The peak temperature of concrete hydration increases with increasing casting temperature of concrete, the relation of the two is approximately linear. 水化热温度峰值随着入模温度的升高而增大,其变化规律近似符合线性关系。
In order to accurately calculate casting temperature field, a method of simple variable time step is established which can ensure the precision of casting temperature field and the speed of calculate. 本文中提出了一种较简便确定变时间步长的方法,该方法可以确保温度场的计算精度和计算速度。
The temperature field and solidification course is analyzed under the influence of process parameters such as casting temperature and casting speed and the component distribution is predicted. 开发了具有自主知识产权的水平连铸数值模拟软件系统,分析了浇注温度和拉坯速度等工艺参数对温度场和凝固进程的影响,预测了合金管坯的成分分布。
The casting temperature of molten steel is an important parameter in converter production and plays a determinative effect in the CC process. 钢水的浇铸温度是炼钢生产过程中的重要参数,并在连铸中起决定性的作用。
Regulation of Casting Temperature Field in Metal-Die 金属型铸造过程中铸件温度场的调整
A overall one temperature and stress field carry on research to mould, for make reasonable casting temperature, casting speed and intensity of cooling there are important meanings. 全面的对结晶器内温度场和应力场进行研究,对于制定合理的浇铸温度、拉坯速度和冷却强度都有重要的意义。
The influences of casting temperature, slope angle and slot radius on the shapes and sizes of primary austenite was studied. 研究了浇注温度、倾斜板角度、凹槽半径对先共晶奥氏体形貌和尺寸的影响。
The effect of process parameters, including of alterative, modification temperature, modification time, casting temperature, and so on, on refining of primary Si phase in hypereutectic Al-Si alloy were researched. 研究了磷变质时,变质剂、变质温度、变质时间、浇注温度等工艺参数对过共晶Al-Si合金初晶硅细化的影响。
In the liquidus nearby, the grains size becomes coarse with increasing of casting temperature. 在液相线附近,晶粒尺寸随着浇铸温度的降低而逐渐减小并呈球化的趋势。
Casting temperature have a little effect on the solidification end location. 浇注温度对铸坯的凝固末端位置也有一定影响。
The influence of casting temperature and velocity on the slag deposition of ingot head 注温和注速对钢锭头部积渣的影响
The measures on improving the cleanliness of molten steel, such as rational burden of EAF for temperature of steel tapping, enough holding time of refining, suitable top casting temperature, protective casting and perfecting the process control are put forth. 提出了通过电炉合合理配料,保证出钢温度;精炼保证足够的镇静时间,确保合适的上连铸温度和连铸执行保护浇注及完善生产过程控制提高钢水洁净度的措施。
The hot tearing rate and hot tearing coefficient obtained through changing casting temperatures indicate that proper increase of the casting temperature can be helpful to reducing hot tearing trend and to gaining the casting with impact structure. 试验中调节了不同的浇注温度,通过热裂率和热裂系数的结果可知,适当的提高浇注温度有利于减小热裂倾向,获得组织致密的铸件。
Results indicate that the continuous casting billets have serious defects such as centre porosity, interal cracks and centre cracks, caused by the combined effects of improper casting temperature, cooling intensity, casting speed and so on. 结果表明,连铸方坯上的中心疏松、中间裂纹和中心裂纹颇为严重,分析认为这些缺陷是浇注温度、冷却强度和拉坯速度等因素综合影响的结果。
The casting temperature and casting velocity range of 6063 alloy is wide. 6063合金的熔铸温度和铸造速度范围较宽。
The results showed that increasing casting temperature and decreasing casting velocity properly can reduce the slag deposition and improve the surface quality of ingots. 研究结果显示,适当提高浇注温度和适当降低浇注速度可以减少钢锭头部积渣,改善钢锭表面质量。
On-line control technique of molten steel casting temperature 钢液浇铸温度在线控制技术
Effects of casting temperature and macrostructure on Hydrogen-Induced Cracking of tyre steel 连铸温度和低倍组织对轮箍钢氢致开裂的影响
The effects of casting temperature, material constitutes and size of alloy powder on the quality of surface alloyed layer are studied. 研究了熔剂加入量、浇注温度和合金粉粒度对表面合金层质量的影响。
The influence factors of casting temperature and casting velocity on slag deposition in ingots head were investigated by industrial experiments. 通过工业实验,研究了注温和注速这两个主要浇注工艺条件对钢锭头部积渣的影响规律。
The effect of molten steel purity, casting temperature, performance of protecting slag, oscillation and liquid level control of mold in continuous casting on surface defect was studied importantly. 重点阐述了钢水洁净度、浇铸温度、保护渣性能、结晶器振动以及液面控制等连铸工艺对表面质量的影响。
Through simulation in computer using the all-purpose computer simulation software secondary cooling in slab continuous casting and test results, the influence of the factor such as casting speed, casting temperature, shell thickness and secondary cooling system are analyzed. 应用仿真软件和实验数据对宝钢1930铸机进行了仿真计算,分析了拉速、配水制度、过热度对铸坯温度场和坯壳厚度的影响;
Increasing machine whisk time and casting temperature, bubble and oxidation were decreased notablely. 通过增加搅拌时间和提高浇注温度,显著降低了零件中的气泡和氧化现象。
The high pressure die-casting technology for producing motor rotator was optimized by orthogonal experimentation of 3 factors and 3 levels, and the effects of three main parameters ( casting temperature, injection speed and casting pressure) on cast quality were investigated. 采用三因素三水平正交试验法对电机转子压力铸造工艺方案进行了优化设计,研究了三个主要的工艺参数(浇铸温度、压射速度、浇铸压力)对铸件的影响。
The effect of casting temperature, modification temperature and modification time on Al-Si alloy has been studied, and the mechanism of modification was preliminarily studied too. 本文向Al-Si合金液中添加少量过共晶Al-Si合金,研究浇铸温度、变质温度及变质时间对Al-Si合金的影响,并对变质机理进行了初步探讨。
Increasing the casting speed is helpful for electromagnetic field to refine the solidification structure. Reducing the casting temperature and enhancing cooling intensity are harmful for electromagnetic field to refine the solidification structure. 提高铸造速度有利于电磁场对管坯凝固组织的细化作用;降低铸造温度,增大冷却强度不利于电磁场对凝固组织的细化作用。
Based on numerical analysis, orthogonal test method was used to analyze the influence on the shrinkage of the ingot caused by different parameters such as casting temperature, different mold preheating temperature and surface heat transfer coefficient. 3. 在数值分析的基础上,利用正交试验分析法研究浇铸温度、不同铸型预热温度、不同表面换热系数等工艺参数对铸锭的缩松情况的影响。
The influences of the main factors were investigated which including polymer concentration, additive concentration, coagulate liquid composition and casting temperature on membrane structure and properties. 考察了主要成膜参数(聚合物溶液浓度、添加剂浓度、凝固浴组成和温度)对膜结构与膜蒸馏性能影响。
Comprehensive analysis to consider the casting speed and casting temperature on the ingot stress field, has been effective in preventing the cracks of the casting process. 综合分析考虑铸造速度和铸造温度对铸锭应力场的影响,得到了有效防止裂纹产生的铸造工艺。