Friction Conditions during the Wear of Injection Mold Functional Parts in Contact with Polymer Composites

Brezinová, Janette; Guzanová, Anna

doi:10.1177/0731684409341675

Cited by 21 publications

(20 citation statements)

References 11 publications

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“…It is this mutual, relative motion of self‐orienting filler and mold wall that causes adhesive and abrasive wear of injection molds. Wear rate is affected predominantly by the type of polymer used, the shape of the mold and its dimensional complexity, the segmentation and required precision of the mold, and the temperature and pressure exerted by the injected polymer (Michael et al ., ; Brezinova and Guzanova, ).…”

Section: Introductionmentioning

confidence: 98%

Surface topographic characterization for polyamide composite injection molds made of aluminum and copper alloys

Pereira

Hernández²,

Martínez

et al. 2013

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In order to ensure flexibility and rapid new product development, the mold industry made use of soft materials for cavity inserts in injection molds. However, materials of this kind are prone to wear. This article analyzes the topographic characterization of the surface and wear processes in injection molds cavities. Two materials have been used to produce the cavities: aluminum alloy EN AW‐6082 T4 and copper alloy Cu Zn39 Pb3. The surface topography was measured with the use of optical interferometry profiling technology; roughness and surface parameters were determined according to ISO 4287, ISO 25178, and EUR 15178N. In order to complete this research, an experimental part with different thicknesses and shapes was designed, and cavity inserts of aluminum and copper were made. Polyamide PA6, with 30% fiberglass reinforcement, was employed in the experimental procedure. Measurements of cavity mold surfaces were performed after 9,200 cycles on each mold and at different locations on the mold. The surface measurement was made with a white light vertical scanning interferometry, also known as coherence scanning interferometry (ISO DIS 25178‐604). The results are analyzed and differences between the two types of cavity inserts materials are discussed.

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Section: Introductionmentioning

confidence: 98%

Surface topographic characterization for polyamide composite injection molds made of aluminum and copper alloys

Pereira

Hernández²,

Martínez

et al. 2013

Scanning

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“…Polypropylene (PP) is a common material that finds application in areas such as home appliances, automobile air ducting parts, pipes and many others [1,2], where the injection moulding of thermoplastic parts with tailored wetting properties of their surfaces is of increasing interest. Water repellence observed in nature, e.g.…”

Section: Introductionmentioning

confidence: 99%

Lotus-Leaf Inspired Surfaces: Hydrophobicity Evolution of Replicas Due to Mechanical Cleaning and Mold Wear

Romano

García‐Girón

Penchev

et al. 2020

Journal of Micro and Nano-Manufacturing

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Inspired from the low wetting properties of Lotus leaves, the fabrication of dual micro/nanoscale topographies is of interest to many applications. In this research, superhydrophobic surfaces are fabricated by a process chain combining ultrashort pulsed laser texturing of steel inserts and injection molding to produce textured polypropylene (PP) parts. This manufacturing route is very promising and could be economically viable for mass production of polymeric parts with superhydrophobic properties. However, surface damages, such as wear and abrasion phenomena, can be detrimental to the attractive wetting properties of replicated textured surfaces. Therefore, the final product lifespan is investigated using mechanical cleaning of textured PP surfaces with multipurpose cloths following the ASTM D3450 standard. Second, the surface damage of replication masters after 350 injection molding cycles with glass-fiber-reinforced PP, especially to intensify mold wear, was investigated. In both cases, the degradation of the dual-scale surface textures had a clear impact on surface topography of the replicas and thus on their wetting properties, too.

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“…Moreover, high temperature is increasing the NO emissions and too high in-cylinder pressure is able to damage the engine. [19][20][21] Furthermore, if the pre-ignition is rising, there is also at disposal a longer time for heat transfer and vice versa, if the ignition moment is closer to the TDC, the in-cylinder pressure and the cylinder temperature are reduced, and the active work of the gas is lower. In this case, reduction of the in-cylinder pressure and the cylinder temperature is able to cause an incomplete combustion.…”

Section: Minimization Of the Fuel Consumptionmentioning

confidence: 99%

Autonomous vehicle with internal combustion drive based on the homogeneous charge compression ignition technology

Puškár

Fábián

Kádárová

et al. 2017

International Journal of Advanced Robotic Systems

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The actual dynamical development of the information technologies is also typical for the area of automotive industry. The autonomous control technology is moving the motorcars into the mobile robot category. The autonomous mobile robotic vehicles, together with new possibilities offered thanks to the mobility services, are improving not only comfort but also safety of transport. Nowadays, application of the homogeneous charge compression ignition technology represents a great progress made in the field of internal combustion drive, taking into consideration more and more rigorous emission standards. This article deals with principles and architecture of the autonomous control, with hybrid drive systems as well as it analyses advantages of the homogeneous charge compression ignition technology, taking into consideration the obtained experimental results.

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Friction Conditions during the Wear of Injection Mold Functional Parts in Contact with Polymer Composites

Cited by 21 publications

References 11 publications

Surface topographic characterization for polyamide composite injection molds made of aluminum and copper alloys

Surface topographic characterization for polyamide composite injection molds made of aluminum and copper alloys

Lotus-Leaf Inspired Surfaces: Hydrophobicity Evolution of Replicas Due to Mechanical Cleaning and Mold Wear

Autonomous vehicle with internal combustion drive based on the homogeneous charge compression ignition technology

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