连铸结晶器正弦振动主要参数的合理确定及其应用

正弦振动是现代工业化连铸机结晶器常用的振动方式。文章讨论了正弦振动的特点，主要参数、振动参数的影响，并介绍了正弦振动主要参数的应用。     

软起动器和变频器的时分多机复用技术及其应用

本文提出了时分多机复用的概念，并对其技术和应用加以具体说明，展现了该技术良好的应用前景。     

7050铝合金低频电磁铸锭挤压板的微观组织及时效特性

研究了低频电磁铸造和普通DC铸造7050铝合金铸锭经挤压变形后所得板材制品的微观组织及时效特性.结果表明,低频电磁铸锭挤压板材的微观组织保持了其原始铸态组织晶粒细小的特点.在相同挤压比条件下,低频电磁铸锭挤压板的平均晶粒直径约为10 μm,而普通DC铸锭挤压板的平均晶粒直径约为20 μm.低频电磁铸锭挤压板具有更快的时效强化速率和更好的时效强化效果.两种挤压板在120℃进行单级时效时,低频电磁铸锭挤压板经8 h达到强度峰值,其纵向和横向的拉伸强度分别为656和596 MPa;而普通DC铸锭挤压板经12 h才达到强度峰值,其纵向和横向的拉伸强度分别为647和590 MPa.     

轴承套圈的中频感应加热淬火

试验了GCr15钢轴承套圈的中频感应加热淬火工艺，确定了中频感应加热淬火的各种参数和加热时间。结果表明，淬火后硬度达到62～65HRC，淬硬层深度＞2．5mm，能满足生产技术要求。     

基于结构静动态设计方法的数控机床滑座结构改进

对单自由度系统，其静刚度与固有频率的平方有正比关系。复杂机械结构的静、动刚度与结构的布局有关，但对其某一低阶固有频率和该方向的静刚度，适用上述结论。故通过提高结构的固有频率，可同时改善结构静、动刚度。有限元分析（FEA）方法应用于结构的静、动态设计中，可大大提高结构设计效率。以一数控机床滑座结构为实例，基于结构静、动刚度的关系和FEA方法，对结构进行了改进，使滑座重量减少一半的同时，提高了其结构的静、动态特性。     

a-C:F:H films prepared by PECVD

Fluorinated amorphous hydrogenated a-C:F:H carbon thin films were deposited using radio frequency plasma enhanced chemical vapor deposition(RF-PECVD) reactor with CF4 and CH4 as source gases and were annealed in a N2 atmosphere. The properties of these films were evaluated by FTIR spectrometry, UV-VIS spectrophotometry and single-wavelength spectroscopic ellipsometry. A correspondence relativity connection between the deposition rate and technology was found. The chemical bonding structures and the content of CHx and CFx in the films are transformed and the optical band gap decreases monotonically with increasing temperature after annealing.The dielectric constant is increased with decreasing content of F in the films and the optical band gap is decreased with decreasing the content of H in the film.     

CO2激光焊接不锈钢光致等离子体动态特性分析

光致等离子体是CO2激光焊接中一个重要的物理现象，它与焊接的稳定性、焊接质量及能量利用率等都有密切的关系。利用高速摄像及光信号监测两种手段对等离子体的动态变化过程及其对焊接稳定性的影响进行了深入的研究。提出了等离子体的变化每个周期内分为四个阶段，而影响焊接稳定性的根本原因是等离子体在穿透与未穿透之间的波动。     

基于TRIZ的中频加热弯管机创新设计研究

中频加热弯管机是现在市场上较为流行的弯管机之一，由于设备本身是在对管材加热之后进行弯折，因此在加工过程中存在一些技术问题。通过对76个标准解的研究，对其流程进行了适当的改进，并将此理论应用于中频加热弯管机的设计中，对该产品提出了新的设计方案。     

红外线测温系统在矿用高强度圆环链连续中频热处理中的应用

阐述了在矿用高强度圆环链连续中频热处理中红外线测温的一些关键问题,建立了红外线在线测温系统,实现了对热处理工艺的精确控制.结果表明,采用红外线在线测温后,矿用高强度圆环链热处理后的合格率明显提高.     

Improvement in galvannealed coating of IF-HS steel strips by combined GDOES and colour-etching method

Galvannealed coating of high strength interstitial free (IF-HS) steel was characterised by Glow Discharge Optical Emission Spectroscopy (GDOES) and colour-etching techniques. Overalloyed galvannealed coatings with considerably high amount of Γ and Γ1 phases were detected in the first set of experiments. Necessary process modifications in galvannealing furnace were made to maximise the ä phase in the galvannealed coating, which was confirmed through GDOES and colour-etching techniques. As a result, an improvement in galvannealed product quality with a better powdering resistance property during forming has been achieved.