Sheet Metal Forming Lubricants

Losch, Achim

doi:10.1007/978-3-642-22647-2_230

Cited by 4 publications

(4 citation statements)

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“…The friction coefficient on the drawing edge varied from 0.097 to 0.067, but dependence on blank holding force was not confirmed. It might be due to different specific pressure, which is higher on the drawing edge, as stated in [24], [27]. As reported in [28], the size of the contact area has a significant influence on the value of the friction coefficient, whereas the rigidity of the test stand is responsible for the qualitative course of the friction curve.…”

Section: Resultsmentioning

confidence: 80%

Evaluation of selected properties of coatings in respect of risk elimination of surface damage of stamped parts

Tkáčová

Zdravecká

Evin

et al. 2019

Koroze a Ochrana Materialu

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For achieving a long service life of stamping dies for new types of steel sheets intended for the automotive industry, the tribosystem must be optimally designed. One of the possible solutions is its optimization by coatings. More modern coating technologies for stamping dies include PVD (physical vapor deposition) and CVD (chemical vapor deposition) methods. The properties of PVD TiCN and DLC (diamond-like carbon) coatings deposited on ledeburitic high-alloy Cr–Mo–V steel were analyzed by standard tests (coating adhesion by both the scratch and Rockwell C tests, microhardness by Vickers method and coating thickness by Calotest) and developed tribo-meter of the “friction jaw-roller” type at drawing double-sided hot-dip galvanized steel sheet. The obtained results showed better tribological behavior of the DLC coating.

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Section: Resultsmentioning

confidence: 80%

Evaluation of selected properties of coatings in respect of risk elimination of surface damage of stamped parts

Tkáčová

Zdravecká

Evin

et al. 2019

Koroze a Ochrana Materialu

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“…Setelah proses pembentukan pipa sesuai ukuran yang telah ditentukan, dilakukan proses pencelupan pipa ke dalam oli anticorit terlebih dahulu sebelum dilakukan penyimpanan atau pengiriman. Penggunaan oli anticorit dinilai efektif dalam mencegah laju korosi khususnya dalam industri baja untuk proses pembentukan material logam dan biasa digunakan sebagai pelumas [3].…”

Section: Pendahuluanunclassified

Perancangan Mesin Pembersih Pipa dari Oli Anticorit di PT. SPINDO Unit 6

Fitkirana,

Arizal

2023

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PT. Steel Pipe Industry of Indonesia, Tbk. (SPINDO) is one of the industries engaged in the manufacture of steel pipes for various needs, ranging from furniture, construction, automotive, etc. In the process of making steel pipes, there is a special treatment to slow down the corrosion rate, one of which is by dipping the pipe into anticorit oil. Some of the customers asked for special treatment on the galvanized iron square pipe to be cleaned of anticoritic oil. The problems that occur in PT. SPINDO unit 6, namely the process of cleaning pipes from anti-rust oil is still carried out by wiping the pipe surface so it takes a long time, which is 30 seconds/pipe. The purpose of this design is to determine the components, engine working mechanisms, and designs used in pipe cleaning machines from anticorit oil. With this design, it is hoped that it can become an illustration in the manufacture of anticorit oil pipes for cleaning machines for the speed up process.

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“…Thus, lubricants are necessary for reducing direct contact between the asperities of the sheet and of the tool, which enables controlling the friction and decreasing the wear. In forming of aluminum alloy sheets, water-free dry-film lubricants (so-called hotmelts) are typically used in small amounts of about 0.5-1.5 g/m 2 [9][10][11]. Compared to conventional water-or oil-based liquid lubricants, dry-film lubricants (DFL) possess superior characteristics in terms of environmental compatibility, cleanliness, corrosion protection, processability and lubricity.…”

Section: Introductionmentioning

confidence: 99%

Influence of elevated surface temperature on the formability in cold forming of aluminum alloy sheets

Hodžić

Sabet

Silvayeh

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In recent decades, deep drawing has been widely used in the automotive industry for producing lightweight car body components of 5xxx and 6xxx aluminum alloys. Although sheets of these alloys are usually deep-drawn at room temperature, heat generated by friction and plastic deformation may locally increase the surface temperature of the drawing tools during the serial production of components. Therefore, this work investigates the influence of elevated surface temperatures of the tool on the formability of commercial hotmelt-lubricated 1.5 mm-thick EN AW-5182 and EN AW-6016-T4 sheets. Deep drawing experiments were performed at different constant surface temperatures between room temperature (RT) and 80 °C using a cross-shaped tool with open die. With increasing surface temperature, the maximum drawing depth – that was considered as indicator for the formability – decreased by about 21 % and 28 % for EN AW-6016-T4 and EN AW-5182, respectively. Tribological experiments performed using a pin-on-plate tribometer confirmed this trend. The results clearly showed that the coefficient of friction (COF) between the sheet and the tool significantly increase at elevated surface temperature; the most notable increase of the COF occurred between 40 °C and 60 °C.

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Sheet Metal Forming Lubricants

Cited by 4 publications

References 0 publications

Evaluation of selected properties of coatings in respect of risk elimination of surface damage of stamped parts

Evaluation of selected properties of coatings in respect of risk elimination of surface damage of stamped parts

Perancangan Mesin Pembersih Pipa dari Oli Anticorit di PT. SPINDO Unit 6

Influence of elevated surface temperature on the formability in cold forming of aluminum alloy sheets

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