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Brake beam preparation method

A technology for braking beams and induction heating equipment, which is applied to manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as inability to meet index requirements, decline in mechanical properties of braking beams, and decline in the qualified rate of braking beam dimensions, and achieve guaranteed Dimensional qualification rate, reduction of cooling rate, effect of guaranteeing impact performance

Active Publication Date: 2017-09-15
CRRC QIQIHAR ROLLING CO LTD
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AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for preparing a brake beam to solve the problem that the air cooling and tempering process in the prior art leads to a decrease in the dimensional pass rate of the brake beam; The mechanical performance of the brake beam is severely reduced, and the technical problem that cannot meet the index requirements

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Embodiment Construction

[0032] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and the present invention is not limited to the following specific embodiments.

[0033] figure 1 It is the brake beam preparation flowchart of an embodiment of the brake beam preparation method of the present invention, such as figure 1 Shown, the preparation method of brake beam of the present invention can comprise:

[0034] S1, making and forming the brake beam steel;

[0035] S2, heating the brake beam steel to a first preset temperature and keeping it at the first preset temperature for a first preset time, wherein the first preset temperature is less than or equal to the phase transition temperature of the brake beam steel material;

[0036] S3, further heating the brake beam steel to a second preset ...

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Abstract

The invention provides a brake beam preparation method. The brake beam preparation method comprises the following steps that (S1) brake beam profile steel is manufactured and formed; (S2) the brake beam profile steel is heated to a first preset temperature, first preset time is maintained at the first preset temperature, and the first preset temperature is lower than or equal to the phase transition temperature of a brake beam profile steel material; (S3) the brake beam profile steel is further heated to a second preset temperature, second preset time is maintained at the second preset temperature, the second preset temperature is lower than or equal to the widmanstatten structure occurrence temperature of the brake beam profile steel material; (S4) the brake beam profile steel forms a brake beam by forging process; and (S5) the brake beam is placed in a cooler bin to be cooled to the temperature of 280-320 DEG C at a speed less than or equal to 0.25 DEG C / s and then is moved out, and the brake beam is cooled to a normal temperature at a room temperature. According to the brake beam preparation method, the manufactured brake beam meets the performance index requirements of the brake beam, and dimensional qualification of the brake beam is guaranteed. The brake beam preparation method further provides the cooler bin used for cooling the brake beam.

Description

technical field [0001] The invention relates to the manufacturing technology of railway vehicles, in particular to a method for preparing a brake beam. Background technique [0002] The brake beam is one of the key components of the basic braking system of the railway vehicle, and its good performance is a necessary condition to ensure the braking stability of the vehicle. The strength of the brake beam is an important index to ensure the stable application of the braking force, and its toughness and plasticity are the key performances to ensure that the brake beam does not occur brittle transient fracture. [0003] In the summary of existing technologies, the production process of the brake beam adopts Q460E-shaped steel, which is rolled into special-shaped steel, and then heated, cut, stretched, shaped and tempered in a gas-fired heating furnace to ensure that its performance indicators meet the requirements. Among them, the heat treatment process adopts forging waste hea...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D6/00C21D1/42
CPCC21D1/42C21D6/00C21D9/00Y02P10/25
Inventor 秦晓锋王皓肖利民王安李辉田长亮蔡建伟
Owner CRRC QIQIHAR ROLLING CO LTD
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