Super wear-resistant floating oil seal ring and its production and processing method

Abstract

The invention provides a super wear-resisting floating oil seal ring and a producing and machining method thereof. According to the super wear-resisting floating oil seal ring, a first working surface of an oil seal ring body is provided with a first circle of metal wear-resisting layer, the lower portion of the first circle of metal wear-resisting layer is provided with a first slope, the included angle between the first slope and the first circle of working surface is a, a second circle of working surface is arranged under the first slope and provided with a second circle of metal wear-resisting layer, a second slope is formed under the second circle of metal wear-resisting layer, and the included angle between the second slope and the second circle of working surface is b. The friction contact surface of the floating oil sealing ring is machined into the two stepped metal wear-resisting layers, so that the service life of the floating oil seal ring is doubled. During producing and machining, the metal wear-resisting layers are machined through a quenching process or a flame spraying process so that the hardness of the wear-resisting layers can be effectively improved, and the service life of the floating oil seal ring is further prolonged.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a super wear-resistant floating oil seal ring and a production and processing method thereof. Background technique [0002] Floating seal is a kind of dynamic seal. It has good sealing effect in harsh working environments with a lot of coal powder, sediment, water vapor, etc. It is a compact mechanical seal and is generally used in the head of scraper conveyor ( Tail) sprocket assembly, loading mechanism of roadheader, left and right cutting drum and reducer of continuous coal mining machine, shield machine, crawler bulldozer, excavator, double wheel milling and other structures. The structure of the floating oil seal is generally composed of a pair of wear-resistant metal rings (floating seal rings) and a pair of rubber rings, which are assembled in a special sealing cavity (floating seal seat) for use. When the moving and static floating seal rings rotate relative to each ...

AI Technical Summary

Problems solved by technology

[0003] The existing floating seal type is sealed by the joint surfaces of two metal floating seal rings. The metal floating seal rings are not wear-resistant. After a long period of wear, the joint surfaces of the floating seal rings will cause uneven sealing work. Part of the gap will increase when the sealing surface is attached, and the oil sealing surface will be uneven. The lubricating oil will flow to the outside due to the pressure difference inside the box, resulting in leakage, oil leakage and other sealing failures. It is very difficult to replace and repair.

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