Dacro Process: Zero Pollution + Green Manufacturing, Leading the New Trend in Surface Treatment

When fasteners in industrial manufacturing products malfunction and become unusable due to oxidation and rusting, or when the brake discs of a car suddenly break during high-speed driving, or when the bolts of an offshore wind turbine fail due to rust, these incidents often hide the fatal flaws of traditional electroplating processes. Oxidation and rusting, hydrogen embrittlement, high-temperature failure, non-compliance with environmental protection standards - and these long-standing problems plaguing the manufacturing industry are being overturned by a coating solution derived from military technology. The Dacro process, with its corrosion resistance, no hydrogen embrittlement, ability to withstand 300℃ high temperatures, and zero pollution, has become an innovative alternative to electroplated zinc in fields such as automobiles, wind power, railways, aerospace, defense industry, marine engineering, subways, power, tunnels, household appliances, motorcycles, bridges, standard parts, petrochemicals, etc.

The predicament of the traditional electroplating industry and the solution of the Dacro process

The electroplating zinc process was once hailed as the "gold standard" for metal corrosion prevention, but it has gradually revealed its shortcomings in modern industrial settings. These shortcomings mainly lie in four aspects: environmental governance, technical bottlenecks, capacity adaptation, and policy and regulatory pressure. We will mainly explain from the perspectives of technical bottlenecks and environmental governance, as well as policy and regulatory issues.

Technical bottleneck: Process limitations

The traditional electroplating process adsorbs hydrogen atoms during the electroplating of force-bearing components such as car brake discs, which may cause hydrogen embrittlement and fracture. This risk was verified in a large-scale recall incident of a German automaker in 2019. The traditional coating is more fragile in high-temperature environments such as engine compartments. It starts to peel off at 100°C, while the Dacro process has successfully withstood a short-term 800°C high-temperature impact on the exhaust pipe in customer tests. However, electroplating is used in some complex structural components, resulting in a very low yield rate, and the coating is prone to discoloration and cracking in high-temperature environments.

Dacro Process: No Hydrogen Embrittlement + High Temperature Resistance, Solving the Problem of Protective Measures for Load-bearing Components

The brake disc coating production line customized by Shisheng Group for the leading brake disc enterprises in China reveals the breakthrough advantages of Dacro technology. The process is completely free of electrolytic reactions, fundamentally preventing hydrogen atom penetration. After the salt spray test, the elongation retention rate of the metal substrate remains over 99%. In terms of heat resistance, the automotive exhaust pipes using the MX series coating solution still achieve the highest level of GB/T 9286 standard in the continuous working environment of 350℃. This property stems from its unique scale-like zinc-aluminum structure - with over 2 billion metal scales in each square meter of coating, forming a dense oxide protective layer at high temperatures.

Dacro Process: Ultra-permeable + Strong Corrosion Resistance, Covering the Blind Areas of Electroplating Process

The internal wall anti-corrosion of wind turbine bolts used to be a difficult problem in the industry. The electroplating process had a protective gap due to the static shielding effect. However, the Dacro coating solution can penetrate a 1.5mm narrow gap with a micron-sized particle size and form a uniform coating at the root of the bolt's thread. The actual measurement data from the special coating production line for fasteners of Shisheng Group shows that after a 1200-hour salt spray test, the rust area of the Dacro-treated parts is less than 0.5%, while the electroplated parts of the same level have already completely rusted. This protective effect comes from the synergy of chromates and zinc-aluminum. The self-repairing ability of the passivation film enables the corrosion resistance life to be 7-10 times that of electroplating.

Dacro Process: Zero Pollution + Green Manufacturing, Leading the New Trend in Surface Treatment

In a certain industrial park in China, the traditional electroplating workshop contrasts sharply with the Dacro production line: the former requires a wastewater treatment system worth 6 million yuan, while the latter only needs standard drying equipment. The water-based, chromium-free Dacro coating solution (zinc-aluminum coating) formula of Shisheng Group's MX series has even passed the EU RoHS certification. During the coating process, only water vapor is emitted. A customer in Zhejiang introduced an integrated immersion and spraying production line, which reduces the energy consumption per ton of workpieces by 42%. This is thanks to its closed-loop design - the recyclable rate of unattached coatings reaches 97%. When the dual-carbon target forces industrial upgrading, the chromium-free formula has passed the EU RoHS certification. The Dacro technology is transforming from an anti-corrosion expert to an environmental pioneer and is becoming the future path of green manufacturing.

The selection logic under technological iteration

When performance, environmental protection and cost form the "impossible triangle", the Dacro process has provided the current optimal solution. In various scenarios such as fasteners in various industries, high-temperature components in automobiles, and complex structural components in wind power, the technology switch has been completed first. The export data of Shisheng Group over the years has confirmed this trend. As the technical director of Shisheng Group said: "It's not about eliminating electroplating, but letting each process return to its most suitable battlefield." Driven by the dual forces of green manufacturing and high-performance requirements, this new wave of surface treatment technology revolution is accelerating its spread across the globe. Choosing innovative anti-corrosion solutions is choosing to coexist with the Earth for the future.