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2 Non-crystal business layer When the sudden
The sudden high temperature of FAG bearing’s grinding zone can warmth up the component inside of depth of ten to 100nm with all the larger temperature than the tempering problem. In the event the temperature doesn’t get to the level of Austenitizing temperature, the surficial part would [link widoczny dla zalogowanych] type the organization modifying of tempering or high-temperature tempering in gradual levels as per the heating temperature. Meanwhile, the hardness would deteriorate. The decrease of hardness could be a lot more significant with increased heating [link widoczny dla zalogowanych] temperature.
1 Surficial oxidant level
Under the operate of sudden higher temperature, FAG bearings would develop the super-thin iron oxidant level in the depth of 20 to 30nm through the chemical interaction amongst metal and oxygen inside the air. We should certainly notify the thickness of oxidant thickness should be in proportion towards the complete thickness of surficial grinding metamorphic layer. It illustrates the immediate link among the oxidant [link widoczny dla zalogowanych] thickness and grinding production crafts. It truly is the critical symbol for the top quality of FAG bearing’s grinding.FAG bearing including tapered [link widoczny dla zalogowanych] roller bearings and Cylindrical roller bearing.
high [link widoczny dla zalogowanych] temperature of FAG bearing’s grinding [link widoczny dla zalogowanych] heat place reaches the melting situation of operating surface, the [link widoczny dla zalogowanych] steel molecular flowing would evenly spread about the functioning surface area. It could be cooled down while in the extraordinarily quickly velocity [link widoczny dla zalogowanych] through [link widoczny dla zalogowanych] the foundation metal to kind an very thin non-crystal organization layer. It really is with high-quality hardness and overall flexibility. But, its thickness is just 10nm or so. It is pretty easy to take away the cover throughout the precision grinding process.
3 High-temperature tempering layer
During the manufacturing of FAG bearing’s grinding method, a great deal of warmth and grinding friction heat will be wasted within the grinding wheel and work-piece speak to area. That will result in sudden higher temperature for your grinding region. Depending on the linear dynamic heating transferring principle, the calculation or software of infrared method and also the thermocouple technique can test the sudden temperature below the experimental problem. The sudden temperature can attain 1000 t0 1500 [link widoczny dla zalogowanych] degrees Celsius in the grinding friction zone inside 0.one to 0.001ms. The sudden large temperature can sort high-temperature oxidation, amorphous [link widoczny dla zalogowanych] tissue, high-temperature tempering, secondary hardening or maybe burnt breakage around the operating surface area inside a certain depth.
The sudden substantial temperature of FAG bearing’s grinding area heats up the surficial devices for the stage above Austenitizing temperature, the related business would return to your hardened Martensite business within the later cooling process. For each of the work-pieces with secondary hardened burning, the tempering degree in exceptionally reduced temperature would be absolutely shaped underneath the secondary [link widoczny dla zalogowanych] hardened layer.
4 Two-floored hardened layer
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