Silicon nitride locating pins mainly utilize silicon nitride’s high strength, wear resistance, metal melt corrosion resistance (silicon nitride ceramics have a very large contact angle with metal and almost no chemical reaction), and insulation. Silicon nitride locating pins are very suitable for projection welding (spot welding) because if insulated silicon nitride locating pins are not used during welding, unnecessary current will pass through, causing sparks between the pin and the workpiece, causing the pin to wear and unable to be positioned, resulting in a decrease in the quality and pass rate of the workpiece. And because of the generation of sparks, the workpiece often requires additional through-hole processes. At present, the silicon nitride projection welding (spot welding) locating pin has been used in large-scale auto parts factories in batches, and the comprehensive cost performance is 70 times that of steel locating pins.
Other materials as locating pins have the following disadvantages:
1. After welding, the welded nut needs to be re-through-hole. It consumes a lot of manpower.
2. Short life, needs to be replaced frequently, increases labor costs, and reduces production efficiency.
Using silicon nitride as a locating pin has the following advantages:
1. After welding, the nut does not need to be declared, which reduces the process, improves efficiency, and improves welding quality.
2. The service life is 5 to 10 times that of stainless-steel locating pins. Overall, it saves costs. Increased benefits.
Disadvantages: The unit price is 10 to 50 times higher than that of stainless-steel locating pins, and the one-time investment needs to be increased.
After comprehensive comparison, due to the extended life and the elimination of a later process, the cost performance of silicon nitride locating pins will be 1000 times that of stainless steel. Therefore, it is worthwhile to replace stainless steel locating pins with 50 times the price of silicon nitride locating pins. Therefore, it is recommended that you use silicon nitride locating pins. Our company specializes in the production of silicon nitride ceramics, which can fully meet your requirements for locating pins. Please visit https://www.eticeramics.com/ for more information.