Hot extrusion forming method of stainless steel rail

A forming method and extrusion forming technology, applied in the direction of metal extrusion dies, etc., can solve the problems of scrapping rails in the heating process, and achieve the effects of not being restricted by blanks, increasing the economic benefits of the enterprise, and stabilizing the forming process

Pending Publication Date: 2021-01-12
HANDAN XINXING SPECIAL TUBING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many difficulties in this forming method: any problem in the mold design, heating process, lubrication effect, etc. will lead to the scrapping of the rail.

Method used

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  • Hot extrusion forming method of stainless steel rail
  • Hot extrusion forming method of stainless steel rail
  • Hot extrusion forming method of stainless steel rail

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. The protection scope of the present invention is not limited to the embodiments, and any changes made by those skilled in the art within the scope of the claims also belong to the protection scope of the present invention.

[0026] The hot extrusion molding of the stainless steel rail of the present invention utilizes a hot extrusion molding system to carry out extrusion molding, such as figure 1 As shown, the hot extrusion molding system includes machining equipment 14 , heating equipment 15 , lubricating equipment 16 , hot extrusion equipment 17 , cooling bed 18 , heat treatment equipment 19 and inspection equipment 20 . Processing equipment, induction heating equipment, lubrication equipment, hot extrusion equipment, cooling bed, heat treatment equipment and inspection equipment are set up in sequence. The machining equipment includes lathes, c...

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Abstract

The invention relates to a hot extrusion forming method of a stainless steel rail. A hot extrusion forming system comprises machining equipment, heating equipment, lubricating equipment, hot extrusionequipment, a cooling bed, heat treatment equipment and inspection equipment. The hot extrusion forming method comprises the following steps: (1) blank processing: sawing a forged polished blank roundsteel, lathing and polishing the outer surface; (2) induction heating: heating the blank by a multi-section heating and temperature equalizing method; (3) tool and mold preparation: adopting an extrusion mold with the same hole pattern as the steel rail; (4) lubricating: lubricating the outer surface of the blank and extrusion mold glass; (5) hot extrusion: performing hot extrusion on the blank to form the steel rail; (6) cooling: carrying out air cooling on the extruded steel rail; (7) heat treatment: performing heat treatment on the steel rail; and (8) inspection: inspecting the surface quality, size, mechanical property and physicochemical property of the steel rail. By reasonably integrating the production process, the production process is optimized, the produced stainless steel railmeets the quality requirement, the production cost is reduced, and the economic efficiency of enterprises is improved.

Description

technical field [0001] The invention belongs to the technical fields of hot extrusion forming technology and special-shaped material manufacturing, and relates to a hot extrusion forming method of stainless steel rails. Background technique [0002] Steel rails are the main components of railway tracks. Its function is to guide the wheels of the rolling stock to move forward, receive the huge pressure of the wheels, and transmit them to the sleepers. The rails must provide the wheels with a continuous, smooth and least drag rolling surface. In the electrified railway or automatic blocking section, the rail can also be used as a track circuit. The section shape of the rail adopts the I-shaped section with the best bending resistance, which consists of three parts: the rail head, the rail waist and the rail bottom. In order to make the rail better withstand forces from all sides and ensure the necessary strength conditions, the rail should have sufficient height, its head a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/21B21C23/32B21C25/02B23P15/00
CPCB21C23/21B21C23/32B21C25/02B23P15/00
Inventor 叶丙义高杰周洁刘富强张爱亮
Owner HANDAN XINXING SPECIAL TUBING CO LTD
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