Piston Rod Coating Material Study of Reciprocating Sealing Experiment Based on Sterling Seal

Sterling seal is a commonly used reciprocating seal, in which the PTFE ring of the seal and the surface material of the piston rod play an important role in the reciprocating sealing process. In this paper, a reciprocating sealing test bench was built, four sets of carbon fiber PTFE sealing rings we...

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Bibliographic Details
Published in:Applied sciences 2021-02, Vol.11 (4), p.1370
Main Authors: Zhang, Miaotian, Li, Decai, Suo, Shuangfu, Shi, Jianwen
Format: Article
Language:English
Subjects:
Abrasive wear
Carbon fibers
coating material
Coatings
Elastohydrodynamic lubrication
Experiments
Field emission microscopy
Friction
friction and wear
Hydraulics
interface performance
Lubricating oils
Morphology
Optimization
Performance evaluation
Protective coatings
reciprocating seal
Rods
Rubber
Scanning electron microscopy
Sealing
Sensors
Stainless steel
sterling seal
Topography
Wear
White light
Working conditions
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Summary:Sterling seal is a commonly used reciprocating seal, in which the PTFE ring of the seal and the surface material of the piston rod play an important role in the reciprocating sealing process. In this paper, a reciprocating sealing test bench was built, four sets of carbon fiber PTFE sealing rings were used to perform reciprocating sealing bench experiments with Cr-coated piston rods and DLC-coated piston rods. After the experiment, the used four sets of seals were taken as experimental samples, and a new, unused carbon fiber PTFE seal was taken as a reference sample. The surface topography, surface wear, and wear surface elements of the test specimens were measured by three-dimensional white light interference surface topography instrument, field emission environment scanning electron microscope, and field emission scanning electron microscope. Through experimental determination, it is found that the coating material is detached to form abrasive grains, which causes the surface of the sealing ring to wear. This paper also proposes optimization suggestions for the processing method of the sealing ring and the selection of the material of the piston rod coating.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11041370