CNC Knowledge: The difference between steel at high speed and tungsten steel is very clear!

High speed steel

High speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as wind or front steel, this which means that it can be hardened even when cooling in the air, and it is very sharp. There is also white steel.High speed steel is a complicated alloy steel that contains carbides such as tungsten, molybdenum, chrome, pyrine, cobalt, etc. to form elements. The total amount of alloy elements is around 10 to 25%. It can always maintain high hardness when the high speed cut generates a high fever (around 500 ° C), and the HRC can be greater than 60.

This is the main characteristic of high -speed steel redness. After extinction and low -temperature recovery of carbon tools, although there is a high hardness at room temperature, when the temperature is greater than 200 ° C, the hardness falls strongly and the hardness of 500 ° C has fallen to degree of similarity with the state of receipt. Due to the good redness of steel at high speed, it compensates for the fatal disadvantages of carbon tool steel.High speed steel is mainly used to create complex thin blades and an impact on metal cutting tools.

Tungsten steel

Tungsten steel (hard alloy) has a series of excellent performance such as high hardness, wear resistance, strong resistance and tenacity, heat resistance, corrosion resistance, in particular Its high hardness and its resistance to abrasion. at 1000 ° CTungsten steel, the main ingredients are tungsten carbide and cobalt, representing 99% of all ingredients, and 1% are other metals. industry.Tungsten steel is a silver composite material composed of at least one metal carbide. Tungsten carbide, cobalt carbide, titanium titanium in titanium, charred crickets are common components of tungsten steel. The size of the carbide component (or phase) is generally between 0.2 and 10 microns, and the carbide grains are combined with metal adhesives. Adhesive metal is generally iron metal, and is commonly used with cobalt and nickel. Consequently, there are tungsten cobalt alloys, tungsten nickel alloys and cobalt alloys in titanium in tungsten.

Tungsten steel sintering consists in removing the powder in an empty material, then heating it in a fried oven at a certain temperature (sintering temperature), and maintaining a certain time (thermal insulation time), then to Cool to obtain tungsten steel materials that need other performance.① Cobalt hard alloy in tungstenThe main ingredients are tungsten carbide (WC) and adhesive cobalt (CO). Its brand is made up of “yg” character (“hard, cobalt” Chinese Pinyin). For example, YG8 indicates the average WCO = 8%, and the rest is a tungsten cobalt alloy with tungsten carbide.② hard titanium titanium alloy in titaniumThe main components are tungsten carbide, titanium carbide (ICT) and cobalt. Its brand number is first made up of “YT” (“hard, titanium” Chinese Pinyin) and the average content of titanium carbide. For example, YT15 means a hard titanium in titanium in titanium with a medium ICT = 15%, and the others are the tungsten and cobalt content with tungsten carbide and cobalt.③ Tungsten titanium 铌 (类) alloy hardThe main ingredients are tungsten carbide, titanium carbide, charred (or charred 铌) and cobalt.

This type of hard alloy is also called universal hard alloy or universal hard alloy. Its brand number is made up of “YW” (“Hard” and “Wan” Chinese Pinyin first) plus the serial number, like YW1.Tungsten steel has a series of excellent performance such as high hardness, abrasion resistance, good resistance and tenacity, heat resistance, corrosion resistance, in particular its high hardness and Its resistance to wear, which remains fundamentally unchanged even at the temperature from 500 ° C to 1000 ° C, it always has high hardness. Hard alloys are widely used as materials, such as car knives, strawberries, drills, knives, etc. The cutting speed of the new hard alloy is hundreds of times carbon steel.