API ceramic mud pump liner for drilling rig mud pump
Ceramic Liners features:
1. Corrosion-resistant, acid-proof alkali, heat-resistant, it can
work in the medium of the drilling mud or other corrosive liquid
2. High hardness, wear resistance, it can resist high pressure mud
of sharp or abrasive resistance of the solid particles grinding or
scour, such as rock debris,quartz sands,iron ores,scrap iron.
3. Evenly distributed structure for microstructure and smoothly
surface will improve the life of the piston.
4. Working pressure is high, more than 52 MPa (7500 PSI), to meet
drilling deep well, ultra-deep demand. Its maximum and minimum
service life can reach more than 4000 and 2000 hours respectively.
Ceramic liners material and performance index:
Ceramic liner take zirconia composite formulations as the formula.
The composition of zirconia: 5.4% yttria and 94.6% zirconia, the
average particle size less than 0.5 μm. Massive experiments show that the toughness is maximum when 80
--90% zirconia is added.
|Average grain (μm)||≤ 7||≤ 3|
|Rockwell hardness (HRA)||≥ 89.5||≥ 91|
|Bending strength (MPa)||≥ 350||≥ 800|
|Water absorbability (%)||≤ 0.05||≤ 0.01|
|Fracture toughness (MPa.M1/2)||≥ 4||≥ 9|
|Volume density (g/cm3)||≥ 3.85||≥ 5.6|
|Toughness of working surface||≥ 0.40 μm when temp ≤ 350℃||≤ 0.25μm when temp ≤ 350℃|
|20 times more than that of high chromium cast iron||50 times more than that of high chromium cast iron|
|Compression strength (MPa)||≥ 3000||≥ 5000|
|Thermal shock resistance (temperature crack)||≥ 350℃||≥ 350℃|