34results about How to "Achieve alloying" patented technology

The invention discloses an in-situ self-generated nano-Al 2 o 3 A laser additive manufacturing method for strengthening an aluminum-based composite material, the method comprising the following steps: (1) mixing ZnO ceramic powder and AlSi10Mg aluminum alloy powder and ball milling to obtain a ZnO / AlSi10Mg composite powder; (2) preparing the composite powder The laser selective melting process is used for additive manufacturing forming to form a solid sheet; (3) The laser re-scans the solid sheet to form a remelted sheet; (4) Repeat steps (2) and (3) to finally form the original self-generated nano-Al 2 o 3 Reinforced aluminum matrix composites. In the present invention, laser is used to excite Al and ZnO to generate aluminum thermal reaction between them in situ. 2 o 3 Ceramic particles, and by improving the overall flow process design of the method, combining laser selective melting and laser remelting scanning, the aluminum matrix composite material obtained has high density, fine microstructure, and in-situ self-generated Al 2 o 3 The particle size is nanoscale, uniformly distributed, and its phase interface is well combined with the aluminum matrix.

The invention relates to a laser processing device and method, in particular to a vacuum laser wire filling processing device and a vacuum laser wire filling method, and belongs to the field of vacuum laser processing. The problem that the device for realizing vacuum laser wire filling welding in the mode of introducing automatic alloying while drilling into the welding process and the method for realizing laser wire filling with the device are unavailable in the prior art is solved. The device comprises a laser unit, a laser processing head, a vacuum chamber component, a wire feeding component, a vacuum pumping mechanism, a water-cooling circulation mechanism and a digital control mechanism, the vacuum chamber component is arranged on the vacuum pumping mechanism, the laser processing head is arranged over the vacuum chamber component, the wire feeding component is installed in the vacuum chamber component, the laser unit is connected with the laser processing head through an optical fiber, a water-cooling circulation pipe of the water-cooling circulation mechanism is mounted at the top end of the vacuum chamber component, the laser unit and the water-cooling circulation mechanism are arranged near the vacuum pumping mechanism, and the digital control mechanism is connected with the vacuum chamber component, the wire feeding component and the vacuum pumping mechanism through cables.

The invention relates to a nodulant for alloying nodular cast iron, which comprises the following elements in percent by mass: 83.5-94 percent of Cu, 5-15 percent of Mg and 1.0-1.5 percent of RE. By using the nodulant, the nodular cast iron can be nodulized and alloyed. Because the nodulant does not contain Si, the consumption of scrap returns can be increased to lower the production cost.

The invention belongs to the field of material preparation, and particularly relates to a method for preparing ultrafine, high-purity and high-solid-solubility tungsten-based alloy powder. The invention adopts multi-stage high-energy ball milling combined with reduction heat treatment process to reduce the content of adsorbed oxygen, increase the introduction amount of solid solution elements, effectively improve the dislocation slip mechanism of pure tungsten, toughen tungsten particles, and solve the problem of low solid solubility in traditional powder milling methods. question. In the present invention, the first stage of low-speed ball milling of auxiliary materials; then, the prepared tungsten powder is added to the ball-milling equipment for a suitable period of high-speed ball milling, which effectively improves the problems of uneven particle size and impurities in the traditional mechanical alloying method. The process of the invention is simple and controllable; the obtained product has low impurity content, narrow particle size distribution and small particle size, and is convenient for large-scale industrial application.

