4results about How to "Fully solid solution" patented technology

This invention relates to a high-strength pure nickel wire and its preparation method. The wire comprises, by mass percentage, 0.05%–0.15% C, 0.05%–0.15% Mn, 0.10%–0.35% Si, 0.10%–0.50% additive element X, with the balance being Ni. The C, Mn, Si, and X are all dissolved in a face-centered cubic nickel-based solid solution. The wire has a tensile strength of 400–500 MPa. The wire of this invention possesses advantages such as high tensile strength, stable mechanical properties, and controllable alloy mechanical properties, making it particularly suitable for preparing high-strength pure nickel filter screens.

This invention relates to the field of hot extrusion manufacturing technology, specifically to a high-strength weldable 6xxx series aluminum alloy profile, its manufacturing method, and its application. The aluminum alloy profile is composed of the following weight percentages: Si: 0.80%~1.2%, Fe≤0.20%, Cu: 0.40%~0.80%, Mn: 0.30%~0.70%, Mg: 0.70%~1.1%, Cr≤0.25%, Zn≤0.10%, Ti≤0.10%, Zr: 0.05%-0.20%, Pb<0.01%, with the balance being Al and unavoidable impurities. The profile meets the following performance requirements: tensile properties, R... m ≥420MPa, R p0.2 ≥330MPa, A 50mm ≥8.0%; Fatigue performance: at r=0.1, N=1×10 7 Under the same conditions, the fatigue strength σ of the smooth sample is ≥145MPa, realizing the lightweight manufacturing of high-speed trains.

The application relates to the field of metal materials, and discloses a steel for small-size steel balls for mine grinding and a preparation method of the small-size steel balls. The steel for the steel balls comprises the following components: C: 0.4%-0.9%, Mn: 3.0%-5.0%, Si: 1.4%-1.8%, Cr: 0.8%-1.3%, Ni: 0.3%-0.6%, Mo: 0.2%-0.4%, V: 0.15%-0.25%, Nb: 0.02%-0.06%, the rest is Fe and inevitable impurities, and the contents of Mn, V and Nb need to be controlled in coordination. The small-size steel balls are forged and hot-rolled, and are subjected to non-heat-insulation grading quenching and deep cryogenic treatment. The steel ball components and the preparation process realize low-temperature martensite transformation, obtain fine and uniform martensite structure, and the steel ball has high hardness, high impact toughness and excellent impact fatigue resistance.

This application discloses a thickened steel pipe sleeve, its heat treatment method, and its application, belonging to the field of metallic materials technology. The method includes: subjecting the thickened sleeve forming part to a first-heated sleeve by quenching at a temperature of 880-900℃; subjecting the first-heated sleeve to a first-water quenching to obtain a first-water-quenched sleeve; subjecting the first-water-quenched sleeve to a second-heated quenching at a temperature of 920-940℃; subjecting the second-water-quenched sleeve to a second-water quenching to obtain a second-water-quenched sleeve; cooling the primary and secondary sleeve bodies with external spraying and internal spraying, and cooling the thickened end with external spraying, internal spraying, and supplementary water; the external spraying flow rate is 2800-3200 m³ / h; the internal spraying flow rate is 1000-1500 m³ / h; and the supplementary water flow rate is 400-600 m³ / h. 3 / h; The secondary heating and tempering treatment of the sleeve yields a thickened steel pipe sleeve. The yield strength and tensile strength deviation of the tube body and the thickened end of the thickened sleeve after heat treatment in this application are ≤30MPa.