Aluminum alloy foot size and technical requirements :
1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.
2. There should be no burrs or flash around the foot after it is formed.
3. Surface sandblasting: gray.
Aluminum alloy handrail frame size and technical requirements:
1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.
2. There should be no burrs or flash around the foot after it is formed.
3. Surface sandblasting: gray. Aluminum alloy writing board size and technical requirements:
1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.
2. There should be no burrs or flash around the foot after it is formed.
3. Surface sandblasting: gray.
Technical requirements:
1. The chair is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the back cushion and seat cushion fully conforms to the curve of the human body. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original position, and the appearance of the chair is simple and beautiful.
2. The basic center distance of the seat is 563±5mm, the side depth of the seat when opened is 716±5mm, the side depth of the writing board when opened is 770±5mm, the basic chair height is 1010±5mm, and the minimum row distance is 900mm.
3. Under the premise of ensuring the comfort of the audience, the back cushion height shall not exceed 1015mm to increase the sound reflection area of the chair backboard and improve the sound absorption of the seat; sound-absorbing holes shall be made on the seat bottom plate as needed to keep the sound absorption of the seat as consistent as possible at different occupancy rates.
4. Bottom-hidden writing board: The writing board connecting aluminum head and support plate are made of high-quality aluminum alloy material through integral die-casting. The writing board panel is made of ABS composite material through integral injection molding. The writing board is fixed by mechanical high-strength bolts, so that the connecting parts of the writing board become stronger with use and will not become loose. When opening and recycling, it must have a muffler function and no rebound force or noise should occur.
5. The fabric is made of high-grade knitted fabric and has been treated with anti-static and anti-moth treatment. It feels comfortable and will not wrinkle, break, pilling or fade after long-term use.
6. The seat foams are all polyurethane cold-foamed high-resilience shaping sponges. The seat sponge dimensions are: length 480±10mm, width 490±5mm, height 60±10mm, sponge density 50-55KG/M3, back sponge dimensions: length 480±5mm, width 740±5mm, height 140±5mm, sponge density 40-45KG/m3, high strength, good resilience, and unique formula make the foam antibacterial and can effectively kill pathogens such as Escherichia coli.
7. The seat bracket steel is made of high-quality cold-rolled steel, and the welded parts are welded by robots with high welding quality. The surface is degreased, cleaned, rust-removed, cleaned, phosphated, cleaned, passivated, electrostatically sprayed with powder, solidified, cooled, and then electrostatically sprayed with 30 microns of epoxy resin to ensure that the paint film will not rust after the 72-hour salt bath corrosion resistance test.
8. The seat armrests are made of high-quality imported oak solid wood, with curved shapes, no deformation or cracking, and the armrest dimensions are: length 395±2mm, width 55±2mm, and height 33±2mm.
9. The seat adopts a damping return mechanism, with two-level buffering that is fast at first and then slow, so that the seat can return to its position within 3 seconds and has an escape silencer function. Rubber pads are added to the collision part of the seat to prevent collision and reduce noise, so that the seat opens without noise and returns slowly without impact.
10. Seat back inner and outer panels: Made of high-quality high-density hardwood multi-layer boards, cold-pressed and molded by molds, non-fading and anti-deformation. Back outer panel specifications: length 760±2mm, width 485±2mm, thickness 15mm. Seat outer panel dimensions: length 440±2mm, width 475±2mm, thickness 15mm. Back inner panel: Made of high-quality plywood, molded by mold bending. The appearance is arc-shaped, beautiful and elegant, with curvaceous beauty. Back inner panel dimensions: length 688±2 mm, width 485±2mm, thickness 6 mm. Seat iron frame: Made of high-strength high-quality carbon steel plate, stamped, bent and welded, and 5 2.5mm diameter S-shaped snake springs are added to ensure the comfort, firmness and long-term use of the seat without trouble or abnormal noise. Dimensions: length 420±2mm, width 410±2mm, height 56±2mm.
11. Aluminum alloy handrail frame: Made of high-quality aluminum alloy material through die-casting, it has a built-in hidden writing board that can be opened and recycled, and ensures that the writing board has enough space to move around so that it will not collide with the handrail frame when it is opened and recycled. The aluminum alloy handrail is ≥50mm wide and weighs ≥2.9KG. The handrail surface is designed with a curved surface to ensure the full beauty of the product.
12. Aluminum alloy standing feet: The front foot plate, support plate and bottom foot are all made of high-quality aluminum alloy material through integral die-casting. The front foot plate is equipped with a damping hydraulic gas rod mechanism to achieve the force unloading effect, so that the force of the seat return device is on the aluminum alloy front foot plate, which increases the service life of the seat.
13. The seat is fixed to the ground with hidden pressure-explosive screws, and the exterior is specially designed with a plastic dust cover to ensure that the chair legs are smooth and beautiful while preventing dust accumulation and facilitating cleaning.
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