Publish Time: 2024-08-09 Origin: Site
The production of tungsten carbide balls involves mixing tungsten powder and carbon powder in specific ratios that determine the nature and properties of the final product. Generally speaking, the standard chemical composition of tungsten carbide is about 93% tungsten and 7% carbon in order to ensure the strength and hardness of the product.
In actual production, this ratio may be fine-tuned and other metal powders may be added for production in order to ensure the quality and performance of the final product. The exact ratio may be adjusted depending on the quality of the raw material, the sintering conditions and the target properties. The actual proportioning of the powders may vary in order to obtain optimum sintering results. For example, tungsten carbide balls of grade YN6 with a ratio of 6% CO, 92% WC + 2% Ni have superior corrosion resistance and are a good alternative to steel balls.
Put the prepared raw materials with specific ratios into the ball mill for mixing, you can use steel balls in the ball mill for long time grinding. The mixed powder is placed in a mold and pressed into a spherical shape using high pressure. This step is carried out in a cold press at a very high pressure to ensure that the powder is pressed uniformly into a spherical shape. The pressed spherical powder is sintered in a sintering furnace.
The sintered tungsten carbide balls need to be cooled slowly. During the cooling process, the balls may have some surface burrs, which need to be machined to remove these burrs and obtain a uniform surface. After the cooling and deburring process, the tungsten carbide balls need to be finish machined. This includes grinding and polishing to ensure that the balls have a smooth, uniform surface and achieve the desired appearance and dimensional accuracy.