Prefabricated steel structure transportation system

Introduction

The production process of steel structure transportation system products usually includes design, raw material procurement, processing and manufacturing, quality inspection, surface treatment, transportation, and installation. The following is a detailed breakdown of the process:

1. Design phase

Requirement analysis: Clarify customer requirements, determine the purpose of the system (such as logistics transportation, storage equipment), load capacity, and operating environment.

Structural design: Use CAD/3D modeling software (such as SolidWorks, Tekla) to design steel structures, including trusses, brackets, tracks, and other components.

Mechanical calculation: Verify structural strength, stiffness, and stability through finite element analysis (FEA).

Drawing output: Generate manufacturing drawings, assembly drawings, and bill of materials (BOM).

2. Raw material procurement

Steel selection: Purchase steel sections (H-beams, I-beams), steel plates, steel pipes, etc. according to design requirements. Common materials include Q235B/Q355B (Chinese standard) or ASTM A36/A572 (international standard).

Auxiliary materials: bolts, welding rods, anti-corrosion coatings, etc.

3. Processing and manufacturing

(1) Cutting

Use flame cutting, laser cutting, or sawing machines to cut steel to ensure dimensional accuracy.

Remove burrs from cutting edges and polish.

(2) Forming

Bending/Rolling: Cold bending or hot bending of steel plates (such as conveyor belt rollers).

Drilling/milling: machining bolt holes or connection points.

(3) Welding and assembly

Component welding: submerged arc welding, CO ₂ gas shielded welding, etc. are used to weld main structures such as trusses and brackets.

Pre assembly: Conduct trial assembly in the factory to check fit and dimensions.

(4) Mechanical processing

Precision machining of high tolerance components (such as rail joints) to ensure flatness and dimensional accuracy.

4. Quality inspection

Weld inspection: Check the welding quality through ultrasonic testing (UT), magnetic particle testing (MT), or X-ray testing (RT).

Dimensional inspection: Verify key dimensions (such as span and verticality) based on the design drawings.

Load testing: Conduct simulated load testing (e.g. trial operation of conveyor).

5. Surface treatment

Rust removal: achieve Sa2.5 level (ISO 8501 standard) through sandblasting or shot blasting.

Anti corrosion coating:

Primer: epoxy zinc rich primer;

Intermediate paint: epoxy mica iron oxide paint;

Topcoat: Polyurethane paint (selected according to environmental requirements).

Galvanization (optional): Hot dip galvanizing (suitable for highly corrosive outdoor environments).

6. Packaging and Transportation

Protective packaging: Precision components (such as tracks) are packaged in wooden boxes to prevent deformation during transportation.

Tags: Mark suspension points, center of gravity, and moisture resistance indicators.

7. On site installation

Basic inspection: Confirm the position and levelness of the embedded parts.

Segmented lifting: Use a crane to install the main structure.

Bolt/Welding: Initial and final tightening or on-site welding of high-strength bolts.

Debugging: Adjust the straightness of the track and the smoothness of the conveyor operation.

8. Handover and Acceptance

Customer inspection: Verify technical parameters and sign acceptance documents.

File transfer: Provide material certificates, operation manuals, and maintenance guidelines.