Yixing Weite Chinaware Co., Ltd
Weite Ceramics Co., Ltd
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Silicon Nitride Welding Ceramic Positioning Pin
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.
| Material Project | Alumina AL203 | Silicon carbide sic | Silicon nitride sin | Silicon nitride sin | ||||
| Color | Ivory | black | black | Milky white, gray black | ||||
| Content(%) | 99.5 | …… | …… | …… | ||||
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| Density | Kg/m³ | 3.9*10 | 3.16*10 | 3.3*10 | 6.0*10 | |||
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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 | ||
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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 | …… | ||
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
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.
Packed in carton
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