Process for manufacturing alloy steel for rail frog

Abstract

The invention discloses a process for manufacturing alloy steel for a rail frog. The process comprises the following steps of: smelting, pouring, forging, and performing heat treatment. The rail frog manufactured by the alloy steel which is manufactured by the manufacturing process has properties such as tensile strength, low-temperature impact properties and the like which are much higher than those of high manganese steel, the service life of the rail frog can be greatly prolonged, and the rail frog is not required to be frequently replaced, so that the operating cost of a rail can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of railway tracks, in particular to a manufacturing process of alloy steel for track frogs. Background technique [0002] The frog of the railway turnout is composed of the frog core rail, the left wing rail and the right wing rail on both sides of the frog core rail, etc. There is a large gap between the frog core rail and the two wing rails, so that the frog core rail tip and the frog core rail A harmful space is formed at the closest part of the working sides of the two wing rails. When the train passes, it will inevitably cause shock and vibration, and the frogs are easy to be damaged. Damage to the frogs will affect the safety of the train. The hardness of the high manganese steel is low at the initial stage, and the wear is fast. In the later stage, due to the continuous rolling of the train, the hardness of the top surface of the frog will continue to increase, and then the frog will peel off blocks, ...

AI Technical Summary

Problems solved by technology

[0002] The frog of the railway turnout is composed of the frog core rail, the left wing rail and the right wing rail on both sides of the frog core rail, etc. There is a large gap between the frog core rail and the two wing rails, so that the frog core rail tip and the frog core rail A harmful space is formed at the closest part of the working sides of the two wing rails. When the train passes, it will inevitably cause shock and vibration, and the frogs are easy to be damaged. Damage to the frogs will affect the safety of the train. As a result, high manganese steel has low hardness in the early stage and wears out quickly. In the later stage, due to the continuous rolling of the train, the hardness of the top surface of the frog will continue to increase, and then the frog will peel off blocks, which will further accelerate Damage to frogs; damaged frogs will endanger the running safety of trains and must be replaced in time; frogs made of high manganese steel not only have a low service life, but also need to be replaced frequently, which greatly increases the cost of track operation