变形体温度场和位移场的计算

本文用热源法对简单热传导问题进行了解析解的计算，并应用PDE工具箱求解热传导偏微分方程得到数值解。通过两种温度场的计算结果求出相应的位移场结果，比较可知MATLAB中PDE工具箱对难以用解析法求解的热传导问题有一定的指导作用。     

低压铸造三维温度场的冷却边界条件处理

低压铸造模具结构比较复杂，存在多处冷却系统对模具进行强制冷却。对低压铸造的多种类型的界面根据其换热的特点作了大致分类。针对每种情况，考虑了冷却介质和冷却管道的个性参数，建立了相应的计算模型，并编制计算程序对实际铸件进行了模拟计算。     

红外测温技术在离心复合铸造轧辊生产上的应用

本文分析了离心复合铸造轧辊生产过程中离心机停机温度和时间对轧辊质量的影响 ,提出了用先进的红外测温技术来预报停机温度和时间 ,以实现微机监控适时停机 ,保证轧辊内外层熔合良好 ;同时指出了红外测温技术在离心复合铸造轧辊生产上的应用前景     

中频感应加热中温轧制成形工艺及其应用

介绍应用中频快速感应加热方法对弹簧钢、轴承钢、工模具钢等冷变形抗力大的材料及某些异型材在再结晶温度以下进行温轧的成功经验。利用快速加热还可对轧后需保持原有组织和特性的材料进行轧制。     

碳钢在含硫介质中的极化行为

采用原油罐罐底水为介质,测定了不同含硫量、PH值以及不同温度下碳钢的极化曲线,分析了各因素对碳钢极化行为的影响。研究结果表明:碳钢在硫含量大于0.2g·L～（-1）、PH值大于9以及一定电位下处于钝化状态,腐蚀电流小;较高温下将大大加速碳钢的腐蚀。     

ZG20SiMn高温流变性能研究

在Gleeble-15000热力模拟实验机上测定了ZG20SiMn从300℃到固相线温度区间的流变性能，辨识出其符合流变学[H]-[N|S]模型以及流变参数。将流变学模型和拉伸实验得到的弹塑性模型进行了比较分析，结果表明流变学模型更适合描述铸件的高温力学行为。     

彩板涂料固化温度曲线的测定

在卷材有机涂层钢板生产中，涂料的固化温度是影响产品质量的重要因素。使用BYKOTRACK和GRADIENT－OVEN测出不同基板、不同涂料的固化温度曲线，并控制固化过程温度参数，可使每次生产都获得最佳固化温度，此而大大减少废、次品，经济效益十分显著。     

On The Measurement of Temperature in Material Removal Processes

Because it is key to understanding the performance of material removal processes and resultant workpiece quality, the measurement of temperature during material removal is done extensively. We review several widely used temperature measurement methods and show how they can be applied to temperature monitoring during material removal. Since there is little documentation on measurement uncertainties as relates to material removal, this paper outlines the physics of each method, detailing the sources and evaluation of uncertainty. Finally, using criteria critical in measuring material removal, methods are compared, and the results presented in guide-format for participants in this field of work.     

12Cr2Ni4MoVNb钢热处理工艺参数的研究

通过对12Cr2Ni4MoVNb钢锻件的热处理工艺试验研究,重点进行了晶粒长大倾向、奥氏体化温度、奥氏体化保温时间、回火温度及回火保温时间对性能的影响的试验工作,分析了各种热处理工艺参数对力学性能的影响,优化了热处理工艺参数并在生产中进行了验证。在限定回火温度并且不损失塑韧性的前提下可以使σ_b和σ_(0.2)满足订货条件要求:σ_b≥90OMPa、σ_(0.2)≥60OMPa。     

A critical analysis on the friction modelling in orthogonal machining

Despite the development of high performance finite element-based codes, the simulation of machining still represents a very hard task due to the geometric complexity of the real chip-tool systems and the high cutting speed that requires very long simulation times. For these reasons, many aspects related to machining are not very clear and so easy to simulate. In this paper a rigorous investigation on the role played by the implemented friction model within a 2D simulation of orthogonal cutting was carried out, taking into account different models proposed by the researchers in the last years. The main simulation results were compared with experimental measurements in order to verify if it is possible to identify the best model. Once the comparison with mechanical variables was completed, a subsequent study on temperature predictions utilizing the above friction models was executed as well. The results of this integrated numerical and experimental work are carefully reported in the paper.