贵港航运枢纽工程通过交工验收

广西西江航运建设二期贵港航运枢纽工程交工验收会于2001年1月10日至12日在贵港举行。 　　本次验收工作由区交通厅主持，参加单位有工程指挥部、监理部、设计单位、施工单位及运行单位。在验收会上，各方代表对广西电力院的设计工作给予了很高的评价。区交通厅质量监督站对本工程的质量等级核定为优良。经过一年多试运行考验，所有设备运行指标均达到设计要求。1999年2月1日至2000年11月30日发电量已达9.16亿kW*h，创电费收入2.437亿元，开始发挥巨大的工程效益。 　　 (撰稿　刘益祥)     

THERMAL DEBINDING OF A NEW BINDER

ＴＨＥＲＭＡＬＤＥＢＩＮＤＩＮＧＯＦＡＮＥＷＢＩＮＤＥＲ①ＺｈｏｕＪｉｃｈｅｎｇ，ＨｕａｎｇＢａｉｙｕｎ，ＷｕＥｎｘｉ，ＹｕＬｉｇｏｎｇ，ＱｕＸｕａｎｈｕｉＮａｔｉｏｎａｌＫｅｙＬａｂｏｒａｔｏｒｙｆｏｒＰｏｗｄｅｒＭｅｔａｌｕｒｇｙ，Ｃｅｎｔｒａ...     

Effect of a direct magnetic field on the interfacial microstructure between molten aluminium and solid iron

Many processing techniques, such as hot dip aluminizing, bimetal formation, liquid metal corrosion, cementing, welding and diffusion bonding, are basically dependent on interfacial reactions [1-3]. It is therefore important to investigate the formation and growth of intermetallic layers at the interface. There have been several studies carried out to examine chemical compositions and growth kinetics of intermetallic layers in the Al-Fe system [4-9]. Most authors have come to an agreement that…     

Advances in the research of nitrogen containing stainless steels

The current status of nitrogen containing stainless steels at home and aboard has been introduced. The function and existing forms of nitrogen in the stainless steels, influence of nitrogen on mechanical properties and anti-corrosion properties as well as the application of nitrogen containing cast stainless steels were discussed in this paper. It is clear that nitrogen will be a potential and important alloying element in stainless steels. And Argon Oxygen Decarbonization (AOD) refining can provide an advanced manufacture process for nitrogen containing stainless steels with ultra-low- carbon and high cleanliness.     

一水合硫酸氢钠催化β-萘甲醚的合成

利用一水合硫酸氢钠催化合成 β 萘甲醚 ,3 6 gβ 萘酚 ,3ml甲醇 ,1 5g一水合硫酸氢钠 ,80℃反应5h ,HPLC分析产率达 78 3%。固体催化剂容易过滤分离。     

四氯化锡催化合成β-萘甲醚

四氯化锡催化下,β 萘酚与无水甲醇反应合成β 萘甲醚,考察了甲醇用量、催化剂用量、反应时间等对产率的影响。当β 萘酚取1.8g,甲醇1.5mL,SnCl4·5H2O取0.33g时,80℃反应10h,β 萘甲醚产率可达75.3%。     

硫酸氢钠催化合成阿司匹林

采用处理过的硫酸氢钠作为催化剂合成阿司匹林,探讨了催化剂用量、反应时间、反应温度对产品收率的影响。结果表明,当水杨酸用量为3.0g,醋酸酐用量为6ml,硫酸氢钠用量为反应物总量的3.16%时,75℃反应30min,纯化阿司匹林收率可达76.9%。产品经红外及紫外光谱表征,纯度理想。该法有一定的应用价值。     

EFFECT OF COMPOSITION ON PHYSICAL PROPERTIES OF AMORPHOUS Fe-Si-B ALLOYS

ＥＦＦＥＣＴＯＦＣＯＭＰＯＳＩＴＩＯＮＯＮＰＨＹＳＩＣＡＬＰＲＯＰＥＲＴＩＥＳＯＦＡＭＯＲＰＨＯＵＳＦｅＳｉＢＡＬＬＯＹＳ①ＷａｎｇＬｉｎｇｌｉｎｇ，ＺｈａｏＬｉｈｕａ，ＨｕＷａｎｇｙｕ，ＷｕＬｉｊｕｎ，ＺｈａｎｇＢａｎｇｗｅｉＤｅｐａｒｔｍｅ...     

Discussion on compact mechanism of air-stream and synchro-formed clamp plate impact molding

1 .Introduction Due to many advantages such as simple molding machine structure high compact compaction of sand mold, speed and well-distributed the air-stream impact molding method However, has been extensively used in production.when this molding method is applied to mold complicated pattern with wider top surface and deep     

K_2CO_3/Al_2O_3催化丙醛缩合制备2-甲基-2-戊烯醛

制备了K2CO3/Al2O3固体碱催化剂,并将其用于催化丙醛缩合合成2-甲基-2-戊烯醛。当反应温度为85℃,反应时间1 h,溶剂乙醇10 mL,丙醛用量9.4 mL,催化剂用量为1.0 g时,2-甲基-2-戊烯醛的产率可达71.2%。固体K2CO3不具备催化性能。