Method for polishing surface of steel rail and method for detecting residual stress of steel rail
A residual stress and rail technology, used in the field of detecting residual stress of rails and grinding the surface of rails, can solve the problems of low accuracy of results, small contact area between resistance sheets and rails, and uneven surface of rails, so as to achieve a large contact area, improve The effect of testing accuracy
Active Publication Date: 2015-04-15
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Usually, when the rail sample is used to test the residual stress using the CM-2B static strain measurement and analysis system, it is necessary to use the resistance sheet to stick on the rail head, rail body and rail bottom, because the rail head, rail body, rail bottom There is a certain degree of unevenness, which needs to be polished, but the surface of the rail is not smooth after being polished by traditional grinding methods (such as a grinder), resulting in a small contact area between the resistor sheet and the rail, which leads to low accuracy of the test results
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to specific examples.
[0013] In an exemplary embodiment of the present invention, the method for detecting the residual stress of a rail comprises the steps of: coating a first abrasive cloth on the surface of a rotating gun head of a grinding machine, and then using the rotating gun head coated with the first abrasive cloth Grinding the surface of the rail; coating the second abrasive cloth on the surface of the rotating gun head of the grinding machine, and then using the rotating gun head coated with the second abrasive cloth to grind the surface of the rail again until the surface of the rail is ground and smooth ; Paste a resistance sheet on the surface of the rail to test the residual stress, wherein the roughness of the first gauze is greater than the roughness of the second emery cloth, and the surface of the rail includes a rail head surface, a rail body surf...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for polishing the surface of a steel rail and a method for detecting the residual stress of the steel rail. The method for detecting the residual stress of the steel rail comprises the following steps of: cladding first abrasive cloth on the surface of the rotary gun head of a polishing machine, and then polishing the surface of the steel rail by the rotary gun head cladded with the first abrasive cloth; cladding second abrasive cloth on the surface of the rotary gun head of the polishing machine, then polishing the surface of the steel rail by the rotary gun head cladded with the second abrasive cloth again until the surface of the steel rail is even and is smooth; and pasting a resistor disc on the surface of the steel rail, and testing the residual stress, wherein the toughness of the first abrasive cloth is greater than that of the second abrasive cloth, the surface of the steel rail comprises a rail head surface, a rail body surface and a rail bottom surface. According to the invention, through polishing, the resistor disc is ensured to be stable in contact with each part of the steel rail, and the contact area is great, thus the testing accuracy of the residual stress of the steel rail can be improved.
Description
technical field [0001] The invention relates to the technical field of detection of mechanical properties of metal materials, in particular to a method for grinding the surface of a rail and a method for detecting the residual stress of the rail. Background technique [0002] Usually, when the rail sample is used to test the residual stress using the CM-2B static strain measurement and analysis system, it is necessary to use the resistance sheet to stick on the rail head, rail body and rail bottom, because the rail head, rail body, rail bottom There is a certain unevenness in the etc., which needs to be polished, but the surface of the rail is not smooth after being polished by traditional grinding methods (such as a grinder), resulting in a small contact area between the resistor and the rail, which leads to low accuracy of the test results. Contents of the invention [0003] In view of the above-mentioned deficiencies existing in the prior art, one of the purposes of the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B24B7/14B24B49/02
Inventor 王金洪
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP