Welding of an element of a track unit and a rail section without adding any material

A component and track section technology, which is applied in the field of welding between track unit components and rail profile steel without any added materials, can solve the problems of increasing the cost of the connection process and decreasing the hardness of the track

Inactive Publication Date: 2007-03-21
福斯洛科吉弗公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In particular, the use of such an intermediate part increases the cost of carrying out the joining process due to the specific nature of the material forming the insert and the need to provide both weld seams
Also, a decrease in rail hardness can be observed in the heat-affected zone produced by the welding energy

Method used

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  • Welding of an element of a track unit and a rail section without adding any material
  • Welding of an element of a track unit and a rail section without adding any material
  • Welding of an element of a track unit and a rail section without adding any material

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Embodiment Construction

[0038] Figure 1 shows a crossing frog that allows two sections of intersecting track to cross. Therefore, the four ends of the cross frog 12 are connected to four running lines 14 .

[0039] Each line section 14 is connected to the frog by a metal-free weld 16 .

[0040] As known per se, the frog 12 is made of high-alloy steel, in particular steel with a content of at least 5% by weight of at least one alloying element.

[0041] The steel is in particular an alloyed steel containing 12-14% by weight of manganese, and the frogs are formed by moulding. This bell steel is a well known steel called HADFIELD.

[0042] The hardness of this steel is 170-230HB.

[0043] In accordance with the present invention, the track sections 14 are made of medium alloy low carbon steel with a carbon content of less than 0.55 wt. Metallized welds. The carbon content of the medium alloy low carbon steel is preferably less than 0.5% by weight.

[0044] The medium alloy low carbon steel is pref...

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Abstract

The stretch of rail comprises a railway switch element (12) made from high-alloy steel, in which at least one alloy element has a content equal to at least 5% by weight, and a length of rail (14) made from steel, connected to one another by a weld without deposition of metal. The length of rail (14) is formed from a medium-alloy low-carbon steel of which the carbon content is less than 0.55% by weight.

Description

technical field [0001] The invention relates to a section of track comprising railway switch elements made of high-alloy steel, wherein the content of at least one alloying element in said high-alloy steel is at least equal to 5 weight%. Background technique [0002] In particular the invention relates to the connection between a turnout, such as a crossing frog, and a length of rail, such as running line rail made of carbon steel. [0003] It is known that when carbon steel components are welded together with high alloy steel components, the fusion produced during this operation can form an alloy at the interface of the two components with a different chemical composition than the respective base material. It is difficult to control the properties of the alloy formed when welding without deposited metal is performed, for example with flash welding. As a result, the welds obtained are usually of average quality, more like glued together. [0004] The carbon steel currentl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B7/12E01B11/50E01B1/00B23K11/04B23K101/26B23K103/04C22C38/00C22C38/02C22C38/04C22C38/22C22C38/38C22C38/60
CPCE01B7/12B23K11/04C22C38/02C22C38/60E01B11/50C22C38/22C22C38/38
Inventor S·博梅尔P·马格
Owner 福斯洛科吉弗公司
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