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Bearing process method of commonly used between rust has the following kinds:
A sodium nitrite. Leaching solution with thick
Will products and cleaning immersed contain sodium nitrite 15% to 20% in a solution of sodium carbonate and 0.6%, then put it up. Using this method the antirust period is short, generally can only keep 7-14 days, and in the rainy season, because the weather is wet, can maintain 2-3 days must restart processing, need to spend artificially and money.
2. Dip in antirust slot
Will bearing trap dip in 5% sodium nitrite and 0.6% in aqueous solution of sodium carbonate, antirust effect is good, but to many antirust trough etc equipment, occupy a lot of space, management is not easy.
Three. Greased Tapered Roller Bearing Thrust Roller Bearing Slewing Bearing
As the rust-proof on besmear as finished product. This method must be executed before the next working procedure in cleaning, more troublesome.
New anti-rust process method is introduced:
After and relevant manufacturer research, years of common practice showed that between multiple for process improvement, rust by spraying type antirust effect is good. The initial roller antirust for trial, will every day with bulk and finished product aqueous sodium nitrite rinse again, after 3 months snap results have not found corrosion, now on the bearing trap semi-finished products adopts spraying type antirust, the effect is also so. Spraying type antirust technology is more simple, its method is as follows:
A. Technological process
Every morning the use sodium nitrite, aqueous solution flush from a pool of water pump suction by rubber pipe out leads to shower, like spraying so flush bearing rings. Rinse water HuiShuiGou flow back to pool, and by HuiShuiGou ends in upper pool, with fine barbed wire and gauze with textile ash filter do a thing into sink grime. Middle library should deliver clean.
Pool of every 2 days test solution, according to the test results for supplement, in the pool of according to different change term solution in September, 4 - once every two weeks, thoroughly on October - swap on March, monthly change again.
2. The acquisition and construction equipment
According to how many, to establish a semi-finished products stored, middle library with cement middle ground, can be set a footpath, about 1.5 m, used to prevailing bearing rings car. At the end of the passage put a deposit sodium nitrite, solution formula solution pool 5% to 10% sodium nitrite plus 0.6% on the ground, and sodium, and then will do HuiShuiGou stacked in the hi-tech lined floor, each pile bearing rings with 0.6 m between the hallway. Can speak middle library for 64m2 or so, its design solution for sodium nitrite 1m3 pool.
conclusion
Spraying type antirust, management is more convenient and save labor, the past in 2 middle library personal antirust also cannot complete with a person still can now holds concurrently do other work, judging from the rust is also a significant effect. Worked in March 2003 7002136 and 3620 roller to more than 4,000 grain, using spraying type antirust, nearly for more than a year, still keep very light without rust. In addition to the chemicals consumption also have great save, past a month of roller workshop to consume more than 4000 kilograms sodium nitrite, and now only 200 kilogram, save nearly half.
Spraying type antirust method through relevant manufacturer in recent years, the use of test and proof of medium and large, batch much, cycle long bearing semi-finished products very well suited.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7010ADT NSK | 50 | 80 | 16 |
| 7910CDT NSK | 50 | 72 | 12 |