KWOM Series Ceramic Liners
15/07/2016

Ceramic liner is composed of bearing metal sheath and ceramic liner with high wear-resistance, and the integrated cylinder liner is mechanically processed and assembled.

Product features:
 
I. Excellent abrasion resistance: There are various sharp particles as lithic quartz sand, iron ore, iron etc., in the high pressure mud during drilling. These particles have high hardness and good abrasion resistance features that will cause grinding and erosion on cylinder surface. Therefore, Cylinder liner materials have higher requirements on abrasion resistance. Compared with the traditional double metal cylinder liner, the life of the ceramic cylinder liner manufactured by the company is improved by more than 10 times and the service life of it is up to 4000-10000 hours.

II. Good surface quality: The surface quality of the ceramic material has a great influence on the service life. The KWOM series ceramic liner prepared by the company has a uniform microstructure and has good smoothness and gloss after being processed many times. Compared with the single phase alumina ceramics, the toughness is improved greatly and abrasion resistance and service life are also improved obviously due to good surface quality and reduction of water for lubrication.

III. Superior comprehensive mechanical properties: KWOM series ceramic cylinder manufactured by the company has features of excellent corrosion resistance, high temperature resistance and abrasion resistance of the ceramic materials and the properties of material strength, hardness, toughness and thermal shock resistance are greatly enhanced based on the phase transformation toughening technology so that it has superior mechanical properties to be suitable for the work in the drilling mud or other corrosive conditions. For example, it could be applied to some areas as hazard drilling environment as deep petroleum storage and geological structure and offshore oil, gas and shale gas exploration.

IV. Lower cost: Compared with the traditional double metal cylinder liner and single phase alumina cylinder, the repair costs, labor costs, the cost of storage and the transportation cost could be reduced and the work efficiency could be improved due to improvement of the comprehensive properties by using the ceramic cylinder liner manufactured by the company.
 

Item	KWOM-ZTA Series	KWOM-TZP Series
Composition	Aluminum oxide, zirconium oxide, yttrium oxide	Zirconium oxide, yttrium oxide
Volume density（g/cm³）	≥4.25	≥6.00
Bending strength(MPa)	≥560	≥800
Fracture toughness（MPa.M1/2）	≥5.83	≥10.00
Rockwell hardness(HRA)	≥91	≥89
Work surface roughness（μm）	≤0.26	≤0.20
Compressive strength（MPa)	≥3000	≥3000
Wear resistance（cm3）	0.28	0.20
Thermal shock resistance	≥450℃	≥450℃

Purchasing Cost
	Continuous  working time	Service life of a liner	Purchasing cost of a linear	Required quantity	Total cost	Cost per hour
Double-metal liners	4000 h	500 h	1200 RMB	8	9600 RMB	2.40 RMB
Ceramic liners	4000 h	≥4000 h	5180 RMB	1	5180 RMB	1.30 RMB

Maintenance Costs
	Continuous  working time	Service life of a liner	Replacing times	Replacing cost	Total Cost	Cost per hour
Double-metal liners	4000 h	500 h	8	2000 RMB	16000 RMB	4.00 RMB
Ceramic liners	4000 h	≥4000 h	1	2000 RMB	2000 RMB	0.5 RMB

Brand of mud pump	Types of ceramic cylinder liner
BOMCO	F-350/500	F-800/1000	F-1300/1600	F-1600HL	F-2200HL
EMSCO	FB-1000	FB-1300/1600	F-350/500	F-650	F-800/1000
	F-1300	F-1600	DB-550	D-300	D-700
GARNDER-DENVER	PZ-7	PZ-8/9	PZ-10/11	PZ-L	PA-8
	FY-FXD	FO-FXO	FD-FXX	FG-GXG
NATIONAL	7-P-50	8-P-80	9/10-P-100	12-P-160	14-P-220
OILWELL	A-600-PT	A-850-PT	A-1100-PT	A-1400-PT	A-1700-PT
IDECO	T-500	T-800	T-1000	T-1300	T-1600