Silicon Nitride Pins With High Strength , Wear rResistance , Corrosion Resistance Of Molten Metal
1 . Descriptions:
High-performance silicon nitride positioning pin products are superior to others by virtue of their high hardness, high thermal shock resistance, electrical insulation, and good mechanical creep resistance at high temperatures. Material. In the automobile manufacturing industry, the positioning accuracy of the positioning pin of the welding fixture plays a crucial role in the welding size of the body, and the looseness and excessive wear of the positioning pin are two important reasons for its positioning failure.
2 . Silicon Nitride Welding Pin Advantages
In the automobile manufacturing industry, the positioning accuracy of the positioning pin of the welding fixture plays a crucial role in the welding size of the body, and the looseness and excessive wear of the positioning pin are two important reasons for its positioning failure.
1. Silicon nitride is an insulating material, no need for slag discharge inspection after welding, and will not damage the thread, which can improve production efficiency and significantly improve welding quality.
2. Silicon nitride has high hardness, very good wear resistance, and its life is 5 to 10 times that of positioning pins of other materials. It can reduce the processing steps, improve the service life, and save the cost very significantly.
3. It can be matched with locating pins of all external dimensions, and the replacement process is no problem, and the comprehensive cost-effectiveness is high.
3 . Main properties of silicon nitride ceramic
High mechanical strength remains up to 1200℃
High fracture toughness
Extremely high hardness
Outstanding wear resistance and good self-lubricating property
Low thermal expansion
Excellent thermal shock resistance which can withstand sudden temperature change
Good resistance to acid&alkali and oxidation
