Professor R. N. Parkins Receives Whitney Award from N.A.C.E.

Abstract

In situ metallography has been used to study the effect of temperature on the microstructural changes on the outside surface of primary reformer tubes, used for the production of reformed gas suitable for ammonia synthesis in a 200 tonnes per day capacity ammonia plant. The outside skin temperature varied in the range of 860° to 1050°C. The studies indicated marked changes with increasing temperature in the size of grains and carbide morphology, i.e., the pattern and distribution of primary and secondary carbides.     

艾福表面处理技术（上海）有限公司

阿可／舍舍夫、Tufftride／Tenifer／Melonite／QPQ是法国H．E．F．集团和其Durferrit子公司开发的盐浴表面技术，经过不断发展现已成为无污染的可控液体离子渗氮CLIN（Controlled Liquid Ionic Nitriding）技术。适用于提高钢铁工件表面硬度，耐磨性，抗咬合，抗疲劳性和耐腐蚀性场合。     

Steelmaking / U.S.A.

This is the fourth and final installment of Leo Reinartz’ summation of the steelmaking industry over the first one hundred years.     

Steelmaking / U.S.A.

Part III of a four-part series on the history of steelmaking in the US, describes furnace developments, improvements during the last few decades, and the contribution of the AIME.     

ICP-AES法同时测定金属镁中的铁硅铜铝镍锰

本文研究了在一定溴存在的条件下 ,试样以盐酸与硝酸溶解 ,用ICP—AES同时测定金属镁中Fe、Si、Cu、Al、Ni、Mn六种元素。为消除大量镁基体的干扰 ,本方法采用镁基做工作曲线 ,测定结果令人满意 ,完全可满足产品分析要求 ,方法简便可靠。     

Steelmaking / U.S.A.

The history of steelmaking in the United States is a fascinating story of determination, sudden tragedy, exploitation, and inventive genius rolled into one gigantic plot. Mr. Reinartz’ flowing interpretation of the progress made in the last one hundred years is being presented in a series of four articles.     

Steelmaking / U.S.A.

Part II of a four-part series on the history of steelmaking in the US, points out the inadequate safety and living conditions that existed in steel mills at the turn of the Century. Also defined are furnace and process developments.     

采用步进梁式加热炉的油井管调质生产线

由于油井管的工作条件非常恶劣,因此对其综合力学性能要求较高。要达到所需的力学性能,一般要对其进行调质处理。介绍了采用步进梁式加热炉的油井管调质生产线及所采用的先进工艺、先进装置、先进技术和其使用效果。