HIP Silicon Nitride (Si3N4) Ball
Silicon nitride is a hard ceramic having high strength over a broad temperature range, moderatethermal conductivity, low coefficient of thermal expansion,moderately high elastic modulus, and unusually high fracture toughness for a ceramic. This combination of properties leads to excellentthermal shock resistance, ability to withstand high structural loads to high temperature, and superior wear resistance.
Sinoma Si3N4 Ball
φ 1mm to 12.7mm
Application: machine tool spindles, dental drills, electric motors, bicycles, ball screws, pumps
Hot isostatic pressing (HIP) is a manufacturing process, used to reduce the porosity of metals and increase the density of many ceramic materials. This improves the material's mechanical properties and workability.
The HIP process subjects a component to both elevated temperature and isostatic gas pressure in a high pressure containment vessel. The pressurizing gas most widely used is argon. An inert gas is used, so that the material does not chemically react. The chamber is heated, causing the pressure inside the vessel to increase. Many systems use associated gas pumping to achieve the necessary pressure level. Pressure is applied to the material from all directions (hence the term "isostatic").
Sinoma HIP balls have the following advantages:
1. Higher densification. Surface or interior defects, especially the porosity can be eradicated to achieve better sealing effect.
2. Higher toughness. Ceramic material has a feature of brittleness. When shocked fiercely, the higher the toughness is, the less cracks and defects will occur. Higher toughness can avoid destructive failure.
3. Higher compressive strength.