Diamond Cutting Blade Surface Control for Tungsten Contamination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Diamond cutting tools formed by laser work tend to contaminate the work material due to tungsten adherence on the cutting blade, which is a result of tungsten carbide-based alloys used in the base metal, leading to contamination of the work material.
Innovation Solution
The diamond cutting tool is designed with a region A on the cutting blade surface having a surface roughness Ra of not more than 0.2 μm and a tungsten element concentration of not more than 1 mass%, achieved through laser work followed by physical and chemical removal of tungsten from the cutting blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser work is used to form the cutting blade on the diamond part, then the cutting blade can be formed efficiently, but tungsten adheres to the diamond surface causing contamination of the work material
Solution Approach 1:
The invention applies local quality by creating a specific region (region A) on the diamond part with controlled surface roughness (Ra ≤ 0.2 μm) and tungsten concentration (≤ 1 mass %). This localized treatment ensures that the critical cutting edges have low tungsten adhesion while other areas can tolerate higher concentrations, thus preventing work material contamination without compromising the overall manufacturing efficiency
Solution Approach 2:
The invention changes the surface roughness parameter of region A to Ra ≤ 0.2 μm, which fundamentally alters the surface properties to reduce tungsten adhesion. By controlling this physical parameter, the invention transforms the diamond surface from a state prone to tungsten contamination to one that repels tungsten adherence, thereby solving the contamination problem while maintaining laser work efficiency
2Object-generated harmful factors
If the surface roughness is reduced to prevent tungsten adhesion, then tungsten contamination is prevented, but the manufacturing complexity increases
Solution Approach 1:
The invention applies preliminary action by pre-forming region A with controlled surface roughness and tungsten concentration before the final cutting operation. This advance preparation ensures that when laser work is performed, tungsten adhesion is already minimized in the critical areas, eliminating the need for complex post-processing or sophisticated real-time control systems
Solution Approach 2:
The invention segments the diamond part into distinct regions, with region A being the specifically treated area that bridges the rake face, ridge line, and flank face. By dividing the surface into functional zones with different requirements, the invention simplifies the overall treatment approach while effectively controlling tungsten contamination in the most critical areas
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents contamination of the work material by tungsten, ensuring a high-quality surface finish and effective cutting performance.
Implementation Method 1
laser work is widely used as the work method for the diamond cutting tools
Implementation Method 2
When polishing work using a grindstone is carried out as a work method for forming a cutting blade on SCD or BLPCD in the diamond cutting tool
Implementation Method 3
When polishing work using a grindstone is carried out as a work method for forming a cutting blade on SCD or BLPCD
Data Source
AI summary
A diamond cutting tool comprises a base metal part and a diamond part joined to the base metal part, wherein the base metal part is made of an alloy containing tungsten carbide, the diamond part configures at least a cutting blade, the cutting blade comprises a portion of a rake face, a portion of a flank face, and a ridge line at which the rake face and the flank face cross, the diamond cutting tool has a region A, the region A is a region that is present bridging over the three, which are the rake face, the ridge line, and the flank face on the surface of the cutting blade, and the region A has a surface roughness Ra of not more than 0.2 μm and a concentration of tungsten element of not more than 1 mass %.