Material removal simulation for steel mould polishing

Almeida, Rui; Börret, Rainer; Rimkus, W.; Harrison, David K.; Silva, A.K.M. De

doi:10.1080/21693277.2017.1374889

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…It can be seen that P2-Coating fabricated with ultrasonic vibration at power of 400 W had the best wear resistance. According to the theory of Holm-Archard wear law [28], under the condition of constant load and sliding distance, the wear volume loss is inversely proportional to the material surface hardness and directly proportional to the coefficient of friction, that is, the greater the material surface hardness and the smaller the friction coefficient, the less the wear volume loss, as shown in Equation ( 2).…”

Section: Effect Of Ultrasonic Vibration On Micro-hardness and Wear Resistance Of The Coatingsmentioning

confidence: 99%

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Chen

Deng

et al. 2022

Coatings

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Laser cladding coating has many advantages in surface modification, such as a small heat-affected zone, and good metallurgical bonding. However, some serious problems such as pores, and poor forming quality still exist in the coating. To suppress these problems, a novel process of ultrasonic vibration-assisted laser cladding process was adopted to in-situ synthesize TiC/TiB composite ceramic coating on the surface of titanium alloy. Results showed that the introduction of ultrasonic vibration effectively improved the surface topography of the coating, reduced the number of pores in the coating, refined the crystal grains of the coating, decreased the residual tensile stress in the coating, and increased the micro-hardness of the coating. The tribological properties of the coating were significantly improved by the ultrasonic vibration, the wear resistance of the coating fabricated with ultrasonic vibration at power of 400 W increased about 1.2 times compared with the coating fabricated without ultrasonic vibration, and the friction coefficient decreased by 50%.

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Section: Effect Of Ultrasonic Vibration On Micro-hardness and Wear Resistance Of The Coatingsmentioning

confidence: 99%

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Chen

Deng

et al. 2022

Coatings

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“…After considering the statements above, it is assumed that both equations have some similarities. The Holm-Archard equation was implemented during the development of a simulation model able to predict the material removal's depth (Almeida & et al, 2017b). The same equation is used for the simulation of the polishing tool function, which represents the material removal through time during the polishing correction technique.…”

Section: Materials Removal Theorymentioning

confidence: 99%

Geometrical shape improvement of steel moulds by robot polishing process for polymer optic replication

Almeida

Börret

Pohl

et al. 2018

Production & Manufacturing Research

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The quality of injection-moulded polymer optic parts depends on the surface finish of the respective mould. In order to improve the surface finish of the mould, it is important to use a tactical material removal, which allows a controlled correction of the mould's surface geometry. The aim of this work is to use a polishing correction technique to improve and correct the flatness of hardened steel samples in order to reduce the need for manual polishing. A polishing tool function is simulated from the contact between the tool and the hardened steel sample and used to determine the material removal rate per time. A feed profile is calculated, which allows the industrial robot to tactically control the material removal. It is observed that a correction improves the surface's flatness by up to 70%. ARTICLE HISTORY

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“…It is very convincing that this method is very time-consuming due to the complex finite element simulation involved. Almeida et al [19,20] proposed an MR simulation method for mold polishing, which also relied on the finite element simulation. In the author's previous work [21], an analytical model of contact pressure between the tilted polishing pad and workpiece was deduced through large numbers of finite element simulation experiments, and an MR simulation method based on the mesh model was advanced.…”

Section: Introductionmentioning

confidence: 99%

Rapid prediction of multi-directionality of polished surface topography based on angular spectrum

Wang

Fang

Xie

et al. 2022

Int J Adv Manuf Technol

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The multi-directionality of polished surface topography (PST) is a key index to characterize the polished surface quality and surface integrity, and its prediction before actual machining is of great significance to the toolpath planning, verification, and optimization. However, most related works reported thus far focus mainly on the material removal modeling but few on the prediction of multi-directionality. Hence, this paper proposes a fast method to precisely predict the multi-directionality of the PST for the pad-polishing process of freeform surfaces. With this method, a pressure distribution model and a material removal profile (MRP) model are first established, in which the MRP is founded subject to the quadratic function distribution. Then, to avoid the time-consuming integral operation in the MRP model, an artificial neural network is developed to fit the quadratic function of MRP. With this model, a multi-directionality prediction algorithm is further proposed based on the angular spectrum of the PST. Simulation and experimental studies have shown that the proposed method can predict the multi-directionality of the PST with very high accuracy and efficiency for various freeform surface polishing, showing great application potential in promoting the efficiency of toolpath planning and optimization to obtain isotropic PST.

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Material removal simulation for steel mould polishing

Cited by 8 publications

References 5 publications

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Geometrical shape improvement of steel moulds by robot polishing process for polymer optic replication

Rapid prediction of multi-directionality of polished surface topography based on angular spectrum

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