Description:
1.excellent hardness2.excellent Surface Finish
3.excellent Corrosion Resistance
4.ceramic capstans
5.wear resistance
Product Description In order to meet the needs ofhigh quality and productivity of metal wire drawing machinesproduction, our company has successfully developed the ZrO2 ceramicwire drawing capstans with the strong technical supports from therelative university and research institutes.The ZrO2 ceramics is atype of new hi-tech with the following advantages which compared with traditional AI2O2 ceramics.
1High strength and fracture toughness
2High hardness and wear resistance
3its coefficient of thermal expansion almost attain the commonmetal
4Low thermal conductivity Featured with high strength andfracture toughness, ZrO2 ceramics has been well known as theceramics steel.Its fracture toughness is the highest among alltypes of ceramics and its machining performances are excellent.withthe perfection OF ZrO2v formula and those features guarantee theiruncomparable wear-resistance with the traditionalceramics.after machining, the fine grain ceramics can gain very lowsurface roughness(<0.1UM), thus improve the quality of thefinished wire rods.The fine grain ZrO2 ceramics is capable ofself-lubrication and better polish can be expected afterservice.The modulus of elasticity and the coefficient of thermalexpansion of the ZrO2 ceramics are similar to those of the steel,making it available to form a compound wire rod drawing wheel withits steel parts.And the damages or cracks can be avoided because oftheir balanced thrmal expansion Practical use prove that the ZrO2ceramic wire drawing capstans are the perfect spare parts formodern high speed wire drawing machines.
| Product Parameters | |||
| Value (at 20°C) | |||
| Features | Unit | Pharma-A | Pharma-Z |
| Melting point | °C | >2050 | >2680 |
| Porosity | %Volume | 0 | 0 |
| Density | g.cm-3 | >3.9 | >5.95 |
| Grain size | μm | ≤3 | ≤0.5 |
| Coefficient of linear expansion (20-1000°C) | 10-6/°C | 8 | 10 |
| Thermal conductivity | W/m°C | 35 | 2.93 |
| Vickers hardness | Gpa | 18 | 13 |
| Bending strength | Mpa | 400 | 900 |
| Youngs modulus | Gpa | 390 | 205 |
| Breaking tenacity | Mpa.m1/2 | 3.5-4 | 8.0-10 |
| Electrical resistivity | Ω.cm | >1014 | >1010 |
