CN112501965B - Method for controlling wavy abrasion of railway steel rail - Google Patents
Method for controlling wavy abrasion of railway steel rail Download PDFInfo
- Publication number
- CN112501965B CN112501965B CN202011234653.8A CN202011234653A CN112501965B CN 112501965 B CN112501965 B CN 112501965B CN 202011234653 A CN202011234653 A CN 202011234653A CN 112501965 B CN112501965 B CN 112501965B
- Authority
- CN
- China
- Prior art keywords
- steel rail
- wave
- abrasion
- wear
- strengthening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/18—Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B35/00—Applications of measuring apparatus or devices for track-building purposes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of rail transit, in particular to a method for controlling the wavy abrasion of a railway steel rail, which comprises the following steps: firstly, collecting line information of a railway steel rail wave-shaped abrasion section, carrying out steel rail wave-shaped abrasion tracking test, and acquiring steel rail wave-shaped abrasion data; matching and designing selective steel rail strengthening parameters at trough positions based on the steel rail wear rate and the wear characteristics of steel rail surface quenching strengthening treatment materials; thirdly, carrying out selective strengthening treatment on wave-shaped wear wave trough positions of the steel rail by a selective quenching strengthening technology on the surface of the steel rail according to strengthening parameters, and increasing the relative rate ratio of the wave crest wear of the wave-shaped wear steel rail to the wave trough wear; and fourthly, when the amplitude between wave crests and wave troughs of the wavy worn steel rail is reduced to a certain value, and the reinforcing material at the wave trough position is worn to disappear, and carrying out uniform area selection reinforcing treatment on the surface of the steel rail. The invention can better control the development of the wavy abrasion of the steel rail.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a method for controlling wavy abrasion of a railway steel rail.
Background
In the prior art, the wavy abrasion of the railway steel rail is mainly improved by grinding the top surface of the steel rail, the wavy abrasion of the steel rail can be improved only in a short time by grinding the steel rail, and the wavy abrasion of the steel rail can be developed again along with the extension of operation time; the steel rail is polished to eliminate the wave-shaped abrasion by cutting off the surface material of the steel rail, thereby reducing the service life of the steel rail and having high economic cost.
Disclosure of Invention
It is an object of the present invention to provide a method of controlling railway rail waviness wear which overcomes some or all of the disadvantages of the prior art.
The method for controlling the wavy abrasion of the railway steel rail comprises the following steps:
firstly, collecting line information of a railway steel rail wave-shaped abrasion section, carrying out steel rail wave-shaped abrasion tracking test, and acquiring steel rail wave-shaped abrasion data;
matching and designing selective steel rail strengthening parameters at trough positions based on the steel rail wear rate and the wear characteristics of steel rail surface quenching strengthening treatment materials;
thirdly, carrying out selective strengthening treatment on wave-shaped wear wave trough positions of the steel rail by a selective quenching strengthening technology on the surface of the steel rail according to strengthening parameters, and increasing the relative rate ratio of the wave crest wear of the wave-shaped wear steel rail to the wave trough wear;
and fourthly, when the amplitude between wave crests and wave troughs of the wavy worn steel rail is reduced to a certain value, and the reinforcing material at the wave trough position is worn to disappear, and carrying out uniform area selection reinforcing treatment on the surface of the steel rail.
Preferably, in the first step, the method for obtaining the rail wavy wear data by the rail wavy wear tracking test comprises the following steps:
1.1, measuring the profile of the steel rail periodically, and comparing the profile with the standard profile of the steel rail to obtain the abrasion of the steel rail;
1.2, measuring the steel rail profile once every 5 degrees by using a laser profile measuring instrument or a contact profile measuring instrument to obtain the steel rail abrasion loss;
and 1.3, obtaining the steel rail abrasion loss in the whole line interval range by utilizing a linear interpolation method.
Preferably, the enhancement parameters include enhancement spot size, depth and spacing.
Preferably, the design method of the enhancement parameters is as follows: recording the abrasion loss S of a certain point on the surface of the steel rail; the difference of the abrasion loss between the wave trough and the wave crest is delta S; the depth of the reinforced spot is h; the diameter of the reinforcing spot is D; the abrasion resistance of the material in the strengthening area is improved by m times; the depth h of the reinforcing spot satisfies the following formula:
wherein alpha is an adjustment coefficient and is related to the position of the strengthening area;
after obtaining the depth h of the reinforced spot, calculating the diameter of the reinforced spot according to the following formula:
D＝18h；
the reinforcement spot spacing l in each row is determined according to the following equation:
in the formula SminRepresenting the amount of wear at the peaks; beta is a tuning coefficient, and is related to the improvement amount of the abrasion resistance of the material in the strengthening area.
