Hard disk drive is a hardware component that stores data and contain secondary magnetic disk.
Hard disc was first invented by IBM engineers, Reynold Johnson in 1956. Those first hard disc consists of 50 disks measuring 2 feet (0.6 meters) with a rotational speed reaches 1200 rpm (rotation per minute) with a storage capacity of 4.4 MB .
Hard disks today there are only 0.6 cm wide with a capacity of 750 GB. Largest capacity hard discs currently reaches 3 TB with a standard 3.5-inch size.
If opened, seen the hard disk on the end bertuas arm attached to the rotatable disc
In China, the process of making the hard drive is very tight, even specialized workers should dress when entering the room of production due to the distance between the parts of a hard disk platter with a small head, only a hundred thousandth of an inch, the distance is smaller than dust.
The following is the process of making the hard drive:
production process takes place, the employees dressed anti-dust
Production room conditions, which partly uses robotic machine and a little wear some employees
Operation of the machine must be in the underlying course professionally
Disks, magnetic heads, liquid bearing (FDB) motor, these parts must be assembled in a clean condition and installation of the hard disk must have the appropriate pressure
Tool carrier disk platters that can hold 25 disks on the run by the robotic arm of the hard drive machine unit
It is the arm of the robot, automatic movement, all without the intervention of human labor
The robot arm is equipped with a liquid bearing motors basic disk (the disk prior to installation). The robotic arm will automatically adjust the horizontal position.
Hard drive head assembly process is done with precision on disk
After all the parts are assembled internal hard drive, the hard drive is closed and sealed, this process is done automatically by the machine
The testing process ensures not accept static electricity from the outside, with a plexiglass cover the insulation in the glass, this process is done by sampling and very tight.
After that, the bottom covered with foam board, especially to prevent shocks and protect the internal parts of the device
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