7results 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 invention relates to the technical field of extrusion dies, and discloses an independently fed single-die double-outlet aluminum frame extrusion die, comprising an upper die, a lower die and a protective seat, wherein an upper die male head is provided at one end of the upper die, and four diversion holes are circumferentially provided on the outer sides of the two upper die male heads, and a diversion bridge is provided between two adjacent diversion holes; two independent lower die welding cavities are provided in the lower die, and a discharge port is provided at the bottom end of each lower die welding cavity; the protective seat is installed at the bottom end of the lower die, and two supporting grooves are provided in the protective seat, and a water cavity is provided on the inner side of the protective seat, and the water cavity covers the outer side of the supporting groove. This die follows the design concept of "symmetrical diversion, separate control", and two profiles are respectively diverted and controlled by the diversion holes of the upper die, and at the same time, the two profiles are respectively fused by two independent welding chambers of the lower die. During extrusion, the extrusion force is symmetrical, the aluminum flow is evenly distributed, and the extrusion speed of the two profiles is consistent, which can fundamentally improve the yield rate and production efficiency.

The invention belongs to the technical field of high-temperature alloy strip foil preparation, and particularly relates to a nickel-based wrought high-temperature alloy strip foil preparation method and a high-strength plasticity control method thereof. The method is designed according to the rolling process deformation amount and the annealing process of the GH3536 alloy strip foil, so that the rolling process deformation amount is controlled reasonably, the internal organization structure is more uniform, intermediate high-temperature rapid annealing is achieved, coarse internal grains are inhibited, and the grain size and uniformity of the internal organization are adjusted; in the final cold rolling state annealing process step, based on the performance use requirements, vacuum annealing and online continuous annealing processes are designed, and the grain sizes in the foil direction of the GH3536 alloy strips with different thicknesses are controlled through recrystallization annealing, so that the ratio of the thickness to the average grain size is larger than 7. The high-strength and high-plasticity GH3536 alloy strip foil is good in surface quality, the room-temperature mechanical properties can meet the requirements that the yield strength (Rp0.2) is not lower than 310 MPa, the tensile strength (Rm) is not lower than 760 MPa, the room-temperature ductility (A) is not lower than 15%, the performance is uniform and stable, and the requirement for high quality is met.

The invention relates to the field of auxiliary chemicals, in particular to the field of C08L2201 / 08, and particularly relates to an environment-friendly stabilizer for PVC (polyvinyl chloride) and a preparation method of the environment-friendly stabilizer. The environment-friendly stabilizer for PVC is prepared from the following raw materials: stearate, a lubricant, hydrotalcite, an antioxidant, a coupling agent, an auxiliary stabilizer and a filler. Wherein the hydrotalcite comprises CZ-380 and CZ-390, and the lubricant comprises oxidized wax and Fischer-Tropsch wax. The prepared environment-friendly stabilizer for PVC can significantly improve the weather resistance, temperature resistance and glossiness of a PVC product, and the actual use effect is excellent.

The invention discloses a brush plating solution and a brush plating process for repairing a tungsten alloy electroplated coating, and the preparation process of the brush plating solution comprises the following steps: adding sodium tungstate, sodium citrate, citric acid, nickel sulfate and sodium hypophosphite into deionized water, heating, stirring and dissolving, and adjusting the pH value to 7.0-9.0 to obtain a basic solution; the method comprises the following steps: cleaning SiC particles with deionized water, settling, filtering, adding the settled and filtered SiC particles into a basic solution, adding deionized water, and stirring at a constant volume to obtain the brush plating solution. According to the method, SiC particles are added into the basic solution to be doped and co-deposited into the brush plating layer, good polishing and composite strengthening effects can be achieved, the plating layer which has good corrosion resistance and abrasion resistance, has the hardness reaching 650 HV or above and is flat, smooth and compact is obtained, the method capable of conducting on-site local repairing on the tungsten alloy is obtained, operation is easy, efficiency is improved, and the method is suitable for large-scale popularization and application. And the components and performance of the coating are equivalent to those of a common nickel-tungsten alloy coating, and the service life of a product is not affected.

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.