Medium and small-diameter iron-plastic combined super wear-resisting and high-strength floating oil seal ring and manufacturing method thereof

Abstract

The invention provides a medium and small-diameter iron-plastic combined super wear-resisting and high-strength floating oil seal ring. The oil seal ring comprises a plastic ring body. An iron sheet ring is mounted on the plastic ring body. A wear-resisting material is sprayed to the surface of a first supporting part and the surface of a second supporting part of the iron sheet ring to form a first bright band ring surface and a second bright band ring surface. The first bright band ring surface and the second bright band ring surface of the iron sheet ring are ground and polished. A plasticring mold is manufactured according to the manufactured iron sheet ring, modified PPS plastic is poured into a plastic ring mold to conduct injection molding to form the plastic ring body, the contactsurfaces of the iron sheet ring and the plastic ring body are coated with a sealant, and a plug pin of the iron shell ring is inserted into a slot shown in Figure 6 of the plastic ring body, so thatthe iron sheet ring and the plastic ring body are tightly connected to complete manufacturing of the floating oil seal ring. The iron-plastic floating oil seal ring manufactured by applying the new spraying process and selecting the super wear-resisting material is high in quality, high in wear resistance and low in iron-plastic combination material cost and has huge market competitiveness.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a small and medium-diameter iron-plastic combined ultra-wear-resistant high-strength floating oil seal ring and a manufacturing method thereof. Background technique [0002] The core quality of the metal ring of the floating oil seal lies in the sealing performance of the bright band on the working surface, which is reflected in the length of the wear-resistant working life. According to the size of the iron ring, the width of the bright band on the working surface is 3-5mm, which is a limited point. If the bright band is too wide, the adhesive force of the bonding surface of the two rings will be too large, and the tightness will be too tight, and the lubricating oil will not seep in, which will easily cause the two iron rings to lock and cause the apron to slip and rotate. ; At the same time, after the wear amount of the bright belt on the working surface of an iron ring of the floati...

AI Technical Summary

Problems solved by technology

If the super wear-resistant material is used, it will take longer to wear 2mm, and the rubber ring will not be able to withstand the aging and stiffness caused by long-term work.

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