Descaling in the metalworking industry, especially for coils and plates, is a vital process post-lamination. After being subjected to high temperatures during lamination, coils and plates often develop a layer of scale on their surface. This scale, if not removed, can hamper further processing and affect the quality of the final product. While acid bath treatments are commonly used, blasting is essential to maximize scale removal and prolong the life of these acid baths.
Effective April 1, 2024, Seoul Shot Industry Co., Ltd. will officially change its name to Winoa Korea Co., Ltd.
Since joining the Winoa Group, a global leader in metal surface cleaning, in 1999, Seoul Shot Industry has established itself as a frontrunner in the Korean metal abrasives industry, experiencing steady growth and success. This name change marks a significant milestone in the company's journey, solidifying its position as Winoa's Korean sales subsidiary and reinforcing its commitment to further growth and collaboration with the Winoa Group.
Desanding in foundry is a critical post-casting process that ensures the quality and functionality of metal parts. During casting, liquid metal is poured into a sand mold. Once the metal cools and solidifies, it emerges encased in a hard, sticky layer of sand. The primary objective in desanding is to remove this sand completely without damaging the part, preparing it for subsequent machining operations.
▲ Desanding in the fondry process
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Metal surface treatment is an essential aspect of industrial manufacturing, impacting the durability, efficiency, and quality of metal products. This overview explores various critical applications, each tailored to specific needs and challenges in the field.
Forging processes often result in scale formation on metal parts. Descaling in forging involves removing this scale to ensure quality and prepare the surface for further operations. Techniques include abrasive blasting with specific materials like S390 to S660 and GP18 t
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The sandblasting process is a mechanical technique for the controlled cleaning of a surface, usually metallic. It is made by erosion thanks to the abrasion generated by propelling metal shots or grit with compressed air lances.
Another method uses wheel blasting machines. The sandblasting process, in addition to allowing the surface of a metal product to be cleaned from residues and corrosive scales, can also be used to obtain a particular
The terms sandblasting and shot peening in Korea are sometimes used interchangeably but in fact they describe two very distinct procedures for surface treatment and finishing in different industrial fields.
Sandblasting is the procedure that allows you to remove and eliminate, with a stream of abrasive and air launched at high speed and at very high pressure, impurities and corrosive slags: paints, rust, oxides, sand and calamine. In this way the surface can be prepared in order to create the best adhesion between the surface and the coating that will be applied or reapplied on the it.
For the sandblasting process, various types of abrasive material are used depending on the result to be obtained in terms of cleanliness and roughness of the surface. Mineral abrasives such as Garnet, Corundum or glass can be used,
Ferrous metals include mild steel, carbon steel, stainless steel, cast iron and wrought iron. These metals are primarily used for their tensile strength and durability, particularly mild steel which helps support the tallest skyscrapers and longest bridges in the world. You can also find iron and its alloys in house construction, industrial containers, large-scale piping, automobiles, railroad tracks, most of the tools and hardware you use around the house and the knives you cook with at home.
Due to the high amounts of carbon used during their creation, most ferrous metals and ferrous alloys are vulnerable to rust when exposed to the elements. While this is not true of wrought iron, which is so pure iron that it resists oxidation,
Shot blasting systems are used in many industrial fields for mechanical processing, cleaning, finishing or improving the strength of metals. The process involves subjecting the piece to a jet of spherical or angular metal shot or another abrasive. There are different types of shot blasting systems: the simplest are those consisting of manual compressed air sandblasting machines while the automatic systems use a turbine powered by an engine to increase the output speed of the abrasive. Using a shot blasting system changes the surface of the treated piece which can undergo different processes depending on its final use.
The expression sand for sandblasting normally refers generically to the abrasive media used in the various shot blasting systems, both with compressed air and with turbine.
Silica sand is common sand but its chemical name is silicon dioxide. Also known as quartz, silica is one of the most common minerals in the world. Silica sand is weathered quartz rock and is the type of sand found on most beaches around the world. It has a good efficiency for sandblasting because the particles are quite uniform in size and the almost microscopic sharp
