Dezhou Boru Petropelum Machinery Manufacturing Co.,LTD Company Logo Dezhou Boru Petropelum Machinery Manufacturing Co.,LTD
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Mud Pump Spare Parts Cylinder Liner

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Dezhou Boru Petropelum Machinery Manufacturing Co.,LTD
[China]

Address
No.276 Lakeside North Road Dezhou 山东
Phone
86-0534-2666200
Contact name
luoyanmin

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  • Place of Origin: China
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Description

Mud pump is the "heart" of oilfield drilling system, and the cylinder liner of mud pump is an important and easily worn part of the hydraulic end of the mud pump, so the life of the cylinder liner of mud pump directly affects the life of the mud pump.Cylinder liner working surface due to contact with high temperature, high pressure gas, piston ring on its surface for high-speed reciprocating movement, which determines that the cylinder liner not only to have enough strength and rigidity, but also must be resistant to high temperature, corrosion, wear.

Product classification: common types of mud pump cylinder liner: single metal cylinder liner, bimetal cylinder liner,,ceramic cylinder liner.Product introduction:1. Single metal cylinder liner: the single metal cylinder liner is divided into high-frequency carburizing and chrome plating.Single metal cylinder liner is carburized and high-frequency treatment, the hardness can reach hrc58-62, with high smoothness, wear resistance, corrosion resistance, long service life characteristics, suitable for the use of mild corrosive mud.2. Bimetal cylinder liner: bimetal cylinder liner is one of the most widely used and most widely used parts for hydraulic end of mud pump.Bimetallic liner is a combination of hot forging high wear coat and the advantages of high chrome wear-resisting corrosion inner sleeve coat is made of quality carbon steel hot-pressing time forming, sets of high chromium cast iron in centrifugal casting, the tensile strength of the coat has a higher than 900000 psi, inner sleeve after heat treatment, hardness greater than HRC62 can bear the mud pressure of 7000 psi, its surface smooth as a mirror, the inner hole size tolerance strictly, the normal service life of up to 800 hours.3. Ceramic cylinder liner: with the continuous expansion of human's exploration of global oil and gas resources, A large number of metal cylinder liners are frequently replaced, which cannot meet the high pressure and wear requirements of drilling RIGS. Ceramic cylinder liner is made of zirconia, zirconia toughened alumina (ZTA) and high-performance a-99 alumina ceramic.Its raw materials are made of high-purity nano-zirconia and alumina powder, which is shaped once by advanced cold pressing technology, sintered at high temperature, assembled and finally polished by high-precision grinding. It has high flexural and tensile strength, high fracture toughness and acid and alkali corrosion resistance, with good performance and a service life of more than 4000 hours.It is suitable for the drilling environment with deep oil reservoir and bad geological structure as well as the development of offshore oil and natural gas.Mud pump cylinder liner processing technology:The cylinder liner of mud pump, as a kind of vulnerable accessories of oil drilling mud pump, is usually required to meet the following three conditions in processing:The first: the first thing to understand is that the mud pump cylinder liner belongs to the thin-wall parts, which due to the rigidity of the thin-wall workpiece is poor, in the turning process by cutting force and clamping force action is easy to produce deformation, affect the workpiece size accuracy and shape accuracy.Therefore, reasonable selection of clamping method, cutter geometry Angle, cutting parameters and sufficient cooling and lubrication are the key to ensure the precision of thin wall parts.Second: it should be noted that the parts of the inner circle and the outer circle precision requirements higher, processing should be coarse, fine separate.Third: in addition, we also need to pay special attention to the mud pump cylinder liner in the final use, is the cylinder liner into the cylinder block, should be re-processed on the inner diameter size.Heat treatment:Normalizing (removal of internal stress, increase hardness) 800 ℃ heat 4-5 h air cooling;Annealing (softening) 980 ℃ burn 5-6 h with furnace cooling;Quenching (improved hardness) 980 ℃ heat preservation 30 min air cooling;Tempering (increase material toughness) 200 ℃ heat preservation for 60 min;Burning hot charging: 450 ℃ to 500 ℃ for 5 or 6 h, 100% full inspection, pressure test after 24 h of cooling.How to prevent quenching deformation during the processing of mud pump cylinder liner:Oil drilling mud pump in the work, cylinder liner due to high-speed flow mud in the sand wear and corrosion of corrosive medium, easy to appear strain, groove, peeling, leakage, cylinder and broken "and other failure phenomenon.In order to improve the wear resistance and corrosion resistance of the cylinder liner, Cr26 high-chromium cast iron material is used to shape the blank, which is annealed, machined, quenched and tempered at low temperature, and its hardness is required to be greater than HRC62.However, due to the thin cylinder liner wall (6=5.5mill, 7illm), 100% of the cylinder liner is deformed to different degrees in the heat treatment, which cannot meet the assembly requirements. Additional shaping procedures must be added, which not only increases the process cost, but also leads to cracking and scrapping of part of the cylinder liner due to excessive shaping.The following method can be used to prevent the mud pump cylinder liner quenching deformation.First: oil slurry pump cylinder liner to prevent the quenching deformation, should try to adopt low temperature (980 ℃), the slower cooling rate (air cooling), when the required hardness HRC > 60, Cr26 high chrome cast iron materials meet the above process of CrC 8.9 ~ 9.6.Second: to prevent the basket structure, shape, heat radiation conditions on the workpiece, the workpiece should be removed from the basket as soon as possible, spread air cooling, but to avoid high temperature clamping caused by deformation, so to control the workpiece removed from the basket temperature range.Due to the repeated heating and cooling of the basket, the support beam welded on the bottom plate of the basket will be deformed. Therefore, the flatness of the edge of the support beam should be regularly tested and the tolerance should be kept within the allowable range through technological treatment.Points to note when purchasing:In the purchase of mud pump cylinder liner, should first check the standard size of the standard cylinder liner and figure number, installed with the cylinder liner must be the same as the size of the standard cylinder liner grouping code, only in this way to ensure that there is a standard fit gap.Precautions should be taken during installation and use:1. It is strictly prohibited to throw, beat or impact the cylinder liner of the mud pump. If it is necessary to put down the cylinder liner, the operation shall be carried out slowly.2. The metal part of the piston of the mud pump and the inner wall of the cylinder liner of the mud pump shall be protected from eccentric wear during installation. If there is eccentric wear, it shall be corrected as soon as possible.3. It is strictly prohibited to directly hit the cylinder liner with a hammer or other heavy objects. Wood and other materials must be put on the cylinder liner for tapping to play a buffering role.4, equipment under 0 ℃ in winter when stopped for a long time, should put off inhaling indoor mud, prevent mud crack freezing up mud pump cylinder liner.Mud pump delivery package1.Clean tubes by washing.2.Warped with bubble plastic paper.3.Put in wood box padded with foam board.4.Sealed the box with screws which is easy to be opened.5. Fragile warning stick.Buying Guides In your inquiry, please provide as detailed imformation as you can for our evaluation.Material: If you are not sure what exact material you need, please tell us your requests on material performance and your specific application, according to which we will offer you the most suitable material.Drawing: Please make sure the drawing is clear with all of your technical requests so that we can quote asap.Size / Volume: If you don't have a drawing, please tell us the approx size or volume, we will offer our standard size for your reference.4. Quantity: The last but not the least, don't forget to tell us the quantity you need to get our best offer.Our factory services1.Consistent quality control ;2. Quick delivery time ;3. Excellent customer support ;4. Made-to-order service available;5. various material choices;6. Own designing team for new products development.



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