Polishing and grinding wheel based on fiber sand ropes containing chopped fibers and preparation method thereof

Abstract

The invention discloses a polishing and grinding wheel based on fiber sand ropes containing chopped fibers and a preparation method thereof. The polishing and grinding wheel is formed by winding, shaping, curing the fiber sand ropes after the fiber sand ropes are processed through glue and / or base gel, wherein the fiber sand ropes contain the chopped fibers penetrating through the fiber sand ropes. According to the polishing and grinding wheel, surface grooves formed by three-dimensional structures of the fiber sand ropes themselves are more favorable for grinding, slag removing and cooling, and meanwhile a condition is provided for development of a self-sharp craze. Round structures of the fiber sand ropes themselves further enable certain gaps to be formed between the ropes in the forming process, so that the plane structure favorable for grinding, slag removing and cooling is formed. The chopped fibers penetrating through the fiber sand ropes form complete puncture to all the independent ropes as to improve the structural strength and interlayer stripping of the whole wheel and further improve safety performance and reduce loss caused by interlayer stripping and fracture.

Description

technical field [0001] The invention relates to a coated abrasive product, in particular to a polishing wheel based on a fiber sand rope containing chopped fibers. Background technique [0002] The various polishing and grinding tools currently produced mainly contain three major categories and have the following defects: [0003] ① Resin grinding wheel - due to compact structure, poor heat dissipation, hydraulic molding, and dense structure. General resin-bonded grinding wheels (bonded abrasives) are mainly made of abrasives and resin binders after mixing, molding, and heating and hardening. The use of this type of grinding wheel has problems such as the need for large cutting forces and serious heating of the workpiece. defect. The pores in the large porous grinding wheel (bonded abrasive) are generally filled with fillers (such as walnut shells, refined naphthalene, etc.) that can be burned (ie carbonized) at temperatures above 130 degrees during hardening treatment. f...

AI Technical Summary

Problems solved by technology

However, natural fibers will also carbonize and fail under such conditions

[0004]② Hemp wheel - low polishing efficiency, such as (several layers of sisal are sewn together, only the end face participates in grinding)

There is following shortcoming in the sisal fiber polishing wheel prepared by this method: one, because the sisal fiber length used has only 4-12cm, thus the sisal fiber of polishing wheel comes off easily in use, makes the service life of polishing wheel shortening; 2. Due to the limitation of needle punching density, it is impossible to ensure that any part of the polishing wheel can be tightly bonded, which will also affect the use effect of the polishing wheel

[0005]③Nylon wheel—the abrasive utilization rate is not high, because the low heat generation of nylon TG will cause softening, resulting in a decrease in the holding force of the abrasive, so that the abrasive does not fully participate in the grinding It will fall off after being cut and cause waste; at the same time, it may contaminate the surface of the workpiece due to heat and softening

The polishing wheel produced by this method is molded but has no porous material, so the whole structure is very dense and has no gaps, which will easily cause the surface temperature of the grinding wheel to rise during the entire grinding process. The workpiece to be ground will also have a large surface temperature rise, which will cause stress concentration and may contaminate the surface of the workpiece to be ground

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