Parts Classification for Mast Support Z04180000007AA

1

Mast support

Z04180000007AA

High-strength alloy steel (Q355B)

1. Long-term overload bearing; 2. Fatigue from frequent vibration during drilling.

1. Regularly check load-bearing capacity, avoid exceeding rated limits; 2. Inspect for weld cracks monthly and reinforce promptly.

2

Pin plate

Z04180100001AA

Carbon structural steel (Q235A)

1. Wear from repeated pin rotation; 2. Corrosion from outdoor moisture and dust.

1. Apply anti-corrosion grease quarterly; 2. Avoid forced pin insertion/extraction to prevent plate deformation.

3

Blind

P9870095AA

Low-carbon steel (SPHC)

1. Impact damage during installation/transport; 2. Corrosion from drilling fluid splashes.

1. Handle gently during transport, avoid collision; 2. Clean surface drilling fluid residues weekly.

4

Column

P6004245AA

High-strength steel (Q355B)

1. Bending deformation from uneven load; 2. Fatigue wear from long-term vertical stress.

1. Ensure uniform load distribution during mast assembly; 2. Inspect straightness monthly, correct minor deformation promptly.

5

Stiffener

P9970970AA

Alloy steel (Q345D)

1. Stress concentration at welding joints; 2. Wear from friction with adjacent components.

1. Check weld integrity quarterly, repair cracks; 2. Add wear-resistant gaskets at friction points.

6

Cross brace

P9870096AA

High-strength steel (Q355B)

1. Torsional deformation from mast vibration; 2. Corrosion in humid outdoor environments.

1. Tighten connections regularly to reduce vibration; 2. Apply anti-rust paint annually.

7

Brace

P9970971AA

Alloy steel (Q345D)

1. Overload stress during mast lifting; 2. Wear from repeated assembly/disassembly.

1. Follow standard lifting procedures to avoid overload; 2. Inspect for wear before each assembly.

8

Brace

Z04180200002AA

High-strength alloy steel (Q355B)

1. Fatigue from continuous load-bearing; 2. Impact damage from falling debris at drilling sites.

1. Rotate spare braces periodically to reduce fatigue; 2. Install protective covers to prevent debris impact.

9

Brace seat

P9910988AA

Carbon structural steel (Q235A)

1. Wear from brace rotation; 2. Stress concentration at fixed points.

1. Lubricate contact surfaces monthly; 2. Check for fixed-point loosening and retighten promptly.

10

Vertical support, stairs

P9910989AA

Carbon steel (Q235B)

1. Wear from frequent personnel movement; 2. Corrosion from rainwater and drilling fluid.

1. Clean step surfaces weekly to remove debris; 2. Apply anti-corrosion coating annually.

11

Cross brace, stairs L460

P9810139AA

Carbon steel (Q235A)

1. Bending from uneven weight distribution; 2. Wear from repeated step vibration.

1. Avoid overcrowding on stairs; 2. Inspect for bending monthly and replace if needed.

12

Connection seat

4301324060

Alloy steel (Q345D)

1. Wear from component connection rotation; 2. Corrosion from harsh drilling site environments.

1. Apply lubricating grease quarterly; 2. Inspect connection tightness weekly.

13

Cross pipe L2000

P9970972AA

High-strength steel (Q355B)

1. Torsional deformation from mast vibration; 2. Impact damage during transport/installation.

1. Secure cross pipe firmly to reduce vibration; 2. Use protective sleeves during transport.

1

Bolt M24X60

4309300024

High-strength alloy steel (10.9 grade)

1. Loosening from long-term vibration; 2. Thread wear from repeated assembly/disassembly.

1. Use torque wrench to tighten to 320-350N·m (per GB/T 3098.1-2010); 2. Replace bolts after 5 assembly cycles.

2

Nut M24

4313100024

Carbon steel (8 grade, galvanized)

1. Thread corrosion; 2. Deformation from over-tightening.

1. Apply anti-rust thread compound before installation; 2. Avoid over-tightening to prevent thread deformation.

3

Spring washer 24

P9970972AA

Spring steel (65Mn)

1. Fatigue failure from repeated compression; 2. Corrosion leading to loss of elasticity.

1. Replace spring washers with bolts; 2. Store in dry environment to avoid corrosion.

1

What standard should the M24 bolts (4309300024) comply with, and what is the recommended tightening torque?

They comply with GB/T 3098.1-2010 (high-strength bolts). Recommended torque is 320-350N·m to ensure firm locking and avoid loosening from mast vibration.

2

How to handle corrosion of structural components like cross brace (P9870096AA) in humid drilling environments?

First, remove rust with a wire brush, then apply anti-rust paint (compliant with GB/T 1720-1979) annually. Apply anti-corrosion grease to connection points quarterly to slow corrosion.

3

When should structural components like the column (P6004245AA) be replaced?

Replace if bending deformation exceeds 0.5mm/m (per industrial drilling rig standards), or if weld cracks, fatigue damage, or corrosion depth exceeding 10% of the component thickness are detected.