What drill bits are used for drilling steel plates?
In the field of metal processing, steel plate drilling is a common but technically demanding operation. Choosing the right drill bit not only improves work efficiency, but also extends tool life. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of drill bit selection, usage skills and precautions for steel plate drilling.
1. Comparison of commonly used drill bit types for steel plate drilling
| Drill type | Applicable scenarios | Advantages | Disadvantages |
|---|---|---|---|
| High Speed Steel Drill Bits (HSS) | Ordinary steel plate, low carbon steel | Low cost and strong versatility | Not resistant to high temperatures and easy to wear |
| Cobalt alloy drill bit (HSS-Co) | High hardness steel plate, stainless steel | High temperature resistance and long life | higher price |
| Carbide drill bit | Super hard steel plate, batch processing | Excellent wear resistance | Highly brittle and prone to chipping |
| Coated drill bits (TiN/TiAlN) | High precision machining | Low friction coefficient and good heat dissipation | Requires professional equipment for grinding |
2. Recent industry hot spots
1.New Nano Coating Technology: A certain brand’s latest composite-coated drill bit showed a 300% lifespan increase in testing, which has become a hot topic in recent metal processing forums.
2.Intelligent drilling parameter recommendation system: Many factories have begun to use AI algorithms to automatically match drill bit types and rotational speed parameters, significantly reducing the scrap rate.
3.Environmentally friendly cutting fluid: With the tightening of environmental protection policies, the combination of water-based cutting fluid and special drill bits has received widespread attention.
3. Key indicators for drill bit selection
| indicator | reference standard | Things to note |
|---|---|---|
| Drill bit material | Select according to steel plate hardness | It is recommended to use cemented carbide if the hardness is ≥HRC50 |
| Drill tip angle | 118°(universal) 135°(hard material) | The smaller the angle, the greater the axial force |
| Helix angle | 30° (universal) | Large helix angle facilitates chip removal |
| Coating type | TiAlN (high temperature) | Gold coatings usually contain titanium |
4. Operating skills and safety regulations
1.Pre-drilled pilot holes: For steel plates with a thickness exceeding 12mm, it is recommended to use a center drill to position them first, and then expand the holes in stages.
2.cooling solution: External cooling should be used during continuous processing. Recent test data shows that spray cooling is 40% more efficient than oil immersion cooling.
3.Speed formula: Vc=π×D×n/1000 (Vc cutting speed, D drill diameter, n speed), it is recommended that Vc be controlled at 20-30m/min for ordinary steel plates.
4.Frequently Asked Questions: When you encounter chips sticking to the drill bit, you should stop and clean them immediately to avoid hole diameter deviation caused by built-up edge.
5. Drill bit purchasing trends in 2023
According to recent e-commerce platform sales data, the following characteristics are shown:
| price range | market share | Hot selling specifications |
|---|---|---|
| 50-100 yuan | 42% | Φ6.5/Φ8.5mm |
| 100-300 yuan | 35% | Φ10/Φ12mm cobalt-containing model |
| More than 300 yuan | 23% | Package package (including grinding service) |
Special reminder: Recently, some low-quality counterfeit drill bits have appeared on the market. Consumers need to look for formal channels. It is recommended to give priority to brand products that have passed ISO9001 certification.
6. Expert advice
1. For occasional DIY users, it is recommended to purchase a universal drill bit set made of HSS-M35.
2. Professional processing workshops should consider equipping step drills with different materials to adapt to changing production needs.
3. The latest industry research shows that the rational use of drill bit grinding equipment can reduce tool costs by more than 60%.
From the above analysis, it can be seen that the selection of drill bits for steel plate drilling requires comprehensive consideration of material characteristics, processing requirements and cost factors. With the advancement of technology, the combination of smart drill bits and IoT technology will become a new development direction in the future.
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