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Manufacturing method of reinforced wing rail alloy steel frog

A production method and technology of alloy steel, which can be applied in the direction of track, switch, road, etc., and can solve the problems of different wear, impact, uneven frog top surface, etc.

Pending Publication Date: 2020-03-13
CHINA RAILWAY BAOJI BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the frogs have not reached their service life, they are removed from the track ahead of time, which affects the safety of train operation and increases the cost of railway operation
The wing rails of existing alloy steel combined frogs are ordinary on-line heat-treated steel rails, and the core rails are made of alloy steel materials. Two parts with different materials and different properties support the wheels in the frog core-wing rail transition area. In addition, the top surface of the frog is not smooth, The impact caused by factors such as different wheel wear is likely to cause damage to the two parts due to different impact and wear

Method used

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  • Manufacturing method of reinforced wing rail alloy steel frog
  • Manufacturing method of reinforced wing rail alloy steel frog
  • Manufacturing method of reinforced wing rail alloy steel frog

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: This strengthened wing-rail alloy steel composite frog is mainly composed of alloy steel core rail 4, fork heel rail 3 connected to the rear end of the core rail, and wing rails distributed on both sides of the core rail, through spacer iron 5 and high-strength bolts Connectors 6 are combined together, such as figure 1 shown.

[0019] The wing rail is a fully forged high manganese steel wing rail or a semi-forged high manganese steel wing rail. The semi-forged high manganese steel wing rail is composed of two sections, which are welded by a section of standard cross-section ordinary rail 1 and a section of forged high manganese steel rail 2. As a result, the ordinary rail 1 and a section of forged high manganese steel rail 2 are welded by flash welding, and there is only one weld 9. Ordinary rail 1 is made of the same rail material as section line, which can be used for seamless lines and is convenient for welding.

[0020] After the welded wing rail is ...

Embodiment 2

[0022] Embodiment 2: This strengthened wing-rail alloy steel composite frog is mainly composed of alloy steel core rail 4, fork heel rail 3 connected to the rear end of the core rail, and wing rails distributed on both sides of the core rail, through spacer iron 5 and high-strength bolts Connectors 6 are combined together, such as figure 1 , figure 2 shown.

[0023] The wing rail is a two-section welded structure, which is welded by a section of standard cross-section ordinary rail 1 and a section of alloy steel rail 2 , with only one weld 9 . Wing rail alloy steel rail 2 is made of the same alloy steel material as core rail 4 or an alloy steel material with similar properties; The two ends are processed into a standard rail section and connected with the standard rail.

[0024] After the welded wing rail is welded, it is processed according to the designed wing rail structure, and the working edge 7 and fillet 8 of the wing rail are obtained, which smoothly transition wit...

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Abstract

The invention relates to a manufacturing method of a reinforced wing rail alloy steel frog, and the method can solve the problems of quick vertical abrasion of a wing rail and chipping of a point railof a frog. The alloy steel frog comprises a point rail, a frog heel rail connected to the heel end of the point rail and wing rails distributed on the two sides of the point rail. The wing rails aremade of a forged high manganese steel material. Or the wing rails are composed of a section of common steel rail and a section of alloy steel rail, and the common steel rail and the alloy steel rail are welded together through flash welding. One end, connected to the line, of the wing rails is the common steel rail, and the other end of the wing rails is the high manganese steel rail. The method has the advantages that through wing rail strengthening and wheel rail relation optimization, the contact area of the top face of the wing rails and wheels is increased, the smoothness of the rail topface of a point-wing rail transition area is improved, the abrasion resistance of the wing rails is improved, the point rail is protected, and the effects of reducing wing rail abrasion, preventing the point rail from falling off and prolonging the service life of the frog are achieved.

Description

technical field [0001] The invention relates to a method for manufacturing frogs made of alloy steel frogs with strengthened wing rails, which can solve the problem of fast vertical wear of frog wing rails and falling blocks of core rails, and belongs to the field of frog manufacturing. Background technique [0002] The existing alloy steel composite frogs used in railway turnouts have the main defects of fast vertical wear of wing rails and loss of scales on small cross-sections of core rails. When the frogs have not reached their service life, they go down the track ahead of time, which affects the safety of train operation and increases the cost of railway operation. The wing rails of existing alloy steel combined frogs are ordinary on-line heat-treated steel rails, and the core rails are made of alloy steel materials. Two parts with different materials and different properties support the wheels in the frog core-wing rail transition area. In addition, the top surface of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00E01B7/12
CPCB23P15/00E01B7/12
Inventor 李文博费维周郑会锋张莉亓云飞赵双玖
Owner CHINA RAILWAY BAOJI BRIDGE GRP
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