Preferably, the spacing between rows of reinforcing spots is taken to be 3 times the reinforcing spot diameter.
Preferably, in the fourth step, when the uniform strengthening treatment is carried out, the depth of the strengthened spots is 0.8 mm; the diameter is taken as 14.4 mm; the distance between the reinforced spots in each row is 15 mm; the row-to-row spacing was taken to be 40 mm.
According to the method, based on the abrasion rate of the steel rail and the abrasion characteristic of the quenching strengthening treatment material on the surface of the steel rail, the wave-shaped abrasion trough position of the steel rail is subjected to selective strengthening treatment, the abrasion relative rate ratio of the wave crest to the trough position of the wave-shaped abrasion steel rail is increased, the amplitude between the wave crest and the trough of the wave-shaped abrasion steel rail is reduced, and the development of the wave-shaped abrasion is controlled.
The invention does not change the strength of the steel rail, obviously improves the wear resistance of the wave-ground steel rail trough material, greatly prolongs the service life of the steel rail, and greatly reduces the cost compared with the steel rail grinding.
Drawings
FIG. 1 is a flow chart of a method for controlling wavy wear of a railway rail according to example 1;
fig. 2 is a schematic view of the steel rail section reinforcement in example 1.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a method for controlling wavy wear of a railway rail, which comprises the following steps:
firstly, collecting line information of a railway steel rail wavy abrasion section, wherein the line information comprises operation conditions and field data, and then carrying out steel rail wavy abrasion tracking test to obtain steel rail wavy abrasion data;
matching and designing selective steel rail strengthening parameters at trough positions based on the steel rail wear rate and the wear characteristics of steel rail surface quenching strengthening treatment materials;
thirdly, carrying out selective strengthening treatment on wave-shaped wear wave trough positions of the steel rail by a selective quenching strengthening technology on the surface of the steel rail according to strengthening parameters, and increasing the relative rate ratio of the wave crest wear of the wave-shaped wear steel rail to the wave trough wear;
and fourthly, when the amplitude between wave crests and wave troughs of the wavy worn steel rail is reduced to a certain value and the reinforcing material at the wave trough position is worn and disappears, uniformly selecting areas on the surface of the steel rail for reinforcing so as to improve the surface wear resistance of the steel rail.
In the first step, the method for tracking and testing the wavy abrasion of the steel rail to obtain the wavy abrasion data of the steel rail comprises the following steps:
1.1, measuring the profile of the steel rail periodically, and comparing the profile with the standard profile of the steel rail to obtain the abrasion of the steel rail;
1.2, measuring the steel rail profile once every 5 degrees by using a laser profile measuring instrument or a contact profile measuring instrument to obtain the steel rail abrasion loss;
and 1.3, obtaining the steel rail abrasion loss in the whole line interval by utilizing a linear interpolation method.
The enhancement parameters include enhancement spot size, depth and spacing.
The design method of the strengthening parameters comprises the following steps: recording the abrasion loss S of a certain point on the surface of the steel rail; the difference of the abrasion loss between the wave trough and the wave crest is delta S; the depth of the reinforced spot is h; the diameter of the reinforcing spot is D; the abrasion resistance of the material in the strengthening area is improved by m times; in order that the difference Δ S in the amount of wear between the peak and the trough is reduced to 0 when the reinforcing spot wear is almost exhausted, the reinforcing spot depth h satisfies the following formula:
wherein alpha is an adjustment coefficient and is related to the position of the strengthening area; when the strengthening area is positioned in the wave valley, the alpha is maximum, and can be selected from 8-10 according to the actual abrasion loss and the value of m; when the peak is between the wave crest and the wave trough, selecting between 5 and 8 according to the field strengthening effect;
the diameter of the enhanced spot is usually in a definite relation with the depth of the enhanced spot, and for laminar plasma enhancement, after the depth h of the enhanced spot is obtained, the diameter of the enhanced spot is calculated according to the following formula:
D＝18h；
the reinforcement spot spacing l in each row is determined according to the following equation:
in the formula SminRepresenting the amount of wear at the peaks; beta is a tuning coefficient, and is related to the improvement amount of the abrasion resistance of the material in the strengthening area. The wear resistance is improved effectively, and beta can be properly increased; the abrasion resistance is improved generally, beta can be properly smaller, and the minimum beta can not be less than 1.
