Caution: Substrate deformation due to high-temperature firing during fluororesin and PEEK coating.
What are the risks of distortion and dimensional changes that occur during fluororesin and PEEK coating?
In fluororesin coatings and PEEK coatings, a coating film is formed through high-temperature firing, which imposes a significant thermal load on the substrate. Therefore, depending on the material and heat treatment condition, issues such as strength reduction, hardness changes, warping, and dimensional changes may occur. In particular, aluminum alloys, quenched steel, hardened materials, and welded structures are susceptible to thermal effects, and even slight deformations in precision parts can impact performance. This article explains the effects of high-temperature firing on the substrate and points to check in advance.
basic information
In functional coatings such as PTFE, PFA, and PEEK, a firing process is conducted at temperatures around 400°C. This heating can change the metal structure and residual stress state within the substrate, potentially affecting mechanical properties. For example, in aluminum alloys, the aging hardening state may change, leading to a decrease in strength and hardness. Additionally, in quenched materials and tempered steel, re-heating can cause a reduction in hardness and distortion. Our company proposes processing that minimizes thermal effects by pre-confirming the substrate material and heat treatment state, and optimizing firing conditions and coating specifications.
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Applications/Examples of results
In products like the following, consideration for thermal effects is important: - Precision machine parts - Transport shafts - Semiconductor-related components - High-precision jigs - Thin-walled parts - Aluminum structural components - Welded frames In practice, there have been cases such as "deterioration of flatness," "slight bending of shafts," and "changes in assembly accuracy." Our company conducts coating processes that take thermal impact risks into account by reviewing firing temperatures and heating conditions, as well as devising masking and jig methods.
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Nikken Coating Industry Co., Ltd. has been a specialized manufacturer of functional coatings for contract processing, earning the trust of customers across various industries for 79 years since its founding. We leverage our processing technology to maximize the properties of fluororesins, such as non-stick, lubricity, and chemical resistance, providing high-performance coatings that directly address customer challenges, including "Thermo Pro Release" for thermal welding processes and "NonStick STC" for blades and precision molds. In recent years, in response to movements regarding regulations on fluorinated compounds (PFAS), "PEEK resin," which is gaining attention as a substitute for fluororesins, has become a focus. Nikken Coating Industry commercialized the world's first PEEK resin coating, "PEEKCOAT," in 1999. Based on the solid knowledge and know-how accumulated over more than 20 years, we are further intensifying our research and development efforts to explore the potential of next-generation PEEK coatings! We aim to be recognized as "the go-to for PEEK coatings" and will continue to lead the way. As "the best partner for functional coatings that builds trust through technology," Nikken Coating Industry will continue to contribute to the creation of high-quality, high-performance products.