Introduction
In modern kitchen design, stainless steel press sinks occupy more than 70% of the market share due to their durability and aesthetic value. This kitchen equipment manufactured by precision drawing process combines the essence of materials science and mechanical engineering in its production process. This article will deeply analyze the 8 core manufacturing links of pressing sinks and reveal why this process can create product characteristics that are 3 times more impact-resistant than traditional handmade sinks.
Material selection: thickness determines fate
The die-casting process has strict requirements on stainless steel plates. The US ASTM A240 standard stipulates that 304/316 grade stainless steel must be used. High-quality manufacturers such as Dexing use cold-rolled steel plates with a thickness of 0.8-1.2mm. This thickness range can ensure ductility during stretching and achieve a compressive strength of 18kg/cm² .
Industry warning: Some low-priced products use plates below 0.6mm. Laboratory tests show that their impact resistance has dropped by 47%.
Intelligent cutting: digitalization enables precise forming
Modern factories use CNC laser cutting systems, which have an accuracy of ±0.05mm compared to traditional punching machines. The intelligent storage system of the Franke factory in Germany can automatically match coils of different specifications, and optimize the material utilization rate by 92% through AI algorithms (case reference: Franke official website technical white paper).
Double stretching: the mechanical art of deep forming
The first stretching uses an 800-1200 ton hydraulic press to complete 80% deep forming, and the second fine stretching uses a mold with a temperature control system. The Swiss Schock brand uses patented multi-layer mold technology to achieve a perfect 3mm radius for the R angle of the sink (technical description citation: Schock patent US20210178542A1).
Annealing Revolution: The Magic of Lattice Reconstruction
In a nitrogen-protected annealing furnace at 1150°C, stainless steel completes lattice reconstruction. Authoritative tests show that the corrosion resistance of products that have undergone standardized annealing has increased by 300% (data source: Materials Performance magazine). Industry leaders such as Kohler have achieved full automated monitoring of the annealing process.
Edge Precision: A Life-and-Death Contest of 0.1mm
Using the German TRUMPF CNC trimming machine and the visual inspection system, the edge tolerance is controlled at ±0.1mm. The US NSF certification requires that the radius of curvature of the sink edge must be ≤1.5mm to prevent bacterial growth (standard citation: NSF/ANSI 51-2022).
Functional opening: Precision calculation of fluid mechanics
The drainage hole adopts multi-stage progressive stamping technology, and Elkay’s patented Vortex Drain technology increases the drainage speed by 40% . The faucet hole uses a composite mold with ultrasonic detection to ensure that the installation flatness error is ≤0.3°.
Surface treatment: Nano-level protection revolution
The latest PVD coating technology can form a 5μm diamond-like coating, making the surface hardness reach 9H (Mohs hardness). Comparative tests show that the scratch resistance of the treated surface is improved by 80% (data source: Journal of Materials Processing Technology).
Environmentally friendly spraying: the last mile of sustainable development
Using German DuPont solvent-free powder coating, 95% material utilization rate is achieved through electrostatic spraying. European REACH certification requires VOC emissions <50g/L, and leading companies have achieved 100% recycling of production wastewater (environmental protection standard citation: EU Ecolabel certification system).
Conclusion
From cold-rolled steel plates to smart kitchen centerpieces, the manufacturing process of pressing stainless steel sinks perfectly interprets the precision pursuit of modern manufacturing. According to the 2023 Kitchen Equipment Satisfaction Survey, the service life of a standardized pressing sink can reach more than 25 years, and the maintenance cost is 60% lower than that of traditional products (data source: J.D. Power Kitchen Equipment Report). Choosing a pressing sink produced through a formal process is not only an investment in quality, but also a practice of a sustainable lifestyle.