Oleksik Valentin, Trzepieciński Tomasz, Szpunar Marcin, Chodoła Łukasz, Ficek Daniel, Szczęsny Ireneusz
Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania.
Department of Manufacturing and Production Engineering, Faculty of Mechanical Engineering and Aerionautics, Rzeszow University of Technology, al. Powst. Warszawy 8, 35-959 Rzeszów, Poland.
Materials (Basel). 2021 Oct 25;14(21):6372. doi: 10.3390/ma14216372.
Incremental sheet forming of titanium and its alloys has a significant role in modern manufacturing techniques because it allows for the production of high-quality products with complex shapes at low production costs. Stamping processes are a major contributor to plastic working techniques in industries such as automotive, aerospace and medicine. This article reviews the development of the single-point incremental forming (SPIF) technique in titanium and its alloys. Problems of a tribological and microstructural nature that make it difficult to obtain components with the desired geometric and shape accuracy are discussed. Great emphasis is placed on current trends in SPIF of difficult-to-form α-, α + β- and β-type titanium alloys. Potential uses of SPIF for forming products in various industries are also indicated, with a particular focus on medical applications. The conclusions of the review provide a structured guideline for scientists and practitioners working on incremental forming of titanium and titanium alloy sheets. One of the ways to increase the formability and minimize the springback of titanium alloys is to treat them at elevated temperatures. The main approaches developed for introducing temperature into a workpiece are friction heating, electrical heating and laser heating. The selection of an appropriate lubricant is a key aspect of the forming process of titanium and its alloys, which exhibit unfavorable tribological properties such as high adhesion and a tendency to adhesive wear. A review of the literature showed that there are insufficient investigations into the synergistic effect of rotational speed and tool rotation direction on the surface roughness of workpieces.
钛及其合金的增量板材成形在现代制造技术中具有重要作用，因为它能够以低成本生产出形状复杂的高质量产品。冲压工艺是汽车、航空航天和医疗等行业塑性加工技术的主要组成部分。本文综述了钛及其合金单点增量成形（SPIF）技术的发展。讨论了一些摩擦学和微观结构方面的问题，这些问题使得难以获得具有所需几何形状和尺寸精度的零件。重点介绍了难成形的α型、α+β型和β型钛合金SPIF的当前发展趋势。还指出了SPIF在各行业产品成形中的潜在用途，特别关注医疗应用。综述的结论为从事钛及钛合金板材增量成形的科学家和从业者提供了结构化的指导方针。提高钛合金成形性并最小化回弹的方法之一是在高温下对其进行处理。为将温度引入工件而开发的主要方法有摩擦加热、电加热和激光加热。选择合适的润滑剂是钛及其合金成形过程的一个关键方面，钛及其合金表现出不利的摩擦学性能，如高附着力和粘着磨损倾向。对文献的综述表明，关于转速和刀具旋转方向对工件表面粗糙度的协同作用的研究不足。
