Study of the influence of high-pressure cooling on machining mid-carbon steel
高壓噴流 ； 高溫 ； 難切削材 ； 萊頓弗羅斯特現象 ； high-pressure ； Leidenfrost effect
|Volume or Term/Year and Month of Publication||
|Academic Degree Category||
Machine tools in the computer subsidies design and control after the emergence of significant progress, relying on computer computing can exclude many people caused by the impact of errors. However, the precision and yield of parts are well constrained by the physical phenomena. The scope of the influence includes the material of the workpiece, the type of the tool and the high temperature accompanying the cutting process. Which cutting the tool and the workpiece produced by the high temperature is troubled by the industry for a long time. In addition to the high temperature will be bad tools and parts, and secondly because of the material characteristics of the parts lead to too long segment, sticky and other phenomena, serious may produce cuttings and tool life shortages and other issues. To this end in the process of cutting spilled cutting fluid is a widely used in the industry solution, by cutting fluid lubrication tool and workpiece contact points, thereby reducing the hot spot temperature and reduce the heat caused by various problems. However, the use of cutting fluid is still its bottleneck, according to the material of the workpiece may be, when the cutting rate reaches a certain level, the cutting fluid can produce the effect is limited. In addition, when the temperature of the hot spot is too high, it will produce the Leiden Frost phenomenon with the cutting fluid, and the resulting vapor film will prevent the cutting fluid from adhering to the hot spot. When the temperature is not cool and the high speed cutting is maintained, And tool life shortages and other problems emerge again, forced to reduce the cutting rate or feed the frequency, thus reducing the overall capacity. In this paper, the paper analyzes the different chips produced by high pressure jet and high pressure jet in different materials, such as forging aluminum, nickel-based alloy, titanium alloy and S48C medium carbon steel. Finally, The use of S48C in the continuous processing of carbon steel, record the size of the changes in processing and tool life, the use of high-pressure jet processing, to confirm the use of high-pressure jet, the cutting fluid on the tool and processing components can be cooling solution, through High pressure means to make cutting fluid break through the Leiden Frost phenomenon of the vapor film, so that it can directly affect the hot spots, and thus achieve the effect of reducing the temperature, supporting the use of high pressure jet can improve the processing quality and tool life verification.
工程學 > 機械工程