Sepiolite-based high-temperature sliding plate lubricating coating and preparation method thereof

Abstract

Provided is a sepiolite-based high-temperature sliding plate lubricating coating. The sepiolite-based high-temperature sliding plate lubricating coating comprises, by weight, 10-20 parts of sepiolite powder, 20-30 parts of squamiform graphite micro powder, 12-18 parts of waterborne fluorocarbon emulsion, eight to 12 parts of silica sol, three to five parts of hexagonal boron nitride, two to four parts of polyethylene glycol, one to three parts of propylene glycol, 0.6 to one part of xanthan gum, 0.2-0.3 part of coupling agents, 0.3-0.5 part of dispersing agents, 0.1-0.2 part of antifoaming agents and the balance water. Firstly, the sepiolite powder is prepared, then the mixed liquid of the polyethylene glycol and the xanthan gum, the mixed liquid of the sepiolite powder, the squamiform graphite micro powder, the waterborne fluorocarbon emulsion, the coupling agents and the dispersing agents, the hexagonal boron nitride, the antifoaming agents and the water are added to a ball mill to be mixed and ground, and are mixed and dispersed, and the finished coating is prepared. Heat transfer is effectively relieved by adding the sepiolite powder, the erosion of molten steel and slag to a sliding plate water opening is relieved, the inoxidizability of the sliding plate lubricating coating is improved, and the service life of a sliding plate is guaranteed.

Description

technical field [0001] The invention relates to a sliding nozzle lubricating coating, in particular to a water-based sliding coating which can improve the surface lubrication and high-temperature oxidation resistance of the sliding nozzle, and belongs to the field of lubrication. Background technique [0002] The slide plate is the most critical component among the refractory components of the sliding nozzle. It needs to be in contact with high-temperature molten steel for a long time, repeatedly withstands the chemical erosion and physical erosion of molten steel, and the mechanical wear between the slide plates during opening and closing. The flow needs to be lubricated with high temperature resistant and anti-oxidation lubricating paint on the slippery surface. [0003] At present, most refractory skateboard brick factories in my country use the DSS skateboard lubricating coating developed by Japan Daxin Co., Ltd. Although the lubricating effect is better, the price is...

AI Technical Summary

Problems solved by technology

[0007] The above technical solutions all use hexagonal boron nitride, carbon black and lithium-based bentonite. The high price makes it difficult for enterprises to accept and lose their competitiveness.