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Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Specifications
Brand Name :
Zhongli
Model Number :
SNB-01
Certification :
CE ISO
Place of Origin :
China
MOQ :
1kg
Payment Terms :
L/C,T/T,Western Union
Supply Ability :
50-200 ton/month
Delivery Time :
within 15days
Packaging Details :
barrel
Warranty :
1 year
Model :
Planetary Ball Mill Machine
Material :
Hard, medium-hard, soft, brittle, moist, fibrous
Grinding Jar Volume :
50ml, 100ml, 150ml, 250ml, 500ml, 1000ml
Application :
Grinding and Mixing
Grinding Ball Size :
3mm, 5mm, 10mm, 15mm, 20mm
Type :
Laboratory Equipment
Max Speed :
800 rpm
Weight :
40kg
Timer :
1s-99h59min
Max Sample Load :
2/3 of the volume of the ball mill
Grinding Modes :
Dry grinding, wet grinding, vacuum grinding, low temperature grinding
Power Supply :
220V/110V, 50/60Hz
Dimensions :
500mm x 300mm x 340mm
Description

Product Description

Thermal Shock-Resistant Si3N4 Balls: The Ultimate Solution for Rapid Temperature Changes

In industries where materials are constantly subjected to extreme conditions, the need for components that can withstand rapid temperature changes is paramount. Silicon Nitride (Si3N4) balls, renowned for their thermal shock resistance, are increasingly becoming the material of choice across various sectors.

Understanding Silicon Nitride (Si3N4)

Silicon Nitride (Si3N4) is a high-performance ceramic material known for its exceptional thermal shock resistance, high fracture toughness, and lightweight nature. It is 60% lighter than steel, yet strong enough to endure demanding applications in aerospace, automotive, and electronics industries. The unique properties of Si3N4 make it an ideal alternative to traditional materials like stainless steel and tungsten carbide.

Key Properties of Si3N4 Balls

  • Thermal Shock Resistance: Si3N4 balls can withstand severe thermal shock and thermal gradients, making them suitable for applications like rocket engines and heavy-duty diesel engines.
  • High Fracture Toughness: The interlocking needle-shaped grains formed during sintering provide outstanding contact fatigue resistance and mechanical reliability.
  • Lightweight and Strong: Despite being lighter than steel, Si3N4 balls offer high strength and durability.
  • Chemical Resistance: These balls are highly resistant to corrosion and chemicals, making them ideal for use in harsh environments.

Applications of Thermal Shock-Resistant Si3N4 Balls

The versatility of Si3N4 balls is evident in their wide range of applications. Here are some areas where they excel:

  1. Aerospace and Defense: Used in aircraft and military applications, Si3N4 balls offer high heat resistance and low friction, essential for high-speed and high-impact environments.
  2. Automotive Industry: Si3N4 balls are used in hybrid bearings and electric motor shaft bearings, providing long service life and minimal lubrication needs.
  3. Oil & Gas Sector: Their compatibility with nonferrous metal melts makes them suitable for oil wells and other challenging environments.
  4. Electronics: Silicon nitride substrates, despite lower thermal conductivity compared to aluminum nitride, provide superior mechanical properties for electronic applications.

The Science Behind Thermal Shock Resistance

The thermal shock resistance of Si3N4 balls is attributed to their low thermal expansion coefficient and high elasticity. Research published in the Journal of the European Ceramic Society highlights the role of rare-earth oxide additives in enhancing these properties. The addition of silicon carbide (SiC) nanoparticles further improves the thermal shock resistance, although it may introduce residual stresses that affect performance under certain conditions.

Enhancements with Rare-Earth Oxides

Studies have shown that incorporating rare-earth oxides like La2O3 and Lu2O3 can significantly increase the critical temperature difference Si3N4 can withstand. This enhancement is crucial for applications involving rapid temperature changes, such as energy conversion systems and cutting tools.

Why Choose Si3N4 Balls Over Traditional Materials?

