Question: As a hardware processing factory, how can we ensure the common quality of differentiated workpieces like earphone steel bars and stainless steel hinges under the same system?

Answer: Whether it's the millimeter-level precision steel bars for headphones or the stainless steel hinges that can bear a load of over a hundred pounds, their quality foundation stems from a standardized quality control system that runs through design, materials, and manufacturing.

Integrated Design and material Management

During the design stage, we fully consider the final application scenarios of the product. The steel bars of headphones pursue microscopic elasticity and precision, while stainless steel hinges emphasize macroscopic structural strength and durability. Although the demands are different, we share the same material database and supplier system. Whether it is the SUS301 stainless steel strip used for the earphone steel bars or the 304 stainless steel main body adopted for the hinges, they all come from well-known steel mills such as Baosteel and Taiyuan Iron & Steel, ensuring the consistency and reliability of material performance from the source.

Flexible precision manufacturing process

Our production line has a powerful flexible processing capacity.

For the steel bars of headphones, we use high-precision CNC rolling mills to control the thickness of the strips, ensure the cutting accuracy through patented cutting devices, and apply surface treatment processes such as precise wire drawing and fillet rounding to meet the dual requirements of consumer electronics for both aesthetics and functionality.

For stainless steel hinges, we use CNC stamping machines for punching and shaping, and adopt cold heading technology to manufacture the shaft core to ensure strength. For key components such as the shaft sleeve of the top and bottom hinges, we will embed rolling bearings and apply special material lubricating plates to achieve a silent and smooth experience of over 200,000 openings and closures.

Continuous innovation and cross-border application

We incorporate the exacting demands for precision in electronic products into the meticulous refinement of hinges. The understanding of the structural strength of heavy-duty hinges is also fed back into the structural optimization of the headphone steel bars. For instance, we have extended the modular and anti-fracture design concept of the earphone sliding arm to the adjustable and easily replaceable design of the hinge, enhancing the convenience of hinge maintenance. Meanwhile, we actively follow the cutting-edge design trends of stainless steel products, such as PVD color coating and micro-etching anti-fingerprint texture, to endow our customers' products with higher added value and market competitiveness.

Through this system, we ensure that different product lines, from consumer electronics to home building materials, can all enjoy the same strict quality control standards and technological innovation dividends.