3results about How to "Bright surface" patented technology

This invention discloses a method for preparing high-elongation bars for cold forging, belonging to the field of aluminum alloy preparation technology. Through optimization of composition and process, the prepared bars possess high purity, uniform and fine equiaxed grain structure, and excellent plasticity, with significantly improved elongation. This meets the stringent requirements of cold forging for high material plasticity, resulting in a bright, crack-free surface and uniform grains after cold forging, overcoming problems such as oxide scale, coarse grains, and poor dimensional accuracy caused by hot forging. Furthermore, the introduction of modified talc and sodium nitrate as refining agents further promotes uniform microstructure, achieving high elongation and excellent cold forging performance.

The invention relates to the technical field of aluminum material processing oil, and particularly discloses an environment-friendly residue-free aluminum material processing oil composition and a preparation method thereof. The environment-friendly residue-free aluminum product processing oil composition is prepared from the following raw materials in parts by weight: 60 to 100 parts of polyglycol ether, 2 to 17 parts of synthetic ester, 0.5 to 2.5 parts of antioxidant, 0.1 to 0.5 part of metal corrosion inhibitor and 0.1 to 3 parts of tackifier. The synthetic ester comprises star-shaped complex ester, and the star-shaped complex ester comprises the following raw materials: pentaerythritol, oleic acid, phenylphosphonic acid and boric acid. The environment-friendly residue-free aluminum product processing oil composition disclosed by the invention can be used for forming and processing aluminum products, can effectively inhibit oxidation caused by factors such as high-temperature friction heat and metal catalysis in a cyclic heating process under heavy-load and high-temperature working conditions, can realize almost no residue after aluminum product post-treatment at 540 DEG C, ensures that the surfaces of the aluminum products are bright and free of discoloration, and has the advantages of simple process, low cost and the like. And the subsequent cleaning procedure is omitted.

The present application belongs to zinc-nickel alloy plating layer, and particularly relates to an alkaline stripping solution for removing unqualified zinc-nickel alloy plating layer, a preparation method and application thereof. In order to safely and efficiently remove unqualified zinc-nickel alloy plating layer, the present application provides an alkaline stripping solution, which is composed of the following components in terms of mass concentration: main salt: NaOH 100-180 g / L; oxidizing agent: sodium nitrate 180-200 g / L and NaClO 10-20 g / L; complexing agent: salicylaldehyde oxime 30-50 g / L and diethylene triamine 30-50 g / L; corrosion inhibitor: 2-acetylpyrrole or 4-piperidine carboxamide 2-10 g / L; wetting agent: sodium dodecyl sulfate 0.5-1.5 g / L. After the components in the alkaline stripping solution are mixed in proportion, the alkaline stripping solution can be directly used for removing unqualified zinc-nickel alloy plating layer, the stripping rate reaches 0.6-1 um / min, and the stripping temperature range is wide without damaging the substrate.