Powder metallurgy brass bearing retainer and preparation process thereof

Abstract

The invention belongs to the technical field of bearing zero machining, and particularly relates to a powder metallurgy brass bearing retainer and a preparation process thereof. The powder metallurgy brass bearing retainer is prepared from the following raw materials: 70-73% of iron powder, 0.7-1.0% of carbon, 20-25% of copper powder, 2.5-3% of nickel powder and 0.6-0.8% of a lubricant. The powder metallurgy brass bearing retainer is made of iron, copper, nickel and carbon, due to the fact that the copper, the nickel and the carbon are added, the powder metallurgy brass bearing retainer has the characteristics of being compact in hole, high in oil content, large in bearing capacity, low in noise and the like, the machining efficiency of the brass bearing retainer can be effectively improved through the brand new machining technology, and meanwhile, a vibration grinding machine is adopted for grinding and deburring, on one hand, burrs on the surfaces of parts can be effectively removed, meanwhile, the internal stress of the parts can be eliminated in the vibration collision process, meanwhile, anti-rust oil is added in the vibration grinding process, the anti-rust technology for the parts is simplified, and follow-up packaging is facilitated.

Description

technical field [0001] The invention belongs to the technical field of bearing zero processing, and in particular relates to a powder metallurgy brass bearing retainer and a preparation process thereof. Background technique [0002] Bearing parts are generally made by forging or lathing, but because high-carbon chromium steel is used as the raw material, the material itself is dense, which leads to low oil content and poor wettability of surface lubricants during use, resulting in serious wear and tear. , Reduced iron powder is a kind of gray or black powder mainly containing elemental iron, also known as "double absorber". Mix other metal powders to make bearing parts by pressing and sintering forming process. [0003] For this reason, a powder metallurgy brass bearing retainer and its preparation process are designed to solve the above problems. Contents of the invention [0004] In order to solve the problems raised in the above-mentioned background technology. The i...

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Problems solved by technology

[0002] Bearing parts are generally made by forging or lathing, but because high-carbon chromium steel is used as the raw material, the material itself is dense, which leads to low oil content and poor wettability of surface lubricants during use, resulting in serious wear and tear. , Reduced iron powder is a kind of gray or black powder mainly containing elemental iron, also known as "double absorber". Mix other metal powders to make bearing parts by pressing and sintering forming process

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