The distance between the rows of the reinforcing spots is taken as 3 times of the diameter of the reinforcing spots. If the improvement in abrasion resistance is not desired, the spacing may be reduced appropriately, but should not cause overlapping and crossing of the reinforcing specks.
In the fourth step, when uniform strengthening treatment is carried out, the depth of the strengthening spot is 0.8 mm; the diameter is taken as 14.4 mm; the distance between the reinforced spots in each row is 15 mm; the row-to-row spacing was taken to be 40 mm.
In the embodiment, based on the abrasion rate of the steel rail and the abrasion characteristic of the steel rail surface quenching strengthening treatment material, the wave-shaped abrasion trough position of the steel rail is subjected to selective strengthening treatment, the abrasion relative rate ratio of the wave crest to the trough position of the wave-shaped abrasion steel rail is increased, the amplitude between the wave crest and the trough of the wave-shaped abrasion steel rail is reduced, and the development of the wave-shaped abrasion is controlled.
Claims (4)
1. A method for controlling the wavy abrasion of a railway steel rail is characterized by comprising the following steps: the method comprises the following steps:
firstly, collecting line information of a railway steel rail wave-shaped abrasion section, carrying out steel rail wave-shaped abrasion tracking test, and acquiring steel rail wave-shaped abrasion data;
matching and designing selective steel rail strengthening parameters at trough positions based on the steel rail wear rate and the wear characteristics of steel rail surface quenching strengthening treatment materials; the strengthening parameters comprise strengthening spot size, depth and spacing;
the design method of the strengthening parameters comprises the following steps: recording the abrasion loss S of a certain point on the surface of the steel rail; the difference of the abrasion loss between the wave trough and the wave crest is delta S; the depth of the reinforced spot is h; the diameter of the reinforcing spot is D; the abrasion resistance of the material in the strengthening area is improved by m times; the depth h of the reinforcing spot satisfies the following formula:
wherein alpha is an adjustment coefficient and is related to the position of the strengthening area;
after obtaining the depth h of the reinforced spot, calculating the diameter of the reinforced spot according to the following formula:
D＝18h；
the reinforcement spot spacing l in each row is determined according to the following equation:
in the formula SminRepresenting the amount of wear at the peaks; beta is a tuning coefficient, and is related to the improvement amount of the abrasion resistance of the material in the strengthening area.
Thirdly, carrying out selective strengthening treatment on wave-shaped wear wave trough positions of the steel rail by a selective quenching strengthening technology on the surface of the steel rail according to strengthening parameters, and increasing the relative rate ratio of the wave crest wear of the wave-shaped wear steel rail to the wave trough wear;
and fourthly, when the amplitude between wave crests and wave troughs of the wavy worn steel rail is reduced to a certain value, and the reinforcing material at the wave trough position is worn to disappear, and carrying out uniform area selection reinforcing treatment on the surface of the steel rail.
2. The method for controlling the wavy wear of the railway steel rail according to claim 1, wherein the method comprises the following steps: in the first step, the method for tracking and testing the wavy abrasion of the steel rail to obtain the wavy abrasion data of the steel rail comprises the following steps:
1.1, measuring the profile of the steel rail periodically, and comparing the profile with the standard profile of the steel rail to obtain the abrasion of the steel rail;
1.2, measuring the steel rail profile once every 5 degrees by using a laser profile measuring instrument or a contact profile measuring instrument to obtain the steel rail abrasion loss;
and 1.3, obtaining the steel rail abrasion loss in the whole line interval by utilizing a linear interpolation method.
3. The method for controlling the wavy wear of the railway steel rail according to claim 1, wherein the method comprises the following steps: the distance between the rows of the reinforcing spots is taken as 3 times of the diameter of the reinforcing spots.
