- EN
The chemical formula of silicon nitride ceramics is Si3N4, which belongs to structural ceramic materials. It has the characteristics of high hardness and high temperature resistance. Among ceramic materials, it has excellent comprehensive mechanical properties, thermal shock resistance, oxidation resistance, wear resistance and corrosion resistance. It is used in the machinery industry as pistons, plungers, rollers, knives, pump columns, mandrels, sealing materials, etc. Silicon nitride ceramic materials can meet the Vickers hardness of about HV2300, which is equivalent to Rockwell hardness HRA96-97. Compared with the hardness of conventional tungsten steel materials HRA86-93, silicon nitride ceramic materials have higher hardness, and the difficulty factor of precision dimension processing is greater.
Its dimensions are:
1. Silicon nitride ceramic 7MPa piston rod: φ26*φ14*M4-6*φ5*φ3.569*55,
2. Tungsten steel 7MPa piston cylinder: φ22*φ3.559*30,
3. Silicon nitride ceramic 700MPa piston rod: φ26*φ14*φ11.285*M4-6*φ5*55,
4. Tungsten steel 700KPa piston cylinder: φ22*φ11.275*30,
5. Silicon nitride ceramic 170MPa piston rod: φ25.231*φ14*M4-6*φ5*58,
6. Tungsten steel 170MPa piston cylinder: φ42*φ25.221*35,
7. Tungsten steel 500MPa piston rod: φ7*φ5.04*φ5*φ1.596*92,
8. Tungsten steel 500MPa piston cylinder: φ22*φ1.596*40,
9. Silicon nitride negative pressure piston rod: φ11.283*φ7*φ5*φ2*45,
10. Tungsten steel negative pressure piston cylinder: φ22*M20*1.5-6*φ11.273*30,
11. Silicon nitride piston rod: φ53*φ40*φ32*φ16*φ12*φ11.283*M8*φ6*82,
12. Tungsten steel piston cylinder: φ22*φ11.273*30.
The tolerance requirements of this series of silicon nitride piston rods meet the requirements of roundness 0.001, straightness 0.002, coaxiality 0.025, perpendicularity 0.025, and dimensional tolerance ±0.002. .02.
