Why Does the Drill Have Color Differentiation? Do you Know the Reason for the Difference?

Drilling is a Very Extensive Processing Method in the Manufacturing Industry

When purchasing drills, many people choose it by drill bit color.

Does the Color Have Any Bearing on the Quality of the Drill? Which Color of the Drill is Better?

Q1: Is the Color of the Bit Related to the Quality?

1. The quality of the drill cannot be distinguished only by color. The color has no direct relationship with the quality.
2. The different color drills are mainly different in processing technology.
3. You can make a rough judgment from the color, but the current poor quality drills will also process to achieve the look of a high-quality drill.

Q2: What is the Difference Between Different Drill Bit Color?

1. High-quality fully-milled high-speed steel drill bitsoften appear in white.
2. Rolled drill bits can also be whitened by fine grinding of the outer circle.
3. Why is it high quality? Apart from the material itself, the quality control during the grinding process is also quite comparable to Strict.
4. Black is a nitrided drill bit. It is a chemical method to improve the durability of the tool.

Q3: What are the Processes of Producing Drill Bit Color

1. Black is rolled, the worst.
2. The white ones are trimmed and polished.
3. The tan drill bit is called a cobalt-containing drill in the industry.

Q4: Color Difference of Cobalt-Containing Diamond

Cobalt-containing diamonds were originally white and produced by grinding.

When they were later atomized, they were made into yellow-brown and commonly called amber.

M35 also has a gold color is called a titanium-plated drill, which is divided into decorative plating and industrial plating.

1. The decoration plating has no effect at all, it is beautiful and golden.
2. Industrial plating is very good, the hardness can reach HRC78, which is higher than that of cobalt-containing diamonds.

Q5: So From the Color Point of View, How to Choose?

1. In general, white is generally made of the high-speed steel drill bit, the quality should be the best.
2. The golden ones are titanium nitride plated and are generally either the best or poorly fooled.
3. The quality of black is also uneven. Some are made of poor carbon tool steel, which is easy to anneal and easy to rust, so it needs to be blackened.

Q6: Is There Any Other Way to Distinguish

1. Generally, when you buy a drill, you can see the trademark on the drill shank and the diameter tolerance mark.
2. The logo is clear, and the quality of laser or electric corrosion will not be too bad.
3. The edge of the character is bulging, the quality of the drill is poor.
4. In addition, it depends on the cutting edge of the drill tip. The edge of the full-grind drill is very good, and the spiral surface meets the requirements.