、 The comparison between zirconia ceramic cylinder liners and metal cylinder liners is mainly reflected in multiple aspects. 1. Material properties Hardness and Wear Resistance: Zirconia ceramic cylinder liners have high hardness (Mohs hardness above 8.5), good wear resistance, low wear, and long service life (about 8-10 times that of bimetallic cylinder liners). The hardness and wear resistance of metal cylinder liners are relatively weak. Strength and toughness: Zirconia ceramic cylinder liner has good comprehensive performance in strength and toughness, and can withstand large stress and impact forces. Metal cylinder liners vary in material and are generally slightly inferior. Thermal stability: Zirconia ceramic cylinder liner has excellent thermal stability, with unchanged mechanical properties and no thermal deformation at high temperatures. Metal cylinder liners are prone to thermal expansion and softening at high temperatures. Corrosion resistance: Zirconia ceramic cylinder liner has strong resistance to acid and alkali corrosion, and has significant advantages in corrosive environments. Most metal cylinder liners are prone to rust and corrosion. 2. Processing accuracy Dimensional accuracy: Zirconia ceramic cylinder liner has high machining accuracy (up to 0.01mm, roughness Ra0.8) and good fitting accuracy. The machining accuracy of metal cylinder liners can also be high, but slightly inferior. Customization: Zirconia ceramic cylinder liner can be customized to meet special requirements for greater convenience. Customizing metal cylinder liners is complex and costly. 3. Cost of use Procurement cost: Zirconia ceramic cylinder liner has a high procurement cost, but it has a long service life and may have an advantage in long-term comprehensive cost. Maintenance cost: Zirconia ceramic cylinder liner is wear-resistant and corrosion-resistant, with low maintenance and replacement frequency and low cost. The maintenance cost of metal cylinder liners is relatively high. 4. Scope of application High temperature and high pressure environment: Zirconia ceramic cylinder liners perform well under certain conditions, while metal cylinder liners are prone to problems and have limited applications. Corrosive medium environment: Zirconia ceramic cylinder liner is an ideal choice in corrosive industries such as chemical engineering, while metal cylinder liners require special anti-corrosion measures. High precision equipment: Zirconia ceramic cylinder liners have high precision and low friction coefficient, which can improve equipment performance. The long-term use of metal cylinder liners is prone to a decrease in accuracy.

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