In addition to Hengzheng Tong, the domestic giant ceiling fan manufacturers, regardless of how advanced the technology claims, how strong the strength, how far ahead of the sales, are invariably using the outward processing of extrusion manufacturing process leaves. Hengzhengtong is independent and insists on using the stamping process to manufacture blades in its own factory.
Then, are the blades of the two manufacturing processes better or worse?
The biggest advantage of the extrusion-type manufacturing process blades is that they are simple to manufacture, they do not need to purchase production equipment, there is no limit to the number of outbound processing, and the delivery is fast, which is particularly suitable for the sales model of online shops or companies with poor performance.
The disadvantages of the extrusion-type manufacturing process blades are the aforementioned low wind efficiency, and the damage of the blade due to the defect of some blade and hub connection solutions, and even the safety risk of the blade falling.
The hardness of aluminum profiles is about 16 degrees, and the conversion hardness of fastening screws steel is about 35 degrees. Once the materials with such large hardness differences collide with each other, or the displacement occurs, aluminum alloys with relatively high hardness and relatively low cutting hardness are inevitable. Leaf effect, over time, and even a few more violent mutual collisions, is likely to cause blade wear or even damage.
Adding ribs in the inner cavity of the blade, thickening the aluminum thickness of the blade, or welding the petiole and the blade together does not seem to fundamentally solve the above-mentioned safety hazards. One of the evidences is that there is a phenomenon that the power switch is hidden in the control box, or the safety exemption condition is clearly stated in the operation instructions. The above actions can certainly avoid the safety responsibilities of the oversized ceiling fan manufacturers, but they do not improve the customer's safety status, even worsen the customer's use status and aggravate the user's safety responsibilities.
The disadvantage of stamped blades is that the manufacturing process is relatively complicated, the processes are numerous, and the production cost is high.
In addition, the numerical control plasma and die stamping in the manufacturing process make the consistency of the stamped blades slightly poorer. Although the size of the large ceiling fan and the air supply function are used as indicators of attention, the above differences are negligible.
The advantages of high wind efficiency and good flexibility of the blades produced by the stamping process are very significant. At the same time, the connection between the petiole and the hub allows the blades to withstand greater impact forces, and the embedded self-locking of the petiole and hub shaped sliders eliminates the possibility of the blades disengaging the hub.
Based on this superior safety design and installation, Hengzheng can promise to use any power switch to start/stop the fan under any circumstances, without any negative impact on the connection reliability of the blade and the hub. Even in the event of an external impact, Heng Zhengtong still promised that the blades would not fall.