What is the difference between high -speed steel drill and tungsten steel drill?
2023-01-29
Many people only pay attention to the hardness of the drill when they use the drill bit, but they rarely know what the material of the drill is. In fact, our common drill bit is usually divided into high -speed steel drills and tungsten steel (hard alloy) drills. Let's take a look at what these two materials are different.
High -speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high -speed tool steel or front steel, commonly known as white steel.
High -speed steel knife is a tool that is tough and easier to cut than ordinary tools. High -speed steel has better toughness, strength, heat resistance than carbon tool steel. The cutting speed is higher than the carbon tool steel (iron carbon alloy) (iron carbon alloy) Many, so it is named high-speed steel; hard alloy is better than high-speed steel, and the cutting speed can be increased by 2-3 times.
Characteristic
High -speed steel red hard can reach 650 degrees.
High -speed steel strength and toughness are good. After the blade is grinded, the blade is sharp and the quality is stable. It is generally used to make small and complicated knives.
Hard alloy
Tungsten steel drill material material (hard alloy)
The main ingredients of the drill bitter are tungsten carbide and cobalt, which accounts for 99%of all ingredients, and 1%is other metals, so it is called tungsten steel (hard alloy). Tungsten steel is a sintering composite material composed of at least one metal carbide Essence Tungsten carbide, cobalt carbide, carbonized, titanium titanium titanium, carbonized crickets are common components of tungsten steel. The size of the carbide component (or phase) is usually between 0.2-10 microns, and carbide grains are combined with metal adhesives. The adhesive metal is generally iron metal, and it is commonly used cobalt and nickel. Therefore, there are tungsten cobalt alloys, tungsten nickel alloys and tungsten cobalt alloys. The tungsten steel drilling material sintering molding is to suppress the powder into a blank material, then enter the sintering furnace to heat it to a certain temperature (sintering temperature), and maintain a certain time (insulation time), and then cool down to obtain the tungsten steel material that needs the required performance.
Features:
Hard alloy red hardness can reach 800-1000 degrees.
Hard alloy cutting speed is 4-7 times higher than high -speed steel. High cutting efficiency.
The disadvantage is that the bending strength is low, the impact is poor, the brittleness is large, and the impact and vibration resistance capacity is low.
