Lead alloy of Babbit B16.
To those who
Directly related to engineering,
Namely with the production of wagons and
Engines of trains, as well as spare parts
To them, of course, this word is familiar -
Babbitt. What does it mean and what is it
At the very
In fact, everything is simple. Babbitt is
Which includes tin
Or lead. It is used
In the form of a layer that is poured or
Sprayed on the bearing shell.
The inventor of this bearing
Alloy is an American by Isaac Babbitt,
In honor of which the alloy received its
name. The year of invention is
Different types of tin and lead alloy.
There are 3 main types with the following
Proportion: 1) 90% tin and 10% copper;
2) 89% tin, 7% antimony, 4% copper; 3)
80% lead, 15% antimony, 5% tin.
Has a very high plasticity. Him
Can easily be rolled into the finest
Sheets, or lead foil, it is stable
To corrosion. Therefore, it is widely used
As the main component in babbits
(The most common brand is babbit
Solders, alloys, which are used
For injection molding. In addition, he
It is used as an alloying component
In copper and copper-nickel alloys.
Lead is widely used in production
Batteries, cable sheaths, rack
Against corrosion of equipment.
Based on lead, brands such as babbit
B16, BN, BSB, BKA, BK2, BK2SH, SAE13, SAE14, ASTM7,
SAE15, ASTM15 is characterized by a higher operating
Temperature than babbitts made
On the basis of tin. They are used in
Bearings of diesel engines and
The most common babbits,
Lead-calcium calcite Babbit B-16,
Used in production
Motor-axial bearings of electric locomotives,
Track machines, as well as details of locomotives
And other heavy equipment
There are some drawbacks
B-16. It is characterized by
Low fatigue resistance, easier
Speaking, quickly wears out and, therefore,
Bearing life is reduced,
Leading to a deterioration in their performance.
All this must be taken into account when choosing the one
Or other brand, as lead Babbit
Not always suitable, and there is a big risk
, That you will have to replace very soon
Worn bearing or other part.
Today, in heavy engineering
Real alternative to the Babbit alloy
No, since its cost price is much
Less other alloys, therefore, its
Yearly production will only be