Liner & Piston Related Parts Catalog for ZJ40 Truck-mounted Drilling Rig (SJ Petro)-2

1

Liner (107.35.110.30)

Alloy cast iron (HT300); nitriding treatment; inner wall hardness HRC ≥ 55

1. Inner wall abrasive wear caused by high-sand-content mud; 2. Scuffing due to insufficient lubrication between piston and liner

1. Control mud solid content ≤ 12% (weight percentage) and install a high-precision desander; 2. Ensure the lubricating oil supply pressure of the liner is ≥ 0.25 MPa (refer to ZJ40 Rig Maintenance Manual Clause 6.4.1)

2

Liner (107.35.110.31)

Alloy cast iron (HT300); chrome plating on inner wall; corrosion-resistant

1. Chrome plating peeling due to thermal shock from rapid temperature changes; 2. Inner wall corrosion caused by acidic mud

1. Avoid sudden injection of low-temperature mud into the high-temperature liner; 2. Regularly test mud pH value (maintain pH 7.5-9.0) and add corrosion inhibitor if necessary

3

Liner (107.35.110.32)

Alloy cast iron (HT300); nitriding treatment; precision honing

1. Inner wall wear caused by long-term reciprocating friction of the piston; 2. Damage caused by foreign hard particles entering the cylinder

1. Replace the liner when the inner wall wear exceeds 0.3 mm; 2. Strengthen the maintenance of the mud suction filter to prevent hard particles from entering

4

Liner (107.35.110.33)

Alloy cast iron (HT300); chrome plating on inner wall; high-pressure resistant

1. Cylinder deformation caused by uneven clamping force during installation; 2. Chrome plating wear due to excessive piston clearance

1. Use a torque wrench to tighten the liner fixing bolts evenly (torque: 450-500 N·m); 2. Control the piston-liner clearance within 0.15-0.25 mm

5

Liner (107.35.110.34)

Alloy cast iron (HT300); nitriding treatment; wear-resistant

1. Inner wall fatigue cracking due to long-term high-pressure pulsation; 2. Corrosion caused by mud additive residues

1. Avoid long-term operation of the pump at pressure exceeding 32 MPa; 2. Clean the liner inner wall regularly to remove additive residues

6

Liner (107.35.110.35)

Alloy cast iron (HT300); chrome plating on inner wall; low friction coefficient

1. Chrome plating corrosion caused by saltwater mud (offshore drilling); 2. Wear caused by irregular piston movement

1. Apply anti-corrosion coating on the outer wall for offshore drilling; 2. Inspect the piston rod coaxiality monthly (deviation ≤ 0.1 mm)

7

Liner (107.35.110.22)

Alloy cast iron (HT300); nitriding treatment; high-temperature resistant

1. Inner wall wear caused by high-temperature mud (≥ 80°C); 2. Damage caused by improper liner installation

1. Cool the mud to below 60°C before entering the pump; 2. Check the liner installation seat for burrs and smooth it before installation

8

Liner (107.35.110.23)

Alloy cast iron (HT300); chrome plating on inner wall; impact-resistant

1. Chrome plating damage caused by piston impact during pump startup; 2. Inner wall wear caused by high-velocity mud scouring

1. Start the pump smoothly to avoid sudden piston impact; 2. Ensure the mud inlet flow rate is within the rated range

9

Liner (107.35.110.24)

Alloy cast iron (HT300); nitriding treatment; corrosion-resistant

1. Inner wall corrosion caused by sulfide-containing mud; 2. Wear caused by long-term continuous operation

1. Add sulfide scavenger to the mud when sulfide content exceeds 50 ppm; 2. Arrange regular shutdown maintenance every 8 hours of continuous operation

10

Liner (107.35.110.25)

Alloy cast iron (HT300); chrome plating on inner wall; precision machining

1. Thread wear of the liner fixing part caused by repeated disassembly; 2. Inner wall wear caused by piston rubber cup shedding

1. Apply thread lubricant during installation to reduce wear; 2. Inspect the piston rubber cup for shedding regularly

11

Liner (107.35.110.26)

Alloy cast iron (HT300); nitriding treatment; wear-resistant

1. Inner wall wear caused by mud with high hardness particles; 2. Deformation caused by long-term thermal stress

1. Use a mud screen with 120-mesh or finer to filter hard particles; 2. Avoid uneven heating of the liner during winter preheating