4. The method for controlling the wavy wear of the railway steel rail according to claim 1, wherein the method comprises the following steps: in the fourth step, when uniform strengthening treatment is carried out, the depth of the strengthening spot is 0.8 mm; the diameter is taken as 14.4 mm; the distance between the reinforced spots in each row is 15 mm; the row-to-row spacing was taken to be 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234653.8A CN112501965B (en) | 2020-11-07 | 2020-11-07 | Method for controlling wavy abrasion of railway steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234653.8A CN112501965B (en) | 2020-11-07 | 2020-11-07 | Method for controlling wavy abrasion of railway steel rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112501965A CN112501965A (en) | 2021-03-16 |
| CN112501965B true CN112501965B (en) | 2021-11-26 |
Family
ID=74955427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011234653.8A Active CN112501965B (en) | 2020-11-07 | 2020-11-07 | Method for controlling wavy abrasion of railway steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112501965B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216618B (en) * | 2022-06-08 | 2023-03-10 | 西南交通大学 | Method and device for controlling abrasion of railway steel rail weld joint |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2927890C2 (en) * | 1979-07-11 | 1983-12-22 | Elektro-Thermit Gmbh, 4300 Essen | Rail for track-bound vehicles |
| JPH0890647A (en) * | 1994-09-27 | 1996-04-09 | Showa Aircraft Ind Co Ltd | Molding device of corrugation and honeycomb core made of fiber-reinforced plastic |
| CN2496915Y (en) * | 2001-03-22 | 2002-06-26 | 张准胜 | Railway steel rail of surface phase-transformation hardening by laser |
| CN102121064A (en) * | 2011-01-30 | 2011-07-13 | 武汉华工激光工程有限责任公司 | Off-line laser quenching process for surface strengthening treatment of steel rail |
| CN102121217B (en) * | 2011-01-30 | 2012-11-28 | 武汉武钢华工激光大型装备有限公司 | Online laser quenching process for strengthening steel rail surface |
| CN102953302B (en) * | 2011-08-18 | 2016-02-03 | 西南交通大学 | The combination laser intensifying method of ramp/bend rail-track switch, straight road rail-track switch |
| CN102864704B (en) * | 2012-10-26 | 2014-08-20 | 石家庄铁道大学 | Device and method for steel rail surface online measurement and laser selective repair |
| CN105200198A (en) * | 2014-06-05 | 2015-12-30 | 武汉团结点金激光制造技术有限公司 | Laser strengthening technology for surface of steel rail of railway |
| CN110846942A (en) * | 2019-10-24 | 2020-02-28 | 四川金虹等离子技术有限公司 | Railway steel rail treated by laminar plasma technology |
| CN110592367A (en) * | 2019-10-24 | 2019-12-20 | 四川金虹等离子技术有限公司 | Point-like treatment method for steel rail surface by laminar plasma technology |
| CN111291498A (en) * | 2020-02-28 | 2020-06-16 | 朔黄铁路发展有限责任公司 | Steel rail section abrasion prediction system, method, computer device and storage medium |
-
2020
- 2020-11-07 CN CN202011234653.8A patent/CN112501965B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112501965A (en) | 2021-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112501965B (en) | Method for controlling wavy abrasion of railway steel rail | |
| CN112749441B (en) | Control method for polygonal abrasion of wheels of rail transit vehicle | |
| Liu et al. | Analytical modeling of grinding process in rail profile correction considering grinding pattern | |
| CN102781614B (en) | A method of manufacturing a stainless steel product | |
| US9289910B2 (en) | Method of processing ridge of cutting edge and instrument with processed ridge of cutting edge | |
| CN203390382U (en) | Electrode dresser | |
| Kundrak et al. | Roughness of ground and hard-turned surfaces on the basis of 3D parameters | |
| KR0149521B1 (en) | Knife blades | |
| EP2905353B1 (en) | Shaped steel wire for undersea-cable protecting tube, manufacturing method therefor, and pressure-resistant layer | |
| CN110248782A (en) | Razor blade | |
| CN102292185A (en) | Fixed abrasive sawing wire | |
| EP3060721A1 (en) | Grinding motor and method of operating the same for rail applications | |
| CN105544326A (en) | Method and device for calculating polishing depth of polishing head of steel rail | |
| Shariff et al. | Comparative study on dry sliding wear behavior of various railroad steels | |
| CN112100901A (en) | Parameter optimization method for relieving abnormal abrasion of steel rail | |
| CN103273200A (en) | Laser cladding restoring method for die steel | |
| CN101627136B (en) | Cutlery and/or serving cutlery made of ferritic stainless steel with a martensitic case | |
| Grzesik et al. | Surface integrity generated by oblique machining of steel and iron parts | |
| Baumann et al. | Comparison between nanophase formation during friction induced surface wear and mechanical attrition of a pearlitic steel | |
| JPH0532076B2 (en) | ||
| US6548009B1 (en) | Method for controlling twist curvature of a disc head slider | |
| US20180117690A1 (en) | Methods for producing diamond grits for a wafer slicing system | |
| US20020086531A1 (en) | Process for monitoring a process, planarizing a surface, and for quantifying the results of a planarization process | |
| JP4873902B2 (en) | Operation support apparatus, operation support method, computer program, and computer-readable recording medium in continuous processing equipment for metal strip | |
| CN112643486B (en) | Abrasive belt wear prediction method in complex curved surface workpiece grinding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |