How Steel Electric Wheelchair Reinforced Frame Ensures Long-Term Use

Frame strength is nonnegotiable, especially for users who require a wheelchair that is capable of sustaining years of daily use, heavy loads and rough driveways. The gold standard of durability has been steel electric wheelchairs. But not all steel frames are equal. The difference between a chair which will last five years and one which will last fifteen is a reinforced frame, in heavier gauge steel, strategic bracing, and heavy welding. At Ningbo Baichen Medical Devices Co., Ltd., we manufacture steel power wheelchairs with reinforced frames. Below are four ways our reinforced steel design ensures long-term reliability.

1.High-Gauge Steel Tubing Resists Bending and Fatigue

Standard steel wheelchairs often use thin-wall tubing to save weight, but this sacrifices long-term strength. Our steel power wheelchair utilizes high-gauge (thick wall) steel tubing in all load-bearing parts, the main frame, seat rail and axle brackets. High gauge steel can resist bending when heavy user weights (150-200+ kg) are applied and retain their form due to vibration over years due to daily travel. Where the finer steel may form micro cracks or be permanently sagging in 2-3 years, our reinforced frame is straight and true. It is this resistance to metal fatigue that enables a steel wheelchair to be used by a user over a decade or more.

Robotic Welding Ensures Consistent Joint Strength

It does not matter how strong steel tubing is, the welds have to work. Bad manual welding forms weak spots in which cracks begin. All steel power wheelchair frames are welded in our factory by employing robotic welding systems. Robotic welding provides uniform heat input, penetration and bead shape in all joints removing the inconsistency of human welding. The result is a frame where every weld is as strong as the surrounding metal. Destructive testing Randomly on production welds, we tear them apart and ensure that they are of minimum strength. This is what makes the chair safe after thousands of miles and years of usage; this integrity of the weld.

Reinforced High-Stress Areas for Daily Abuse

A well welded frame may fail even when the high-stress areas are not reinforced. Daily use applies forces to particular locations, the cross of the backrest and seat rail, the axle bracket (the entire weight of the user and dynamic loads of bumps) and the footrest hangers. We add gussets (triangular reinforcing brackets) at these important junctions in our steel power wheelchair. The axle brackets are not stamped, but forged. Footrest hangers are strengthened by using two walls. These reinforcements provide little weight but a significant increase in frame life. This difference will be immediately felt by users who have owned inexpensive steel chairs that have broken at the welds.

Corrosion-Resistant Coating for Wet and Coastal Environments

The only thing that can make steel weaker is rust. It is no use having a reinforced frame that rotten corrosion gnashes away on the inside. Our power wheelchairs made of steel are treated with multi layer anti corrosion, then degenerated, phosphated (zinc or iron) and then electrostatically powder coated at 80-100 microns thickness. This coating is chip resistant and is chemically bonded with the steel. We provide an optional zinc aluminum alloy finish to protect the product that provides 500 or more hours of salt spray protection to users in coastal environments (high humidity and salt air) or those who often go outdoors during wet weather. The reinforced frame is guaranteed to be strong throughout the life of the chair, not only during the initial few years because of proper coating.

Summary

Steel electric wheelchairs actually ensure long-term use through four reinforced frame features, high gauge steel tubing that resists bending, robotic welding for consistent joint strength, gussets and forged components at high stress areas, and multi layer corrosion resistant coatings. At Ningbo Baichen Medical Devices Co., Ltd., we actually manufacture steel power wheelchairs with reinforced frames in our 20,000 m² facility. With 60 frame processing machines, 3 American Binks painting lines, and 4 assembly lines, we deliver durability that lasts. Contact us today to invest in a steel wheelchair that will serve you for years to come.