12

Liner (107.35.110.27)

Alloy cast iron (HT300); chrome plating on inner wall; high-pressure resistant

1. Cylinder cracking caused by sudden pressure surges; 2. Chrome plating peeling due to chemical erosion of mud additives

1. Install a pressure relief valve (calibrated according to API Spec 7K Clause 5.9) to avoid overpressure; 2. Confirm the compatibility of mud additives with chrome plating before use

13

Piston (107.114.00)

Steel core + nitrile rubber cup; Shore hardness 65±5; oil-resistant

1. Rubber cup wear caused by reciprocating friction with the liner; 2. Rubber cup swelling and deformation due to incompatible mud additives

1. Replace the piston every 500 operating hours; 2. Test the compatibility of mud additives with nitrile rubber before use

14

Piston (107.116.00)

Steel core + FKM (Viton) rubber cup; heat-resistant up to 150°C; corrosion-resistant

1. Rubber cup aging and cracking due to high-temperature mud; 2. Steel core corrosion caused by mud infiltration

1. Keep the mud temperature below 120°C; 2. Apply anti-corrosion grease to the steel core before installation

15

Piston (107.118.00)

Steel core + EPDM rubber cup; weather-resistant; low temperature-resistant

1. Rubber cup hardening and cracking in low-temperature environments (≤ -10°C); 2. Wear caused by abrasive mud

1. Preheat the pump body in low-temperature environments; 2. Strengthen mud solid control to reduce abrasive particles

16

Piston (107.119.00)

Steel core + polyurethane rubber cup; high wear resistance; high elasticity

1. Rubber cup tearing caused by foreign particles between piston and liner; 2. Steel core deformation due to excessive piston rod force

1. Install a scraper ring at the liner inlet to remove foreign particles; 2. Inspect the piston rod for bending regularly

17

Piston (107.120.00)

Steel core + nitrile rubber cup; double cup design; good sealing performance

1. Sealing failure caused by rubber cup wear; 2. Corrosion of the steel core caused by acidic mud

1. Inspect the piston sealing performance weekly by checking pump pressure; 2. Maintain mud pH value ≥ 7.5 to avoid acid corrosion

18

Piston (107.122.00)

Steel core + FKM (Viton) rubber cup; corrosion-resistant to strong acid and alkali; high-pressure resistant

1. Rubber cup damage caused by high-pressure mud impact; 2. Steel core fatigue cracking due to long-term reciprocating movement

1. Operate the pump within the rated pressure range (≤ 35 MPa); 2. Replace the piston when the steel core shows signs of fatigue

19

Piston (107.06.64.00)

Aluminum alloy core + nitrile rubber cup; lightweight; high strength

1. Aluminum core corrosion caused by saltwater mud; 2. Rubber cup wear caused by long-term operation

1. Apply anti-corrosion coating on the aluminum core for offshore drilling; 2. Replace the piston rubber cup every 300 operating hours

20

Piston (107.06.66.00)

Aluminum alloy core + EPDM rubber cup; weather-resistant; corrosion-resistant

1. Rubber cup aging caused by outdoor ultraviolet radiation; 2. Aluminum core deformation due to improper installation

1. Install a protective cover to avoid direct UV exposure; 2. Align the piston correctly during installation to avoid eccentricity

21

Piston (107.06.68.00)

Steel core + polyurethane rubber cup; high wear resistance; impact-resistant

1. Rubber cup damage caused by piston impact during startup; 2. Steel core corrosion caused by mud infiltration

1. Start the pump smoothly to reduce impact; 2. Clean the piston steel core regularly and apply anti-corrosion grease

22

Piston (107.06.70.00)

Steel core + FKM (Viton) rubber cup; high-temperature resistant; corrosion-resistant

1. Rubber cup cracking due to thermal shock; 2. Wear caused by high-velocity mud scouring

1. Avoid rapid temperature changes of the mud; 2. Ensure the mud flow rate is stable

23

Piston (107.11.130.00)

Steel core + nitrile rubber cup; single cup design; easy replacement

1. Rubber cup wear caused by abrasive mud; 2. Sealing failure due to rubber cup deformation

1. Use high-quality lubricating oil to reduce friction; 2. Replace the rubber cup immediately when deformation is found

24

Piston (107.11.135.00)

