What are the characteristics of embossed aluminum plate used in notebook computer shell and other fields?

By virtue of its unique surface texture and the characteristics of aluminum substrate, embossed aluminum plate shows multiple irreplaceable advantages in the application of consumer electronics such as notebook computer shell, and it also needs to adapt its characteristics to the scene. The following is a detailed analysis of its application characteristics from three aspects: core advantages, scene adaptability and potential precautions:

First, core application advantages: meet the core needs of notebook computer shell.

The notebook computer case requires extremely high materials such as "light weight, durability, appearance texture and functionality", and the characteristics of embossed aluminum plate exactly match these requirements, which are embodied in five dimensions:

1. Lightweight and structural stability balance

The density of aluminum is only 2.7g/cm³, which is much lower than that of steel (7.85g/cm³) and magnesium alloy (1.8g/cm³, though lighter, but with high cost). The embossing process is physical embossing (no additional materials are added), which can ensure that the shell is "light and thin" (in line with the portable requirements of notebooks) and at the same time improve the local rigidity through the "microstructure support" of surface texture-compared with smooth aluminum plate.

2. Scratch resistance and wear resistance: solving the core pain point of smooth shell

Notebook case is easy to touch the friction scenes such as desktop and backpack. Once the smooth aluminum plate is scraped, it will leave obvious scratches, while the concave-convex texture structure of embossed aluminum plate can improve the wear resistance from two aspects:

Physical level: only the "convex part" of the texture is stressed during friction, which reduces the direct contact area of the substrate surface and reduces the probability of scratches;

Visual aspect: even if the convex part is slightly worn, the "visual shielding" of the concave-convex texture can weaken the scratch marks, which is far superior to the "marking" of the smooth surface and prolong the "visual freshness" of the shell.

3. Appearance texture and personalization: enhance product differentiation.

Embossed aluminum plates can be customized by embossing dies (such as wire drawing pattern, litchi pattern, twill pattern, diamond pattern, fine frosted pattern, etc.) to create a variety of surface textures:

For example, "fine matte embossing" can present a delicate matte texture, avoid the problem of "fingerprint residue" of smooth aluminum plate (fingerprints are not easy to attach to concave and convex surfaces and are easy to wipe), and meet the needs of "daily cleaning convenience" of notebooks;

"Drawing embossing" can simulate the advanced feeling of metal drawing, and at the same time avoid the "directional scratch" of traditional drawing process through the regularity of embossing, giving consideration to aesthetics and practicality;

Embossing can also be combined with anodizing, spraying and other processes (such as anodizing dyeing after embossing) to realize the dual personalization of "texture+color" and help brands create differentiated products (such as rough texture of game books and delicate texture of light books).

4. Non-slip and grip comfort: optimize the use experience

Notebook computers need to be opened and closed frequently, and the micro-concave surface of embossed aluminum plate can improve the friction between hand and shell;

When opening and closing with one hand, the palm is not easy to slip when touching the embossed area, so as to avoid the machine falling down due to the smooth surface.

When carrying (such as holding a notebook), embossing can also reduce the sliding of the shell on the surface of clothes and improve the holding stability, especially for large-screen notebooks with a size of more than 14 inches (the weight is relatively higher and the anti-slip demand is more prominent).

5. Strong machining adaptability: compatible with the complex molding of notebook shell.

The embossed aluminum plate can be formed by conventional metal processing techniques such as stamping, bending and CNC milling, and can adapt to the complicated structures such as "curved surface transition, corner arc, interface opening" of notebook shell;

The embossing process can be completed in the cold rolling stage of aluminum plate (embossing first and then forming), or local embossing after forming, with high flexibility;

Compared with the plastic case (easy aging and poor high temperature resistance), the embossed aluminum plate can withstand the heat dissipation temperature of the CPU and graphics card inside the notebook (the melting point of aluminum is 660℃, and the long-term use temperature resistance is far better than ABS plastic), and it is not easy to deform or age and yellow due to temperature changes.

Second, the scene adaptability: embossing selection of different notebook types.

The texture design of embossed aluminum plate should be adjusted in combination with the positioning of notebook (light notebook, game notebook and business notebook) to realize the accurate matching of "characteristics and scenes";

The reasons for the adaptation of notebook type core requirements and embossing type

The thin and light notebook is portable, fingerprint-proof, and has a fine texture. The fine texture of the fine frosted grain and the light brushed grain does not increase the thickness, and the fingerprint-proof effect is good, which is in line with the "simple and exquisite" positioning of the thin and light notebook and is light in weight.

The game book is resistant to falling, scratching and visual impact. The texture of litchi grain and deep diamond grain has a strong sense of bump, better scratch resistance and impact resistance (it can buffer slight collision), and the rough texture also conforms to the "hard core" style of the game book.

The business book is low-key, high-grade, abrasion-resistant, easy to clean, and the matte embossed texture is low-key and unobtrusive, which has both scratch resistance and business texture, and the matte surface does not reflect light in office scenes (such as conference room lighting) and has a good visual experience.

Third, potential precautions: adaptation and avoidance in application

Although the embossed aluminum plate has obvious advantages, it should be avoided in the application of notebook shell:

Slight influence of texture on signal

The notebook case needs to reserve the signal channel of wireless network card (Wi-Fi/Bluetooth) and 5G module. If the embossed area covers the position of signal antenna, too deep metal embossing (especially closed texture) may slightly shield the signal-it needs to be avoided by "local non-embossing", "texture hollowing out" or adjusting the antenna position. At present, the mainstream design has been optimized by simulation test, and the influence can be ignored.

Cleaning details: avoid texture dust accumulation

Concave-convex texture may accumulate fine dust more easily than smooth surface (such as debris falling from keyboard gap), so it is necessary to choose "light texture" or "easy-to-wipe texture" (such as bumps with circular arc transition instead of sharp grooves), and it is recommended to match it with notebook case cleaning cloth (soft fiber material to avoid scratching the texture).

Cost and mass production adaptation

Customized embossing die (especially for complex texture) has a high initial investment and is suitable for mass production of notebook models; Small-batch customization needs to weigh the mold cost, or choose industry-wide embossing (such as standard fine matte grain) to reduce the cost.

summary

The core value of embossed aluminum plate in notebook computer case is to combine the lightweight and durability of aluminum with the scratch-resistance, fingerprint-resistance and personalization of embossing, which not only solves the pain point of traditional smooth metal case, but also has more texture and durability than plastic case. By accurately matching the positioning of notebook (thin/light/game/business), choosing the texture type and avoiding the details such as signal and cleaning, it has become one of the mainstream materials of high-end notebook shell (for example, many models of Huawei, Lenovo, Dell and other brands adopt embossed aluminum plate shell).