Coated abrasive tool based on fiber substrate sand rope, polishing and grinding wheel and manufacturing method thereof

Abstract

The invention discloses a coated abrasive tool based on a fiber substrate sand rope. Fiber substrates containing abrasive grinding materials are twisted into a sand rope and are cured for obtaining the coated abrasive tool. The invention also discloses a polishing and grinding wheel manufactured by the coated abrasive tool based on the fiber substrate sand rope (or fiber substrate sand rope containing chopped fiber). The coated abrasive tool and the polishing and grinding wheel provided by the invention have the advantages that the three-dimension structure and the controllable degree in the processing process are sufficiently utilized for realizing the respective correspondence of different use environment and conditions, so the performance of the adhesive grounding materials and the fiber is sufficiently realized, the polishing and grinding performance is improved, and the use cost is reduced.

Description

technical field [0001] The invention relates to a coated abrasive and its converted product, in particular to a coated abrasive and a polishing wheel made of fiber-based sand rope. 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 harden...

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 polishing)

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]③ Nylon 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 polishing It will cause waste if it falls off; 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 polishing wheel to rise during the entire polishing 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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