Friction and Wear Behavior of Deep Drawing Tools Using Volatile Lubricants Injected Through Laser-Drilled Micro-Holes

Reichardt, G.; Henn, Manuel; Reichle, Paul; Umlauf, Georg; Riedmüller, Kim Rouven; Weber, Rudolf; Barz, Jakob; Liewald, Mathias; Graf, Thomas; Tovar, Günter E. M.

doi:10.1007/s11837-021-05028-8

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…1a). The drilling strategy is described in detail in [18]. In short, a galvanometer scanner was used for spiral drilling in order to adapt the inlet diameter (Fig.…”

Section: Deep Drilling Of Dry Metal Forming Toolsmentioning

confidence: 99%

“…Dry metal forming using volatile lubricants is a recently developed approach to avoid the usage of synthetic and mineral oils in deep drawing processes. Instead, liquid carbon dioxide is introduced through microholes in the tool as a volatile lubricant under high pressure directly into the friction zones between the deep-drawing tool and the sheet metal [17,18]. The great challenge is to drill several hundred microholes into one deep drawing tool in a reasonable amount of time through hardened tool steel several millimeters thick without softening the surrounding material, while also achieving microholes with a conical shape.…”

Section: Deep Drilling Of Dry Metal Forming Toolsmentioning

confidence: 99%

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Ultrafast laser applications in the kW‐class

Holder

Henn²,

Peter³

et al. 2022

PhotonicsViews

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Ultrafast lasers are an excellent tool for processing almost all materials and for micromachining structures and geometries with sizes ranging from nanometers to millimeters. Their only weakness, the low average power of the beam source and therefore the lack of potential for high throughput, disappeared with the development of ultrafast lasers with average powers exceeding 1 kW. With the high average power, a new challenge has emerged for systems engineering and process development: achieving high throughput micromachining with high average power ultrafast lasers while maintaining high quality.

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“…1a). The drilling strategy is described in detail in [18]. In short, a galvanometer scanner was used for spiral drilling in order to adapt the inlet diameter (Fig.…”

Section: Deep Drilling Of Dry Metal Forming Toolsmentioning

confidence: 99%

Section: Deep Drilling Of Dry Metal Forming Toolsmentioning

confidence: 99%

Ultrafast laser applications in the kW‐class

Holder

Henn²,

Peter³

et al. 2022

PhotonicsViews

Self Cite

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“…Research projects on the influence of parameters such as blocking force and die geometry on the quality of stamping products, such as limiting earing height, wrinkling, and tearing [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16]. Research on the effects of friction to improve drawing efficiency has been published [17], [18], [19], [20], [21], [22], [23], [24], [25]. The influence of material parameters on the quality of stamping products has been reported [26].…”

Section: Introductionmentioning

confidence: 99%

Research on Deep Drawing Technology for Tiny Parts Applied in the Electrical-Electronic Industry

Duy,

Anh,

Sinh

et al. 2024

Int. J. Adv. Sci. Eng. Inf. Technol.

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Meso-and microforming is a technology to shape parts from extremely small metal billets. Parts with geometric dimensions are a few millimetres to a few micrometres. With the rapid development of the electrical-electronics industry and biomedical engineering, the technology of forming microscopic parts has been researched and applied because of its efficiency, accuracy, and high productivity. Deep drawing is an operation that turns flat sheet metal blanks into hollow, open-mouth parts. It is an essential process in sheet metal stamping. Micro deep drawing is one of the micro-shaping technologies that has been widely studied and applied in recent years. However, the bases for calculating technological and geometrical parameters in the micro-deep drawing have not yet been analyzed and evaluated in detail. Therefore, this paper has proposed a theoretical basis combined with simulation applied to the design of technology to manufacture a connector head part drawing die with a diameter of 300µm and height of 1500µm using materials SUS304 material. Numerical simulation also allows evaluation of the stamping part's internal stress state, the ability to pull the workpiece into the die, and the thickness distribution on the product wall. Experimental research has also verified that, with the determined parameters, the stamping parts meet the quality requirements. This indicates the proposed calculation methods for the tiny deep drawing operation are entirely suitable. The results of this research can be wholly applied to the production of micro-sized cylindrical cup parts using the deep drawing method.

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“…Nowadays, novel tribological systems are being studied, such as using volatile medium-like liquid carbon dioxide (CO 2 ) and gaseous nitrogen, directly introduced into the friction zones during deep drawing. These alternatives aim to reduce environmental impacts and eliminate the need for postforming cleaning processes [15]. Good adhesion and homogeneity of the lubricant on the surface of the sheet must also be ensured from application through to transport, storage and processing.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Friction Properties of GI Steel Plates with Various Surface Treatments

Tomáš,

Németh,

Evin

et al. 2024

Lubricants

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This article presents the improved properties of GI (hot-dip galvanized) steel plates in combination with a special permanent surface treatment. The substrate used was hot-dip galvanized deep-drawn steel sheets of grade DX56D + Z. Subsequently, various surface treatments were applied to their surface. The coefficient of friction of the metal sheets without surface treatment, with a temporary surface treatment called passivation, and a thin organic coating (TOC) based on hydroxyl resins dissolved in water, Ti and Cr3+ were determined by a cup test. The surface quality and corrosion resistance of all tested samples were also determined by exposing them for up to 288 h in an atmosphere of neutral salt spray. The surface microgeometry parameters Ra, RPc and Rz(I), which have a significant influence on the pressing process itself, were also determined. The TOC deposited on the Zn substrate was the only one to exhibit excellent lubrication and anticorrosion properties, resulting in the lowest surface microgeometry values owing to the uniform and continuous layer of the thin organic coating compared to the GI substrate and passivation surface treatment, respectively.

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Friction and Wear Behavior of Deep Drawing Tools Using Volatile Lubricants Injected Through Laser-Drilled Micro-Holes

Cited by 7 publications

References 11 publications

Ultrafast laser applications in the kW‐class

Ultrafast laser applications in the kW‐class

Research on Deep Drawing Technology for Tiny Parts Applied in the Electrical-Electronic Industry

Comparison of Friction Properties of GI Steel Plates with Various Surface Treatments

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