BOMCO F-2200HL Mud Pump Parts-2

1

AH220101-010505

42CrMo Alloy Steel (Quenched & Tempered) - Tensile strength ≥980MPa, surface hardness HRC 38-42; shot-peened surface to improve fatigue life by 25%

1. Abrasive wear from high-solid content drilling mud (solid content >8%); 2. Stress corrosion cracking (SCC) induced by H₂S in sour gas drilling environments; 3. Cyclic pressure fatigue leading to microcracks in pressure-bearing areas

1. Implement multi-stage filtration of drilling mud to reduce solid content to ≤5%; 2. Use H₂S-resistant corrosion inhibitors and apply anti-corrosion coating in sour gas applications; 3. Conduct ultrasonic flaw detection (UT) every 400 operating hours to identify hidden fatigue cracks

2

AH220101-010507

35CrMo Alloy Steel - Forged blank with normalizing heat treatment; impact toughness αk ≥60J/cm², excellent weldability for on-site repair if needed

1. Erosion-corrosion from high-velocity drilling mud flow (velocity >10m/s); 2. Cavitation damage due to insufficient inlet pressure (≤0.2MPa); 3. Thermal fatigue from repeated start-stop cycles causing temperature fluctuations

1. Optimize fluid flow channels to reduce local velocity to ≤8m/s; 2. Maintain inlet pressure at 0.3-0.5MPa by checking and cleaning suction lines regularly; 3. Ensure the pump’s cooling system operates normally to keep component temperature within 40-85°C

3

AH220201-053001

Stainless Steel 316L - Passivated surface treatment; superior corrosion resistance to chloride ions (≤2000ppm) and organic acids in drilling mud

1. Pitting corrosion from seawater-based drilling mud; 2. Crevice corrosion at sealing interfaces due to mud residue accumulation; 3. Abrasive wear from fine sand particles embedded in mud cakes

1. Add chloride ion scavengers to seawater-based mud; 2. Clean sealing interfaces thoroughly before installation and apply anti-seize compound; 3. Install 200-mesh fine filters in the mud circulation system to remove fine sand

4

AH000003-042700

40CrNiMoA Alloy Steel - Nitrided surface (nitride layer depth 0.3-0.5mm); surface hardness HRC ≥55, core toughness retained for impact resistance

1. Adhesive wear from metal-to-metal contact under high pressure; 2. Fatigue pitting on fluid contact surfaces due to cyclic load application; 3. Corrosion from acidic drilling mud (pH <6.0)

1. Use extreme pressure (EP) lubricants to form a protective film between metal surfaces; 2. Operate the pump within the rated pressure range (avoid overpressure exceeding 10%); 3. Adjust drilling mud pH to 6.5-8.5 using neutralizing agents and monitor regularly

5

AH000003-042800

Forged Carbon Steel Q345R - Compliant with API Spec 7K for pressure vessel components; high weldability and impact resistance at low temperatures (-20°C)

1. Weld joint fatigue from cyclic pressure fluctuations; 2. Abrasive wear from sand-laden drilling mud in desert drilling areas; 3. Hydrogen-induced cracking (HIC) due to moisture absorption in wet environments

1. Conduct magnetic particle testing (MPT) on weld joints every 800 operating hours; 2. Install wear-resistant liners in high-abrasion zones of the component; 3. Dry the component thoroughly after use and store in a climate-controlled warehouse to prevent moisture absorption

6

AH000003-042900

20CrMnTi Alloy Steel - Carburized surface (carburizing depth 0.8-1.2mm); surface hardness HRC 58-62, core ductility ≥12%

1. Gear tooth wear in fluid end drive mechanisms due to improper meshing; 2. Abrasive wear from metal particles contaminating the lubricating oil; 3. Thermal oxidation at high operating temperatures (≥120°C)

1. Adjust gear meshing clearance to 0.15-0.30mm per BOMCO OEM specifications; 2. Use magnetic oil filters to remove metal debris from lubricants and replace oil every 500 operating hours; 3. Ensure the cooling system of the transmission unit is functioning properly to control temperature

7

AH000003-043000

17-4 PH Stainless Steel - Precipitation-hardened; corrosion resistance comparable to 316L with higher strength (σb ≥1030MPa)

1. Stress corrosion cracking under combined high pressure and tensile stress; 2. Wear from fine abrasive particles in drilling mud; 3. Degradation from exposure to low-molecular-weight esters in drilling fluid additives

1. Relieve residual stress through post-installation heat treatment at 480°C for 2 hours; 2. Use centrifugal separators to reduce fine particle content in drilling mud; 3. Verify chemical compatibility of drilling fluid additives with 17-4 PH steel before use

8

AH000003-0411

35CrMo Alloy Steel - Quenched and tempered to achieve a balanced combination of strength (σb ≥900MPa) and toughness

