4results about How to "Small tissue" patented technology

The application discloses a kind of high-performance magnesium-lithium alloy materials, the high-performance magnesium-lithium alloy material is obtained by being compacted by magnesium-lithium alloy powder into mould, then sintering densification is carried out, in addition, the application also provides a kind of preparation method of high-performance magnesium-lithium alloy material, comprising the following steps: one, Mg-8Li-9Al-1Zn alloy powder is weighed and loaded into mould;Two, the powder in the powder loaded mould is compacted;Three, the mould with compacted powder is sintered densification in vacuum, and high-performance magnesium-lithium alloy material is obtained in mould.The high-performance magnesium-lithium alloy material of the application uses Mg-8Li-9Al-1Zn alloy powder as raw material, is compacted by being loaded into mould, then sintering densification is carried out, process flow is short, cost is low, operation is simple, flexible, the obtained high-performance magnesium-lithium alloy material component is uniform, organization is small, and the organization, structure of material can be designed, easily controlled, and the compressive strength is greater than 500MPa.

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.

The present application belongs to the field of TiAl intermetallic compound, and relates to a TiAl alloy composition and a preparation method of high-performance TiAl alloy low-pressure turbine blade. Based on a TiAl alloy composition, the alloy is first made to have fine grain structure through reasonable extrusion + recrystallization annealing process, then the special molybdenum alloy die and the process method of vacuum isothermal die forging are adopted, so that the brittle material realizes the forming of blade structure at high temperature and low speed, and the technical bottleneck problems such as large blade machining allowance, serious material waste, uneven blade structure, unstable mechanical properties of parts and the like caused by the need of machining preform of TiAl alloy at high temperature and preheating at low temperature during the near isothermal forming in the conventional preparation method are solved, and the blade quality is significantly improved and the manufacturing cost is saved. The machining allowance of the TiAl blade die forging part of the present application is only 2mm, and the raw material consumption can be saved by about 30%.

The present application belongs to the technical field of continuous preparation of porous metal materials, and relates to a method for preparing porous iron by rapid solidification of iron-zinc alloy + continuous annealing and dezincification, wherein iron and zinc are smelted under a protective atmosphere to obtain Fe-Zn alloy melt; the obtained Fe-Zn alloy melt is rapidly solidified by single-roller spin-chilling to form Fe-Zn alloy ribbons; the Fe-Zn alloy ribbons are subjected to continuous annealing treatment under a protective atmosphere, so that zinc is removed in the form of gas phase, and porous iron ribbons are obtained; and the porous iron ribbons are cooled and wound to obtain continuous porous iron ribbons. The present application realizes the continuous and large-scale production of porous iron ribbons, and the dezincification process is a pure physical gas phase removal process, without generation of acid and alkali waste liquid, and is green and environmentally friendly.