Why does the FACE ID bracket specialize in “amorphous alloys”?

What is FACE ID?

That’s right, it’s the flow of mobile phones. It’s a face recognition authentication method used to replace Touch ID. It is equipped with an ambient light sensor, a distance sensor, and also integrates an infrared lens, flood camera and dot-matrix projection. A variety of configurations to build a user’s 3D face model together.
First come to feel the charm of FACE ID.

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The requirements of the FACE ID bracket are highly matched with the forming advantages of amorphous alloys. Comprehensive performance and indicators, amorphous alloys have almost become the only solution that meets the requirements.

Using amorphous alloy to form the camera bracket, compared with aluminum/zinc alloy die-casting and stainless steel powder metallurgy, it has obvious advantages in strength, size, mold, corrosion resistance and other aspects.

Element

details

Aluminum (zinc) alloy die casting

Stainless steel powder metallurgy

Liquid metal forming

Strength requirements

The internal components need to be protected, the local structure area is weak, and the strength requirements are high (estimated >800Mpa)

Yield Strength:

Aluminum alloy <400Mpa

Yield Strength:

Stainless steel 17-4~500Mpa

Yield Strength:

Liquid metal~1300Mpa

Size and flatness

Marking size: 60+ (close to the size complexity of the mobile phone frame), where the high precision requirements are ±0.03mm, and the flatness is 0.05mm

Need to assist the CNC to meet the size requirements, the flatness cannot be achieved, and there is a risk of deformation in the later use process

Need to assist the CNC to meet the size requirements, the flatness cannot be achieved, and it is estimated that it can reach 0.1mm

Mold forming can ensure that the key dimensions are formed at one time, and the flatness is kept within 0.04mm

Molding requirements

The front and back of the product have detailed features, thin wall, thin column requirements, no thimble, bumps, etc.

Die-casting mold: draft angle above 3°.

Injection mold: meet the normal injection requirements, the position of the thimble needs to be processed

Die-casting mold: It is difficult to demold, the weak position needs a larger draft angle of 5°, and the thimble is designed on the outside.

Profile

Cooperate with automated assembly requirements, reasonably define CCD capture requirements to ensure clear and consistent contours

Auxiliary fine blanking to ensure contour

Normal blank material to remove peaks to ensure contour

Understand current product requirements and mold design, Pifeng needs to assist CNC to ensure profile

preservative

Mobile phone industry standard salt spray requirements

After surface treatment

Salt fog>24 hours

Salt fog>24 hours

Salt fog>96 hours


Post time: Dec-08-2021