XQ140/12YA Brake Disc Heat Deformation Resistance

1

General Component

12AZ-111

35CrMo Alloy Steel

1. Torsional fatigue from cyclic torque transmission; 2. Corrosion from drilling fluid intrusion

1. Inspect for micro-cracks monthly via magnetic particle testing; 2. Lubricate with corrosion-resistant grease (NLGI Grade 2) every 150 operating hours

2

General Component

12AZ-202

QT500-10 Ductile Iron

1. Impact damage from sudden pipe movement; 2. Wear from contact with moving components

1. Install rubber bumpers on component surfaces; 2. Apply molybdenum disulfide lubricant to contact areas

3

General Component

12AB-8

304 Stainless Steel

1. Pitting corrosion from saltwater in offshore operations; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters in fluid lines

4

General Component

12AZ-10

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

5

General Component

12AZ-149

QT450-10 Ductile Iron

1. Thermal stress cracking from high-temperature wells; 2. Wear from fluid splashing

1. Maintain operating temperature below 120°C; 2. Clean surface weekly to remove fluid residues

6

General Component

12AB-59

Q355B Carbon Steel

1. Corrosion from atmospheric moisture; 2. Weld fatigue from vibration (if welded)

1. Apply anti-corrosion paint (epoxy primer + polyurethane topcoat) annually; 2. Inspect weld seams monthly for cracks

7

General Component

12AZ-52

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from cyclic vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

8

General Component

12AB-17

35CrMo Alloy Steel

1. Abrasive wear from debris in fluid; 2. Fatigue cracking from cyclic stress

1. Install debris filters in fluid lines; 2. Conduct ultrasonic testing every 6 months

9

General Component

12AQ-01

40CrNiMoA Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating for sour service

10

General Component

12AQ-02

35CrMo Alloy Steel

1. Wear from relative movement with mating components; 2. Corrosion from drilling fluid

1. Apply lubricant to contact surfaces; 2. Install seals to prevent fluid intrusion

11

Spring

12AQ-04

60Si2Mn High-Elasticity Steel

1. Elastic fatigue from repeated compression cycles; 2. Stress corrosion cracking in high-humidity environments

1. Replace springs proactively every 10,000 compression cycles; 2. Apply anti-corrosion oil (ISO VG 32) after each washdown

12

General Component

12AQ-03

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surface weekly to remove fluid residues

13

Flat Key (6*6*40)

12AZ-141

45# Carbon Steel (Heat-Treated)

1. Shear failure from excessive torque transmission; 2. Wear from relative movement with keyways

1. Ensure key and keyway fit per tolerance (H9/h9); 2. Avoid over-torque during assembly

14

Flat Key

12AZ-136

45# Carbon Steel (Heat-Treated)

1. Wear from vibration-induced micro-movement; 2. Corrosion from moisture in keyways

1. Apply anti-corrosion grease to key surfaces before assembly; 2. Ensure keyway is clean and dry

15

Flat Key

12AB-35

45# Carbon Steel (Heat-Treated)

1. Deformation from high-temperature operation; 2. Wear from contaminated lubricant

1. Maintain operating temperature below 150°C; 2. Use clean, high-quality lubricant

16

General Component

12AZ-261

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install high-efficiency filters in fluid systems

17

General Component

12AB-28.2

35CrMo Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from drilling fluid

1. Inspect for fatigue cracks monthly; 2. Apply anti-corrosion grease every 150 operating hours

18

General Component

12AB-28.1

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

19

Screw (M10*20)

-

Alloy Steel (8.8 Grade)

1. Thread stripping from over-tightening; 2. Fatigue failure from cyclic vibration

1. Tighten to 30 N·m with torque wrench; 2. Use lock washers to prevent loosening

20

Screw (M10*25)

-

Alloy Steel (8.8 Grade)

1. Thread galling from improper assembly; 2. Corrosion from humidity

1. Use anti-seize compound during assembly; 2. Inspect threads monthly for corrosion

21

Screw (M5*6)

-

Alloy Steel (8.8 Grade)

1. Shear failure from excessive load; 2. Thread damage from mishandling

1. Operate within load capacity (max 5kN); 2. Use proper screwdriver to avoid cross-threading

22

Brake Disc

XYQ12.Z-25

42CrMo Alloy Steel (Heat-Treated HRC 38-42)

1. Abrasive wear from brake pad contact; 2. Thermal deformation from frequent braking

1. Inspect disc thickness monthly (replace if below minimum 12mm); 2. Avoid continuous heavy braking to prevent overheating

23

Gauge (60mm/16MPa)

-

Stainless Steel Case + Copper Alloy Internal Components

1. Damage from mechanical impact; 2. Accuracy drift from high-temperature exposure

1. Install protective cover to prevent impact; 2. Calibrate gauge annually per GB/T 1226-2010 standard

24

General Component

12AZ-218

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

25

General Component

12AZ-243

35CrMo Alloy Steel

1. Wear from relative movement with mating components; 2. Fatigue cracking from cyclic stress

1. Apply molybdenum disulfide lubricant to contact surfaces; 2. Conduct non-destructive testing every 3 months

26

General Component

12AZ-39

QT500-10 Ductile Iron

1. Impact damage from sudden pipe movement; 2. Wear from fluid splashing

1. Install rubber bumpers; 2. Clean surface weekly to remove fluid residues

27

General Component

12AB-6

40CrNiMoA Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating

1

Bearing

208 GB276-82

GCr15 Bearing Steel (Inner/Outer Ring + Rolling Elements)

