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Analysis of the functional properties in the bore sub-surface zone during BTA deep-hole drilling

机译：BTA深孔钻井期间孔子表面区功能特性分析

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The BTA deep hole drilling process is analysed to determine the relationships between process-structure and residual stress as a function of surface conditioning during the machining process. The residual stresses, the hardness and structural changes in the microstructure are used as indicators for a following process control in order to generate an improved component service life or reliability. In the first tests, the deep-drilled samples are examined with regard to residual stresses, bore tolerances, microstructure and hardness in the sub-surface zone. Furthermore, the specimens will be subjected to a heat treatment to establish a stress-free microstructure as a reference state for the magnetic residual stress measurement.
机译：分析BTA深孔钻井过程以确定加工过程中的表面调节的过程结构和残余应力之间的关系。微结构中的残余应力，硬度和结构变化用作以下过程控制的指示器，以便产生改进的组件使用寿命或可靠性。在第一次测试中，关于在子​​表面区的残余应力，孔耐受，微观结构和硬度方面检查深钻的样品。此外，样品将受到热处理以建立无应力微结构作为用于磁性残余应力测量的参考状态。

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