Turnout sliding plate and manufacturing method

A technology of sliding bed and turnout, applied in the direction of track, road, coating, etc., can solve the problems of low wear resistance and impact resistance, poor corrosion resistance, etc., and achieve the effect of good friction performance

Inactive Publication Date: 2016-11-23
杜江 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing turnout sliding bed has technical problems such as poor corrosion resistance, low wear resistance and impact resistance, and needs to be lubricated with oil.

Method used

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  • Turnout sliding plate and manufacturing method

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Effect test

preparation example Construction

[0027] The preparation method of the turnout sliding bed mainly includes the following steps:

[0028] 1. Sand blasting to remove scale, rust and oil stains on the surface of the sliding bed;

[0029] 2. Preparation of cladding alloy powder materials;

[0030] 3. Cladding parameter input of sliding bed;

[0031] 4. Quality inspection and parameter adjustment of alloy powder surfacing cladding on slide bed;

[0032] 5. Plasma arc alloy powder surfacing cladding on sliding bed;

[0033] 6. Cladding quality inspection of turnout sliding bed;

[0034] 7. Plasma arc powder surfacing cladding parameters of turnout sliding bed:

[0035] Current = 160-300A;

[0036] Protective gas flow = 2 ~ 12L / min;

[0037] Powder feeding air flow = 0.5 ~ 2L / min;

[0038] One surfacing welding width = 3-24mm;

[0039] One-time surfacing thickness = 2-6mm;

[0040] One surfacing welding speed = 200-600mm / min.

Embodiment 1

[0043] Carry out pretreatment on the material of Q235 sliding bed, and remove the rust, oil and scale on the table by sandblasting. Prepare cladding alloy powder, the powder particle size is 150 mesh, the mass percentage of the cladding alloy powder is: C 0.25%, B 3.5%, Si 3%, Ni 2.0%, Cr 12.5%, rare earth ferrosilicon alloy 1.50%, the balance For Fe. Plasma arc powder surfacing welding machine is used to surfacing and cladding the sliding bed, welding current = 160A, powder feeding gas flow rate = 0.5L / min, shielding gas flow rate = 2L / min, a surfacing welding width = 3mm; a surfacing welding Thickness = 2mm; once surfacing welding speed = 600mm / min. The sliding bed and the deposited alloy are metallurgically bonded.

Embodiment 2

[0045] Carry out pretreatment on the material of Q275 sliding bed, and remove the rust, oil and scale on the table by sandblasting. Prepare cladding alloy powder, the powder particle size is 300 mesh, the mass percent of the cladding alloy powder is: C 0.20%, B 3.5%, Si 3%, Ni 2.8%, Cr 16.0%, rare earth ferrosilicon 1.50%, the balance For Fe. Plasma arc powder surfacing machine is used to surfacing and cladding the sliding bed, welding current = 180A, powder feeding gas flow rate = 0.8L / min, shielding gas flow rate = 4L / min, a surfacing welding width = 8mm; a surfacing welding Thickness = 3mm; one surfacing welding speed = 500mm / min. The sliding bed and the deposited alloy are metallurgically bonded.

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Abstract

The invention discloses a turnout sliding bed and a manufacturing method. The sliding bed includes: a layer of cladding alloy with a thickness ≥ 1.0 mm attached to the sliding bed and its surface, and the sliding bed is made of ordinary carbon steel or low Alloy steel material; the cladding alloy is a powder alloy material that adjusts the Cr / C ratio ≥ 50 on the basis of martensitic stainless steel, and adds B, Si, Ni elements and rare earth ferrosilicon alloy. The powder alloy material The mass percentage is: C 0.08-0.25%, B 3.5-4.0%, Si 3.0-3.5%, Ni 2.0-5.0%, Cr 16.0-20.0%, rare earth ferrosilicon alloy 1.50-3.5%, and the balance is Fe; the powder The particle size of the alloy material is 150-300 mesh; the cladding alloy on the table of the sliding bed is cladding by using a plasma arc powder surfacing machine with an argon plasma arc as a heat source.

Description

technical field [0001] The invention relates to the technical field of railway turnout manufacturing, in particular to a turnout sliding bed and a manufacturing method thereof. Background technique [0002] Sliding bed is an important part of switching point rail of railway switch. The requirements of the railway department are: the turnout sliding bed can work reliably and permanently under the working conditions of high speed, heavy load, severe wear and corrosion. However, the existing turnout sliding bed has technical problems such as poor corrosion resistance, low wear resistance and impact resistance, and needs to be lubricated with oil. [0003] Application number 200710158808.2 patent title is " a kind of nickel-based alloy powder for laser cladding conductive roller " Chinese patent literature discloses a kind of nickel-based alloy powder, this kind of nickel-based alloy powder is added Co, Nickel-based alloy powder for laser cladding with conductive properties of...

Claims

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Application Information

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IPC IPC(8): E01B7/02C22C38/54C23C24/10B22F1/00
Inventor 高玉芝将玉国马金忠郭洪德杜江
Owner 杜江
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