冰箱门面板冲压工艺分析及模具设计

分析冰箱门面板的冲压工艺,介绍模具设计中应注意的问题及滚压式结构的特点     

Role of platinum in the Na2SO4-Induced hot corrosion resistance of aluminum duffusion coatings

Electrochemical corrosion measurements have been carried out with Pt-containing and Pt-free Al-diffusion coatings on IN 738 LC in a 90Na₂SO₄+ 10K₂SO₄ (mol%) melt at 1173 K. Pt improves the resistance to basic fluxing while there are no significant differences between both coating types in their resistance to acidic fluxing. The corrosion resistance of the Pt-containing coating is also higher in the passive potential region where protective scales rich in Al₂O₃ are formed. The reason for the different behavior of both coating types appears to be related to the high corrosion resistance of the Pt-rich surface layer of the coating and an increased Al₂O₃ content in the scale of the Pt-containing type.     

多孔薄壁扁管连续挤压模的研制

介绍了连续挤压模的生产工艺过程 ,模具主要结构及设计参数 ,分析了生产中存在的问题以及采取的措施 ,充分发挥了连续挤压设备的潜力 ,扩大了产品品种     

Effect of Hot Band Annealing on Magnetic Properties in 3% Si Grain‐oriented Electrical Steels

Hot band annealing is known to be a prerequisite for good magnetic properties irrespective of manufacturing methods in grain‐oriented Fe‐3 wt.% Si electrical steels. In this study, the effects of hot band annealing on magnetic properties were investigated in 3% grain‐oriented electrical steels of low soluble AI contents and one‐stage cold rolling. Microstructure and precipitate distribution were compared with hot band annealing conditions. Secondary recrystallization behaviour with hot band annealing condition was also discussed.     

Aspects of microstructure in low carbon steels produced by the CSP process

The solidification structure, microstructure evolution during rolling and precipitates with nanometers in dimension of the low carbon steels produced by CSP process with thin slabs have been studied in recent years. Important differences in microstructure and mechanical properties between the CSP products and the conventional one were observed. These differences may arise from the much rapider solidification rate and cooling rate after casting of the thin slabs. Some aspects of the microstructure for the low carbon steels of the CSP thin slabs are summarized and compared with the conventional one.     

镀锌产品表面粗糙度影响因素的研究

以马钢第四钢轧总厂1#镀锌线的产品为研究对象,通过大量的数据检测,分析了热浸镀锌产品带钢表面粗糙度的影响因素,并得出变化规律。这些规律可以运用到实际生产中来对带钢表面的粗糙度进行计算和控制。     

开关磁阻电机调速系统在莱钢热轧带钢中的应用

文章介绍了开关磁阻电机调速系统的结构、原理及在莱钢轧钢厂热轧带钢生产线上的应用。     

热轧钢管加速冷却自动检测及控制系统的研究

介绍了在热轧钢管加速冷却的工艺过程中如何建立自动调节系统，以及用来实现自动检测和控制所需要的软、硬件的设计思想和设计方法，对研究和试验过程中新的加速冷却工艺所取得的实际效果进行了全面分析。     

热镀锌钢板生产概述：第五讲 热镀锌钢板生产工艺简介

钢板热镀锌自实现了工业化生产以来,由单张多板热镀锌,线外退火的钢板热镀锌到在线退火连续热镀锌,其生产工艺及设备经历了不断的革新和进步,介绍了各种镀锌方法的工艺及应用情况。     

SZL系列快装热水锅炉水循环系统故障原因的分析及改进措施

分析SZL系列快装热水锅炉水循环系统故障的原因,根据工作实践和相关理论,提出改进意见．