Research on ferrocene derivatives is a hot work in organometallics chemistry, structure chemistry and material science.
二茂铁衍生物是近年来有机金属化学、结构化学和材料科学等学科领域的研究热点。
The implementation of hot work for station crude oil pipeline must be in accordance with the standard of SY5859-93 because the media transported are solidifiable, inflammable, and explosive.
根据输油生产的连续性特点以及输送介质具有易凝、易燃、易爆的性质，站内原油管道施工动火必须严格遵循SY5859—93《石油工业企业动火安全规程》。
Trash, wooden pallets and any other flammable material must be removed from areas of hot work.
应移除高温作业区域的所有垃圾、木制托盘和其他可燃物。
All hot work in confined space must have work Permits of the hot work and confined space and Job Hazard Analysis.
受限空间内的所有动火作业必须要有动火作业许可证和受限空间作业许可证及作业危险性分析。
Continuous and adequate air supply must be provided as hot work will deplete oxygen content in the confine space.
必须提供持续的和足够的气源，因为动火作业会消耗受限空间中的氧气。
In our country, 40 ~ 50 thousand tons of hot work die steels, worthy of thousands of million RMB, have been used every year.
我国每年消耗热作模具钢数约4 ~ 5万吨，价值数亿至数十亿元。
For example a work shop or grit blasting area where hot work is considered "normal operation" will not require Permit to work.
例如在喷钢砂处理区域，高温作业是“常规操作”，所以就不必申请作业许可证。
The hot work technique to be used and the control necessary to avoid unacceptable weakening of the work piece during the work.
待采用的动火作业技术及所需控制以避免作业过程中造成的不能接受的工件性能的削弱；
The grain coarsening behaviour towards the austenitic hot work tool steels has been studied by means of quantitative metallography.
本文用定量金相法分析和讨论了奥氏体热作工具钢的晶粒粗化行为。
Tool compatibility and hot work risks require even greater attention to the job, and the hazards that are specific to the work area.
由于工具适用性和高温作业风险问题的存在，我们需要更加密切地关注工作，以及工作区域中特定的种种危险。
The steel_bonded carbide GJW35is a new kind of hard die material, can be used to make not only cold work dies, but also hot work dies.
GJW35钢结硬质合金是一种新型硬质模具材料，可用于冷作模具，又可用于热作模具。
According to the service conditions of hot work die steels, SDH3 steel (patent steel) was designed in this paper based on uniform design method.
本文根据热作模具钢的服役条件，基于成分均匀设计方法设计出一种高硅低钼型热作模具钢sdh3钢(专利钢)。
The new cast hot work die steel (CHD steel) has high strength and toughness, high thermal stability, high lifetime and wide application prospects.
新型铸造热锻模具钢（CHD钢）由于具有较高的强韧性和高温稳定性，使用寿命高于锻造模具，具有广阔应用前景。
A furnace with preheating equipment for water vapor is developed for surface oxidation treatment of hot work dies. This type furnace is successfully used in industry.
针对热作模具钢的表面氧化处理，本文开发了一种带蒸汽预热装置的氧化处理炉，这种炉型现已应用于工业生产。
At last, a synthetic model of evaluation and a standard are established. So the occupational adaptability in the hot work environment can be synthetically evaluated by quantitative analysis.
最后，建立了综合评价模型和标准，对高温作业环境职业适应性进行定量化综合评价。
Hot work is any maintenance or construction activity where welding equipment, torches or grinders are being used.
高温作业是指需要使用焊接设备、喷枪或研磨机的维护或施工作业。
Thermal fatigue is one of the primary form of hot-work die steels failures.
热疲劳是热作模具的主要失效形式之一。
The effects of rare earth (re) complex modification on structure and the properties of a new cast hot-work die (CHD) steel were investigated.
研究了稀土复合变质对新型铸造热锻模具钢(CHD钢)组织与性能的影响。
In this paper, the failure of hot-work valve die is analysed with SEM, optical microscope and hardometer. The crack mechanism is explained and some methods are presented to prolong the die-durability.
本文运用电子扫描、金相分析、硬度测量等方法对气门阀热镦模的早裂进行了失效分析，探讨了模具的失效机理，提出了改善模具质量、提高模具使用寿命的途径。
In this paper, the failure of hot-work valve die is analysed with SEM, optical microscope and hardometer. The crack mechanism is explained and some methods are presented to prolong the die-durability.
本文运用电子扫描、金相分析、硬度测量等方法对气门阀热镦模的早裂进行了失效分析，探讨了模具的失效机理，提出了改善模具质量、提高模具使用寿命的途径。
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