Metal enclosures has become a lot of more high-end notebook standard configuration, its unique texture and shape, you can make it look more grade. But the notebook metal material is not simple, different brands of notebook metal materials are different, which is also used by its manufacturers of processing technology. Xiaobian today and everyone to understand about five common notebook Metal enclosures.
At present, from the material of the metal characteristics and price considerations, magnesium and aluminum materials are the most common part of the notebook Metal enclosures, in general, in order to make up for magnesium and aluminum two metal defects, but also need to add some other elements, To make it more in line with the requirements of the notebook shell.
1, aluminum-magnesium alloy, rust-proof aluminum alloy, texture is better
Now most of the notebook Metal enclosures are used aluminum-magnesium alloy, the difference is that its formula and production process is different. In general, this material is added in the aluminum about 5% of the magnesium component, there are less than 1% content of chromium, iron, silicon, copper, zinc and other materials, this will be classified as anti-rust aluminum alloy, Better texture. The main notebook models are MacBook Pro and MacBook Air.
Aluminum and magnesium alloy in the chemical stability of the performance is quite good, at the same time, rich metallic luster, the appearance is quite attractive, but also easy to post-cutting, drawing and other processing, coupled with reasonable prices, which allows most notebooks What manufacturers use. However, aluminum as the substrate, so that the high density of aluminum-magnesium alloy, reaching 2.6g / cubic centimeter, and the strength of the performance is not particularly prominent, which makes aluminum-magnesium alloy shell to have a certain thickness to ensure its Strength, the weight of the entire shell have a certain impact.
2, magnesium alloy: light weight slightly worse
This magnesium alloy and the first material is different, it is mainly magnesium as the substrate, the main such as AZ91D alloy, is the magnesium content of up to 90%, aluminum 9%, zinc content of 1%, plus a very small amount Manganese, silicon, iron and other metal alloys. Representative models: Lenovo YOGA, Dell Latitude 6430u
As magnesium as a substrate, magnesium aluminum alloy density significantly reduced, only 1.8g / cubic centimeter, while the strength and aluminum and magnesium alloy performance is similar, which makes the shell weight greatly reduced. However, magnesium alloy in the appearance of the texture slightly worse, gray, coupled with the lack of magnification of magnesium performance, so most manufacturers use casting processing, and then the surface paint, or the use of skin-friendly paint to improve the texture The
3, magnesium lithium alloy: super light metal
This magnesium alloy by adding 40% of lithium in the magnesium metal, because lithium is only 0.5g / cubic centimeter density and can float on the surface of the metal, so the overall alloy can reach the density of only 1.36g / cubic centimeter The ultra-light metal, only half the weight of aluminum-magnesium alloy. In this way, the light shell can reduce the weight of hundreds of grams. Representative models: NEC Lavie Z
As the lithium metal element is more expensive, and magnesium and lithium alloy processing difficulties, magnesium alloy shell also need to be the appropriate external treatment, want to popular, the difficulty is a bit high.
4, Dura aluminum: aircraft alloy material
Dura Aluminum was developed in 1903 as the first batch of aluminum alloy products, which consisted of more than 90% of aluminum, about 4% of copper and a small amount of magnesium and manganese, initially consisting mainly of For the aircraft airship manufacturing and an alloy, not only the strength and surface hardness of Duara aluminum have a certain increase, which also allows the shell thickness can be reduced, Samsung 9 series has created the thinnest notebook thickness records. However, after adding copper, the corrosion resistance of the alloy surface is also worse, so, Dura aluminum is also necessary to carry out exterior treatment. Representative models: Samsung 9 series
5, titanium alloy: called "diamond" strength
ThinkPad Z61T, Apple POWER Book G4 on the use of titanium alloy shell, although far away for many years, but still a lot of people think that titanium is the most high-end notebook shell material. Among them, POWER Book G4 Titanium Titanium Titanium content of up to 95%, plus a small amount of other metal elements, which also allows it to have a very high strength, the Mohs hardness second only to diamonds, plus Excellent corrosion resistance, pure performance from the point of view, titanium alloy is indeed excellent. Representative models: ThinkPad Z61T, Apple POWER Book G4
However, the titanium alloy is not only unusually expensive, and its 4.5g / cubic centimeter density is relatively high, coupled with titanium in the cold treatment, not only easy to damage the processing equipment, alloy strength will be significantly reduced. Therefore, the titanium alloy notebook can only flash in the pan, devoid of history.
In summary, although the above five are the major notebook manufacturers are using the common material, but because of the processing methods and the proportion of alloy formula differences between the major manufacturers of notebook shell is still very different, everyone When you buy a laptop, be sure to pay attention to this point.
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