Integrated Housing Container Manufacturing
Integrated housing container manufacturing involves multiple key aspects such as material selection, structural design, enclosure construction, connection nodes, anti-corrosion treatment, and industrial production processes.
Material Selection and Structural Design: Container houses primarily use high-strength steel as the main framework, such as Q355B weathering steel, which has a yield strength approximately 30% higher than that of ordinary carbon steel. This allows for the formation of a self-balancing system, reducing the need for external supports. For example, Yiqi Company achieves a 15% reduction in material usage for a container with a length-to-width ratio close to 2:1 through rigid connections between corner fittings and side beams without additional reinforcement. Structural stability must comply with the GB50011-2010 seismic code. Leading enterprise products, such as Suzhou Zhongnan packing containers, exhibit a frame deformation rate of only 0.18% in simulated tests of 12-level typhoons and 8-level earthquakes, well below the industry threshold of 0.3%.
Enclosure Structure and Thermal Performance: The enclosure system employs a composite construction to enhance thermal insulation. For instance, a three-layer design of 'rock wool-air layer-aluminum-zinc plate' with rock wool thickness ranging from 75-100mm and a thermal conductivity below 0.040 W/(m·K), combined with a 5mm closed air layer, results in an overall heat transfer coefficient (U-value) below 0.5 W/(m²·K). This effectively reduces the risk of condensation in Inner Mongolia during winter and extends the lifespan of the steel structure.
Connection Nodes and Seismic Adaptability: For areas with a seismic design intensity of 7 degrees or higher, a dual-fixing mode of 'wedge-shaped lock + high-strength bolt' is adopted. The wedge-shaped lock has a 15-degree inclined surface that disperses horizontal shear forces through a self-locking effect. Shaking table tests show that displacement is controlled within 3mm, representing a 40% improvement in deformation amplitude compared to conventional welded nodes. Additionally, this design supports repeated disassembly and assembly, reducing construction waste.
Surface Anti-Corrosion and Lifecycle Management: The coating system utilizes a combination of 'epoxy zinc-rich primer (zinc powder content ≥ 80%) + polyurethane topcoat (hardness 3H)'. Through the sacrificial anode principle and protection against wind and sand erosion, it shows no red rust in salt spray tests for 1000 hours, supporting a 25-year service life for the main structure of the container.
Industrial Production Process: Container buildings integrate processes such as water and electricity pipelines and bathroom equipment into factory assembly lines through standardized design, requiring only lifting and module connection on-site. For example, a smart factory in Guangdong produces 50 steel structure modules per day with manufacturing precision controlled within 1-2mm, shortening the construction period by more than 60% compared to traditional methods.