When compared to steel, Si3N4 balls offer numerous advantages:

  • Higher Working Temperature: Si3N4 can operate at temperatures up to 1200°C in inert gas environments, whereas steel is limited to 180°C.
  • Lower Density: With a density of 3.21 g/cm³, Si3N4 is much lighter than steel (7.8 g/cm³), reducing overall weight and improving efficiency.
  • Superior Hardness: The Vickers hardness of Si3N4 is 1500 HV, compared to steel's 750 HV, providing better wear resistance.
  • Non-Magnetic: Si3N4 is non-magnetic, making it suitable for applications where magnetism must be avoided.
Property Silicon Nitride (Si3N4) Steel (440C) Zirconia (ZrO2) Alumina (Al2O3)
Density (g/cm³) 3.2 7.8 6.0 3.9
Hardness (HV) 1,400–1,600 700–900 1,200–1,300 1,500–1,800
Fracture Toughness (MPa·m½) 6–7 15–20 7–10 3–4
Compressive Strength (GPa) 2.5–3.5 2.0–2.5 2.0–2.3 2.0–3.0

Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal ResistantLead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

●Description:

Silicon Nitride Ceramic Ball is the most ideal bearing ball for bearing applications, due to the excellent properties of silicon nitride ceramics, it has many irreplaceable advantages comparing to traditional steel materials, such as: high mechanical strength, low wear loss, good self-lubrication, low density, high corrosion resistance, good electrical insulation etc.

Therefore, Silicon Nitride Balls are mostly used for some harsh working conditions: high speed/super speed bearings, high precision bearings, bearings in vacuum, high/low temperature bearings.

Moreover, Silicon Nitride Ceramic Balls can also used as valve ball or measurement balls in chemical pumps/high temperature pumps/metdering pumps.

●Physical Properties:

Chemical Composition:

Si3N4≥95%

Bulk Density:

3.2±0.05g/cm3

Elastic Modulus:

350GPa

Hardness Vickers:

1870HV

Bending Strength:

780MPa

Fracture Toughness:

7.2MPa·m1/2

Thermal Expansion Coefficient:

3.2 10-6/K

Thermal Conductivity:

25W/(m·K)

● Ball Sizes/Grade :

Size (mm)

Φ0.8-180

Grade

Vdws

SPH

Vdwl

Ra

G3

0.05-0.08

≤0.08

<0.13

0.01

G5

0.08-0.13

≤0.13

<0.25

0.014

G10

0.15-0.25

≤0.25

<0.5

0.02

G16

0.2-0.4

≤0.4

<0.8

<0.025

G20

0.3-0.5

≤0.5

<1

<0.032

G100

0.4-0.7

0.4-0.7

<1.4

<0.0105

Factory equipment

Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

Exhibition & Partner

Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

Case

Ship to South Korea

Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal ResistantLead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

Ship to Spain

Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal ResistantLead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

FAQ

1. What sizes and tolerances are available?

  • Diameter range: 0.5mm to 50mm (custom sizes possible).

  • Sphericity: As low as 0.1µm (Grade 5 for ultra-precision bearings).

  • Surface finish: Ra < 0.02µm (mirror polish for low friction).

2. Are silicon nitride balls FDA-approved for medical use?

Yes! Si3N4 is biocompatible (ISO 6474-1) and used in spinal implants, dental devices, and joint replacements due to its antibacterial properties.

3. How do I choose the right Si3N4 balls for my application?

Consider:

  • Load & speed requirements (dynamic/static stress).

  • Temperature range (Si3N4 excels in high heat).

  • Chemical exposure (resistant to most acids/alkalis).

  • Electrical insulation needs (non-conductive).

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Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

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Product Detail
Brand Name :
Zhongli
Model Number :
SNB-01
Certification :
CE ISO
Place of Origin :
China
MOQ :
1kg
Payment Terms :
L/C,T/T,Western Union
Contact Supplier
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant
Lead Grinding Planetary Ball Mill Media Si3N4 Balls Thermal Resistant

Guangzhou Zoli Technology Co.,Ltd.

Verified Supplier
1 Years
guangzhou
Since 2017
Business Type :
Manufacturer, Exporter, Trading Company
Main Products :
Planetary Ball Mill Machine, Stirred Ball Mill, Roller Ball Mill
Total Annual :
5000000-65000000
Employee Number :
80~110
Certification Level :
Verified Supplier
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