Silicon Nitride Welding Ceramic Positioning Pin
Product Overview
Silicon nitride ceramics have high strength, especially high-purity
silicon nitride, which is one of the hardest substances in the
world.
Very strong corrosion resistance, can be used in strong acids and
alkalis, soluble in hydrofluoric acid but does not react with other
organic acids
Performance:
Uses of shaped ceramic positioning pins: automobiles, clutches,
engines, universal joints, axles, motorcycles, crankshafts,
connecting rods, loaders, excavators, power tools, pneumatic tools,
construction machinery, etc.
Classification of special-shaped ceramic positioning pins: fixed
positioning pins, replaceable positioning pins, tapered positioning
pins, trimmed positioning pins, standard diamond shaped positioning
pins.
Ceramic positioning pin material: zirconia and alumina, silicon
nitride ceramic material.
We can customize various types of non-standard special-shaped
ceramic positioning pins and special-purpose special-shaped ceramic
positioning pins according to customers' use environment, use
requirements and required material properties.
Product parameter table
Material
Project | Alumina AL203 | Silicon carbide sic | Silicon nitride sin | Silicon nitride sin |
| Color | Ivory | black | black | Milky white, gray black |
| Content(%) | 99.5 | …… | …… | …… |
| Main features | - Excellent high frequency electrical insulation
Good wear resistance preservative Strong High hardness
| - Good high temperature strength
- High thermal conductivity
- Strong alkali resistance
- Wear-resistant
- Lightweight
| - Good high temperature strength
- Strong impact resistance
- Strong corrosion resistance
- Lightweight
| - High strength and high impact resistance
- Good self-lubricating
- Strong alkali resistance
- Smooth surface
- Good toughness
|
| The main purpose | - Wear parts
- High temperature parts
- Corrosion resistant parts
| - Machinery Seal
- Sliding parts
- High temperature parts
| - Molten metal parts
- Metal plasticity
- Processed parts
| - Industrial knives
- Pump parts
- Wear parts
|
| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 |
Mechanical behavior
| Vickers hardness | Gpa | 16.0 | 23.0 | 14.0 | 13.2 | 12.7 |
| Flexural strength | Mpa | 360 | 450 | 1020 | 1000 | 1470 |
| Compressive strength | Mpa | 2350 | …… | …… | …… | …… |
| Fracture toughness | Mpa | 4 | 2-3 | 7 | 4-5 | 4-5 |
Thermal performance
| Linear expansion coefficient | 40-400℃ | ×10-5/℃ | 7.2 | 3.7 | 2.8 | 10.5 | 10.8 |
| 40-800℃ | 8.0 | 4.4 | 3.3 | 11.0 | 11.3 |
| Thermal conductivity | W/(m·k) | 32 | 200 | 27 | 3 | 3 |
| Specific heat | J/(kg·k) | 0.78*10 | 0.67*10 | 0.65*10 | 0.46*10 | 0.46*10 |
| Thermal shock resistance (in water) | ℃ | 250 | …… | ＞800 | 300 | 350 |
| Electrical performance | Dielectric strength | V/m | 15*105 | …… | 13*105 | 11*105 | …… |
| Volume resistance(20℃) | Ω·cm | ＞1014 | 108 | 1014 | 1013 | …… |
| Dielectric constant | …… | 9.6 | …… | 9.9 | 33 | …… |
| Loss factor | ×10-4 | 10 | …… | …… | 520 | …… |
Product features
- High hardness: the hardness of zirconia is second only to diamond
- High wear resistance: High hardness and good red hardness determine
that the zirconia positioning pin has excellent wear resistance
- High cost performance: the service life of zirconia positioning
pins is several times that of ordinary positioning pins
Applications
Ceramic positioning pins can be applied to accessories for special
purpose parts of high temperature resistance, corrosion resistance,
wear resistance, and high voltage resistance used in industries
such as electronics, machinery, chemical industry, metallurgy,
textiles, and power.
After the positioning pin is worn, it will produce a blocking
effect when loading and unloading, causing the positioning hole of
the part to be hooked. In order to ensure the accuracy of the
relative position between the two parts after the certificate is
installed, cylindrical pins or tapered pins are often used for
positioning, so the requirements for the pins and pin holes are
high. In order to facilitate the processing of pin holes and pins,
as far as possible, the pin holes are made as through holes as much
as poss
Product Picture
Special-shaped ceramic positioning pins have extremely strong
corrosion resistance, and can also be used in strong acids, strong
alkalis, and seawater. At 1100 ℃, the strength and hardness are
almost unchanged. Can also be used in non-magnetic and magnetic
fields.
Product packaging
Packed in carton
FAQ
1. Are you a businessman or a manufacturer?
We are a company, we have our own factory
2. How long is your delivery time?
Negotiable
3. Can the product be customized?
Can be customized
4. What is the product packaging?
Carton or according to customer requirements
