Office Chair Processing Steps

The processing steps for office chairs typically include the following:

1. Design and Raw Material Preparation Complete the design of the office chair based on market demand and ergonomic principles, specifying its shape, materials, and functional parameters. Subsequently, prepare raw materials such as wooden boards, metal tubes, high-resilience cold-foamed sponge (density 40-60kg/m³, resilience rate ≥60%), fabric or leather, as well as functional accessories like hydraulic cylinders and casters. Some high-end products utilize laser cutting or CNC punching technology to process metal frames, enhancing precision.

2. Cutting and Processing Cut wooden boards and metal tubes into specified shapes and sizes according to design drawings. Wooden boards are smoothed and edge-treated using planers and milling machines; metal tubes are drilled for mounting holes. Some metal components undergo pre-treatment such as pickling and phosphating for corrosion resistance, preparing them for subsequent coating.

3. Assembly and Welding Connect the cut metal tubes into a frame structure through welding, reinforcing critical areas (such as the support for the seat adjustment mechanism) with steel bars for stability. Then, install accessories like armrests and seat brackets, ensuring secure connections and compliance with design angle requirements.

4. Processing and Coating Sand the seat wooden board until the surface is smooth, then spray an environmentally friendly paint layer to enhance gloss and protective properties. Metal components are coated using chrome plating or electrostatic powder coating, with a coating thickness controlled between 60-80μm, and verified for corrosion resistance through a salt spray test lasting over 200 hours.

5. Spring and Support Structure Installation Hang S-shaped steel springs on the seat frame to form a suspension net, inserting metal rods horizontally to prevent deformation. Some products fill high-resilience sponge as the core of the seat cushion, ensuring it does not collapse easily during prolonged use.

6. Upholstery and Detail Processing Wrap the sponge with fabric or leather and secure it to the exterior of the seat to create the cushion and backrest. Components like the backrest and side panels require fabric cutting and stitching, with pleats formed at corners for decorative patterns. The fabric must pass the Martindale abrasion test (>40,000 cycles) and meet the GB 8624-2012 B1 flame retardancy standard.

7. Final Assembly and Functional Component Installation Install a sliding plate assembly for forward and backward adjustment of the seat cushion, and assemble a hydraulic cylinder to support height adjustment and 360-degree rotation. Connect an aluminum base with silent casters, and finally install a headrest and adjustable armrests to complete the overall structure assembly.

8. Measurement and Adjustment Use professional instruments to inspect the seat's deflection, height error, and structural robustness, ensuring compliance with ergonomic standards. For example, the angle between the seat surface and the horizontal plane should be controlled between 3-5 degrees, and the backrest tilt angle should range from 100-110 degrees.

9. Quality Inspection and Packaging Conduct static load testing (applying 160kg force to the seat surface for 1 minute), 100,000-cycle fatigue testing, and stability testing to verify product durability. After passing inspection, package the product using shock-absorbing materials and label it with model and production date information for transportation and sales.