The invention discloses a production process of aluminum, titanium and boron. Firstly, raw materials are put into a reduction table bag for reduction reaction, and a stirrer is used for stirring according to the needs of the reduction reaction; after the reduction reaction is completed, it is transferred into a frequency conversion furnace for alloy chemical operation; finally, the alloy aluminum water enters the continuous casting and rolling process through the crucible to obtain the finished product of aluminum titanium boron. The force is proportional to the specific power density of the electric furnace and inversely proportional to the square root of the operating frequency. The invention separates the reduction reaction from the alloy operation, avoids the uncontrollable drastic temperature change due to the generation of a large amount of heat in the reduction reaction, reduces the occupation time of the crucible, and improves the production capacity; changes the aluminum water out of the crucible to the bottom out method , The electromagnetic stirring generated by the frequency conversion furnace can be used to prevent the precipitation of titanium elements, so that there is no need to add a new holding furnace and electromagnetic stirrer, which reduces the investment in equipment.

The invention belongs to the technical field of abrasive tool bonds, and in particular relates to a prealloyed powder used in a composite bond abrasive tool for grinding hard and brittle materials, a preparation method thereof, and an abrasive tool. The pre-alloyed powder used in the composite bond abrasive tool for grinding hard and brittle materials of the present invention is made of MoS 2 powder and the following raw materials by volume: 40-75 parts of bronze powder, 5-45 parts of Sn powder, 1-20 parts of multi-component pre-alloyed powder, 1-20 parts of Ti powder; the MoS 2 The volume fraction of the powder is 8% to 20% of the sum of the volume fractions of the multi-component pre-alloyed powder and Ti powder; the multi-component pre-alloyed powder is composed of at least one of Co, Ni, Cu, Sn, Zn and Fe . When the pre-alloyed powder of the present invention is used as a bonding agent for abrasive tools, it helps to improve the sharpness and shape retention of the abrasive tools.

The invention discloses a machining method of corrosion-resistant metal shelf, and belongs to the technical field of metal machining. The metal shelf is formed by machining through material blending and powder making, pressing forming, sintering and surface treatment. The metal shelf comprises raw materials of 4-6 % of Tl, 0.2-0.6 % of Be, 0.6-0.8 % of C, 0.6-1 % of Os, 1-3 % of Pb, 2-4 % of Sn, 0.4-0.8 % of Ir and the balance Fe and impurities; and the impurities comprise less than 0.055 % of S and less than 0.015 % of O. In the process of powder metallurgy, all organizational structures of metal are refined continuously by powder making through a mechanical method, atomic-level mixing is achieved finally, and alloying is realized; and a uniform and compact protective film is formed by combining a surface phosphating process.

An in-situ nanoparticle-enhanced CoCrFeNiMn high-entropy alloy and a preparation method thereof. The CoCrFeNiMn high-entropy alloy combines fine-grain strengthening and particle strengthening at the same time, and the synergistic effect of the two effectively improves the strength of the material, and its yield strength Significantly higher than ordinary CoCrFeNiMn alloys. The preparation method of the CoCrFeNiMn high-entropy alloy combines high-energy ball milling and hot extrusion technology, and uses the high-energy ball milling method to achieve alloying of elements, avoids volatilization and segregation of elements in the process of melting and casting, and refines crystal grains; The hot extrusion process achieves rapid powder consolidation and in-situ self-generated nanoparticles to prepare CoCrFeNiMn high-entropy alloys with both nano-particles and fine-grained structures, which effectively improves the material strength of CoCrFeNiMn high-entropy alloys. In addition, the method can directly use the existing industrial equipment for producing ODS superalloy, the cost is low, the size is not limited, and it is suitable for industrial production.

A multi-element negative electrode material magnesium alloy and a preparation method thereof, the multi-element negative electrode material magnesium alloy includes the following components in mass percentage: Al 4-8%, Pb 3-7%, Mn 0.2-0.4%, Zn 0.5-1.0% , In 0.6 ~ 1.0%, Ga 0.8 ~ 4.0%, Hg 0.7 ~ 1.7%, Ce 0.1 ~ 0.3%, the rest is Mg. The preparation method is as follows: (1) preparing Mg-Hg master alloy; (2) sequentially adding Al, Pb, Mn, Zn, In, Ga, Mg-Hg master alloy and Ce into the Mg melt, stirring and melting, and heat preservation Stand still; (3) semi-continuous casting, homogenizing annealing, hot extrusion billet opening, hot rolling, and it is ready. The multi-component negative electrode material magnesium alloy of the invention has high activity, anti-polarization, high voltage platform, short activation time and long discharge time; the invention has simple method, low cost and is suitable for industrialized production.

