Rod 铝棒材等温挤压技术的研究
In the isothermal extrusion process, the deformation temperature, strain speed and amount of deformation were decisive process parameters. The methods to prevent the phenomenon of eccentricity, sticking-to-die and sunken end face were discussed from the aspects of process and die structure. 变形温度、变形速度及变形程度是其决定性工艺参数,合适的模具结构和适当的工艺过程控制能有效地避免锻件端面凹陷、偏心及抱模现象。
A Technique of Isothermal Extrusion Pre-forming and Optimization of Mould Structure for Globoidal Indexing Cams Parts 弧面凸轮等温挤压预成形工艺与模具结构优化
The mathematic model of deformation resistance of this material is set up according to regressive method, which provided basic gist for choosing technological parameter of isothermal extrusion formation. 运用回归方法得出了该材料变形抗力的数学模型,从而为等温挤压成形工艺参数的选择提供了基本依据。
The results show that reasonable speed criterion will realize approximately isothermal extrusion. 而对变速挤压的模拟则说明,通过建立合理的挤压速度规范,则同样可实现等温挤压。
The Three Dimension Isothermal Viscoelastic Numerical Simulation of Gas-assisted Extrusion Molding Mechanism 气辅挤出成型机理三维等温粘弹性数值模拟研究
A Method to Prevent the Extruded Part Sticking to the Die in Isothermal Backward Extrusion 等温反挤压中挤压件抱模的防治方法
Base on above, adopting regression method and computer processing data, attain the deformation resistance mathematics model, thus offer basis for choice of isothermal extrusion forming technology parameter and computer simulation. 在此基础上,运用回归方法和计算机数据处理得出该材料的变形抗力数学模型,从而为等温挤压成形工艺参数的选择和计算机模拟提供了基本依据。
The isothermal extrusion technology breaks a new path for producing the copper alloy solid roller bearing cages. 等温超塑挤压成形技术开辟了铜合金实体保持架加工的新途径。
Study of Numerical Simulation for Three-Dimensional and Isothermal Viscoelasticity on Full Slip Extrusion Process of Gas-assisted Dies 气辅口模完全滑移挤出成型过程的三维等温黏弹性数值模拟研究
According to technological characteristics of extrusion forming, the frames of the copper alloy solid column roller bearing retainer are optimized, and the isothermal extrusion technology for them is studied in the paper. 根据挤压成形的工艺特点,对圆柱滚子轴承铜合金实体保持架进行了结构优化,并进行了等温挤压成形工艺试验研究,制出了合格的样品。
The paper introduced the situation of producing solid bearing cages and studied the isothermal temperature extrusion technology and die design. 介绍了实体轴承保持器的生产现状,研究了保持器的等温挤压成形工艺,并介绍了相关模具设计。
The article from practice, it introduced the study on isothermal extrusion using the deform. 从等温挤压的实践出发,概要地介绍了Deform在等到温挤压研究中应用。
Isothermal flow field analysis of non Newtonian fluid in common flight elements of counter rotating twin screw extrusion is concerned. 作者对啮合异向双螺杆挤出过程常规螺纹元件在充满熔体情况下的三维、等温、非牛顿流场进行FEM计算模拟的研究结果。
Isothermal extrusion technology and design of die for magnesium alloy spring plank 镁合金弹簧汽室支架等温挤压工艺与模具设计
With the development and study of the extrusion technology, people gradually realize that isothermal extrusion technology will eliminate these quality limitations. 随着挤压技术的发展和对挤压工艺的深入研究,人们逐渐认识到等温挤压对限制及消除这些质量缺陷是一种较理想的挤压方法。
Isothermal Extrusion Technology for Copper Alloy Bearing Cage 铜合金实体轴承保持器等温挤压成形技术
Using approximate isothermal extrusion process, the blanks of eligible Al-alloy cup-shaped piece were gained. The process raises production efficiency, and reduces the cost of trial and production. 采用近似等温挤压工艺,获得了合格的铝合金杯形件毛坯,提高了生产效率,降低了试验和生产成本。
The 3D viscoelasticity isothermal flow of plastic melts in the extrusion die for a Y-shaped plastic profiled bar was numerically simulated by using PTT viscoelastic constitutive model and penalty function finite element method. 以Y形截面异型材挤出为研究对象,采用PTT粘弹本构模型和罚函数有限元法,对塑料熔体在挤出口模内的三维粘弹性等温流动进行了数值模拟。
The Isothermal Visco-Flow Theory of Screw Extrusion for Double-Base Propellant 双基火药螺旋挤压的等温粘性流动理论
The influence of the isothermal temperature, the stirring speed and the extrusion pressure on quality of the formed parts were investigated. 研究了半固态等温温度、搅拌速率和挤压力对成型件质量的影响。
The following main achievements were yielded: ( 1) Based on process characteristics of gas-assisted full slip extrusion molding and the theories of rheology and hydrokinetics etc., under reasonable assumption, full three dimension steady isothermal viscoelastic theoretical model of describing gas-assisted extrusion molding process is established. 针对气辅完全滑移挤出成型过程的特点,基于流变学和流体动力学理论,经合理假设,建立了描述气辅完全滑移挤出成型过程的全三维稳态等温粘弹性理论数学模型。
Experimental research on the isothermal extrusion process for LD 11 aluminum alloy piston skirt LD11铝合金活塞裙等温挤压试验研究
Using finite element simulation analysis, the theoretical process parameters were verified, the feasibility of isothermal extrusion process of Al-alloy cup-shaped piece was studied, which provided a feasibility basis for the trial. 采用有限元模拟分析技术,验证了理论工艺参数,并对铝合金杯形件等温挤压成形工艺进行了可行性研究,为试验提供了可行性依据。