Steel structure transportation system

Introduction

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

1. Design Phase

• Requirement Analysis: Clarify customer needs, determine the system's purpose (e.g., logistics conveying, storage equipment), load capacity, and operating environment.

• Structural Design: Use CAD/3D modeling software (e.g., SolidWorks, Tekla) to design steel structures, including trusses, supports, rails, and other components.

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

• Drawing Output: Generate fabrication drawings, assembly diagrams, and a Bill of Materials (BOM).

2. Raw Material Procurement

• Steel Selection: Purchase section steel (H-beams, I-beams), steel plates, steel pipes, etc., based on design requirements. Common materials include Q235B/Q355B (Chinese standards) or ASTM A36/A572 (international standards).

• Auxiliary Materials: Bolts, welding rods, anti-corrosion coatings, etc.

3. Processing and Fabrication

(1) Cutting

• Use flame cutting, laser cutting, or sawing machines to cut steel materials, ensuring dimensional accuracy.

• Deburr and polish cut edges.

(2) Forming

• Bending/Rolling: Cold or hot bending of steel plates (e.g., conveyor rollers).

• Drilling/Milling: Process bolt holes or connection points.

(3) Welding & Assembly

• Component Welding: Use submerged arc welding, CO₂ gas shielded welding, etc., to weld main structures (e.g., trusses, brackets).

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

(4) Machining

• Perform precision machining on high-tolerance components (e.g., rail joints) to ensure flatness and dimensional accuracy.

4. Quality Inspection

• Weld Inspection: Check welding quality via ultrasonic testing (UT), magnetic particle testing (MT), or X-ray testing (RT).

• Dimensional Check: Verify critical dimensions (e.g., span, verticality) against design drawings.

• Load Testing: Conduct simulated load tests (e.g., trial operation of conveyors).

5. Surface Treatment

• Rust Removal: Achieve Sa2.5 grade (ISO 8501 standard) via sandblasting or shot blasting.

• Anti-Corrosion Coating:

• Primer: Epoxy zinc-rich primer;

• Intermediate coat: Epoxy mica iron oxide paint;

• Topcoat: Polyurethane paint (selected based on environmental requirements).

• Galvanizing (Optional): Hot-dip galvanizing (for high-corrosion outdoor environments).

6. Packaging & Transportation

• Protective Packaging: Use wooden crates for precision components (e.g., rails) to prevent deformation during transit.

• Labeling: Mark lifting points, center of gravity, and moisture-proof indicators.

7. On-Site Installation

• Foundation Inspection: Verify the position and levelness of embedded parts.

• Sectional Hoisting: Use cranes to install main structures.

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

• Commissioning: Adjust rail straightness and conveyor operation smoothness.

8. Handover & Acceptance

• Customer Inspection: Verify technical parameters and sign acceptance documents.

• Documentation Transfer: Provide material certificates, operation manuals, and maintenance guidelines.