Method for manufacturing abrasive wheels for high-speed railway track slabs by brazing diamonds with laser

Abstract

A method for manufacturing abrasive wheels for high-speed railway track slabs by brazing diamonds with laser comprises the following steps: 1) mixing; 2) coating; 3) spraying; and 4) brazing. The abrasive wheels have the advantages of high grinding efficiency, long life, good grinding quality and the like. Compared with other brazing methods, the method has the following advantages: the energy density of the laser heat source is high, temperature raising and reducing are fast, local heating can be carried out and the heat affected zone is small; the laser beams can be transported by optical fibers, thus machining can be carried out on the parts which are not easy to braze by the conventional methods, the flexibility is good, the workpieces with complex geometrical shapes can be brazed and super-long, super-large, super-thin and super-fine special tools can be manufactured.

Description

technical field

[0001] The invention belongs to the field of abrasive tool manufacturing, in particular to a production method for manufacturing high-speed railway track plate grinding wheels by laser brazing diamond. Background technique

[0002] On August 1, 2008, the Beijing-Tianjin intercity high-speed railway with a speed of 350 kilometers per hour was put into operation, creating a new era of high-speed railway in my country. In order to ensure the smoothness, stability and safety of the track lines, the steel rails of my country's high-speed railways are not laid on ordinary sleepers, but on track slabs that have been precisely polished by machine tools - Borg slabs. Grinding is required at the place where the Borg plate is connected to the rail, including two inclined sides, a bottom, and two grooves at the junction of the bottom and both sides, forming a complex special-shaped surface with a grinding allowance of 2mm and a grinding accuracy of 0.1 mm.

[0003] The...