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Rolling method of channel rail

A technology of grooved steel rail and rolling process, which is applied in the direction of metal rolling, etc., can solve the problem that the grooved steel rail cannot be guaranteed to form a stable claw, so as to improve stability, high-efficiency production, and improve product qualification rate and yield Effect

Inactive Publication Date: 2017-05-17
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, 14 passes are used for rolling channel rails, and 14 pass types are used in the process of pressing, but the commonly used pass shapes cannot ensure that the channel rails form stable claws during rolling

Method used

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  • Rolling method of channel rail
  • Rolling method of channel rail
  • Rolling method of channel rail

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] Such as Figure 2-0 Shown is a schematic diagram of the shape of the steel billet used for rolling the grooved steel rail in the present invention. Such as Figure 2-2~2-1 Shown in 6 is a schematic diagram of the shape of the pass used for rolling the grooved rail in the present invention.

[0057] Such as Figure 2-1 to Figure 2-15 As shown, the rolling method of the grooved steel rail can efficiently and stably produce various grooved steel rails. In the rough rolling pass, the rectangular steel billet is rolled into a hat-shaped rolling piece, and the head of the rolled piece is pre-g...

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PUM

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Abstract

The invention discloses a rolling method for a trough type steel rail. The rolling method comprises the steps that a rectangular billet is rolled into a cap-shaped rolled part in a rough rolling pass, a groove is cut in the head portion of the rolled part in advance, the head portion and the lip portion are separated in advanced, and the stability of the rolling process in followed pass is guaranteed; metal distribution of the head portion and the lip portion is fully finished in a finishing pass; and the size and the shape of the head portion and the size and the shape of the lip portion are stabilized in a finished product final rolling pass to finish the hot deformation process. According to the rolling method, the stability of the product sizes is improved, the shapes are guaranteed, and the product percent of pass and the yield are effectively improved.

Description

technical field [0001] The invention relates to a production method of a grooved steel rail, in particular to a rolling method of a grooved steel rail. Background technique [0002] Such as Figure 1-0 Shown is a schematic diagram of the shape of a steel billet used in rolling channel rails in the prior art. Such as Figure 1-1 to 1-14 Shown is a schematic view of the pass shape used in the rolling grooved rail in the prior art. [0003] In the prior art, 14 passes are used for rolling the grooved rail, and 14 pass types are used in the pressing process, but the commonly used pass shapes cannot ensure that the grooved rail forms a stable claw during rolling. Contents of the invention [0004] The technical problem solved by the present invention is to provide a rolling method for grooved steel rails, which improves the stability of the product size, ensures the shape, and can effectively improve the qualified rate and yield of the product. [0005] The technical solutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/085
Inventor 王永明李勤
Owner INNER MONGOLIA BAOTOU STEEL UNION