Solidified-free dual-phase abrasive particle tool and manufacture method for same

Abstract

The invention provides a solidified-free dual-phase abrasive particle tool and a manufacture method for the same. A matrix of the solidified-free dual-phase abrasive particle tool is made of 304 stainless steel bars in which a martensite / ferritic structure is left after special local thermal treatment; and iron powder and white corundum abrasive particles are solidified by polyvinyl acetate on a magnetic field of the 304 stainless steel bars. Under reciprocating and circumferential effects of an external rotating magnetic field, the solidified-free dual-phase abrasive particle tool carries outaxial reciprocating motion and axial rotating motion on the inner wall of a deep hole of a work piece respectively. The iron powder and white corundum solidified on the 304 stainless steel bars keepgetting dissolved in a grinding fluid with the polyvinyl acetate, so a solidified abrasive particle state is gradually transformed to a free abrasive particle state. Grinding work is completed by thesolidified abrasive particles relative to the inner wall of the deep hole during an earlier stage of processing; and subsequent precision polishing is completed by the free abrasive particles relativeto the inner wall of the deep hole at a middle and later stage. The surface of the inner wall of the micro deep hole formed through processing with the tool is of good quality; surface roughness is lower than Sa0.02mum; and processing efficiency is far higher than processing efficiency of traditional processing methods.

Description

technical field [0001] The invention relates to a consolidated free dual-phase abrasive tool and a manufacturing method thereof. Background technique [0002] The micro-deep hole structure is currently widely used in various industries, such as tactical missile liquid / air pipelines, precision equipment airway control, medical equipment biopsy needles, etc. Due to the special requirements for flow, pressure, sampling, etc., the requirements for the inner wall size and surface quality of micro-deep holes are extremely high. Especially for the surface quality of the inner wall, it is usually required that the surface roughness is not higher than Sa0.15μm. [0003] At present, the processing methods for micro-deep hole structures include mechanical processing, EDM, electrolytic processing, abrasive processing, chemical erosion, etc., each of which has its advantages and disadvantages. in, [0004] The machining method is mainly micro-drilling. This method has efficiency and c...

AI Technical Summary

Problems solved by technology

This method has the highest surface quality and almost no residual and secondary scratches, but its efficiency is extremely low and it is difficult to mass-produce

[0009] In view of the problems of narrow applicability, low processing surface quality, low processing efficiency and high equipment cost in the above processing methods, it is urgent to develop a processing tool, device and method that combines efficiency, quality and cost.

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