Let you identify tungsten steel drill bits and white steel drill bits

We often encounter many problems when purchasing cutting tools, such as how to choose commonly used drill bits? Today I will tell you how to distinguish between tungsten steel drill bits and white steel drill bits? Specifically, it can be distinguished by the following five points:

1. Difference in terms of weight. It is simple and straightforward. Due to the heavy weight of tungsten steel drill bits, tungsten steel drill bits of the same specifications are heavier than white steel drill bits. You can distinguish them by weighing them in your hand. This is one of the easy ways.

2. In terms of color, tungsten steel drill bits have a bright and black appearance, so they are also called tungsten steel. White steel drill bits have a bright and whitish appearance.

3. The difference in coating is that the coating color of tungsten steel drill bits is purple, while that of white steel drill bits is pure black or dull yellow.

4. In terms of price, the price of tungsten steel drill bits is high, while the price of white steel drill bits is much lower, usually 1/3 of tungsten steel drill bits and 1/10 of Shenzhen.

5. Differences in use: Tungsten steel drill bits have fast cutting speed and long service life, while white steel drill bits are easy to wear and have low service life.

Tungsten steel drill bit material, tungsten-containing alloy tungsten steel products contain about 10%-18% cobalt. Tungsten steel is a hard alloy, also known as tungsten-titanium alloy. The hardness is HRA90-93, second only to diamond. Because of this, tungsten steel products (commonly known as tungsten steel watches) are not easily worn. It is often used in the manufacture of turning tools, various drill bits, milling cutters, glass knives, tile knives, etc. It is hard and not afraid of annealing, but relatively brittle. Belongs to the list of rare metals.

    Tungsten steel drill bits can also be distinguished from ordinary drill bits or white steel drill bits by sparks. Grind them on an ordinary gray grinding wheel. The sparks of tungsten steel drill bits are dark red and difficult to grind. The sparks of high-speed steel drill bits or white steel drill bits are brighter. Tungsten steel drill bits are brittle, and when dropped from the hand, a piece of the cutting edge will break off. White steel drill bits are very tough and will not chip easily. Tungsten steel drill bits have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. In particular, its high hardness and wear resistance remain basically unchanged even at a temperature of 500°C. , still has high hardness at 1000°C. Tungsten steel drill bits are tools used to drill through holes or blind holes in solid materials and to expand existing holes. Our common tungsten steel drill bits mainly include twist drills, flat drills, center drills, deep hole drills and nesting drills. Although reamers and countersinks cannot drill holes in solid materials, they are also customarily classified as drill bits.