Using infrared system the apparatus of non-touching at limited-area to monitor the hardening temperature at site is produced for high-frequency induction heat treatment. 利用红外测温原理,研制出高频热处理时的小目标非接触式在线动态监控淬火件温度的装置。
It is found that the steel resistances to fatigue crack growth increase with the rising of the tempering temperature when it is higher than the second hardening peak temperature. 发现高于二次硬比峰温度回火时,此钢的疲劳裂纹扩展阻力随回火温度升高而增加。
Simulation and Calculation of Grind Hardening Temperature Field 磨削淬硬温度场的数值模拟
The paper introduced the working principle of the lead hardening temperature measuring and control system for the steel wire base on the fuzzy suitable PID control. 阐述了基于模糊自适应PID控制的钢丝绳用钢丝铅浴淬火温度测控系统的工作原理。
The experimental and theoretical investigations of laser hardening treatment temperature field 激光热处理温度场的实验和理论研究
The results show that cycle stress-strain curves of zircaloy-4 behave as cycle hardening behavior at room temperature and cycle softening behavior at 400 ℃, respectively. 结果表明,Zr&4合金室温下的循环应力-应变曲线表现为循环硬化,而400℃下表现为循环软化;
This article briefly Introduces the principle characteristic performance of the microcomputer system for hardening of glass work on temperature control. 本文简要的介绍了钢化电炉温度微机控制系统的技术性能和工作原理。
As a dimensionless function of the strain hardening exponent H and of temperature, the C_m values are analyzed and computed, and variations of C_m along with m values also given. 本文将无量钢系数Cm作为应变硬化指数H和温度的函数加以分析,并进一步给出了Cm值随m变化的趋势。
Etc were also investigated. The results indicate that the modified aliphatic amines hardener HD can lower the hardening temperature, reduce the hardening time of epoxy resin adhesive systems, and effectively increase the hardening performances of adhesive systems under the low temperature. 试验结果表明:改性多胺固化剂HD能降低环氧树脂胶粘剂体系的固化温度,减少其固化时间,有效地提高胶粘剂体系在低温下的固化能力;
Influence of Hardening Temperature on the Hardness of Low Alloy Cast Iron 淬火温度对低合金铸铁硬度的影响
Lead hardening temperature measuring and control system for steel wire base on fuzzy PID 基于模糊PID的钢丝铅浴淬火温度测控系统
As the hardening temperature increases, the speed hardening and degree of the adhesive JD increase, the mechanical and adhesion performances of the adhesive systems can be further improved. 而且随着固化温度的提高,胶粘剂体系的固化速度和固化程度还会进一步增加,力学性能、粘结性及耐热性能也会进一步提高。
Therefore, the hardening temperature should be selected in the range of 1220-1240 ℃. 此钢淬火温度范围较窄,应在1220~1240℃之间适当选择。
This paper introduces the design of taper bore flame hardening machine, fixtures, nozzles block and the methods to determine hardening temperature and phase balancing time. 介绍了内锥孔火焰淬火机床、工装和喷头的设计以及淬火加热温度和相平衡时间的确定方法。
On the basis of thermodynamics principles, the effect of hardening on the temperature of the crack tip is studied by using internal variable theories. 从热力学理论的框架出发,采用内变量理论,研究了硬化对裂纹尖端温度的影响。
The effects of addition of a trace amount of Sc on the aging behaviour, microstructure and mechanical properties of low Cu/ Mg ratio Al-Cu-Mg-Li alloy have been investigated by measurement of age hardening curves, room temperature tensile test and electron microscopic observation of aging structure. 通过时效硬化曲线的测量、室温拉伸实验以及时效组织的电镜观察,研究了微量钪对低Cu/Mg比Al-CuMgLi合金时效行为、显微组织和力学性能的影响。
Discussed the relationship of strain rate, the varying tendency of flow stress while temperature changing, and the relationship of strain hardening effect, temperature and strain rate in detail. 对该合金流变应力随温度变化趋势与应变速率关系,以及应变强化效应与温度和应变速率关系进行了较为详细的讨论。
Study on Apparatus of Non-Touching at Limited-Area to Monitor the Hardening Temperature 以来研究区重要的地质事件之一,它是当时研究区区域构造运动作用的结果。小目标非接触式淬火温度监控装置的研制
Study on Apparatus of Non-Touching at Limited-Area to Monitor the Hardening Temperature 小目标非接触式淬火温度监控装置的研制
The conclusions can be summarized as follows: 1. The Cu-Zn-Ni-Al alloys have typical strengthening effect by ageing precipitation, which has a strong age hardening effect under high temperature solution treatment and low temperature ageing treatment. 通过研究,得到的结论如下:1.Cu-Zn-Ni-Al合金具备典型时效析出强化的特性,在高温固溶处理-低温时效处理的过程中表现出强烈的时效硬化效应。
But it has some shortcomings, such as lower early strength, the bulk shrinkage of hardening paste and high sintering temperature etc., which can not meet the requirements for special modern construction projects. 但是由于其自身存在的一些缺点,如早期强度偏低、硬化浆体体积收缩和烧成温度高等,已不能满足一些特殊工程建设的要求。
Secondly, the Co-based deposited metal possesses excellent shock hardening at room temperature and high temperature. With reducing the carbon content, the shock hardening changes more significant. 钴基堆焊金属具有非常优异的常温和高温冲击硬化效应,并随着含碳量的减少,硬化效果越显著。
It introduces the selection of medium from callus to buds rooting, and the effects of hardening time, temperature, transplantation medium as well as transplanting methods on the survival rate of Dendrobium. 分别进行了愈伤组织、原球茎、丛生芽和生根的再生植株阶段的培养基筛选,研究了炼苗时间、温度、移栽基质和移栽方式对铁皮石斛试管苗成活率的影响。