1. Abrasive wear from contaminated lubricant; 2. Fatigue failure from excessive load

1. Use clean, high-quality bearing grease (ISO VG 22); 2. Ensure operating load is within rated capacity (dynamic load 29.5kN)

2

General Component

XYQ3C.Z.1-4

40CrNiMoA Alloy Steel

1. Torsional fatigue from high torque transmission; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating for sour service

3

General Component

XYQ3C.Z.1-12

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

4

General Component

XYQ3C.Z-17

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surface weekly to remove fluid residues

5

General Component

XYQ6B.B-7

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters in fluid lines

6

General Component

XYQ3C.B-6

35CrMo Alloy Steel

1. Wear from relative movement with mating components; 2. Fatigue cracking from cyclic stress

1. Apply molybdenum disulfide lubricant to contact surfaces; 2. Conduct non-destructive testing every 3 months

1

General Component (φ12*8*10)

24.600-09 (TQ35)

35CrMo Alloy Steel (Carburized Surface)

1. Wear from relative movement with mating components; 2. Corrosion from drilling fluid intrusion

1. Apply anti-wear lubricant to surfaces; 2. Install seals to prevent fluid intrusion

2

General Component

52.100-12 (TQ340-35Y)

40CrNiMoA Alloy Steel

1. Torsional fatigue from extreme torque transmission; 2. Corrosion from H₂S in sour wells

1. Operate within rated torque range; 2. Use NACE MR0175-compliant coating

3

General Component

52.100-03 (TQ340-35Y)

35CrMo Alloy Steel

1. Shear failure from uneven load distribution; 2. Wear from contaminated lubricant

1. Ensure even load bearing during installation; 2. Replace lubricant every 300 operating hours

4

Bearing

6214 GB/T276-94 (TQ340/35Y)

GCr15 Bearing Steel (Inner/Outer Ring + Rolling Elements)

1. Fatigue failure from high rotation speed and load; 2. Abrasive wear from contaminated lubricant

1. Maintain lubricant cleanliness (NAS 7 class or higher); 2. Monitor rotation speed (limit to 3600 rpm)

5

Inserts

XYQ6B-35 B6-31(2)73-70 (TQ340)

WC-Co Cemented Carbide + Steel Base

1. Wear from contact with rough pipe surfaces; 2. Chipping from sudden impact with pipe burrs

1. Inspect insert surface monthly (replace if wear depth >0.8mm); 2. Remove pipe burrs before clamping

6

General Component (Qty:4)

52.100-14 (TQ340-35Y)

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surface weekly to remove fluid residues

7

General Component (Qty:3)

03.06-13 (TQ340-35Y)

304 Stainless Steel

1. Corrosion from chemical drilling fluid additives; 2. Wear from vibration

1. Test fluid additives for compatibility quarterly; 2. Install vibration dampeners

8

General Component

85 (TQ35)

Q355B Carbon Steel

1. Corrosion from atmospheric moisture; 2. Weld fatigue from vibration (if welded)

1. Apply anti-corrosion paint annually; 2. Inspect weld seams monthly for cracks

1

XQ114/6YB Replacement Part

XQ114/6YB

35CrMo Alloy Steel / 304 Stainless Steel

1. Wear from compact-space assembly stress; 2. Corrosion from drilling fluid pooling

1. Use precision installation tools; 2. Drill small drainage holes to prevent fluid accumulation

2

ZQ203-100 Replacement Part

ZQ203-100

27SiMn Alloy Steel / WC-Co Cemented Carbide

1. Wear from high hydraulic pressure; 2. Corrosion from hydraulic oil contamination

1. Maintain hydraulic oil cleanliness; 2. Replace seals proactively

3

XYQ3B Replacement Part

XYQ3B

35CrMo Alloy Steel

1. Torsional fatigue from cyclic torque; 2. Corrosion from drilling fluid

1. Inspect for fatigue cracks monthly; 2. Apply anti-corrosion grease regularly

4

XYQ6G Replacement Part

XYQ6G

304 Stainless Steel

1. Pitting corrosion from saltwater; 2. Wear from abrasive particles

1. Rinse with fresh water after offshore use; 2. Install particle filters

5

XQ3F Replacement Part

XQ3F

Alloy Steel (8.8 Grade)

1. Thread stripping from over-tightening; 2. Fatigue failure from vibration

1. Tighten to specified torque; 2. Use lock washers

6

XYQ6B Replacement Part

XYQ6B

QT500-10 Ductile Iron

1. Impact damage from pipe handling; 2. Wear from fluid splashing

1. Install protective guards; 2. Clean surfaces weekly