浦项开发35W270以上牌号无取向硅钢

钢中加Sn和Sb得到优良的磁性，铁损低和磁感高。与加B的比较，晶粒大，立方织构、高斯织构、（100）[uvw]纤维体积份数很高和γ-纤维体积份数很低，增加磁感的磁各向异性和降低铁损的磁各向异性。进行常化与未经常化的比较，最终晶粒大。（100）纤维份数：热轧板的最低，冷扎后变成最高。铁损的各向异性与织构因数之间成反比，磁感的各向异性与织构因数之问成正比。开发出了35W270-250高牌号无取向硅钢。     

高强度烧结钢

为开拓粉末冶金材料新的应用领域，近年来对高强度烧结钢进行了大量的研究与开发。本文简要介绍Ｈｏｇａｎａｓ公司开发的一些高强粉末冶金材料及对一些高强度烧结材料尺寸变化的控制。     

用于实时测量负重轮轮胎温度场的红外遥测系统

为研究坦克装甲车辆行使过程中负重轮轮胎内部的温度分布，研制了一种用于实时测量轮胎内部温度的多路遥测装置。该装置温度信号的传输采用了红外线无线光通信技术，免去了连线，可广泛应用于旋转件中及其它不便连线场合测量信号的传输。该文详细介绍了这一装置的工作原理及各部分的关键技术。     

超越离合器内星轮对数螺旋楔合面的设计

通过对采用平面楔合面内星轮的超越离合器的受力及磨损对其使用可靠性影响的分析，从而提出了用对数螺旋楔合而代替平面楔合面的设计方案，并对两种方案进行了比较。     

HSLA-80/100钢的焊接

对ＨＳＬＡ－８０／１００钢的焊接性、焊接材料及焊接工艺进行了综述，并指出了现存在的主要问题。     

Rolling contact fatigue behavior of sintered and hardened steels

Powder-metal-processed bearings and gears are finding increasing application because of their economical and technical advantages. The residual pores from the sintering operatives act as lubricant pockets and dampen sound and vibration. However, porosity also decreases the mechanical strength and reduces the life of components fabricated by powder processing relative to similar wrought components. The rolling contact fatigue behavior of sintered and heat treated steel rollers was investigated using a fatigue test machine designed and fabricated for that purpose. The powder-metal-processed and the wrought steel rollers that were tested had similar composition and hardness and were mated against wrought steel rollers of high hardness. The contact stress versus number of cycles to failure data showed that the wrought steel had a very high endurance limit under rolling contact fatigue compared to the sintered steels investigated. Rolling contact fatigue behavior was found to depend on the porosity present in the material. Large surface peeling failures and pitting type fatigue failures were observed in the sintered and hardened steels, while only pitting type failures were observed in the wrought steels     

大口径管道带水抢修

包头地区1996年5月3日发生6.4级强烈地震,给包钢生产造成重大损失,地震发生后,包钢生产用动力系统发生多起事故.本文针对4#高炉工业回水管道(φ1220×10)震后发生断裂,如何在保证不停止生产的前提下,采取什么措施进行管道带水抢修进行了阐述,本文是经过现场抢修过程总结而来,对今后大口径管道带水抢修提供了宝贵的经验.     

徐有记道口控制电路集成化改造

在单线半自动线路上的一例道口大修施工中,由于新道口控制盘的集成化改造和功能的完善,必须对原DX2型双线双盘单控电路进行修改,以满足单盘集成控制的要求。     

超高强度钢连续冷却组织和时效反应的研究EI

观察分析了冷却速度对低合金超高强度钢（４０ＣｒＭｎＳｉＭｏＶＡ）精细组织的影响。结果表明，在冷却、低温等温（或回火）过程中，钢显微组织中的马氏体或贝氏体存在时效阶段。其组织特征为呢纹花样。α和ε间的取向不满足Ｊａｃｋ关系，它属一种新的取向关系。过渡型碳化物可直接从呢纹花样区析出。     

The optimal diamond wheels for grinding diamond tools

Grinding is the most suitable process for manufacturing good quality diamond tools. In this paper, diamond wheels have been studied. From the grinding of polycrystalline diamond (PCD) insets, the effects of certain factors such as the bonding material, the grit size and structure of a diamond wheel have been investigated. It is concluded that vitrified bond diamond wheels are the most suitable for grinding PCDs and the recommended grit size is mesh number 1000, which can get a good surface quality within an appropriate time. The wheel structure is another important factor. Rougher wheels (mesh #800, #1000) with the softer grade scale P yield a higher material removal rate (MRR) than scale Q. However, a finer wheel (mesh #1200) needs a tougher structure to promote its grinding ability and to have a higher MRR.