ceramic liners

CeramicLiners / Cylinders:Usedas oneimportant part for petroleum triplex mud pump. Ceramic Liners have better performance than metal liners in wear-proof, corrosion resistant and service life. Ceramic liners have reduced the drilling cost and improved the labour intensity in locale .So ceramic liners are the frist choice of upgrade high-voltage mud pump liners. The material of ceramic liner is the most advanced international increased flexible zirconium. The flexiable technical number isK10--15MPa (10 timesof traditional ceramic) number of resist- bending strengh is σ600--800Mpa Weber number is m18. Thespecification size is Φ150 (mix)180(max) X 310(mix)440(max)mm. Liners are the main damageable parts in mud pumps for development drilling. The ceramicliner (zirconium and other compound materials) has the features of long service lifetime, wear-resistance and erosion-resistance. Its average life time is more5 times longer than the metal cylinder. Honestly, its own weak point is that there could be some fracture when the ceramic cylinder is impacted violently by other object. To guarantee the safe operation of the components and avoid breaking the ceramic liners, the following safety guidelines should be noted before installation: 1 When installing the cylinder, it is better to use the special tool or follow the instruction below;2 Strictly prohibit flinging knocking or impacting the cylinder, if you need to put down, you should move it as slowly and careful as you can;3 Strictly prohibit hitting ceramic cylinder with hammer or other heavy objects (including the metal shuck of the cylinder). When hitting, wood or other materials should be used as buffer cushion;4 When you use hammer or other heavy objects to hit or strike the cylinder (especially for pressure cap, piston crown, piston rod), you should control the appreciated angle and force. Otherwise, the impact force which has been transferred to the cylinder will possible fracture the ceramic liner of cylinder;5 Before the installation of piston, you should check whether there is any damage on the metal shuck of piston crown. There should be at least 0.20mm installation clearance between the maximum outer diameter of the piston and inner diameter of ceramic liner, otherwise, ceramic liner could possible be damaged;6 After the installation, the side-friction between the metal part of piston and ceramic wall of the cylinder should be avoided. If it does happen, you should rectify as quickly as you can;7 If the cylinder is ceased to use for a long time (time length should be decided by the local freezing speed) under 0 centi degree in the winter, the mud in the ceramic liner should be let out in order to prevent the freezing and swelled mud press ceramic liner of the cylinder.