Data-2024
Stainless steel is cast into various shaped molds to obtain a specific form. Casting stainless steel into various shapes requires the metal to be resistant to corrosion and strong. The interaction between these factors is inverse, so corrosion resistance requires sacrificing strength, and strength enhancement weakens chemical stability.
Dr. Ces Roscoe invented the stainless steel grade 'N.Genius', which is characterized by chemical stability, strength, and is suitable for forming. It is believed that the new N.Genius grade will replace the 6Mo grade used for component casting.
More information - Stainless-steel-world.net2024-data
When painting stainless steel, it is important to carefully choose the type of paint and properly prepare the steel surface. The most popular surfaces are brushed, matte, and mirror finish. On a brushed steel surface, paint adheres well, but it is recommended to sandblast if the sheet is thicker. The 2B surface should be sanded with Grit120 to ensure better paint adhesion. A mirror finish is decorative and too smooth for painting – paint will not adhere to the BA surface. Compared to regular steel, paint adheres more poorly to stainless steel due to the chromium oxide layer. Therefore, the surface must be sanded or sandblasted to ensure that the paint stays on the metal surface. The surface must also be thoroughly cleaned of grease and dust. When painting sharp stainless steel corners, there is a risk that the paint will not adhere or will form a very thin layer, so it is recommended to round the product's corners for an easier painting process. The same principle applies when varnishing corners: varnish may drip from sharp corners, causing the metal to deteriorate sooner, and dirt may get under the varnish layer on the steel sheet. Dirt can cause corrosion, which manifests as web-like expansion. The paint must contain no more than 50ppm of chloride, and the primer (undercoat) cannot contain zinc, as zinc corrodes faster than steel and will destroy the chemical composition of the primer. In summary, when painting stainless steel, the surface must be cleaned, sanded, and preferably sandblasted (for thicker sheets). Thinner sheets should be sanded with a 120 grit. After preparing the sheet for painting, it is recommended to use powder coating due to the mechanical durability of the paint and chemical stability. Powder coating also covers imperfections caused by sandblasting or rough sanding.
Stainless steel bolts are commonly used in industry due to their strength and durability. Sometimes, fastening components get stuck on bolts due to large force impacts. Such impacts often deform both the bolt and the fastening component, damaging the interaction between the component and the bolt. To avoid such situations, a recently invented stainless steel component hardening method is used. This method only affects a few micrometers of the surface of the component and the bolt. This method is different from other methods because strengthening the surface does not sacrifice the chemical stability of the metal. It is called thermochemical metal hardening. Thermochemical metal hardening also helps prevent the "eggshell" effect on products it is applied to. The eggshell effect occurs when shallow cracks appear on the metal surface due to sudden temperature changes or physical force factors. Studies have proven that steel hardened using this method is 125 times more resistant to wear. This new stainless steel hardening method does not reduce corrosion resistance like other hardening methods, and in some cases, even improves resistance. It also does no harm to the environment. More: About stainless steel hardening.