To extend the lifespan of the coating, it is essential to use Type 1 surface preparation (blast treatment) that can completely expose the metal surface, rather than Type 2 surface preparation.
**Differences Between Type 1 and Type 2 Surface Preparation for Paint Removal** Paint removal was performed using Type 1 and Type 2 surface preparation. When we zoom in on the surface after processing, there is a significant difference. [See image] What exactly is surface preparation? It is introduced in the link below: [What is Surface Preparation in Painting? Purpose and Types] https://www.nc-net.or.jp/company/98405/product/detail/196279/ **About Surface Preparation Work** The most important aspect of painting is surface preparation. Surface preparation, also known as "keren," is divided into four types: Type 1 to Type 4, based on the work content and processing methods. All methods aim to change the surface to a state more suitable for painting, but there is a significant difference in the finish between Type 1 and Type 2 after processing, as shown in the photos. In metal painting, the lifespan of the paint is said to be between 10 to 50 years at most. What influences this paint lifespan is not the type or quality of the paint or the painting technique, but rather the processes before painting. The method of surface preparation is the cause that affects the paint lifespan. Type 1 and Type 2 surface preparation accounts for about 50% of the differences in paint lifespan.
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【Type 1 Surface Preparation】 This is performed through blast treatment, which grinds the surface by colliding abrasive materials at high speed. It is necessary to remove 95-99% or more of foreign substances adhering to the surface, such as rust, oxide films, and coatings (active films※₁). Type 1 surface preparation corresponds to the following standards in "ISO" and "SSPC": ISO standard ISO-Sa3 / ISO-Sa2.5 SSPC standard SSPC-SP5 / SSPC-SP10 Since it can completely expose the metal surface, it is the most effective treatment method. Products with discovered painting defects can also be perfectly stripped of paint through blasting, allowing them to be repainted to a condition comparable to new. 【Type 2 Surface Preparation】 This is performed using power tools such as grinders and wire wheels. It is a method that only removes dead films and rust adhering to the surface. It is mainly carried out manually in situations where blast treatment is difficult. Type 2 surface preparation corresponds to the following standards in "ISO" and "SSPC": ISO standard ISO-St3 SSPC standard SSPC-SP3 Since it is difficult to completely remove rust and coatings, the metal surface is exposed as much as possible.
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Turning your troubles into good experiences for our customers. We respond to such customer requests. From "nothing" to "something." Creating "one-of-a-kind" rather than "mass production." Harada Ironworks is dedicated to fulfilling those desires. To meet the diverse needs of our customers, we provide a consistent production service from material procurement to painting and installation, helping to shorten delivery times and reduce total costs. With over 70 years of extensive experience, we are committed to providing even greater "high added value" to our products through the skills and know-how we have honed. If you have any inquiries regarding production or painting, please feel free to contact us. We look forward to hearing from you. For blasting and painting, leave it to us. Harada Ironworks Co., Ltd. Hiroshima TEL: 082-232-2445 FAX: 082-293-0286 Contact: Tao Mobile: 090-3742-9768 Email: bousei@harada-tekkou.co.jp Please feel free to contact us for consultations or estimates.
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Our company manufactures products tailored to the diverse needs of various sites. We respond to customer requests with our capabilities, advantageous location, and thorough quality and delivery management. You can trust us with everything from material ordering to can manufacturing, processing, surface preparation, and painting. Additionally, we have dedicated many years to research and development in rust prevention, establishing a solid technology and facilities as a "rust prevention department," and we also perform tasks such as paint stripping. Please feel free to contact us with any requests.
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