Experimental Study on Chemical-Mechanical Synergistic Preparation for Cemented Carbide Insert Cutting Edge

Area of Science:

• Materials Science
• Manufacturing Engineering
• Surface Engineering

Background:

• Cemented carbide inserts often exhibit edge defects like burrs and micro-breakages without proper preparation.
• These defects negatively impact cutting performance and tool lifespan.
• Existing edge preparation methods may be insufficient or inefficient.

Purpose of the Study:

• To develop and optimize a novel chemical-mechanical synergistic preparation (CMSP) method for cemented carbide insert cutting edges.
• To identify optimal parameters for both the polishing slurry and the CMSP process.
• To evaluate the effectiveness of CMSP in improving the edge quality of cemented carbide inserts.

Main Methods:

• Construction of a dedicated CMSP device for insert cutting edges.
• Optimization of polishing slurry composition using Taguchi method, grey relation analysis, and fuzzy inference.
• Orthogonal experiments, Taguchi method, and ANOVA to determine optimal process parameters (rotational speed, swing angle, input frequency).

Main Results:

• Optimized slurry: 10 wt% abrasive, 10 wt% oxidant, 2 wt% dispersant, pH 8.
• Optimal CMSP parameters for linear edge: 90 rpm, 6° swing angle, 5000 Hz.
• Optimal CMSP parameters for circular edge: 90 rpm, 6° swing angle, 7000 Hz.
• Rotational speed had the most significant impact on edge preparation.

Conclusions:

• The developed CMSP method is effective in preparing cemented carbide insert cutting edges.
• Optimized parameters ensure high-quality edge preparation, reducing defects.
• CMSP presents a viable and efficient solution for tool enterprises seeking to improve insert quality.