Point rail having hardened layer on working surface and its point rail working surface laser hardening treatment technology
A technology of hardening treatment and working surface, which is applied in the direction of tracks, roads, buildings, etc., can solve the problems of difficult control of heating form, thermal insulation performance, cooling medium stability, hardening treatment effect, and scientific quantification of treatment parameters, etc., to achieve hardening Ideal treatment effect, improved work efficiency, and increased service life
A technology of hardening treatment and working surface, which is applied in the direction of tracks, roads, buildings, etc., can solve the problems of difficult control of heating form, thermal insulation performance, cooling medium stability, hardening treatment effect, and scientific quantification of treatment parameters, etc., to achieve hardening Ideal treatment effect, improved work efficiency, and increased service life
CN1537956AInactive Publication Date: 2004-10-20济南钢铁集团新事业有限公司
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] The laser hardening treatment process of the working face of the sharp rail of the present invention: first remove the oil stains and rust on the working face of the sharp rail, dry and remove moisture, and then apply zinc phosphide paint for blackening treatment, and then pass 2 The hardening treatment equipment consisting of lasers, processing machine tools, and numerical control equipment performs laser hardening treatment on the working face of the switch rail. The hardening treatment parameters: the spot diameter is 14mm, the laser power is 1000W, and the scanning speed is 250mm / min. The depth of the hardened layer is 1mm. Can be polished. The technical parts not described in detail in the present invention are all known technologies.
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
A point rail with the hardened layer on its working surface is disclosed. A technology for hardening its working surface by laser includes such steps as removing oily dirt and rust, baking, coating zinc phosphide paint for blackening it, and using CO2 laser device to harden it. Its advantages are high effect and productivity and easy control.
Description
technical field [0001] The invention relates to the technical field of laser hardening treatment on a working face of a switch rail. Background technique [0002] The point rail is used on the railway turnout. Due to the special nature of the work, the wear degree of the working surface is relatively large. At present, in order to enhance the hardness and wear resistance of the point rail, most railway departments use conventional heat treatment methods to produce tempered martensite structure to improve the overall hardness and wear resistance of the point rail. However, it is difficult to control the heating form, thermal insulation performance, and cooling medium stability in this method, and it is impossible to scientifically quantify the processing parameters, which directly affect the effect of heat treatment, so it directly affects the hardness and wear resistance of the point rail, and the working less efficient. Contents of the invention [0003] The invention p...
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
20 Oct 2004
Publication
CN1537956A
- IPC
- C21D1/09; E01B7/02
- Inventors
- 孙庆水; 黄晓林