Aiming at studying the fatigue life of hub bearings under cryogenic treatment,DAC4074040 hub bearings were used as samples to improve the heat treatment with cryogenic treatment.The strengthen test was utilized to verify their fatigue life on ABLT-1A bearings fatigue life testing machines.The test r

<正> 8月18日,美菱与中国科学院共同组建的中科美菱低温科技有限责任公司在合肥正式成立。这个以生产深冷冰箱为主的公司的成立,将打破我国生物医药行业低温制冷设备长期依赖进口的局面。当前,随着生命科学和生物基因工

Against the problems existed on axial fan for deep freezing unit and combining the fan trans_ forming process,its solving method and actual ope_rating efficiency are pointed out.

The effect of cryogenic and magnetic field cryogenic treatments on the retained austenite in steels is discussed These treatments provide a way to fully tap the potential of these widely used engineering materials

深冷用 (+90～ - 196℃ )保冷属新技术及高危产品保冷技术 ,对液化气体 (液化天然气、液化石油气、液化乙烯、液氧、液氮等 )深冷储运使用的 PUH、PU B改性聚氨酯泡沫塑料保冷技术使用的材料、保冷结构、施工工艺、科学试验和生产应用等技术作了简要介绍

The wear-resistibility of YW1 deep cryogenic cutting tools is improved obviously compared with the non-deep Cryogenic ones. The internal mechanism is also analyzed primarily in this paper. It is found that the main reason is the completely α--Co-ε-Co phase transformation in the deep cryogenic proces

The PR equation of state and mixed rules modified are used for the simulated calculation of cryogenic purifier distillation. The distributing data of temperature, pressure, vapor rate, liquid rate and compositions along whole distillation are obtained. The results have shown that the modified mixed

In this paper,the author elaborated the principle,process and technical characteristics of deep cooling oxygen making, introduced the application of deep cooling oxygen making technique in some copper smelting plants in combination with engineering practice,and put forward some measures of safe oper

This thesis mainly studies the feasibility of applying cryogenic treatment technology to purging harmful gases which are mainly composed of carbon dioxide.The paper puts forward three technical projects,analyzes the system composition,the operation principle and head capability,balances the merits a

空气分离设备设计主要分为两种,一种是在常温或者说是非低温的情况下进行的,通常叫做"常温空分",而"常温空分"又分为"变压吸附分离"和"膜分离"两种。另外一种是在非常低的温度下进行的,通常叫做"深冷空分",本文首先阐述了空气分离设备的涵义,其次,对深冷技术在空气分离设备设计中的应用进行了深入的探讨,具有一定的参考价值。

<正>根据《液化气体汽车罐车安全监察》之规定,汽车罐车分为罐体固定在汽车底盘上的单车固定式汽车罐车和半挂式汽车罐车。罐体又可分为裸式、有保温层或绝热层形式。

Based on energy balance,pressure balance and mass conservation,a steady-state mathematical model of a cryogenic loop heat pipe(CLHP) with nitrogen as the working fluid was established in this paper,and the modeling results showed good agreement with the experimental data.Theoretical investigation of

针对在实际生产中经常出现的脱甲烷塔顶部及2-V1底部截流阀冻堵现象,结合天然气处理厂深冷装置的相关工艺流程、工艺条件,分析了CO2固态析出是造成冻堵的根本原因,介绍了出现初期及深度冻堵时的现象,并提出了相应的解决方法和预防措施。

A special cryogenic loop heat pipe(CLHP) is designed,with which the supercritical start-up behavior,heat transfer ability,and cyclic loading adaptability are studied with experiments. The present paper describes and analyses the experimental phenomena. The results of investigation show that this CLH

Frost usually forms on the surface of air-warmed cryogenic finned-tube vaporizers in practical application,resulting in unfavorable influence on heat transfer.It is difficult to perform the theoretical analysis on the unstable frosting process.In our study,the experiment was conducted to obtain the

Before cryogenic loop heat pipe operates,the working fluid is in supercritical condition.In order to ensure the successful startup of the primary evaporator,the liquid working fluid must prime the cap-illary wick.The influences of hot reservoir location,secondary evaporator power and filling pressur

利用Aspen Plus软件,选择PR-BM物性方法,对某合成氨装置的低温液氮洗涤工艺的设计工况和改造工况进行了模拟分析,并提出了改进方案。比较改进前后液氮洗涤塔内温度变化情况可知,改进后工艺传质传热效果更优,而且改进后得到液氮洗涤塔出口净化气中CO的含量为0.55×10-6,其净化效果更好。同时,在保证出口净化气中CO的含量小于5×10-6时,降低进口液氮温度为85.15 K,可减少液氮使用量757Nm3.h-1,节约2 MW热能。

As the widespread application of cryogenic liquefied gas,the number of cryogenic vessels needed is increasing.On the premise of safety,realizing light-weight of cryogenic vessels has significance to energy conservation and emission reduction.Yield strength of austenitic stainless steel can be enhanc

To simulate CO cryogenic separation using PRO II software.By means of such simulation the cold-box operating temperature is further optimized,by controlling the hydrogen stripper recycles to raise the quality of product gas;the result shows that purity of CO separated with cryogenic technology is hi

The hardware and software configurations of the automatic control system for cryogenic equipments in the 12000m3/h outer-compression low pressure process in Laiwu Steel Group are introduced in this paper. The emphases are put on some advanced dynamic whole-process adaptive technologies such as the m

Formation mechanism,harm and preventive measures of natural gas hydrate were discussed.Three effective methods to prevent natural gas hydrate from freezing and block in cryogenic facility were put forward,such as removal of water in natural gas,addition of chemical inhibitor to natural gas,high-temp

萨南油田二氧化碳含量的升高直接影响了天然气处理装置的制冷温度。在外输商品气及轻烃产品对CO2含量没有限制的条件下,为简化设计、方便操作、降低投资,不推荐同步建设脱碳设施,但需要预留脱碳及回收设施位置,同时使制冷能力为脱碳做适当预留。