Ultra-high hardness and bending strength
High thermal shock resistance
Electrical insulation
High temperature resistance
Silicon nitride ceramic dowel pins withstand harsh projection welding conditions with high efficiency while extending service life.The service life of commonly used ceramic welding pins is 40 times that of metals, and the service life of silicon nitride ceramics is 5 times longer than that of zirconia positioning pins.It also achieves high precision and accuracy during long projection welding and can withstand temperatures of 1000°C.
(Items) | (Unit) | （Si₃N₄） | （ZrO₂） | （AI₂O₃） |
/ | / | Gas Pressure Sintering | Yttria stabilized | 99.70% |
Young's Modulus of Elasticity | Mpa | 300-320 | 210 | 380 |
Density | Mg/m³ | 3.24 | 6.04 | 3.95 |
Compression strength | Mpa | 3000 | 2200 | 2500 |
Flexural Strength | Mpa | 850 | >1000 | 300-400 |
Vickers hardness | HV | 1650 | 1240 | 16000 |
Fracture Toughness | MPa·m½ | 6-7 | 8-10 | 3-4 |
Coefficient of Thermal Expansion | 10-⁶/℃ | 3.3 | 10.3 | 8.4 |
Thermal Conductivity | W/mk | 21 | 3 | 28 |
Max Working Temperature | ℃ | 1300-1600 | 1000 | 1300-1500 |
Volume Resistivity | Ω·cm | 1014 | / | 1014 |
Average toughness Ra | μm | 0.05 | 0.10 | 0.10 |
Thermal shock resistance | ℃ | Ca.700 | Ca.300 | Ca.150 |
Stress Cycle | time | 107-109 | 105 | / |
Features：
The silicon nitride ceramic dowel pins are sintered at 100 bar atmospheric pressure and are a material of high strength and excellent properties.
First choice for welding:
-Ultra-high hardness and bending strength
-High thermal shock resistance
-Electrical insulation
-High temperature resistance
-High tensile and compressive strength
-Less cold welding
-No welding spatter adhesion
Application：
In the automobile manufacturing industry, the positioning accuracy of the locating pins of the welding fixture plays a vital role in the welding dimensions of the car body.
M4-M5-M6-M8-M12--M14 (round head \ pointed head)
Silicon nitride ceramic dowel pins specifications and models | ||||
Serial number | model | Bottom diameter | high | Remark |
1 | M4 round head | Ø12mm | 28mm | No punch hole |
2 | M5 round head | 26.5mm | ||
3 | M6 round head | 25.9mm | ||
4 | M8 round head | 25.75mm | ||
5 | M10 round head | Ø16mm | 28.8mm | |
6 | M12 round head | 31.1mm | ||
7 | 7/16 round head | 30.65mm | ||
8 | M4 pointed | Ø12mm | 29mm | |
9 | M5 pointed | 30mm | ||
10 | M6 pointed | 31.5mm | ||
11 | M8 pointed | 31.5mm | ||
12 | M10 pointed | Ø16mm | 34.5mm | |
13 | M12 pointed | 35.8mm | ||
14 | M6 internal thread hole | Ø7mm | 19.991mm | Punching with thread and positioning groove |
15 | M8 internal thread hole | Ø8.9mm | 22.95mm | |
16 | M10 internal thread hole | Ø10.9mm | 26.6mm | |
Support personalized customization.
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