Heat Treatment Includes Participation Hardening

Only a month ago the US Pentagon have decided to cancel the ad as there was not a single reply for 5 years!!

Meanwhile, true advanced technological advancements are being accomplished by the newly established hardware industry in India and the Far-East, namely China. The technology is extremely intricate with the requirement for molecular technologies in addition to advanced materialogy science.

As an example - magnetic disk/platters is a circular aluminum disk, similar in shape to a normal cd or dvd, with surface coated with chrome oxide based coating with the sole exception of the read/write arm-head parking zone. In fact, high precision of disk surfaces and the heads causes them to "stick" to each other because of molecular attraction forces. To prevent that effect, manufacturers often use special laser serrations in the zone of contact between the heads and the platters.

The disks demonstrate specific magnetic properties owing to their coating of chrome oxide base (magnetically active substance) or cobalt layer applied using vacuum deposition. Such coating is characterized by robust hardness and greater wear resistance.

While, sales myths are circulating among RAID Data Recovery sales representatives in the USA &amp; Western Europe, advanced data recovery technologies have predominantly been emerging from the Far-East, the former Eastern Block countries &amp; India.

Meanwhile, the new hardware industry developed in mainland China is expected to boom even further. This is due to the announcement that the investment in the hardware manufacturing industry will be tripled. Knowing the Cassette Tape

Cassette tapes are produced of a polyester type plastic celluloid with a magnetized coating. The gamma ferric oxide (Fe2O3) was the basis of the original magnetized stuff. About 1970, a doping cobalt volume procedure with a double-coating method to heighten overall tape output levels was developed and introduced by 3M company. This merchandise was commercialized as 'High Energy' under its Scotch brand of recording tapes. The tapes tagged with a 'low-noise' label are usually not that costly. However, these 'low-noise' tapes are not for high frequency reception.

Some Noted Facts

The chromium dioxide or the CrO2 was introduced by DuPont, the inventor of the particle, and the inventor of magnetic recording (which is the BASF), and then coatings using magnetic iron-ore or the Fe3O4 were developed in a try to approach the audio quality of vinyl records (like the Audua of TDK). These said developments also happened in 1970 as well. The TFK introduced Avilyn or the cobalt-absorbed iron oxide in 1974 and was demonstrated very productive. Eventually pure metal motes (as opposed to oxide formulations) were prefaced in 1979 by 3M subordinate the trade name Metafine. The tape coating on most Cassettes consist of Ferric Oxide and Cobalt mixed in varying proportions and sold today as either 'Normal' or 'Chrome' (and using various processes); there are very few cassettes on the market that use a pure (CrO2) surfacing.

Sound Quality

Simple sound recorders are designed to process with regular ferric preparations. High fidelity tape decks are commonly built with switches or detectors for the several nonparallel and leveling requirements for high performance tapes. The most common, the IEC Type I or the iron oxide tapes, use 120 µs playback equalization, while the IEC Type II or the chrome and cobalt-absorbed tapes require 70 µs playback equalization. anilox rolls