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Will a core drill go through metal?

Hollow drills can penetrate metal. A hollow drill is an industrial drilling tool that removes material through a multi-blade annular cutting structure, primarily used for machining metal materials. Its design allows the chips generated during cutting to be expelled through the hollow center of the drill, reducing the risk of clogging and bit jamming.

Carbide steel plate drills (hollow drills) are essential tools in metal processing, specifically designed for efficiently penetrating various metal sheets. While direct information points to chromium metal powder, chromium powder, as a high-quality alloying element, is often used to enhance the hardness and wear resistance of drilling tools. Currently, our store offers ferrochromium powder produced via mechanical processing, with a fine particle size of 300 mesh and a chromium content exceeding 60%, ensuring superior physical properties. This chromium powder is not only suitable for processes like thermal spraying but also serves as an ideal raw material for manufacturing high-performance carbide drill bits. Our in-stock chromium powder is sourced from Hebei and available nationwide. It is non-hazardous, safe, and reliable. If you are seeking solutions to improve drilling tool performance or need further details about the application of chromium powder in carbide steel plate drills, feel free to contact us for more professional advice and technical support.

Will a core drill go through metal

Specific Applications and Advantages of Hollow Drills in Penetrating Metal

1. High-Efficiency Drilling: When used with magnetic drills, hollow drills can achieve 8-10 times the drilling efficiency of conventional drill bits. For example, they can complete a 40mm diameter hole in a 30mm steel plate in just 25 seconds.

2. Wide Applicability: In industries such as steel structure engineering, rail transit, and shipbuilding, hollow drills can machine holes with diameters ranging from 12-150mm and depths of 25-200mm.

3. Effective Chip Removal: The three-blade combination (outer blade, middle blade, and inner blade) design, coupled with a spring ejector rod, enables automatic chip removal, ensuring smooth drilling.

4. Strong Wear Resistance: Mainstream products feature TiAlN coating technology, significantly enhancing blade wear resistance, making them suitable for prolonged, high-intensity metal processing tasks.

How Thick of a Steel Plate Can a Hollow Drill Bit Drill?

The thickness of steel plate a hollow drill bit can drill depends on the size and quality of the bit. Please select the appropriate drill bit based on specific requirements.

I. Principles and Usage Guidelines for Hollow Drill Bits

A hollow drill bit is a tool used for drilling holes in metal materials such as steel plates, stainless steel, and cast iron. Its hollow internal structure allows coolant to pass through the bit, cooling both the drill and the material surface while expelling the generated chips. The heat produced during cutting is also dissipated in time, preventing overheating deformation of the workpiece surface and internal stress buildup.

Before using a hollow drill bit, ensure the following:

  1. Carefully read the drill bit’s instruction manual to understand its structure, usage methods, and precautions.
  2. Configure coolant, ensuring its flow rate and quality meet requirements.
  3. During drilling, strictly adhere to the rotational speed and feed rate specified for the drill bit to prevent overheating or breakage.

II. How Thick of a Steel Plate Can a Hollow Drill Bit Drill?

The thickness of steel plate a hollow drill bit can drill depends on the size and quality of the bit.

Generally, hollow drill bits commonly used in metalworking factories have diameters ranging from 10-200mm and drilling depths of 10-1000mm. For hollow drill bits of different specifications, the maximum thickness of metal plate they can drill will vary.

For example, a 50mm diameter hollow drill bit with a maximum drilling depth of 150mm can typically drill steel plates with thicknesses between 20-50mm. Meanwhile, a 200mm diameter hollow drill bit with a maximum drilling depth of 650mm can usually drill steel plates with thicknesses between 100-200mm.

Note that hollow drill bits must be used according to standards during drilling to avoid bit breakage or other safety incidents caused by overloading.

III. Conclusion

Hollow drill bits offer fast drilling speeds, high efficiency, excellent hole quality, and durability, making them a common tool in many industries. When using hollow drill bits, it is essential to select the appropriate size and specifications based on actual needs and follow usage guidelines to ensure drilling effectiveness and safety.

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