How to sharpen tungsten steel knife
Among the hot topics on the Internet in the past 10 days, tool maintenance and DIY skills have attracted much attention, especially the method of sharpening tungsten steel knives. Tungsten steel knives are widely used in industrial cutting and precision machining fields due to their high hardness and wear resistance, but how to polish them correctly has become a pain point for many users. This article will combine hot topics to introduce in detail the grinding steps, tool selection and precautions for tungsten steel knives.
1. Characteristics and grinding difficulties of tungsten steel knives
The hardness of tungsten steel (tungsten carbide) is as high as HRA90 or above. It is difficult to handle with traditional sharpening stones, so diamond grinding tools or silicon carbide grinding wheels need to be used. Here’s how tungsten steel compares to other tool materials:
| Material type | Hardness (HRA) | Suitable for grinding tools |
|---|---|---|
| Tungsten steel | 90-94 | Diamond grinding disc/grinding wheel |
| high speed steel | 82-87 | Alumina grindstone |
| carbon steel | 60-65(HRC) | Ordinary oil stone |
2. Recommendation of grinding tools (top 3 best sellers on the entire network)
| Product name | Material | Granularity | Applicable scenarios |
|---|---|---|---|
| XX diamond sharpening plate | Nickel plated diamond | 400/1000 mesh | Fine sharpening |
| YY CNC grinding wheel | silicon carbide | 180 mesh | Quickly remove defects |
| ZZ electric knife sharpener | Composite abrasive | Multi-level adjustment | Batch processing |
3. Detailed polishing steps
1.security check: Wear goggles and secure the knife;
2.Coarse grinding stage: Use 180-400 mesh diamond tools to repair chipping, maintaining an included angle of 15°-20°;
3.Fine grinding stage: Switch to 800-1000 mesh tools and polish in the same direction until the edge is burr-free;
4.Polishing: Use a leather wheel to apply 0.5μm diamond abrasive paste to polish the blade surface.
4. Answers to recent hot questions
| question | solution |
|---|---|
| There are too many sparks when polishing | Reduce pressure, use coolant |
| The cutting edge is slightly chipped | Check whether the tool granularity is too coarse |
| Low grinding efficiency | Replace with higher power equipment |
5. Things to note
• Avoid local overheating causing the alloy layer to fall off
• Check edge straightness every 30 seconds of grinding
• It is recommended to use a professional grinder for industrial grade tools
• Knife sharpeners with angle guides are available for home use
According to data monitoring across the entire network, searches related to "tungsten steel knife grinding" have increased by 37% in the past 10 days, especially on machining forums and short video platforms (the #toolmaintenance topic has been played 12 million times). Mastering the correct grinding method can extend the service life of the tool by 3-5 times. It is recommended that users choose tools and processes based on actual needs.
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