Regarding substrate preparation using ISO Sa2 blasting.
"Benefits of Using ISO Sa2" ISO Sa2 is the third highest cleanliness standard in surface preparation. Higher standards like ISO Sa3 and ISO Sa2.5 require the removal of almost all surface contaminants, but Sa2 allows for a broader range of acceptable conditions, enabling cost and time savings. The acceptable level of adhered dirt is such that it does not detach with a putty knife that has no blade. Although some dirt may remain after blasting, the cleanliness is still superior compared to ISO St3, known as two-grade cleaning, and high adhesion with paint is expected. By removing foreign substances through blasting and creating a textured surface, the performance of the paint can be maximized, preventing early peeling of the coating and extending the product's lifespan. Products used outdoors typically select this type of specification. "Method of Working with ISO Sa2" 1. Remove slag, welding spatter, and other contaminants adhered to the surface. 2. Use solvents to remove oils, greases, and other substances adhered to the surface. 3. Completely remove all foreign substances adhered to the surface through blasting. 4. Use clean, dry air to remove dust and debris.
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basic information
ISO refers to the International Organization for Standardization, which creates international standards in various fields and is composed of representative standardization organizations from different countries. Sa2 (commercial blast cleaning) requires the removal of almost all visible surface contaminants (such as oil, rust, and oxides) that are not firmly attached. It is generally considered equivalent to the SSPC SP-6 standard. "Points to Note for ISO Sa2" Feasibility of construction depending on environmental conditions: - Work should be halted on days with bad weather or high humidity. Post-completion painting process: - The surface after blasting becomes active and rust can form within a short period, so painting must be carried out promptly. - If rust occurs again before painting, blasting treatment must be performed again. - The acceptance of the processing will be judged by comparing it with the photos in the ISO visual book. Since the visual book used to determine acceptance or rejection contains photos of unpainted steel that has been surface-prepared, it can be difficult to make a judgment if the pre-construction condition differs, so caution is necessary. Additionally, the criteria for determining which contaminants should be removed and which are acceptable are not clearly defined, so specialized skills and knowledge are required to perform the work appropriately.
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Turning your troubles into satisfaction. We respond to the needs of our customers. From "nothing" to "something." Creating "one-of-a-kind" rather than "mass production." Harada Iron Works is here to fulfill your 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 experience, we are dedicated to providing even greater "high added value" to our products through the skills and know-how we have honed over the years. If you have any questions about 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 Iron Works 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.