1. Erosion from high-velocity drilling mud impingement on component surfaces; 2. Fatigue failure from cyclic pressure loading; 3. Corrosion from saltwater intrusion in offshore drilling operations

1. Install flow deflectors to reduce direct mud impingement on critical surfaces; 2. Implement load monitoring to avoid cyclic overload (limit load fluctuations to ≤15%); 3. Apply marine-grade anti-corrosion coating and inspect every 3 months in offshore environments

9

AH010004-0700

42CrMo Alloy Steel - Induction-hardened surface; enhanced wear resistance in high-velocity fluid zones, surface roughness Ra ≤0.8μm

1. Abrasive wear from drilling mud cuttings; 2. Fatigue cracking from surface stress concentrations; 3. Corrosion from acidic mud additives

1. Smooth all sharp edges and corners to reduce stress concentration; 2. Implement regular maintenance of mud filtration systems to minimize cuttings content; 3. Apply a corrosion-resistant primer and topcoat to external surfaces

10

AH010004-3100

Stainless Steel 316Ti - Titanium-stabilized to prevent intergranular corrosion during welding or high-temperature operation (≤150°C)

1. Intergranular corrosion from improper welding procedures; 2. Abrasive wear from drilling mud cuttings; 3. Galling between mating stainless steel components

1. Use low-heat input welding techniques (e.g., TIG welding) if repair is necessary; 2. Reduce solid particle content in drilling mud via cyclonic separation; 3. Use anti-galling compounds on mating surfaces and ensure proper lubrication

11

AH010004-3200

40CrNiMoA Alloy Steel - Forged for uniform material structure; high fatigue strength (σ-1 ≥500MPa) for long-term cyclic operation

1. Torsional fatigue from rotational fluid flow in the component; 2. Abrasive wear from solid particles in mud; 3. Corrosion from moisture in humid drilling environments

1. Balance rotating components to G2.5 grade to reduce torsional stress; 2. Use wear-resistant inserts in high-abrasion areas; 3. Store spare parts in a dry, dehumidified warehouse with relative humidity ≤60%

12

AH220201-050601

42CrMo Alloy Steel - Shot-peened surface to improve fatigue resistance; compliant with API Spec 7K fatigue testing requirements

1. Fatigue failure from cyclic pressure and bending loads; 2. Abrasive wear from contaminated drilling mud; 3. Corrosion from drilling fluid containing sulfur compounds

1. Conduct periodic non-destructive testing (NDT) to detect fatigue cracks; 2. Maintain drilling mud cleanliness by regular filter replacement; 3. Use sulfur-resistant lubricants and coatings in sour environments

13

AH220201-053002

35CrMo Alloy Steel - Tempered to achieve good toughness; suitable for fluid end manifold components

1. Pressure fatigue from repeated pressure cycles; 2. Abrasive wear from mud flow through manifold channels; 3. Corrosion from chemical additives in drilling mud

1. Avoid rapid pressure changes (limit pressure rise rate to ≤0.5MPa/s); 2. Clean manifold channels quarterly to remove accumulated mud deposits; 3. Test drilling mud for chemical compatibility with the component material annually

14

AH220201-053003

20CrMnTi Alloy Steel - Carburized and quenched; high surface hardness for wear resistance in contact zones

1. Contact wear from metal-to-metal interaction under high pressure; 2. Fatigue pitting on contact surfaces; 3. Corrosion from environmental moisture

1. Use lubricants with anti-wear additives to reduce metal contact; 2. Monitor contact surface condition during routine maintenance; 3. Apply anti-rust oil to surfaces during storage and between uses

15

AH010004-3300

42CrMo Alloy Steel - Forged and precision machined; dimensional accuracy within ±0.02mm for seamless integration

1. Wear at mating interfaces due to dimensional misalignment; 2. Abrasive wear from drilling mud particles; 3. Fatigue failure from cyclic loading

1. Ensure proper alignment during installation using laser alignment tools; 2. Install particle filters to reduce mud particle content; 3. Operate within the recommended load range to avoid fatigue

16

AH010004-3400

Stainless Steel 316L - Passivated and polished surface; reduced mud adhesion and improved corrosion resistance

1. Pitting corrosion from chloride ions; 2. Abrasive wear from fine sand particles; 3. Crevice corrosion at bolted connections

1. Add corrosion inhibitors to drilling mud in high-chloride environments; 2. Use fine-mesh strainers to remove fine sand; 3. Clean bolted connections regularly and use anti-seize compounds

17

AH010004-3500

40CrNiMoA Alloy Steel - Nitrided surface; improved wear and corrosion resistance for long service life

1. Wear at sliding interfaces; 2. Fatigue failure from cyclic loads; 3. Galling between mating parts

1. Maintain proper sliding interface clearance (0.10-0.20mm); 2. Avoid cyclic overload by monitoring pump pressure; 3. Use compatible materials for mating components

18

AH010004-3600

35CrMo Alloy Steel - Quenched and tempered; balanced strength and ductility for fluid end accessories

