Lubricating grease for blaster head bearing of shot blasting machine

Abstract

The invention relates to lubricating grease for a blaster head bearing of a shot blasting machine. The lubricating grease comprises base oil, a thickening agent, a structural modifier, an extreme-pressure anti-wear agent and an antioxidant. The lubricating grease is prepared according to the following steps: adding the thickening agent and 40-60% of the base oil into a reaction kettle, carrying out stirring and heating to 210-220 DEG C, keeping the temperature for 8-12 minutes, carrying out cooling to 160-180 DEG C, adding the antioxidant, carrying out cooling to 130-150 DEG C, adding the extreme-pressure anti-wear agent, adding 10-30% of the base oil, carrying out cooling, continuing to carry out stirring, adding the remaining base oil, carrying out stirring and cooling to 90 DEG C or below, adding the structure improver, and uniformly carrying out mixing by stirring. The produced lubricating grease has a relatively high melting point, good structural stability and good shearing resistance, and the consistency variation of the lubricating grease in a strong shearing environment in the bearing is small, so that the adhesion of the lubricating grease is guaranteed. The condensationpoint of the base oil is low, the cone penetration degree of the lubricating grease is 290-310, and the low-temperature pumping performance of the lubricating grease is ensured. The lubricating greaseis suitable for lubricating requirements of the working conditions of the blaster head bearing of the shot blasting machine.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, and relates to a lubricating grease for a ball bearing of a shot blasting machine. Background technique [0002] Shot blasting machine is a processing technology that impacts steel sand and steel shots on the surface of material objects by high-speed throwing of steel sand and steel shots through a shot blasting machine. Powered by an electromechanical shot blaster, the high-speed projectiles thrown by the shot blaster are used to clean or strengthen the surface of metal workpieces. The shot blasting machine can clean various residues on the surface of metal workpieces, and can shake out sand, remove cores and clean castings. Shot blasting relies on the high-speed rotation of the impeller. The abrasive in the center of the impeller is pre-accelerated by the regulator and the impeller, and then sent to the blade area and then thrown out at a high speed. The speed can exceed 100m / s. Du...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of lubricating grease for the ball bearing of the shot blasting machine, select suitable thickener, base oil and additives, solve the temperature rise of the ball bearing lubrication of the ...

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