Steel core + FKM (Viton) rubber cup; corrosion-resistant to chemical additives; high-pressure resistant

1. Rubber cup damage caused by incompatible chemical additives; 2. Steel core wear caused by foreign particles

1. Confirm the compatibility of chemical additives with FKM rubber; 2. Strengthen the maintenance of the mud filter system

25

Liner End Cover (107.29.110.22)

Q235B carbon steel; galvanized finish; nitrile rubber seal

1. Seal failure caused by mud leakage and corrosion; 2. Deformation caused by uneven tightening torque

1. Replace the seal every time the end cover is disassembled; 2. Use a torque wrench to tighten the fixing bolts evenly (torque: 180-220 N·m)

26

Ring Liner Lock (107.29.110.20)

40Cr alloy steel; heat treatment; precision machining

1. Thread wear caused by repeated disassembly; 2. Fatigue deformation due to long-term high-pressure pulsation

1. Apply thread locking glue during installation to enhance anti-loosening performance; 2. Replace the liner lock ring when thread wear exceeds 2 threads

1

Lower Valve Guide (107.29.113.00)

2Cr13 stainless steel; nitriding treatment; copper alloy lining

1. Lining wear caused by long-term reciprocating friction of the valve stem; 2. Corrosion caused by mud infiltration

1. Inject lubricating grease that meets API Spec 16D requirements into the guide gap monthly; 2. Install a mud baffle to prevent mud from entering the guide

2

Valve and Seat (107.11.140.00)

Tungsten carbide valve core; nitrided steel valve seat; hardfacing wear-resistant layer

1. Wear of the sealing surface caused by abrasive mud; 2. Cracking due to thermal shock from rapid temperature changes

1. Control the mud solid content ≤ 15% and use a desilter to remove fine particles; 2. Avoid rapid switching of the valve during high-temperature operation

3

Valve and Seat (107.11.144.00)

Ceramic valve core; 2Cr13 valve seat; corrosion-resistant coating

1. Corrosion of the valve seat caused by acidic mud; 2. Damage to the ceramic valve core due to impact

1. Regularly test the mud pH value and adjust it to 7.5-9.0; 2. Handle the valve core with care during installation to avoid collision

4

Spring, Valve (107.11.110.16)

50CrVA spring steel; heat treatment; shot peening

1. Fatigue fracture due to long-term reciprocating compression; 2. Corrosion caused by mud and moisture infiltration

1. Replace the valve spring every 600 operating hours; 2. Install a dust cover to prevent mud and moisture from entering the spring cavity

5

O Ring Rubber (7602-1600-44)

FKM (Viton) rubber; Shore hardness 75±5; compliant with ISO 6195:2018

1. Aging and cracking due to long-term contact with high-temperature mud; 2. Damage caused by burrs on the mating surface

1. Store O-rings in a cool, dry environment (temperature 5-25°C) away from direct sunlight; 2. Deburr the mating surface before installation and apply compatible lubricant

1

Pipe Nipple (107.29.110.21)

Brass; precision machined threads; passivated surface

1. Thread wear caused by repeated disassembly; 2. Corrosion caused by mud and moisture

1. Apply thread sealant during installation to reduce wear; 2. Clean the thread surface regularly and apply anti-corrosion grease

2

Clamp Piston Rod (107.29.118.00)

42CrMo alloy steel; heat treatment; high clamping force

1. Loosening caused by long-term pump vibration; 2. Wear of the clamping surface caused by piston rod movement

1. Use thread locking glue during installation and tighten to the specified torque (320 N·m); 2. Inspect the clamp tightness weekly

3

Rod Piston B (107.29.110.23)

42CrMo alloy steel; forging forming; chrome plating on surface

1. Chrome plating wear caused by reciprocating movement; 2. Fatigue cracking due to long-term high-pressure force

1. Apply lubricating oil to the rod surface regularly; 2. Inspect the rod for fatigue cracks quarterly and replace if found

4

Rod Piston M (107.29.110.24)

35CrMo alloy steel; heat treatment; nitriding surface

1. Nitriding layer peeling due to impact; 2. Corrosion caused by acidic mud

1. Avoid impact on the piston rod during installation and maintenance; 2. Maintain mud pH value ≥ 7.5 to prevent acid corrosion