The materials and manufacturing processes of a jib crane directly determine its load-bearing capacity, service life, environmental adaptability, and operational stability; different operating conditions impose vastly different requirements regarding materials, anti-corrosion treatments, and structural design. Standard industrial workshops, cleanrooms, outdoor environments, and humid or corrosive settings each require specific material specifications and manufacturing standards to ensure long-term, stable operation.
Standard, dry industrial workshops represent a general operating environment suitable for jib cranes made of ordinary carbon steel. The main beam and pillar utilize high-quality Q235B carbon structural steel, a material offering excellent toughness, high strength, superior weldability, and outstanding cost-effectiveness, fully meeting the mechanical load-bearing requirements for light-duty lifting equipment. Manufacturing involves integral welding, resulting in smooth, full weld seams free of porosity or cracks; post-weld stress-relief annealing eliminates structural deformation and residual stress issues. Surface treatment employs a multi-layer anti-corrosion process—sandblasting for rust removal followed by epoxy primer and a topcoat—effectively resisting common workshop dust and mild oxidation. Suitable for general applications such as machining, hardware assembly, and standard warehousing, this represents the most widely used material and process solution in industry.
For cleanrooms and precision manufacturing environments, jib cranes made of aluminum alloy are mandatory. The main structure utilizes 6061 aerospace-grade aluminum alloy subjected to age-hardening treatment, offering key advantages such as light weight, high strength, oxidation resistance, rust-free performance, and no dust shedding; this completely eliminates the risks of rust-generated dust and contamination associated with carbon steel equipment. The structure is created via modular extrusion, resulting in a seamless, smooth surface that resists dust accumulation and facilitates easy cleaning and sterilization. Transmission components utilize stainless steel and specialized clean-environment grease, ensuring operation free from oil stains and dust, as well as low noise levels; this makes the equipment ideal for high-standard clean environments such as pharmaceutical production, food processing, precision electronics assembly, and cleanroom laboratories. Additionally, the lighter weight of the aluminum alloy reduces the operational load and energy consumption while extending the equipment's service life. For outdoor, open-air, and humid or corrosive operating environments, high-strength anti-corrosion carbon steel combined with specialized anti-corrosion treatments is required. The main structure utilizes Q355 low-alloy high-strength steel, which offers superior flexural, compressive, and impact resistance compared to standard carbon steel, making it suitable for complex outdoor conditions involving wind, rain, and temperature fluctuations. Hot-dip galvanizing is applied to the surface; compared to standard painting, this process ensures stronger coating adhesion and superior resistance to acids, alkalis, rainfall, and intense sunlight, effectively withstanding outdoor oxidation, rain-induced corrosion, and wind-blown sand erosion. The electrical control system features a sealed, waterproof, dustproof, and rainproof enclosure, and waterproof insulated cabling is used throughout; additionally, protective guards are installed on critical components such as the slewing mechanism and motor. For chemical processing or coastal environments with high salt-spray corrosion, an additional fluorocarbon topcoat is applied to significantly enhance corrosion resistance, ensuring the equipment operates stably over the long term in harsh outdoor and corrosive conditions.
