Doogee HITMAN DG850 Design Review
The most dazzling side, the ultimate process
HITMAN DG850 is an artwork that is more than the sum of the latest technology. The polished zinc-aluminum alloy metal frame and magnesium-alloy exquisite frame design create a solid body. The ultra-slim screen frame, like a work of art, looks just plain stylist.
40 processes technology, 193 precision step process
With the 40 technology processes and 193 precision steps process, the frame forms gradually. The design, the precision machinery, the production process, the fusion of engineering and art, the pursuit of the ultimate precision and quality gives a piece of 309g- steel a new life. After 32 hours of crafting, one exquisite 19g frame emerges.
In the middle of the piece of steel, some holes are drilled. These holes are used for fixing components in subsequent processes. In the next step, using a 100 tons of brute force hydraulic press to forge it, the preliminary appearance of the hold piece is given. And then the steel is put through a annealing treatment process that will make it tough and resistant. The last step, re-forging and cleaning, The entire process has a total of eight steps.
58 milling machines, 8 CNC precision forging steps. First they focus on shaping the border , then they cut off the antenna slot, they make a small inclined planned and they finish off other parts. At last, a hole for the speakers and a hole for the 0.6mm headphone jack. The higher precision of the CNC machinery is, the better the phone´s quality. After each step, the CNC will be rounded from "cleansing “, “deburring” and ” cleansing", to ensure that no residue can interfere further processes.
3 surface -polished processes
First, intense grinding, processing the entire frame´s outer surface. Then the piece is cleaned with polishing wax to remove residues. Finally, the polishing process continues until the surface turns into a mirror.
Sandblasting to give the surface a baby- skin-feeling
In order to get the best hand feeling we could, we conducted a six-month experiment testing the sandblasting process, we tested seven kinds of sand, trying four suppliers and trying more than 100 blasting parameters. At first the piece is coated with ink, a protective layer will appear after putting it through and oven. Then is blasted to smoothen the surface. Subsequently, powered by compressed air, several blasting guns are used to round zirconium-silicon on the border until the phone gets a nice touch feeling. In order to make sure that each DOOGEE phone has the same touch feeling, we change the sand once every two days, with is more frequently than other manufactures do.
Laser cutting to complete the frame
Finally, a laser is focused where the frame and the plate are connected to solder them to complete the overall frame structure and to separate the frame and the waste. Then technicians hand-polish the pieces to remove burrs and residues of each segment. A triple quality inspection is done and then, the final product is ready to go from the factory to customers’ pockets.
