国产中频加热电源装置在管端加厚机上的应用

宝山钢铁股份有限公司钢管分公司管端加厚机的管端局部加热装置原采用德国提供的中频感应加热电源装置,因长期运行致使其性能老化,不能满足生产要求,现已采用国产装置替代。介绍了该国产装置的组成、特点及控制回路原理。实践证明,国产装置同样具有稳定可靠、控制精确、保护功能齐全等特点。使用该国产装置已取得较好的经济效果。     

采用12Cr1MoV转炉钢生产高压锅炉钢管

介绍了转炉冶炼高压锅炉管钢工艺和采用12Cr1MoV 转炉钢生产的高压锅炉钢管性能。性能试验表明,转炉钢可以用于高压锅炉钢管生产,其实物质量与电炉钢相当。     

JP级钢管磷化的研究

在实验和优化的基础上，阐述了中温磷化的条件。首先改进了磷化液的组成及配制工艺，该磷化液主要由ZnO，HNO3，H3PO4及适量的催化剂组成，组成简单。然后对Q235，Q345，J-55，N-80，P-110等不同钢种进行实验，并对中温条件下不同钢种的磷化膜进行了性能测试及参数的测定。结果表明，磷化效果完全达到工业设计要求。与原有的高温磷化工艺相比，该工艺能耗低、工艺流程简化，并能清洁生产。     

张力减径过程快速仿真系统建模问题的研究

在空间解析曲面模型理论基础上,采用三维弹塑性大变形有限元方法,建立了复杂几何形体动态约束模型,解决了张力减径过程中的矩阵变换、模型转换和多机架全系统仿真的问题。     

双金属复合管冷斜轧工艺的成形过程分析

本文在冷斜轧理论研究的基础上 ,探讨了冷斜轧复合工艺生产双金属管的可行性。文中首先建立了考虑应变、应变率、润滑条件和材料加工硬化等因素的钢管冷斜轧过程的数学模型 ,然后利用塑性成形问题的刚塑性有限元算法计算了钢管冷斜轧过程中塑性变形区的各种分布量 ,如速度场、应力、应变场等 ,其结果对选择合理的工艺参数、生产大直径双金属复合管具有重要意义。     

Deformation behavior ofA6063 tube with initial thickness deviation in free hydraulic bulging

Experiment on seamless tubes of aluminum alloy A6063 with initial thickness deviation of 0-20% was conducted through a free hydraulic bulging with tube ends free. The influence of initial thickness deviation on the cross-section profile, thickness distribution, maximum internal pressure and maximum radial expansion was investigated. FEM simulation was also performed in order to examine and help explaining the experimental results. The results indicate that the internal pressure and maximum internal pressure appear to be little influenced by the initial thickness deviation, and that the cross-section profile of the bulged tube changes diversely and can not be a perfect circle. The results also suggest that the increase in initial thickness deviation may lead to a remarkable decrease in maximum radial expansion, and a rapid increase in thickness deviation and the center eccentricity of the inner and outer profiles.     

无芯薄壁长矩形管弯曲模设计

介绍了避免无填料和衬芯的长矩形管弯曲成形后管壁出现内陷及折痕的工艺,模具结构特点及设计中注意的事项,模具结构合理,便于加工、装配及使用。对该类工件的弯曲成形有一定的参考价值。     

Ultrahigh performance of Ti-based glassy alloy tube sensor for Coriolis mass flowmeter

Bulk metallic glasses （BMGs） have potential applications for both structural and functional components owing to their good mechanical properties. With the aim of demonstrating great engineering value of BMGs, a direct melt-forming technique based on suction casting for the production of glassy alloy tubes was developed. The fabrication, structure, geometry, properties and sensor performance of the tubes were examined. The results show that the Coriolis mass flowmeters using the Ti-based glassy alloy sensor tube exhibit excellent measurement sensitivity, viz. 28.5 times higher than that of the conventional flowmeter manufactured using stainless steel （SUS316） tube.     

钢管斜轧延伸时辊型对附加变形的影响

用电子束标迹法研究了钢管斜轧延伸时辊型对附加变形的影响，研究表明，锥形辊与鼓形辊相比，可使附加变形显著减少。     

X56钢级海底无缝管线管的研制

总结了X56钢级海底无缝管线管产品的国产化研发工作,阐述了微合金化钢种设计的思路和方法,归纳了生产组织及工艺控制要点,介绍了生产工序与流程,提出了进一步改进的观点与建议。