用聚合物水溶液淬火

IF 0.3 Q4 THERMODYNAMICS
T. Lübben, F. Frerichs
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引用次数: 0

摘要

与传统的油淬火相比,聚合物水溶液淬火具有明显的优点。其中包括良好的环境性能和在油淬和水淬之间调节淬火性能的可能性。然而,也必须考虑到关键方面。用聚合物溶液淬火钢件时,会出现“类爆炸”现象,往往伴随着较大的冷却速率变化。这些“爆炸”会导致淬火槽内产生压力波和振动,长此下去甚至会破坏淬火槽的焊缝。在一个研究项目的框架内,在实验室淬火浴和工业淬火槽中进行了实验研究。聚合物类型、入射流类型、流速、浴池温度和试验轴尺寸均有变化。进行了轴内近表面温度测量,以表征所产生的淬火过程。同时,通过电导率测量、音频和视频记录来定位表面上的绝缘膜及其坍塌。为了系统化和表征大量的测量结果,定义了冷却过程的特征类型和表征的特征数,并将在本文中提出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Quenching with Aqueous Polymer Solutions
Abstract Quenching with aqueous polymer solutions has some distinct advantages over classical oil quenching. Among these are the good environmental properties and the possibility to adjust the quenching performance between oil and water quenching. Nevertheless, critical aspects must also be taken into account. When quenching steel parts with polymer solutions, “explosion-like” phenomena can occur, often accompanied by large cooling rate changes. These “explosions” can lead to pressure waves and vibrations in the quenching tank, which in the long run can even destroy weld seams of the quenching tank. In the framework of a research project, experimental investigations were carried out in a laboratory quenching bath and in an industrial quenching tank. The polymer type, the type of incident flow, the flow velocity, the bath temperature and the size of the test shafts were varied. Near-surface temperature measurements inside the shafts were performed to characterize the resulting quenching processes. Simultaneously, electrical conductivity measurements and audio and video recordings were made to localize insulating films on the surface and their collapse. To systematize and characterize the large number of measurement results, characteristic types of cooling processes and characteristic numbers for their characterization were defined and will be presented in this paper.
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来源期刊
CiteScore
1.50
自引率
33.30%
发文量
43
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