Place of Origin: Guangdong, China
Material Introduction:
Made from high-strength silicon nitride ceramic materials (Si3N4), this ceramic locating pin provides excellent mechanical strength, electrical insulation, thermal shock resistance, and wear resistance. It is designed for welding fixtures, resistance welding systems, and automated positioning applications where metal pins may cause shorting, wear, or weld spatter adhesion.
Applications:
Projection welding fixtures
Resistance welding systems
Automotive body-in-white welding lines
Nut and bolt welding positioning
Robotic welding cells
Automated assembly and positioning equipment
EV battery pack welding fixtures
High-temperature insulated locating and guiding applications for automation ceramic components
Lead Time:
Lead time depends on part structure, tolerance requirements, material grade, quantity, and inspection standards. For custom silicon nitride ceramic locating pins, please send drawings, samples, or application details for evaluation before quotation.
Silicon nitride ceramic locating pins are used in welding fixtures, projection welding systems, and automated positioning equipment to locate nuts, bolts, and metal parts during production. Made from Si3N4 ceramic, these pins help reduce electrical shorting, weld spatter adhesion, and wear problems that often occur with metal locating pins in demanding welding environments.
This locating pin is made from silicon nitride ceramic materials, a technical ceramic known for its strength, toughness, low thermal expansion, electrical insulation, and thermal shock resistance. These properties make Si3N4 suitable for parts that need to work repeatedly under heat, pressure, and electrical welding conditions.
Compared with alumina ceramic, silicon nitride offers better toughness and impact resistance. Compared with zirconia ceramic, it has better thermal shock resistance and lower thermal expansion. For welding fixture parts that need stable positioning and longer service life, silicon nitride is often a better material choice.
Silicon nitride ceramic locating pins are mainly used in applications where insulation, wear resistance, and stable positioning are required. Common applications include:
For similar custom parts used in industrial equipment, CERAMPRO also manufactures precision ceramic components based on customer drawings, samples, and working conditions.
Metal locating pins may wear quickly, conduct electricity, or become affected by weld spatter in projection welding fixtures. Silicon nitride ceramic locating pins provide a practical alternative when the fixture requires insulation, longer service life, and more stable positioning.
CERAMPRO can customize the outer diameter, length, ball head, flange, step structure, holes, tolerance, and surface finish according to your drawings. We support prototype testing, small-batch production, and custom manufacturing for welding fixture suppliers, automation equipment builders, and industrial OEM projects.
The values below are typical reference data for silicon nitride ceramic. Final specifications depend on the material grade, drawing requirements, forming process, sintering method, tolerance, and inspection standard.
| Item | Typical Reference Value |
|---|---|
| Material | Silicon Nitride Ceramic / Si3N4 |
| Color | Black or dark gray |
| Density | Approx. 3.20–3.30 g/cm³ |
| Hardness | Approx. HV 1400–1700 |
| Flexural Strength | Approx. 700–1000 MPa |
| Thermal Expansion | Approx. 2.8–3.4 × 10⁻⁶ /K |
| Electrical Insulation | Good insulating performance |
| Custom Options | Diameter, length, head shape, flange, step, hole structure, tolerance, and surface finish |
| Comparison | Metal Locating Pin | Silicon Nitride Ceramic Locating Pin |
|---|---|---|
| Electrical Insulation | Poor | Good |
| Weld Spatter Adhesion | Easy to stick | Lower adhesion |
| Wear Resistance | Medium | High |
| Thermal Shock Resistance | Medium | High |
| Dimensional Stability | Affected by heat and wear | More stable under repeated working cycles |
| Recommended Use | General positioning | Insulated positioning in welding fixtures and automation equipment |
It is used to position nuts, bolts, and metal parts in projection welding fixtures, resistance welding systems, robotic welding cells, and automated assembly equipment.
Silicon nitride provides electrical insulation, good wear resistance, thermal shock resistance, and lower weld spatter adhesion. This helps reduce shorting, sticking, and fixture wear in welding applications.
Yes. It is suitable for nut and bolt projection welding fixtures, especially where insulation and weld spatter resistance are required.
Yes. We can customize the diameter, length, ball head, flange, step structure, holes, tolerance, and surface finish according to your drawing or sample.
Please provide drawings, dimensions, tolerance requirements, quantity, working environment, and application details. If drawings are not available, clear sample photos can help us make an initial evaluation.
Silicon nitride is still a ceramic material, so it should be used with proper design and installation. However, it has much better toughness and impact resistance than many traditional ceramics.
Yes. Silicon nitride has good thermal shock resistance and dimensional stability, but the final design should be checked according to the actual temperature, load, and working cycle.
Yes. We can support prototype samples and small-batch testing before mass production, depending on the part structure and material requirements.
Common industries include automotive welding, EV battery assembly, robotic welding, resistance welding, automated assembly, and precision industrial equipment manufacturing.
Alumina is suitable for cost-sensitive insulation applications, zirconia offers high toughness, and silicon nitride provides a good balance of toughness, thermal shock resistance, insulation, and wear resistance. For demanding welding fixtures, silicon nitride is usually the preferred option.
