%0 Journal Article %1 Fricker.2021 %A Fricker, Philipp %A Baumann, Matthias %A Bauer, Frank %D 2021 %J Wear %K Welleneinlauf dichtungstechnik f_bauer from:philippfricker m_baumann myown p_fricker peer-review %R 10.1016/j.wear.2021.203897 %T How different lubricants affect the wear of steel counterfaces in radial lip sealing systems %U https://doi.org/10.1016/j.wear.2021.203897 %V 203897 %X Modern lubricants, such as polyglycols and esters, can cause problems when sealed with radial lip seals. Alongside chemical incompatibility with the elastomer, increased wear can impair the function of the sealing system and ultimately lead to leakage. Wear of the counterface is characterized by a characteristic abrasion that has the shape of a tangential circumferential groove. This wear is referred to as ``wear track''. Current research in the field of sealing technology shows that the wear of radial lip seals strongly depends on the wetting properties of the respective friction partners in addition to hydrodynamic influences. The wear sensitivity of the counterface is determined by the surface hardness (e.g. Vickers hardness HV) and the grain size of the microstructure (DIN EN ISO 643). The tendency to wear can thus ultimately be specified as the product of the lubrication condition and wear sensitivity. In this paper, the wear of different radial lip sealing systems is compared with hydrodynamic and wetting characteristics measured on the basis of the resulting wear track. For this purpose, wear investigations were carried out on five steel materials in combination with radial lip seals made of FKM and nine chemically different lubricants (two mineral oils, three polyglycols, two poly-a-olefins, one esters and one silicone oil). In addition, the relevant parameters (surface tension, dynamic viscosity, density, hardness) of the involved friction partners were determined as a function of temperature. Increased wear was observed especially in tests with polyglycol- and ester-based lubricants. In combination with the investigated steel materials, these lubricants show adhesion work that is less than or equal to the cohesive work in the lubricants themselves. This leads to incomplete wetting thus to a lubrication condition in the sealing gap which promotes abrasive wear and can have a negative influence on service life.

@article{Fricker.2021, abstract = {Modern lubricants, such as polyglycols and esters, can cause problems when sealed with radial lip seals. Alongside chemical incompatibility with the elastomer, increased wear can impair the function of the sealing system and ultimately lead to leakage. Wear of the counterface is characterized by a characteristic abrasion that has the shape of a tangential circumferential groove. This wear is referred to as ``wear track''. Current research in the field of sealing technology shows that the wear of radial lip seals strongly depends on the wetting properties of the respective friction partners in addition to hydrodynamic influences. The wear sensitivity of the counterface is determined by the surface hardness (e.g. Vickers hardness HV) and the grain size of the microstructure (DIN EN ISO 643). The tendency to wear can thus ultimately be specified as the product of the lubrication condition and wear sensitivity. In this paper, the wear of different radial lip sealing systems is compared with hydrodynamic and wetting characteristics measured on the basis of the resulting wear track. For this purpose, wear investigations were carried out on five steel materials in combination with radial lip seals made of FKM and nine chemically different lubricants (two mineral oils, three polyglycols, two poly-\textgreek{a}-olefins, one esters and one silicone oil). In addition, the relevant parameters (surface tension, dynamic viscosity, density, hardness) of the involved friction partners were determined as a function of temperature. Increased wear was observed especially in tests with polyglycol- and ester-based lubricants. In combination with the investigated steel materials, these lubricants show adhesion work that is less than or equal to the cohesive work in the lubricants themselves. This leads to incomplete wetting thus to a lubrication condition in the sealing gap which promotes abrasive wear and can have a negative influence on service life.}, added-at = {2021-06-14T11:38:53.000+0200}, author = {Fricker, Philipp and Baumann, Matthias and Bauer, Frank}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2f2d9f9f22a46db28967d722580aa1a98/ima-publ}, doi = {10.1016/j.wear.2021.203897}, file = {Fricker, Bauer et al. 2021 - How different Lubricants affect wear of steel counterfaces:Q\:\\Bereichsdaten\\DT\\Veröffentlichungen - IMA\\Veröffentlichungen DT - Citavi 6\\Veröffentlichungen DT\\Citavi Attachments\\Fricker, Bauer et al. 2021 - How different Lubricants affect wear of steel counterfaces.pdf:pdf}, interhash = {cbc384b4bb304ccfa71ba0ef9355e03e}, intrahash = {f2d9f9f22a46db28967d722580aa1a98}, issn = {00431648}, journal = {Wear}, keywords = {Welleneinlauf dichtungstechnik f_bauer from:philippfricker m_baumann myown p_fricker peer-review}, note = {676 (peer-review)}, timestamp = {2021-09-28T13:39:09.000+0200}, title = {How different lubricants affect the wear of steel counterfaces in radial lip sealing systems}, url = {https://doi.org/10.1016/j.wear.2021.203897}, volume = 203897, year = 2021 }