All categories
Related News
27
2025
-
09
Ceramic Cookware Coating Line: The Core Link Empowering the Quality Upgrade of Cookware
Author：
Chuangzhi Coating
With the continuous rise in consumers' demand for healthy cookware, ceramic cookware has become one of the mainstream products in the kitchenware market, thanks to its advantages of high temperature resistance, easy cleaning, and no release of harmful substances. As the core of the production process, the ceramic cookware coating line directly determines the uniformity, adhesion, and durability of the cookware's surface coating, serving as a key barrier to ensure product quality.
The core process of the ceramic cookware coating line can be divided into four stages, and precise control of each link is crucial to the final product performance. The first is the pre-treatment stage, which requires degreasing, derusting, and surface activation of the cookware substrate — removing oil stains and impurities from the substrate surface with alkaline cleaning agents, and then using sandblasting to increase the substrate's roughness, laying a foundation for subsequent coating adhesion. Any oversight in this step will directly lead to coating peeling; therefore, the industry mostly adopts automated spray systems to ensure processing efficiency and consistency.
After entering the spraying stage, the ceramic cookware coating line usually adopts electrostatic spraying technology. This technology atomizes ceramic coatings through a high-voltage electric field, allowing charged coating particles to be accurately adsorbed on the cookware surface. It not only achieves uniform control of coating thickness (with an error controllable within ±5μm) but also reduces coating waste, aligning with the currently advocated concept of eco-friendly coating processes. Currently, the mainstream ceramic coatings are mainly water-based ceramic glazes. Compared with traditional solvent-based coatings, their VOC (Volatile Organic Compounds) emissions are reduced by more than 30%, which not only meets national environmental standards but also reduces impacts on the health of production workers.
After spraying, the cookware enters the curing stage. The curing oven of the ceramic cookware coating line requires strict control of temperature and time — usually preheating at 120℃ for 15 minutes to remove moisture from the coating, then heating up to 450-500℃ and holding for 30 minutes to fully cross-link and cure the inorganic ceramic particles in the coating. This process directly affects the high-temperature resistance and hardness of the coating; if the temperature is too low or the time is insufficient, the coating is prone to cracking, scratching, and other issues. Today, advanced coating lines have adopted PLC intelligent temperature control systems to monitor the temperature distribution inside the oven in real time, ensuring that each piece of cookware is in an optimal curing environment.
The final stage is inspection: the ceramic cookware coating line needs to verify the coating quality through multiple tests. In addition to appearance inspection (no defects such as sagging or pinholes), it also requires adhesion testing (the cross-cut test adhesion level must reach Grade 0), high-temperature resistance testing (no abnormalities after dry heating at 260℃ for 1 hour), and scratch resistance testing (no scratches after 500 scrapes under a 500g load). Some high-end coating lines have also introduced machine vision inspection technology, which automatically identifies coating defects through high-definition cameras and AI algorithms, significantly improving inspection efficiency and accuracy.
In terms of technological development trends, the ceramic cookware coating line is moving toward the direction of "more eco-friendly, more intelligent, and more efficient." On one hand, eco-friendly coating processes are continuously upgraded — for example, the adoption of UV-curable ceramic coatings shortens the curing time from the traditional 30 minutes to 5 minutes, with no VOC emissions, further reducing production energy consumption and environmental impact. On the other hand, technologies for coating adhesion improvement are constantly innovated: by spraying a nano-scale transition layer on the substrate surface, the coating adhesion is increased by more than 20%, solving the industry pain point of coating peeling during long-term use of ceramic cookware.
In addition, the demand for customized coating has promoted the flexible transformation of ceramic cookware coating lines. Today, a single coating line can produce coatings of different colors and textures by quickly replacing spray guns and adjusting process parameters, meeting consumers' personalized needs for cookware appearance. This flexible production model not only reduces enterprises' investment costs in production lines but also enables rapid response to market changes, enhancing product competitiveness.
In summary, the ceramic cookware coating line is not only a "superficial project" in ceramic cookware production but also the "core essence" that ensures product quality and safety. With the improvement of environmental requirements and the upgrading of consumer demand, the ceramic cookware coating line will continue to drive the ceramic cookware industry toward higher quality and greener development through technological innovation, providing consumers with safer, more durable, and healthier cookware products.
SEO:
Next Page
Contact Us
No.2 Yingbin Avenue, High-tech District, Zhaoqing City, Guangdong Province, China.
Online Message