Thermal treatment method of steel rail heel forging section
A heat treatment method and rail technology, applied in the field of rail production and processing, can solve the problems of low hardness, small quenching depth and poor wear resistance of the forging section at the heel end of the rail, achieve uniform hardness distribution, eliminate internal stress, and improve hardness. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] This embodiment provides a heat treatment method for the forged section of the heel end of the rail, comprising the following steps:
[0036] 1) Send the whole rail heel forging section made of U71Mn material (including rail head 4, rail waist and rail bottom) to the induction heating furnace, and the rail heel forging section rail head 4, rail waist and The rail bottom is heated by medium-frequency induction as a whole, so that the temperature of the rail head 4, the rail waist and the rail bottom reaches 850°C. During the heating process, it is necessary to ensure that all parts of the rail heel forging section are heated evenly. In the induction heating furnace The heating area covers the entire forging section of the rail heel;
[0037] 2) Move the forged section of the rail heel end heated in step 1) to the air blowing device (such as figure 1 As shown), use 0.1MPa wind pressure to cool the top surface and side of the rail head 4 with air spray, stop the air spray...
Embodiment 2
[0039] This embodiment provides a heat treatment method for the forged section of the heel end of the rail, comprising the following steps:
[0040] 1) Send the whole rail heel forging section made of U71Mn material (including rail head 4, rail waist and rail bottom) to the induction heating furnace, and the rail heel forging section rail head 4, rail waist and The rail bottom is heated by medium-frequency induction as a whole, so that the temperature of the rail head 4, the rail waist and the rail bottom reaches 950°C. During the heating process, it is necessary to ensure that all parts of the rail heel forging section are heated evenly. In the induction heating furnace The heating area covers the entire forging section of the rail heel;
[0041]2) Move the heated forging section of the rail heel in step 1) to the air blowing device, and use 0.2 MPa air pressure to cool the top and side surfaces of the rail head 4 by blowing air, and wait for the temperature of the rail head ...
Embodiment 3
[0043] This embodiment provides a heat treatment method for the forged section of the heel end of the rail, comprising the following steps:
[0044] 1) Send the whole rail heel forging section made of U75V material (including rail head 4, rail waist and rail bottom) to the induction heating furnace, and the rail heel forging section rail head 4, rail waist and The rail bottom is heated by medium-frequency induction as a whole, so that the temperature of the rail head 4, the rail waist and the rail bottom reaches 920°C. During the heating process, it is necessary to ensure that all parts of the forging section of the rail heel end are heated evenly. In the induction heating furnace The heating area covers the entire forging section of the rail heel;
[0045] 2) Move the heated forging section of the rail heel in step 1) to the air blowing device, and use 0.15 MPa air pressure to cool the top and side surfaces of the rail head 4 by blowing air, and wait for the temperature of th...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More