Floating oil seal machining process

Abstract

The invention discloses a floating oil seal machining process, which sequentially comprises the following steps of: performing rubber mold precoated sand modeling, casting, performing shot blasting, checking a blank, grinding, performing quenching heat treatment, performing oil abrasion, cleaning, injecting oil, mounting a rubber ring, checking, packaging, warehousing and the like, wherein molten iron comprises the following components in parts by weight: 18 to 26 parts of Cr, 2.5 to 5.7 parts of Mo, 3.76 to 3.78 parts of Ni, 1.25 to 3.29 parts of Cu, 1.55 to 3.92 parts of Mn, 2.87 to 4.15 parts of Si and 4.88 to 6.12 parts of C. During casting, mold is conveniently withdrawn, one-step casting molding is performed, the waste of the molten iron is reduced, the process of turning the machining allowance of the lathe can be avoided, mass production is convenient, and the cost is reduced; and moreover, the strength, hardness, wear resistance, fatigue strength, heat resistance and toughness of the floating seal ring are greatly improved. According to the finished floating oil seal, various detection indexes exceed over 5 to 10 percent of the standard in the industry, and the floating oil seal is worthy of popularization and application.

Description

technical field [0001] The invention relates to a production and processing technology of a floating oil seal. Background technique [0002] Floating oil seal is a special form of non-contact mechanical seal. It is a compact mechanical seal developed to adapt to harsh working environments. It has strong anti-pollution ability, wear resistance, impact resistance, and reliable operation. End face wear automatic compensation, simple structure and other advantages. At present, floating oil seals are widely used in construction machinery, coal mining machinery, construction machinery, petroleum machinery and aviation ships, among which the most common application is in construction machinery products, including various conveyors, sand processing equipment, coal mining equipment, concrete equipment And so on have applications. [0003] Traditional production and processing of floating oil seals mainly uses lost wax casting, which has high casting precision, but the process is cu...

AI Technical Summary

Problems solved by technology

At present, the floating oil seals on the market have poor wear resistance and heat resistance, the hardness is generally lower than HRC62-65, the sealing performance is not good, the service life is generally lower than 4500 hours, and it is easy to be damaged when used under high-intensity operating conditions.