The invention relates to a SiC / M2 powder high-speed steel composite material. The composite material has a relative density of greater than 99% and hardness of 66-69HRC, and comprises nano-scale enhanced-phase particles SiC, submicron-scale hard-phase SiC and separated submicron-scale M6C type composite carbide, wherein the average particle size of the enhanced-phase particles SiC is 200nm, and the particle sizes of the hard-phase SiC and the M6C type composite carbide are not greater than 1[mu]m; and the matrix of the composite material is M2 high-speed steel, the particles SiC are uniformly distributed into the matrix in a dispersed manner as additional mass points, the composite material comprises the following raw material components with contents by volume percent: 85%-90% of M2 high-speed steel and 10%-15% of the particles SiC, the volume fraction of the particles SiC with particle sizes of not greater than 200nm in the particles SiC is 10%-20%, and the balance is particles with particle sizes of greater than 200nm and less than 1[mu]m. A preparation technology for a pre-alloyed composite powder is beneficial to obtaining the composite powder with a small and uniform particle size, preventing the agglomeration of the powder SiC, and realizing adequate alloying for the particles SiC and the matrix powder.

The invention discloses a solid-phase alloying method of aluminum-silicon powder under high-pressure condition. The applied aluminum-silicon alloy comprises the following components by weight percent: 10% to 80% of aluminum and the balance of silicon. Appropriate granularity proportion of aluminum powder and silicon powder is selected, the prepared aluminum powder and silicon powder are mixed together by using a rotational ball mill in the three-dimensional direction, are subsequently put into a vacuum heating furnace to be subjected to activation treatment, and are further put into a carbon steel sleeve to sinter under high pressure at a temperature lower than the melting point, the sintering time is controlled, and the alloying is realized depending on dispersion under the condition that the aluminum and the silicon are not molten. The solid-phase alloying method is an aluminum-silicon powder solid-phase alloying method that the process course is short, the cost is low and high-quality aluminum-silicon alloy can be obtained under high-pressure condition; and the prepared aluminum-silicon alloy can be widely applied to electronic device materials or functional coating materials.

The invention discloses a high-nitrogen abrasion-resistant stainless steel griddle wire processing technology. Manganese and nitrogen are adopted, vanadium-nitrogen alloy is added, the content of nitrogen in molten steel is increased, alloying of the nitrogen is achieved, the use amount of nickel is reduced, or the nickel does not exist, and the molten liquid is purified, refined and homogenized; the manganese and the nitrogen replace the nickel, direct application of nitrogen alloy in production of stainless steel is achieved, the strength of the stainless steel griddle wire is improved, magnetism does not exist, and corrosion resistance, abrasion resistance and the like are achieved; meanwhile, the cost of stainless steel production and application is reduced by over 30 percent.

A negative electrode material magnesium alloy and a preparation method thereof. The negative electrode material magnesium alloy includes the following components in mass percentage: In 0.6-1.0%, Ga 0.8-4.0%, Hg 0.7-1.7%, Ce 0.1-0.3%, and for Mg. The preparation method is as follows: (1) preparing Mg-Hg master alloy; (2) sequentially adding In, Ga, Mg-Hg master alloy and Ce into Mg melt, stirring and smelting, heat preservation and standing to obtain a mixed melt; (3) Semi-continuous casting, homogenizing annealing, hot extrusion billet opening, hot rolling, and it is ready. The negative electrode material magnesium alloy of the invention has high activity, anti-polarization, high voltage platform and moderate hydrogen evolution capacity; the method of the invention has simple process and low cost, and is suitable for industrialized production.