Mobile phone shell of the ever-changing, what is the best?

These days, Samsung S6 edge of the evaluation out, the parties praise sound. In fact, from the hardware level, Samsung is only a routine hardware upgrades, compared to the previous generation of products and nothing special. And from a big plastic ridicule to a marvel, but Samsung changed the design, changed the shell material.

These years, from ordinary ABS plastic to high-tech carbon fiber, mobile phone shell ever-changing, but what is the best? Let's make a review.

Plastic Times--abs and PC

In the era of functional machine, we use most of the mobile phones, with ABS plastic, ABS is acrylic-butadiene-styrene copolymer abbreviation, this material cheap, easy to process, easy to do surface treatment (electroplating on a layer of metal, etc.), is the most commonly used materials.

But this material strength is low, does not withstand the high temperature, wants the handset to need the strength, must have the certain thickness (when had not had the metal skeleton this concept), but this lets the handset be difficult to be frivolous, therefore that year's handset 20mm, clamshell handset 25mm's also not rare.

In addition, this material once the surface paint off will appear very low-grade, so high-end mobile phones are generally cautious choice, now the mobile phone has been used very little.

PC is the abbreviation of polycarbonate, although the Nokia boast is tall, but in fact we use the bucket is this material. The strength of this plastic is better than abs, the same strength can be compared to the ABS plastic thinner. Heat resistance is better than abs.

However, this material is not easy to paint, surface treatment is also difficult, generally used in a slightly higher grade of mobile phones.

A plastic is always difficult to achieve the desired effect, so people get out of the double injection, a mobile phone with two kinds of plastic, inside with a, surface with a better transparent plastic, so that the color is sealed under the transparent plastic, mobile phone touch and visual feeling will be better.

Overall, the plastic mobile phone cost is low, processing is simple, but because the strength of the reason will be heavy, double injection can not do too thin. It didn't matter to the previous function machines, and in the age of big-screen smartphones, people started looking for better materials.

Metallic materials--stainless steel and aluminum alloy

Since the plastic strength is too thick, to be thin to choose a high strength, this is the metal material. But the metal material has the shielding, affects the signal.

The solution is to increase the strength of the metal skeleton, the shell or glass or plastic. (Hammer T1 for better signal, with glass fiber composite skeleton)

Do not think of steel and aluminum alloy simple, steel numbering has more than 100 kinds, stainless steel also has dozens of kinds, aluminum alloy from 1 to 9 Series, each department has several models.

Mobile phone This kind of strength is not very high, usually choose 304 or 314 stainless steel and 6 series aluminum alloy.

In terms of strength, these models are not the best choice. But 304 of the austenite is easy to soft processing, no magnetism, the price is also cheap, so millet 4 used. 6 series of aluminum alloy although not as strong as 7 series, but welding, coloring, molding performance is good, integrated processing cost is low, so Apple used.

Later, as technology progressed, people gradually found the antenna arrangement, the full metal shell of the mobile phone also has, the latest iphone 6 is. This kind of mobile phone's grade is much higher than the plastic.

Glass Materials-Corning and Sapphire

Whether it is plastic or metal, the hardness is not too high, if there is no protection cover can easily draw small scratches.

So jobs used glass on the iPhone4. The advantage of glass is high hardness, especially sapphire glass, in daily life can hardly meet anything more hard than it. The softer, Corning Glass is just a little bit more protective (foil) and can make a few years of mobile phones complete as new.

The advantage of glass is the signal, but there are disadvantages. On the one hand, most of the glass is flat, to be processed into an arc, whether it is hot bending or CNC grinding is very time-consuming. Phone back cover is to need arc to fit hand type, iPhone4 very cut hands, and hammer and millet note in order to process this kind of arc glass, have paid the cost of capacity and costs.

Glass also has a problem is the impact of poor, simply is not resistant to fall, it is easy to smash, especially the high hardness of sapphire glass. This makes the application of glass has limitations, only a few mobile phones with glass.

Tall material--carbon fiber, titanium

Under the same mass, the strength of titanium alloy is better than that of ordinary stainless steel and aluminum alloy, the titanium alloy is lighter, stronger and more corrosion resistant. is theoretically a better material.

But titanium extraction is very troublesome (titanium reserves are not low), the cost is very high. And the processing is even more troublesome. Welding, cutting, stamping is not easy, handling the cost is very high.

So titanium phones only appear on high-end models or luxury brands.

Carbon fiber is strictly called carbon fiber composite, is the carbon fiber woven into cloth, and then add resin formed after the things.

This thing is lighter than metal and has a higher strength. Titanium alloys are not comparable, but they cannot be repaired once they are damaged. To replace the whole, and the cost is very high.

Therefore, mobile phone products are rarely used, Motorola used to do the back cover, and then some luxury brands used.

Ideal mobile Material

In fact, the use of mobile phones and aerospace is very similar to the requirements of frivolous, but also have a certain intensity. If the cost is not considered, the titanium alloy skeleton has the highest specific strength, while not afraid of corrosion suitable for mobile phones.

The front of the smartphone is mostly Corning Glass, this is not too much to say, but Corning Glass hardness is not enough, the feasible solution is to use vapor deposition method coated with a layer of high hardness diamond coating to prevent scratches. Apple has actually registered the patent.

The back of the material directly with the palm, from the handle angle leather is the most comfortable material, and leather is soft, below also need to have a base, the strength of light carbon fiber composite material is undoubtedly the ideal choice.