As we know, Mud pump liner is the main wearing part of the mud pump fluid end spares in the oil drilling machinery. It’s life span directly affects the drilling efficiency and drilling quality.

With the continuous expansion of the economy, the application of zirconia ceramic liner has been accepted by many consumer. Someone will ask such a question. What is the difference between Zirconia Ceramic Liner and Bi-metal Liner? Please see the following answer:

● Bi-metal Liner

Bi-metal liner combines the advantages of a forged wear-resistant outer sleeve and a high-chromium wear-resistant and corrosion-resistant inner sleeve. The outer sleeve is free forged, and the high chromium inner sleeve is centrifugally poured and the hardness reaches 62 Rockwell c grade after heat treatment. 45# forging, tensile strength σb>610mpa, yield strength σs>450mpa, elongation δ>17%, hardness hb180-200 (casting jacket hardness hb160-200).It's life time can reach about 800 hours depends on the local working environment.

● Ceramic Liner

Oxygen oxidation zirconium ceramics (raw material: non-metallic minerals)

liner is more toughness than bi-metallic liner, and the life time can reach more than 4000 hours. Zirconia ceramic liner has the advantages of resistance to oxygen

wear and corrosion. The reason for cylinder pulling caused by zirconia ceramic cylinder liner is very complicated, there are design reasons, such as the selection of materials, the determination of the gap size, whether the installation of the device is appropriate, whether the structural arrangement is reasonable, whether the surface roughness is appropriate, whether the arrangement of lubrication and cooling is perfect.

Due to longer service life, Zirconia ceramic liner can reduce the transportation cost, labor cost, storage cost, etc. of drilling work, and can also reduce piston wear. It’s especially suitable for deep oil reservoirs,poor geological structures mining environment, offshore oil and natural gas development.