Better Surface, Better Sealing  

Oleh:

Johnson, Joel

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 10 (Jun. 2011), page 44-46.
Topik: Sealing compounds; Surface roughness; Performance standards; Testing; Hydraulic equipment

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Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Rod seals on hydraulic cylinders may have the toughest job in fluid power. They have to contain fluid -- often pressurized to several thousand psi -- while letting the rod effortlessly move in and out. Surface quality, therefore, plays a major role in proper sealing and dramatically affects seal life and performance. Engineers at Simrit, Elgin, IL, have identified inspection parameters that accurately evaluate rod-surface finish in hydraulic applications and developed guidelines for manufacturers and users. These factors could lead to modernized standards for counter-surface preparation that extend the life of seals and cylinders. Simrit engineers set out to further define surface roughness using the Abbott-Firestone curve because it provides detailed information about a surface over a defined length, along with a complete profile depth. Engineers can consider all the the ultimate goal of developing these new testing parameters is to help engineers better understand -- and anticipate -- how seals will behave in a given application.

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