37results about How to "No component segregation" patented technology

A process for spraying a protecting layer onto surface of Mg alloy includes such steps as washing basic material (substrate), blasting grits, preheating, preparing superfine ZnAl alloy powder, and spraying at 150-400 deg.C, under 1.5-2.5 MPa three times.

The invention discloses a preparation method of a high-strength and high-toughness multi-element Al-Cu alloy. The preparation method comprises the following steps: raw materials is heated into a molten state, spray forming process is carried out through spray forming equipment, so that the multi-element Al-Cu alloy is formed, and the multi-element Al-Cu alloy is composed of Al, Cu, Mn, Ni, V, Sc, impurity Si and Fe. According to the preparation method, the high-strength and high-toughness multi-element Al-Cu alloy material for a lightweight cartridge case is prepared through the proportion of the raw material components, based on the micro-alloying component design of a Al-Cu alloy system and by combining 3d spraying forming-rapid solidification technology; the high-strength high-toughness multi-element Al-Cu alloy material has the advantages that crystal grains are fine, the structure is uniform, and the high-strength and high-toughness performance is achieved; according to the structure and the performance of the multi-element Al-Cu alloy, a reasonable cartridge case preparation technology is selected so that the use requirements of various lightweight cartridge cases can be met, and the Al-Cu alloy material can also be applied to a shell and a launching component of a short-range, medium-range and even a remote missile; and the Al-Cu alloy material has huge economic benefits.

The invention discloses a preparation method of granulated WC-Co thermal spray powder, which uses carburized nano-WC-Co composite powder as raw material, undergoes alcohol wet grinding, pressure spray granulation, vacuum degreasing and sintering to obtain the target product. The granulated WC-Co thermal spray powder obtained in the present invention has high sphericity, pure phase, good fluidity, high bulk density and excellent performance.

The invention relates to the technical field of metal injection molding, and specifically discloses a method for preparing a superalloy honeycomb heat insulation board based on injection molding. The method comprises: S1. master alloy powder preparation; S2. feed granulation; S3. injection molding; S4. degreasing; S5. sintering; S6. hot isostatic pressing; Using this method to prepare superalloy honeycomb heat insulation panels can effectively avoid the defects of complex processing technology, high manufacturing cost, and low dimensional accuracy caused by traditional brazing processes, and the comprehensive mechanical properties of the prepared superalloy honeycomb heat insulation panels are better than those caused by brazing. Honeycomb panels prepared by welding.

The invention discloses a preparation method of a molybdenum titanium alloy material with high density, large size and high homogeneity. The method comprises the following steps: 1) adding a solvent and a binder to Mo powder and Ti powder and grinding into slurry; 2) atomizing and pelletizing the slurry by using a spraying machine, wherein the inlet temperature is 250-300 DEG C, and the rotating speed of a spray nozzle is 8000-12000rpm, so as to obtain Mo-Ti composite powder; pressing the composite powder into blanks with regular sizes; 3) loading a plurality of blanks into a sheath, filling the Mo-Ti composite powder of 50-250 microns into the adjacent blanks to form a uniform composite powder layer, wherein the thickness of the composite powder layer is 0.5-1mm, and the condition that a gap between the inner wall of the sheath at any side and the outer wall of the adjacent blank is smaller than or equal to 0.5mm is ensured; and 4) welding and degassing the sheath and then carrying out hot isostatic pressing treatment at 750-900 DEG C and 120-160MPa and removing the sheath, wherein the heat-preserving and pressure-maintaining time is 4-6 hours. The target material fabricated by the method can be used as a cathode material of a magnetron sputtering technique.

The invention discloses a superficial treatment process of an electroplating iron-nickel alloy and the electroplating solution thereof. The electroplating solution is prepared by aqueous solution and the elements include: ferrous sulfate, 100 to 150 grams per liter; nickel sulfate, 120 to 200 grams per liter; boric acid, 30 to 60 grams per liter; saccharin, 0.5 to 3 grams per liter; and sodium benzene sulfinate, 0.1 to 0.4 grams per liter. A work piece is taken as a cathode in the electroplating process. The anode is a Ti-oxide inert anode. A high-frequency switch power supply is adopted. An iron-nickel film coating can be got by electroplating with the current density of 5-10A / dm<2>. After treatment by the invention, the work piece surface is plated with an iron-nickel alloy coating which contains 40 percent to 60 percent of iron. The coating structure is a structure which is amorphous but includes nano-crystalline. The surface of the coating structure is flat and uniform and has fine crystallization. The alloy plating is characterized by good anti-corrosion performance, good ductility and high hardness, etc. Compared with the nickel plating technique, the coating got by the invention is more superior in cost performance, has the same service performance and at the same time greatly reduces the production cost and has very good economical benefits.

The present invention relates to a technique for producing laminated and composite metal material, belonging to manufactural technique of composite metal material. The present technique for producinglaminated and composite metal material is characterized by simple process, high production efficiency, low production cost, simple facility and small investment. In the method, metal liquid is directcast into a crystallizer with an induction heater on the external part. The metal liquid is refined by electroslag in the crystallizer and is simultaneously combined with metal mandril installed in the crystallizer to achieve the aim of metallurgical combination. The interface of compound layer can be easily controlled with no composition segregation in product. With highly structural density, high product quality and wide selectivity about both the madril and the material of the compound layer, the prevent invention is free from limitation of facility and technique to achieve producing laminated and multilayer composite product in large volume by small equipment.