福建SIDE KEY

Side keys are the most frequently used parts in mobile phones. If the side keys have problems during production, it is likely that the buttons will not work properly. This is a very serious situation. Imagine that one in ten thousand defective rate. If the new Apple models are shipped in tens of millions, it will produce a bad experience for thousands of users. Such a highly concerned brand is most likely to spread if it has a bad impact, For Apple, the loss is incalculable, so well-known brands will pay for the full inspection. Fuchi reached more than 3000 people during the peak period to fully inspect the products and ensure the quality.

Although the parts are small, there are many full inspection tasks, which need to detect the length, width, height, shape, flatness and other dimensions. Many large enterprises do not want to use manual detection, because manual contact detection is prone to quality problems, so the current MIM powder metallurgy enterprises are basically turning to automation. Therefore, Lianyungang Fuchi Intelligent Manufacturing Co., Ltd. has set up an electronic inspection workshop for CCD size and appearance. At present, there are 26 CCD detection machines.

The design of side keys should take into account the density, structure, wear resistance and other performance advantages, and pay attention to the appearance and customer experience.

Advantages of MIM in manufacturing mobile phone parts:

1. High efficiency, good at mass production of batch parts

MIM technology uses molds. Because of the high degree of production automation, its service life is equivalent to that of engineering plastic injection molding tools. Because of the use of metal dies, MIM is suitable for mass production of parts.

2. More refined parts

Alloying has good flexibility, wide application range of materials, the density of products reaches 95% - 99%, the internal organization is uniform, without internal stress and segregation, the surface finish is good, the precision is high, and the typical tolerance is ± 0.05mm.

3. Substantial energy and material conservation

MIM can use almost all metal materials. Considering the economy, the main application materials include iron based, nickel based, copper based, titanium based metals or alloys. Generally, the utilization rate of metal processing and molding is relatively low. For example, the utilization rate of raw materials for the metal shell of LeTV MAX mobile phone is less than 10%, and most of the aluminum alloys become debris. MIM can greatly improve the utilization rate of raw materials, which is 100% theoretically.

4. Structural parts with highly complex structure can be formed

Generally, the tolerance accuracy of ± 0.5% can be achieved with MIM, and higher dimensional accuracy can be achieved with other processing methods. Basically, all structures that can be realized by injection mold can be applied to MIM.

5. Environmental protection and safety

It is pollution-free and can realize continuous mass clean production. It is a near net forming technology and can effectively avoid material waste.

6. More material choices

Most metal materials can be used in MIM. In consideration of economy, the main application materials include iron base, nickel base, low alloy, copper base, high-speed steel, stainless steel, gram valve alloy, hard alloy and titanium base metal.