Principle of the freedom to choose rolling bearing steel

by **bkmjhfd** Wed Sep 17, 2014 8:39 pm

Design and manufacture of rolling bearings, according to the following general principles to select bearing materials.
A. According to the bearing working conditions to choose
1. Working temperature
Work, bearing using chromium bearing steel. Temperature below 15 ℃ 250 ℃ and above using chromium bearing steel, but with special heat treatment (200 ℃ or 300 ℃ holiday).Gas lubricated bearing what are defects
(2) the impact load size
Under impact load is strong, never say die, USES the most high quality chromium bearing steel, carburized steel structure, impact resistant tools or refined steel structure.
3 contact media.
Corrosive medium in the use of bearings must use good permeability - corrosion of steel or alloy steel.
2. According to the structure type selection
Bearing parts structure is complex, installed in bearing flange, and bear high impact load can be used for processing good quality cement steel stamping, needle roller bearing and 10 8 can be used in a low carbon steel (plastic good, deal with cold), agency or authority control, can be used in a joint bearing, has the high quality cold plastic deformation performance, and 9 cr18 GCr15 steel structure 9 cr8mo alloy cold extrusion molding.
3. According to the reliability requirements of bearing and the selection intensity
Bearing reliability and durability, to a certain extent, depends on the net steel and uniformity. For general use cases, the use of acidic or alkaline 3 furnace smelting bearing steel is simple. With the continuous improvement of smelting technology, provides the current vacuum smelting, smelting furnaces are new smelting bearing steel smelting method according to the bearing and also improved. Reliability and durability requirements, the use of special bearing, bearing shaft axle box of railway vehicles and aircraft engine bearings bearing navigation system, etc.
In addition, should also be considered in selecting varieties comprehensive processing performance, become the domestic supply path, etc.).