The manufacturer of high frequency induction heating equipment briefly describes the defects of high frequency heater in heat treatment of rail
- Time of issue:2021-09-02
- Views:
(Summary description)The rail is a very important basic part, and its heat treatment is usually carried out by a high frequency heater. In the process of heat treatment, due to the influence of various factors, the rail is easy to produce deformation, hardness and other defects. These defects can affect the service life of the rail, while heavier defects can lead to the rail being scrapped. Therefore, it is of great practical significance to understand the causes of defects and remedy measures. Analysis and countermeasures of common heat treatment defects of rail One, uneven hardness, partial grinding, causing the defect is low quenching temperature, hardening layer depth is not enough, reduce the amount of water spray. Therefore, conventional heat treatment parameters should be used to ensure the quality of rail. Second, the hardness is unqualified, large dispersion. 1, tempering temperature is not appropriate, temperature difference is too large. Therefore, reasonable tempering process parameters should be determined. 2, quenching cooling, rail surface rust and oil. In view of this, the rail surface should be cleaned in time and kept clean until quenching. 3. Deformation: Improper placement of track during heating or cooling. Therefore, the straight rail should be guaranteed to reduce artificial deformation Spray, oil cooling and warm water cooling are unevenly distributed on both sides. Therefore, the cooling method or air cooling should be improved.
The manufacturer of high frequency induction heating equipment briefly describes the defects of high frequency heater in heat treatment of rail
(Summary description)The rail is a very important basic part, and its heat treatment is usually carried out by a high frequency heater. In the process of heat treatment, due to the influence of various factors, the rail is easy to produce deformation, hardness and other defects. These defects can affect the service life of the rail, while heavier defects can lead to the rail being scrapped. Therefore, it is of great practical significance to understand the causes of defects and remedy measures. Analysis and countermeasures of common heat treatment defects of rail
One, uneven hardness, partial grinding, causing the defect is low quenching temperature, hardening layer depth is not enough, reduce the amount of water spray. Therefore, conventional heat treatment parameters should be used to ensure the quality of rail.
Second, the hardness is unqualified, large dispersion.
1, tempering temperature is not appropriate, temperature difference is too large. Therefore, reasonable tempering process parameters should be determined.
2, quenching cooling, rail surface rust and oil. In view of this, the rail surface should be cleaned in time and kept clean until quenching.
3. Deformation: Improper placement of track during heating or cooling. Therefore, the straight rail should be guaranteed to reduce artificial deformation
Spray, oil cooling and warm water cooling are unevenly distributed on both sides. Therefore, the cooling method or air cooling should be improved.
- Time of issue:2021-09-02
- Views:
The rail is a very important basic part, and its heat treatment is usually carried out by a high frequency heater. In the process of heat treatment, due to the influence of various factors, the rail is easy to produce deformation, hardness and other defects. These defects can affect the service life of the rail, while heavier defects can lead to the rail being scrapped. Therefore, it is of great practical significance to understand the causes of defects and remedy measures. Analysis and countermeasures of common heat treatment defects of rail
One, uneven hardness, partial grinding, causing the defect is low quenching temperature, hardening layer depth is not enough, reduce the amount of water spray. Therefore, conventional heat treatment parameters should be used to ensure the quality of rail.
Second, the hardness is unqualified, large dispersion.
1, tempering temperature is not appropriate, temperature difference is too large. Therefore, reasonable tempering process parameters should be determined.
2, quenching cooling, rail surface rust and oil. In view of this, the rail surface should be cleaned in time and kept clean until quenching.
3. Deformation: Improper placement of track during heating or cooling. Therefore, the straight rail should be guaranteed to reduce artificial deformation
Spray, oil cooling and warm water cooling are unevenly distributed on both sides. Therefore, the cooling method or air cooling should be improved.
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