6 results about "Ingot casting" patented technology

The invention relates to high-strength Mg-Y-Ni-Mn alloy and a manufacturing method thereof. The high-strength Mg-Y-Ni-Mn alloy comprises 5.0-12.5% of Y, 2.0-6.0% of Ni, 0.4-1.0% of Mn and the balance magnesium and inevitable impurities. The alloy is manufactured through the following process of material preparing, vacuum melting ingot casting, cyclic homogenizing annealing, extruding and double aging. Materials do not need to be refined; the extrusion ratio is low (lambda=11); the limitations that the manufacturing process of high-performance magnesium alloy is complex and the manufacturing conditions are rigorous are broken; the process is simple; transportability is high; operation is easy, the room temperature tensile strength and the yield strength of the alloy are obviously improved; the high-performance magnesium alloy can be directly produced under existing industrial conditions; the problem that the application of the Mg alloy is limited due to the poor mechanical performance of the Mg alloy is solved; and the application range of the magnesium alloy is expanded.

The invention discloses a processing method for inhibiting recrystallization of an aluminum lithium alloy. The processing method sequentially comprises the following steps of ingot casting, homogenizing treatment, hot rolling opening blank, final solid dissolving, pre-stretching and artificial aging; the processing method is characterized in that an initial solid dissolving, a quenching and a multi-pass temperature control hot rolling steps are sequentially arranged between the hot rolling opening blank and the solid dissolving; the initial solid dissolving is solid dissolving treatment at thetemperature of 510-550 DEG C for 0.5-2 hours, and then quenching is carried out; the multi-pass temperature control hot rolling specifically comprises the steps of carrying out multi-pass rolling onthe quenched aluminum lithium alloy plate at 150-350 DEG C, and the total pressing rate is 55%-83%. According to the processing method for inhibiting recrystallization of the aluminum lithium alloy, final solid dissolving recrystallization is inhibited from growth of the nucleation and crystal nucleus, the local strain area is eliminated, and the recrystallization tendency of the plate of the aluminum lithium alloy is reduced; and the aluminum lithium alloy is uniformly deformed, the energy storage difference on the two sides of the grain boundary in the matrix is greatly reduced, the growth of the recrystallized crystal nucleus is stably inhibited, and the board has better comprehensive performance.

The invention discloses a pair of rolling-cut type bilateral scissors and a manufacturing method thereof. The pair of rolling-cut type bilateral scissors comprises ingredients in percentage by weight as follows: 0.40%-0.65% of C, 0.15%-0.35% of Si, 0.60%-0.80% of Mn, 3.50%-6.00% of Ni, 2.5%-4.00% of Cr, 1.50%-2.50% of Mo, 2.00%-3.50% of V, smaller than or equal to 0.02% of S, smaller than or equal to 0.025% of P, larger than or equal to 4% of Cr and Mo and the balance of Fe and unavoidable impurities. The manufacturing method of the rolling-cut type bilateral scissors comprises steps as follows: smelting, ingot casting, forging, annealing, rough machining, pretreatment process (normalizing and high-temperature tempering), semifinishing, final heat treatment (quenching and tempering) and finish machining. The rolling-cut type bilateral scissors can meet the production demand of high-strength medium plates of HG980, HG108, X80 and the like, and the shearing quality and shearing tonnage of the bilateral scissors are improved.

The invention relates to the technical field of aluminum alloy, in particular to a method for improving performance of an AlSi9Cu2 aluminum alloy ingot. The content of the metal element manganese is, in percentage by mass, 0.25-0.3%. The production steps include fusion, slagging-off, silicon fusion, cooling, slag removal, refining, degassing, standing and ingot casting. Tenacity and corrosion resistance of the AlSi9Cu2 aluminum alloy ingot produced through the method are tested multiple times, detection results prove that tenacity and corrosion resistance are good and superior to that of an aluminum alloy ingot produced through an existing method.

The invention relates to a silicon dioxide aerogel reinforced copper-based composite material and a preparation method thereof, and belongs to the technical field of metal materials and preparation thereof. The composite material comprises, by mass, 5% or less of silicon dioxide aerogel and the balance copper. During preparation, copper powder and silicon dioxide aerogel powder are weighed according to a proportion and mixed to be uniform, the mixed powder is pressed into a block in a steel die by using a hydraulic press to obtain a copper-silicon dioxide intermediate alloy; the copper-silicondioxide intermediate alloy and pure copper are molten through a vacuum induction furnace and cast into an ingot, and the silicon dioxide aerogel reinforced copper-based composite material is obtained. Compared with pure copper ingot casting, the copper-based composite material prepared by the preparation method has higher comprehensive mechanical property and lower density and conductivity, and therefore the material is suitable for the field with high requirements on the mechanical property and the conductivity.