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

Pereira, Alejandro; Hernández, P.; Martínez, Javier Martínez; Pérez, José Antonio; Mathia, T.

doi:10.1002/sca.21083

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…As is well known, the parameter Sa is inadequate to study wear, because it does not provide spatial structure information and data about the differences between peaks and valleys [24,26]. [25] [18].…”

Section: Resultsmentioning

confidence: 99%

Topographic Wear Monitoring of the Interface Tool/Workpiece in Milling AISI H13 Steel

Pereira

Martínez

Prado

et al. 2014

AMR

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The wear of TiCN coating carbide cutting tools (Sandvik® Grade 1010 and 4220) in different hard-milling machining conditions was monitored, analyzed, and discussed for AISI H13 steel. This material is commonly used in the forge industry in order to optimize the manufacturing process according to a qualimetry/cost compromise criterion. AISI H13 steel generally is used in modern production for high wear-resistant dies and molds. One of the most basic and primary geometric shapes in the manufacture of molds and die cavities is the geometry known as "inclined plane." Experimental investigations were carried out on a "mold model" design with the aim of analyzing and optimizing the principal manufacturing conditions. The tests are dependent on manufacturing factors, particularly their impactin a complex tribological process. Five clearly defined different surfaces of the hardened AISI H13 steel model mold, with appropriate geometries were studied; i) vertical downward; ii) curved downward; iii) horizontal; iv) curved upward; and v) vertical upward.The analysis of cutting tool wear during this process was based on computerized measurements of visually observable wear and power consumption. Morphological investigations of the surface topography for the cutting tool, as well as of the work-piece surfaces, were systematically carried out. Moreover, the interactions with simultaneously measured energy consumption during the process are also explicated in the present study and therefore tentative methods to optimize hard-milling machining are offered.

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Section: Resultsmentioning

confidence: 99%

Topographic Wear Monitoring of the Interface Tool/Workpiece in Milling AISI H13 Steel

Pereira

Martínez

Prado

et al. 2014

AMR

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“…To take advantage of the base of the mold installed in the injection machine, the mold insert size selected was 80 × 80 × 21 mm. Aluminum 5083 was chosen for this study because it does not involve long production runs [ 26 ]. Figure 2 depicts the aluminum mold insert and the mold base, specific to this project.…”

Section: Methodsmentioning

confidence: 99%

Tomographic and Tension Analysis of Polypropylene Reinforced with Carbon Fiber Fabric by Injection Molding

Wieczorowski,

Pereira,

Prado

et al. 2023

Materials

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The use of thermoplastic materials has had significant growth in recent years. However, with great mechanical requirements, thermoplastics have limitations to their use. To improve these restrictions, these materials are reinforced to obtain better properties. Polypropylene is one of the most versatile polymers and is used in almost all modern industries. Thus, the aim of this study is to create composite materials that offer performance for various industrial fields using carbon fiber fabric reinforcement, which is an inexpensive material widely used by the aerospace, automotive, and marine industries. The samples are produced by the over-injection molding of polypropylene. The investigation is focused on the impact of two critical control parameters in the injection molding process: temperature and pressure. Twelve experiments have therefore been considered, taking into account the combination of three factors: the presence or absence of carbon fiber fabric reinforcement, three levels of temperature (200 °C, 220 °C, and 240 °C), and two injection pressures (5000 kPa and 10,000 kPa). To evaluate the influence of these factors, three analyses were carried out: first, on the samples’ shrinkage using a portable metrology-grade 3D laser scanner; second, on the internal defects using computed tomography (CT); and third, on the mechanical properties with tensile tests. From the results obtained, it is observed that the mold shrinkage fell slightly when PP samples were reinforced with carbon fiber, with both materials (PP and carbon-fiber-reinforced PP) having linear behavior with temperature. It is also noticed that polypropylene behaves as a crystalline material when processed at higher temperatures and pressures. From tests on the mechanical properties, it is concluded that the mean yield strength of PP-CF for injection temperatures of 220 °C and 240 °C represents an increase of 43% compared to the non-reinforced material.

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“…flow of liquids in inserts with conformal cooling or in tool bodies with cooling channels, the surface obliqueness Ssk, is one of the most important parameters due to the effect of roughness shortening [13]. After printing the samples have been subjected to machining under production conditions on the machine tool MAZAK QTS 250M.…”

Section: Matec Web Of Conferencesmentioning

confidence: 99%

Investigations of Surface Topography of Hot Working Tool Steel Manufactured with the Use of 3D Print

2017

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Abstract. The paper presents the possibilities of 3D printing of chosen hot working tool steel for manufacturing ready made parts. Results of examination of the surface topography of material manufactured by the technology Laser CUSING®B (Laser melting with metals) on the machine, Concept Laser M1 3D printing of metal parts has the potential to revolutionize the market of manufacturing and supplying parts. It makes it possible to dissipate manufacturing and to produce parts on request at lower cost and less energy consumption. The parameters of the surface topography of the hot working tool steel directly after printing can differ depending on the distance from the base plate. The differences of surface roughness values can amount from 32% to 85% for Ra and from 59% to 85% for Rz in comparison of the sample bottom to its top.

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

Cited by 11 publications

References 16 publications

Topographic Wear Monitoring of the Interface Tool/Workpiece in Milling AISI H13 Steel

Topographic Wear Monitoring of the Interface Tool/Workpiece in Milling AISI H13 Steel

Tomographic and Tension Analysis of Polypropylene Reinforced with Carbon Fiber Fabric by Injection Molding

Investigations of Surface Topography of Hot Working Tool Steel Manufactured with the Use of 3D Print

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