An alloy modifying agent for use in preparing a metal semisolid slurry, where the components and mass ratio thereof is silicon:iron:copper:manganese:magnesium:zinc:titanium:lead:aluminum having a mass ratio of (6.05-6.95):(0.15-0.45):(0.12-0.65):(0.002-0.006):(0.001-0.5):(0.025-0.05):(0.002-0.08):(0.002-0.06):(90.5-93.2). Also, a method for preparing the alloy modifying agent and a method for using the alloy modifying agent. The alloy modifying agent is capable of increasing the solid-liquid ratio and the spherical crystal content of the semisolid slurry, increasing the preparation efficiency of the semisolid slurry and the quality of the slurry, and ensuring the quality of a final die casting product.

In molten metal jetting, where droplets of metal are jetted to 3D print a part, each layer may be traversed each successive layer with a normalizing grinding wheel or other leveling device such as a layer to level each successive layer, and/or the melt reservoir or printing chamber may be filled with an anoxic gas mix to prevent oxidation.

A casting and molding equipment for producing an amorphous alloy structural unit, including an injection system, an alloy melting system, a material feeding system, a mold system, a vacuum system, and a protective gas supply system. The injection system includes an injection tube, an injection mechanism, and a plunger rod; the plunger rod is adapted to move along an inner wall of the injection tube, and the injection mechanism is configured to control a moving direction and moving speed of the plunger rod. The alloy melting system includes a melting chamber and a heating unit; the heating unit is configured to melt an alloy material in the melting chamber; the heating unit includes an induction coil or resistance wire; the melting chamber is disposed in the injection tube, and the heating unit is disposed out of the injection tube.

Uniform hardenability is achieved in plastic injection mold and die block tooling of 20 inches and larger by the use of 0.05-0.20 vanadium in conjunction with low carbon steel in which ingots are hot worked to form mold and die blocks having cross sections of 20 inches and larger followed by water quenching and tempering.

A directional solidification apparatus includes a mold heating chamber, a solidification chamber, and a gas source. The solidification chamber is adjacent the mold heating chamber for solidifying molten metal formed from an air melt allow system as a cast body as the metal is withdrawn from the mold heating chamber. The gas sources is in fluid communication with the mold heating chamber for providing a pressurized atmosphere for directionally solidifying metal as cast body having single crystal or multi-crystal columnar micro structure.

A system and method for continuous casting. The system includes a melt chamber, a withdrawal chamber, and a secondary chamber therebetween. The melt chamber can maintain a melting pressure and the withdrawal chamber can attain atmospheric pressure. The secondary chamber can include regions that can be adjusted to different pressures. During continuous casting operations, the first region adjacent to the melt chamber can be adjusted to a pressure that is at least slightly greater than the melting pressure; the pressure in subsequent regions can be sequentially decreased and then sequentially increased. The pressure in the final region can be at least slightly greater than atmospheric pressure. The differential pressures can form a dynamic airlock between the melt chamber and the withdrawal chamber, which can prevent infiltration of the melt chamber by non-inert gas in the atmosphere, and thus can prevent contamination of reactive materials in the melt chamber.

This invention pertains to plastic injection mold tooling, and also large forgings, formed from a low carbon mold steel having markedly increased hardening and hardenability properties in large sections as contrasted to currently available commercial products. The above attributes are obtained together with equal or better machinability and improved mold parting line wear. When manufactured in conjunction with a double melt process, this invention can improve significantly polishing characteristics and other attributes of molded parts in tooling sets.

A heat-resistant AlCuMgAg alloy for producing semi-finished parts or products, which is suitable for use at elevated temperatures and has good static and dynamic strength properties combined with an improved creep resistance and comprises: 0.3-0.7% by weight of silicon (Si), not more than 0.15% by weight of iron (Fe), 3.5-4.7% by weight of copper (Cu), 0.05-0.5% by weight of manganese (Mn), 0.3-0.9% by weight magnesium (Mg), 0.02-0.15% by weight of titanium (Ti), 0.03-0.25% by weight of zirconium (Zr), 0.1-0.7% by weight of silver (Ag), 0.03-0.5% by weight of scandium (Sc), 0.03-0.2% by weight of vanadium (V), not more than 0.05% by weight of others, individually, not more than 0.15% by weight of others, total, balance aluminum, is described. A process for producing a semi-finished part or product composed of the above-mentioned aluminum alloy is described.

A heat-resistant AlCuMgAg alloy for producing semi-finished parts or products, which is suitable for use at elevated temperatures and has good static and dynamic strength properties combined with an improved creep resistance and comprises: 0.3-0.7% by weight of silicon (Si), not more than 0.15% by weight of iron (Fe), 3.5-4.7% by weight of copper (Cu), 0.05-0.5% by weight of manganese (Mn), 0.3-0.9% by weight magnesium (Mg), 0.02-0.15% by weight of titanium (Ti), 0.03-0.25% by weight of zirconium (Zr), 0.1-0.7% by weight of silver (Ag), 0.03-0.5% by weight of scandium (Sc), 0.03-0.2% by weight of vanadium (V), not more than 0.05% by weight of others, individually, not more than 0.15% by weight of others, total, balance aluminum, is described. A process for producing a semi-finished part or product composed of the above-mentioned aluminum alloy is described.

A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.