Fag Bearing
According to the conformation medium of the grinding skin on the face of the Fag Bearing, there are two main factors that have a great effect on the grinding skin, videlicet grinding heat and grinding force. Because of the limited knowledge of the author, now in the following passages it'll bandy why the Grubber bearing loses the effectiveness from the perspective of grinding force.
How does the grinding heat do? During the grinding process, because of the touch of grinding wheel and work- piece, the Grubber bearing brings about a great number of energy and grinding heat. Therefore the part of the grinding area suddenly produces the high temperature. The instant high temperature results in the oxidization of the working face and other changes similar as unformed composition, high tempering, secondary quenching, cracking, burn and so on. For the failure of the Grubber bearing, the face oxide subcaste, unformed towel subcaste and high- temper subcaste are the fairly main reasons.
The so- called face oxide subcaste is formed through the response between the sword face and oxygen in the air under the instant high temperature. The oxide subcaste is relatively thin. It's just about 20
30nm What people should pay attention to is that the consistence of the oxide subcaste has the corresponding relation with the total consistence of the face grinding skin. From this point, it can be concluded that the consistence of the oxide subcaste has a direct relationship with the grinding technology. At the same time, it's the important index for the quality of the grinding.
As for the unformed towel subcaste, it's formed when the working face achieves the melting state because of the instant high temperature. The melting essence molecular inflow is unevenly carpeted on the working face and meanwhile it's cooled down at a veritably fast speed by the base essence. The unformed towel subcaste is also relatively thin, but its hardness and durability are veritably high. Because it has only 10 nanometers, it's veritably easy to be removed during the perfection grinding process.
The third bone is the high- temper subcaste. In the grinding area the instant high temperature makes the temperature of the face advanced than the temperature for the work- piece's tempering. Before the temperature isn't achieved to the austenitizing temperature, the face of the Grubber bearing brings about the retempering step by step with the increase of the temperature. At the same time, the hardness is also reduced. The advanced the heating-up temperature is raised, the more serious the hardness is reduced.
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