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Dec 17 2018
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In the production and design of steel structure industrial equipment, it is necessary to comprehensively consider factors such as structural safety, manufacturing technology, economy, and usage environment. The following are key considerations:
Clearly define the static load (self weight, material), dynamic load (vibration, impact), wind/earthquake load, etc. that the equipment is subjected to.
Use finite element analysis (FEA) to verify stress distribution, deformation, and stability, and avoid local stress concentration.
Select steel materials (such as Q235B, Q355B, weathering steel, stainless steel, etc.) based on the working conditions, considering strength, toughness, and corrosion resistance.
Special environments (high temperature, low temperature, corrosive media) require the use of special steel or anti-corrosion coatings (such as hot-dip galvanizing, spray coating).
Welding: Ensure the strength of the weld seam, avoid defects such as incomplete penetration and cracks, and perform non-destructive testing (UT/RT) on important parts.
Bolt connection: High strength bolts require pre tightening force control, while ordinary bolts require anti loosening measures (such as double nuts and thread glue).
Adopting universal standards (such as GB, ASTM, EN) for easy mass production and post maintenance.
Modular design can reduce the difficulty of transportation and installation (such as segmented towers, detachable frames).
Cutting (laser/plasma cutting) requires ensuring dimensional tolerances to avoid assembly deviations.
Accurate drilling positioning to prevent misalignment of bolt holes.
Develop welding procedure qualification (WPS/PQR) to control heat input and reduce deformation.
Correction (mechanical or flame correction) and stress relief (annealing or vibration aging) are required after welding.
Sandblasting rust removal to Sa2.5 level (ISO 8501) to ensure coating adhesion.
Choose anti-corrosion solutions based on the environment (epoxy zinc rich primer+polyurethane topcoat, hot-dip galvanizing, etc.).
Raw materials entering the site require retesting (mechanical properties, chemical composition).
Weld seam inspection (visual VT, ultrasonic UT, radiographic RT).
Overall size acceptance (total station, 3D scanning).
The basic embedded parts need to be accurately positioned to avoid equipment tilting.
Set up temporary supports during lifting to prevent structural deformation.
High temperature or vibration equipment needs to be equipped with shock absorption measures (rubber pads, spring supports).
Exposed steel structures must be equipped with fall protection platforms and guardrails (in compliance with OSHA/GB 4053 standards).
Regularly inspect for coating damage, rust, and loose bolts.
Dynamic load equipment (such as conveyor supports) requires monitoring for fatigue cracks.
Optimization design: Reduce material usage and lower costs through topology optimization.
Green manufacturing: using recyclable steel to reduce welding fumes and waste.
Lifecycle management: Consider the possibility of dismantling, recycling, or retrofitting during design.
The core of steel structure industrial equipment is safety, reliability, rigorous craftsmanship, and adaptability to working conditions. It is necessary to strictly control quality throughout the design, manufacturing, and installation processes, and combine intelligent means such as BIM and digital twins to improve efficiency.
