The introduction of cemented carbide, what are the main contents of cemented carbide

Tungsten carbide is an alloy material made by powder metallurgy process of hard compounds of refractory metals and bonded metals. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, especially its high hardness and wear resistance, which basically remains unchanged even at a temperature of 500, and still has a high hardness at 1000. Tungsten carbide is widely used as tool materials, such as turning tools, milling cutters, planer cutters, drills, boring cutters, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel, and can also be used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult-to-machine materials.

Cemented carbide is an alloy material made of non-ferrous metals such as tungsten, titanium, and cobalt through powder metallurgy process. It has higher hardness and better wear resistance than high-speed steel, and is suitable for high-speed machining and long-term processing; Due to the better performance of the newly launched CNC equipment, the demand for cemented carbide materials is also increasing.

Tungsten carbide is divided into tiny particles and nanoparticles based on the size of its powder particles. The smaller the particles, the higher the hardness. However, the higher the hardness, the more brittle the material, when processing the workpiece with a cemented carbide milling cutter, it is easy to cause damage to the tool due to equipment vibration or impact, so the performance of the equipment used must be confirmed in advance before purchasing the product; In addition, because cemented carbide ** is higher than high-speed steel**, special attention should be paid to the occurrence of breakage.

Summary. Tungsten carbide is divided into three categories according to its composition and performance characteristics: tungsten cobalt, tungsten titanium cobalt, and tungsten titanium tantalum (niobium).

Tungsten carbide is divided into three categories according to its composition and performance characteristics: tungsten cobalt, tungsten titanium cobalt, and tungsten titanium tantalum (niobium).

1) The main components of tungsten cobalt cemented carbide are tungsten carbide (WC) and cobalt, and the grade is expressed by the code YG, followed by the percentage value of cobalt content. For example, YG6 represents tungsten cobalt cemented carbide with a cobalt content of 6%, and tungsten carbide content is 94%.

2) The main components of tungsten titanium cobalt cemented carbide are tungsten carbide (WC), titanium carbide (TIC) and cobalt, and the grade is expressed by the code YT, followed by the percentage value of titanium carbide content. For example, YT15 represents tungsten, titanium, and cobalt cemented carbide with a titanium carbide content of 15%.

3) Tungsten titanium tantalum (niobium) cemented carbide This kind of cemented carbide, also known as general cemented carbide or universal cemented carbide, is mainly composed of tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TAC) or niobium carbide (NBC) and cobalt. The grade is coded YW.

1. Tungsten cobalt cemented carbide:

The main components are tungsten carbide (WC) and the binder cobalt (CO). Its grade is composed of the "year with volt yg" line empty ("hard, cobalt" two characters in Chinese pinyin prefix) and the average cobalt content percentage. For example, YG8 means that the average WCO = 8%, and the rest is tungsten carbide tungsten cobalt-based carbide.

Generally, tungsten and cobalt alloys are mainly used in: cemented carbide tools, molds and geological and mineral products.

2. Tungsten, titanium, cobalt, cemented carbide.

The main components are tungsten carbide, titanium carbide (TI) and cobalt. Its grade is composed of "yt" (the prefix of "hard, titanium" in Chinese pinyin) and the average content of titanium carbide. For example, YT15 indicates an average TIC = 15%, and the rest is tungsten carbide and cobalt content of tungsten, titanium and cobalt cemented carbide.

3. Tungsten, titanium, tantalum (niobium) cemented carbide.

The main components are tungsten carbide, titanium carbide, tantalum carbide (or niobium carbide) and cobalt. This type of cemented carbide is also known as general-purpose cemented carbide or universal cemented carbide. Its grade is composed of "yw" (the prefix of "hard" and "10,000" in Chinese pinyin) plus a sequential number, such as yw1.

High hardness (86 93HRA, equivalent to 69 81HRC);

Good heat hardness (up to 900 1000, keep 60HRC);

Good abrasion resistance. Tungsten carbide tools have 4 7 times higher cutting speed and 5 80 times longer tool life than HSS. Manufacture molds, measuring tools, the service life is 20 150 times higher than alloy tool steel. It can cut hard materials of about 50HRC.

However, cemented carbide is brittle, can not be cut, and is difficult to make a complex shape of the overall tool, so it is often made into different shapes of inserts, welding, bonding, mechanical clamping and other methods to install on the cutter body or mold body for use.

Summary. Tungsten carbide: high hardness (86 93HRA, equivalent to 69 81HRC); Tensile strength of industrial pure aluminum:

80~100mpa;Common aluminum alloys: Tensile strength of anti-rust aluminum 5A50: 265MPa; Tensile strength of 3A21:

167mpa;Tensile strength of duralumin 2A11: 370MPa; Tensile strength of 2A12: 390 420MPa; Tensile strength of 2A13:

315~345mpa;Hope it helps.

Tungsten carbide: high hardness (86 93HRA, equivalent to 69 81HRC); Tensile strength of industrial pure aluminum: 80 100MPa; Common aluminum alloys:

Tensile strength of anti-rust aluminum 5A50: 265MPa;Tensile strength of 3A21: <167MPa;Tensile strength of duralumin 2A11:

370mpa;Tensile strength of 2A12: 390 420MPa; Tensile strength of 2A13: 315 345MPa;Hope it helps.

Tungsten carbide: high hardness (86 93HRA, equivalent to 69 81HRC); Tensile strength of industrial pure aluminum: 80 100MPa; Common aluminum alloys:

Tensile strength of anti-rust aluminum 5A50: 265MPa;Tensile strength of 3A21: <167MPa;Tensile strength of duralumin 2A11:

370mpa;Tensile strength of 2A12: 390 420MPa; Tensile strength of 2A13: 315 345MPa;Hope it helps.