共查询到19条相似文献,搜索用时 109 毫秒
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钛合金具有强度高、热强度好和抗蚀性强等优点,已广泛应用于航空、航天、航海、化工等工业重要领域。由于钛合金的特性,其切削加工性较差,属于难加工材料,通过多年钛合金加工的生产实践总结研究,探索出一些合理的车削加工刀具几何角度及切削参数选择原则及切削注意事项,为钛合金的切削加工提供有益的参考。 相似文献
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难加工轻合金振动切削技术 总被引:1,自引:0,他引:1
难加工轻合金如钛合金、硅铝合金、铝基复合材料的车削、钻削、攻螺纹工艺需要进一步发展,振动切削新技术是提高难加工轻合金切削加工性的有效方法。本文对钛合金、铝合金、铝基复合材料的车削、攻螺纹进行了大量工艺试验研究,取得了良好的工艺效果,并研制出了各种实用化振动切削装备,实现了振动切削技术向轻合金领域的应用。 相似文献
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<正>钛合金质轻、强度高、耐腐蚀,是理想的航空航天材料,但其机械加工具有一定的难度.据有关著作论述,钛合金的切削加工性能介于不锈钢和高温合金之间;从加工方法上所表现的难易顺序为:攻丝、拉削、车螺纹、钻孔(非深孔)、铰削、刨削、车削.由此可知,在钛合金材料上攻丝和套扣是相当困难的工序.多年来,我厂在钛合金TC4的车削、铣削、钻削、磨削及螺纹加工方面积累了一定经验.尤其在小孔攻丝和小尺寸外螺纹的套制上,研制了专用丝锥和板牙,较好地解决了小尺寸钛合金的螺纹加工问题. 相似文献
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对α+β钛合金TC11进行车削工艺研究,采用无涂层、PVD Ti Al N涂层、金刚石涂层三种刀片在干式加工和MQL冷却状态下进行车削试验。研究不同刀具、冷却方式和加工参数对车削TC11钛合金切削力、切削温度、加工表面质量、刀具寿命和刀具磨损方式等影响规律。通过相关试验数据得出相关切削参数,为优选加工刀具提供参考。 相似文献
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钛合金切削性能的研究与应用 总被引:1,自引:0,他引:1
沈兴东 《机电产品开发与创新》2003,(5):65-67
本文阐述了钛合金的相对可切削性及钛合金切削加工的切削条件;在此基础上以车加工和孔加工为例说明了钛合金加工的应用。 相似文献
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This article correlates laboratory-based understanding in machining of titanium alloys with the industry based outputs and finds possible solutions to improve machining efficiency of titanium alloy Ti-6Al-4V. The machining outputs are explained based on different aspects of chip formation mechanism and practical issues faced by industries during titanium machining. This study also analyzed and linked the methods that effectively improve the machinability of titanium alloys. It is found that the deformation mechanism during machining of titanium alloys is complex and causes basic challenges, such as sawtooth chips, high temperature, high stress on cutting tool, high tool wear and undercut parts. These challenges are correlated and affected by each other. Sawtooth chips cause variation in cutting forces which results in high cyclic stress on cutting tools. On the other hand, low thermal conductivity of titanium alloy causes high temperature. These cause a favorable environment for high tool wear. Thus, improvements in machining titanium alloy depend mainly on overcoming the complexities associated with the inherent properties of this alloy. Vibration analysis kit, high pressure coolant, cryogenic cooling, thermally enhanced machining, hybrid machining and, use of high conductive cutting tool and tool holders improve the machinability of titanium alloy. 相似文献
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在研究了钛合金材料切削性能的基础上,针对钛合金的难加工性,选用了焊接式硬质合金刀具,并优化选择了不同的切削用量进行钻削试验。通过处理试验数据,确定了加工钛合金TC4的切削用量规律。 相似文献
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Comparison and analysis of main effect elements of machining distortion for aluminum alloy and titanium alloy aircraft monolithic component 总被引:1,自引:0,他引:1
Y. Yang M. Li K. R. Li 《The International Journal of Advanced Manufacturing Technology》2014,70(9-12):1803-1811
Main effect elements of machining distortion for aluminum alloy and titanium alloy aircraft monolithic component are investigated by finite element simulation and experiment. Based on an analysis of milling process characters, finite element models of machining distortion are developed. Considering the action of initial residual stress, finite element simulation and analysis of machining distortion for aluminum alloy aircraft monolithic component are performed. Initial residual stress, cutting loads, and coupling action of these two effect factors are taken into account, respectively, to perform finite element simulations of machining distortion for titanium alloy aircraft monolithic component. The finite element simulation results are compared with experiment results and found to be in good agreement, indicating the validation of the proposed finite element models. The research results show that the initial residual stress in the blank is the main effect element of machining distortion for aluminum alloy aircraft monolithic component, while cutting loads (including cutting force and temperature) are the main effect element of machining distortion for titanium alloy aircraft monolithic component. To decrease machining distortion of aluminum alloy aircraft monolithic component, the initial residual stress in the blank must be controlled first. Similarly, to decrease machining distortion of titanium alloy aircraft monolithic component, the cutting loads must be controlled first. 相似文献
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对钛合金精密零件加工工艺技术的研究,通过选用适合加工钛合金材料的刀具、切削要素,提高钛合金精密零件加工质量,通过制定合理的热处理参数及工艺流程消除零件加工应力,稳定零件加工尺寸,选用合适的定位方式消除零件的加工过定位,保证零件加工尺寸精度,试验表明此工艺加工方法可消除零件加工变形,稳定加工尺寸,使钛合金精密零件合格率达到95%以上,从而达到保证零件尺寸精度的技术要求。 相似文献
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根据对钛合金切削加工性的分析,针对钛合金切削刀具的主要问题,提出了从刀具入手解决钛合金切削加工问题的思路,以及合理选择刀具材料、确定刀具几何参数、刃磨刀具、冷却润滑的一般原则及方法。 相似文献