1. Abrasive wear from contaminated drilling mud; 2. Bending fatigue from unbalanced loads; 3. Corrosion from harsh environmental conditions

1. Regularly replace drilling mud filters to maintain cleanliness; 2. Balance rotating parts to reduce unbalanced loads; 3. Apply protective coating to external surfaces exposed to the environment

19

AH010004-3700

20CrMnTi Alloy Steel - Carburized component; high surface hardness and core toughness for dynamic fluid end applications

1. Wear from dynamic contact with moving parts; 2. Fatigue cracking from cyclic motion; 3. Abrasive wear from mud particles

1. Ensure proper lubrication of dynamic contact surfaces; 2. Inspect for fatigue cracks using dye penetrant testing (DPT) regularly; 3. Use mud filtration systems to reduce particle content

1

AH220101-010505

20CrMnTi Alloy Steel - Carburized gear blank; carburizing depth 0.8-1.2mm, surface hardness HRC 58-62, core hardness HRC 30-35

1. Contact fatigue (pitting) on gear teeth due to cyclic loading; 2. Abrasive wear from metal particles contaminating the lubricating oil; 3. Gear tooth scuffing caused by insufficient lubrication or high operating temperature

1. Use lubricants with anti-fatigue and anti-scuff additives (ISO VG 460); 2. Install magnetic oil separators to remove metal debris and replace lubricating oil every 500 operating hours; 3. Monitor gearbox temperature (normal range: 40-80°C) and investigate any abnormal rise promptly

2

AH220101-010507

42CrMo Alloy Steel - Forged shaft with induction hardening; surface hardness HRC 55-60, excellent torsional strength (torsional shear strength ≥550MPa)

1. Torsional fatigue failure from high torque and sudden load changes (e.g., sudden pump startup); 2. Wear at bearing seats due to vibration; 3. Corrosion from moisture ingress into the gearbox

1. Avoid sudden startup and shutdown; implement soft start/stop procedures; 2. Check bearing clearance monthly (maximum allowable clearance ≤0.05mm) and replace bearings if worn; 3. Inspect gearbox seals regularly to prevent moisture intrusion and replace damaged seals immediately

1

420101123810002000

Fluorocarbon Rubber (FKM/Viton) - Temperature range: -20°C to 200°C; excellent chemical resistance to oils, acids, alkalis, and drilling mud additives

1. Abrasive wear from solid cuttings in drilling mud; 2. Compression set from long-term static loading (e.g., pump shutdown for extended periods); 3. Degradation from exposure to low-molecular-weight ketones or esters in drilling fluid additives

1. Use 200-mesh filters to remove solid cuttings from drilling mud; 2. Maintain seal compression ratio at 15-25% (per BOMCO OEM specifications) and relieve compression if the pump is shutdown for more than 7 days; 3. Verify chemical compatibility of all drilling fluid additives with FKM rubber before use

2

420201061130120060

Reinforced Polyurethane (PU) - Abrasion resistance: DIN 53516 ≥80mm³; high elasticity and tear strength (tear strength ≥35kN/m)

1. Abrasive wear from high-velocity drilling mud (velocity >8m/s); 2. Hydrolytic degradation in water-based drilling mud (especially in high-temperature environments); 3. Oxidation from prolonged exposure to air and sunlight during storage

1. Optimize fluid flow design to reduce velocity at seal interfaces to ≤5m/s; 2. Add anti-hydrolysis additives to water-based drilling mud and control operating temperature below 120°C; 3. Store spare parts in a dark, airtight container with desiccant to prevent oxidation and moisture absorption

3

420503016301600000

Ceramic Composite (Al₂O₃ ≥95%) - Hardness: HV ≥1800; superior wear resistance and chemical inertness

1. Impact damage from large cuttings or gravel in drilling mud; 2. Thermal shock from rapid temperature changes (e.g., sudden cooling after high-temperature operation); 3. Chemical corrosion from strong alkalis (pH >10) in drilling mud

1. Install centrifugal separators to remove large particles (diameter >2mm) from drilling mud; 2. Limit temperature change rate to ≤5°C/min by controlling the cooling system operation; 3. Adjust drilling mud pH to the neutral range (6.5-8.5) using acid neutralizing agents

4

061203010010002001

Nitrile Rubber (NBR) with Carbon Fiber Filler - Oil resistance: ASTM D471 ≤15% volume swell; enhanced abrasion resistance compared to standard NBR

1. Abrasive wear from sand-laden drilling mud; 2. Swelling and softening from exposure to mineral oils or oil-based drilling mud; 3. Hardening and cracking at low temperatures (≤-10°C)

1. Install sand screens in the mud circulation system to reduce sand content; 2. Use oil-resistant NBR grades for oil-based drilling mud applications; 3. For low-temperature operations (≤-10°C), use low-temperature-resistant NBR or replace with silicone rubber (VMQ) seals