Applications
Competition in the global home appliance market is intense. In addition to pursuing product durability and cost control, appliance exports face extremely stringent international environmental directives such as EU RoHS and REACH. Shihuiming provides reliable process support in eco-friendly conversion and low-cost rust prevention and degreasing for appliance internal structural parts, serving numerous well-known appliance manufacturers.
Aluminum radiator fins in air conditioners, refrigerator back panels, and die-cast aluminum motor housings inside washing machines all require surface anti-corrosion treatment before coating or assembly. Aligned with environmental trends, Shihuiming has successfully mastered chromium-free aluminum passivation technology. This process is 100% free of chromium ions and rapidly forms a stable conversion film on the aluminum surface. Testing confirms it not only easily passes all major environmental inspections but also that the conversion film forms extremely strong chemical bonds with subsequent powder coating and baked paint layers, thoroughly solving the persistent problem of paint blistering and peeling on appliance housings after years of use, while having no impact on the thermal conductivity performance of the radiator itself.
The interiors of home appliances contain large quantities of stainless steel and iron stamped brackets and hardware fittings. During the forming process, significant amounts of drawing oil and cutting fluid remain on workpiece surfaces. If pre-treatment is inadequate, it not only affects assembly but also leads to internal rusting that shortens appliance life. Given the massive volume of such parts, Shihuiming provides customers with low-foam, high-penetration industrial degreasing cleaners suitable for high-speed assembly line spray or ultrasonic cleaning. Combined with Shihuiming smoke-free eco-friendly acid cleaning solution, this not only eliminates the dense 'yellow smoke' emissions of traditional acid cleaning workshops and improves working conditions, but also effectively reduces overall wastewater treatment costs, helping appliance manufacturers achieve truly green intelligent manufacturing.
