In Search of the Perfect Sheet Metal Forming Tribometer

Schell, Lukas; Groche, Peter

doi:10.1007/978-3-030-75381-8_7

Cited by 7 publications

(10 citation statements)

References 35 publications

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“…In summary, the combination of strip drawing tests, FE forming simulations, and forming trials improves the overall understanding of the challenges in the design of temperature‐supported aluminum sheet metal forming processes. Considering the extensive tribometer developments for room temperature sheet metal forming, [ 9 ] it can be stated that there is still a lot of research to be done in the field of tribological assessment of temperature‐supported aluminum forming processes.…”

Section: Discussionmentioning

confidence: 99%

“…An overview of these tribometers can be found in recent literature. [8,9] The tribometers for investigating warm and hot sheet metal forming can be classified in two categories: oscillating tribometers and strip drawing tests. Investigations on oscillating tribometers are mainly limited to dry condition [10] or the use of long-term temperature-stable lubricants like boron nitride, [11] boron nitride and graphite [12,13] or a combination of both.…”

Section: Introductionmentioning

confidence: 99%

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Tribology in Warm and Hot Aluminum Sheet Forming: Transferability of Strip Drawing Tests to Forming Trials

et al. 2023

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For conventional sheet metal forming at room temperature, numerous tribometers have been developed in the 20th century. At the present state of the art, there are some challenges for tribometry in warm and hot forming processes of high‐strength aluminum (e.g., EN AW‐7075). Especially for nonisothermal processes with heated sheets and cooled dies, the tribological design is a major challenge, which needs to be addressed by investigations with adapted tribometers. Herein, the transferability of friction and wear behavior of three different lubricants and temperatures is investigated. Therefore, tribometer test results are compared with real forming trials in combination with thermomechanical finite element simulations. Both the behavior of different lubricant types and the characteristics of tool lubrication in sheet metal forming are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tribology in Warm and Hot Aluminum Sheet Forming: Transferability of Strip Drawing Tests to Forming Trials

et al. 2023

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“…Furthermore, these tests require special dies and are therefore quite expensive. [1] On the other end of the spectrum, we have the general tribometers described in Figure 1 as category 6. Main advantages of general tribometers are their standardisation (DIN 51350, DIN 51834, ASTM D5707, ASTM D1894, ASTM G99) these standards assure, the repeatability of the tests.…”

Section: Tribological Tests In the Sheet Metal Forming Processmentioning

confidence: 99%

“…Disadvantage, with regard to sheet metal forming, are different contact conditions therefore low applicability to forming processes (relatively small contact area, lubricated condition, etc.). [1]. Category 4 are mainly used for study of tribological systems, particularly lubricants.…”

Section: Tribological Tests In the Sheet Metal Forming Processmentioning

confidence: 99%

“…Following the change in tribological properties, the parameters of the forming operation, in particular the forming force, also change. [1][2][3] This article focuses on the search for a tribometer for use in testing tribological properties at various temperatures. The data from this research would be used in numerical simulations to further increase the accuracy of the sheet metal forming simulations.…”

Section: Introductionmentioning

confidence: 99%

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Tribology in Sheet Metal Forming: A Modification of Tribometer for Strip Drawing Test

STEJSKAL,

TATÍČEK,

NOVÁK

et al. 2023

METAL Conference Proeedings

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In the pursuit to produce the best product at the lowest cost, much can be done to reduce the cost of production. One of these methods, which is nowadays inseparable from the development part of production, is numerical simulation. However, the real world cannot be accurately modelled. The use of simplified models for numerical simulation can lead to different results between reality and simulation. One of these models is a coefficient of friction used in sheet metal forming simulations. Nowadays modern simulation software used for simulating the sheet metal forming process uses simplified model of friction coefficient using variables including surface roughness, topography, lubrication, and others. One of the variables not included in these models is temperature. In deep drawing, temperatures of sheet metal can be over 120 °C. Temperature can greatly change tribological properties, thus changing the friction between the tool and the sheet metal. The aim of this paper is to review a method of measurement of tribological properties in sheet metal forming and to design a modified tribometer for strip drawing test, focusing on the effect of temperature on tribological properties, predominantly for materials used in the automotive industry.

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Failure analysis of AISI 430 stainless steel sheet under stretching and bending conditions

Luiz

Rodrigues

2022

Int J Adv Manuf Technol

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In Search of the Perfect Sheet Metal Forming Tribometer

Cited by 7 publications

References 35 publications

Tribology in Warm and Hot Aluminum Sheet Forming: Transferability of Strip Drawing Tests to Forming Trials

Tribology in Warm and Hot Aluminum Sheet Forming: Transferability of Strip Drawing Tests to Forming Trials

Tribology in Sheet Metal Forming: A Modification of Tribometer for Strip Drawing Test

Failure analysis of AISI 430 stainless steel sheet under stretching and bending conditions

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