A method for making a braking band (2) for a brake disc (1) for a disc brake, comprising the following steps: a) preparing a mold (10) having an inner cavity (11), which comprises a first portion (11a) of a shape corresponding to the braking band (2) to be made; b) preparing a band preform (20) comprising a central layer (200) made of porous ceramic material comprising silicon carbide (SiC), an upper outer layer (201) and a lower outer layer (202), said upper outer layer (201) and said lower outer layer (202) being made of porous ceramic material comprising silicon carbide (SiC) and infiltrated with silicon (SiC+Si), said upper outer layer (201) and said bottom outer layer (202) being arranged in an opposing way and on opposite sides of the central layer (200); c) placing said band preform (20) inside the mold at the first portion (11a) of said inner cavity (11); and d) injecting a liquid or semi-solid aluminum alloy inside the entire inner cavity (11) of the mold (11) so as to infiltrate only the central layer (200) of said band preform (20) made of porous ceramic material with said aluminum alloy, obtaining at the first portion (11a) an aluminum metal matrix composite reinforced by said central preform (200) which defines the braking band (2) to be made. A braking band and a brake disc are made at least with the aforesaid method.

The present invention provides a bright aluminum alloy which has high mechanical properties and in which the occurrence of uneven color is also suppressed to a high degree when an aluminum alloy die-cast material thereof that includes tungsten is subjected to anodization treatment. Also provided is a bright aluminum alloy die-cast material that is manufactured using said bright aluminum alloy. The aluminum alloy pertaining to the present invention includes 0.5-3.0% by mass of Mn, 0.1-2.0% by mass of Mg, 0.01-1.0% by mass of W, and 0.05-2.0% by mass of Si, the balance being aluminum and unavoidable impurities.

Aluminum alloys, metal products made using the aluminum alloys, and methods of processing the aluminum alloys are disclosed. The disclosed alloys can be prepared using large amounts of recycled aluminum alloy content, such as up to 100% recycled content, or more. The disclosed aluminum alloys include amounts of iron, manganese, chromium, and/or silicon in excess of comparable aluminum alloys commonly made by alloying prime aluminum. Further, the disclosed alloys include ratios of a total amount of manganese and chromium to iron of greater than or about 0.60 or 0.70, which may contribute, at least partly, to desirable bending, forming, and surface properties and characteristics of metal products made using the aluminum alloys. The disclosed alloys can be used to prepare automotive and structural panels such that these products are generated using large amounts of recycled aluminum alloy content.

A substrate handling chamber body is formed from a castable aluminum alloy including a manganese (Mn) constituent and an iron (Fe) constituent. The castable aluminum alloy has a manganese (Mn) constituent-to-iron (Fe) constituent ratio that between about 1.125 and about 1.525 to limit microporosity and shrinkage porosity within the castable aluminum alloy forming the substrate handling chamber body. Semiconductor processing systems and methods of making substrate handling chamber bodies for semiconductor processing systems are also described.

Disclosed herein are systems and methods for providing lightweight alloy articles, for example, magnesium alloy battery enclosures for electric vehicles. In some embodiments, a magnesium alloy can progress through a production line configured to chip a magnesium alloy ingot, mix the chipped alloy with additional alloying elements, and melt and mold the alloy to form a magnesium alloy metal article. The article can then be finished, coated, and joined to another magnesium article and/or to a dissimilar metal to create the magnesium alloy article.

A clutch device includes a pressure plate movable toward or away from a clutch center and rotatable with respect to the clutch center. The pressure plate includes a flange extending radially outward from an outer circumferential edge of a body, pressure-side fitting teeth projecting in a first direction from a front surface of the flange, holding input-side rotating plates and a portion of output-side rotating plates being arranged in a circumferential direction, a body-side recessed portion recessed in the first direction from a second direction-side surface of the body, and a flange-side recessed portion recessed in the first direction from a back surface of the flange. As seen in an axial direction of an output shaft, the flange-side recessed portion at least partially overlaps one of the pressure-side fitting teeth.

A method for producing an aluminum alloy includes: (i) an adjustment step of adjusting the composition of a raw material of the aluminum alloy to a specific composition; (ii) a continuous casting step of casting the raw material of the aluminum alloy having the composition adjusted in step (i) to produce an ingot; and (iii) a hot working step of performing hot working on the ingot produced in step (ii) such that a draft is appropriate according to the composition of the aluminum alloy.

The present disclosure discloses a composite radiator manufactured by an aluminum-copper integrated die-casting process for a laser chip. In the process, a copper heat dissipation assembly, after being completely manufactured, is stably provided in an anti-gravity cavity mold, and is die-cast with an aluminum material to form a copper-aluminum composite, which is subjected to (T4+T6) heat treatments to be prepared into a composite blank; single T2 copper heat dissipation and heat exchange flow paths are formed, an advanced coolant is used, and in combination with a structure design of a cooling module, an totally-enclosed cooling circulation system is formed; and an integrated laser pump source structure with a concise structure, efficient cooling, stable dimension, and easy post processing is manufactured.

A multi-process parameter optimization method for low-pressure casting of aluminum alloy wheel hubs is disclosed, relating to the technical field of low-pressure casting of automobile wheel hubs. The method includes: building a three-dimensional model of an aluminum alloy wheel hub; setting initial production process parameters; numerically simulating a low-pressure casting process; analyzing temperature distribution in key points of a mold; adjusting the production process parameters based on temperature distribution; repeating the above steps to further optimize the production process parameters and obtain an optimal combination of process parameters; collecting and analyzing actual production data and building a model; and optimizing the process parameters by using a dynamic multi-objective particle swarm.

Provided is a method for evaluating the stability of the cooling effect of a cooling system for low-pressure casting of an aluminum alloy wheel hub, relating to the technical field of low-pressure casting of automobile wheel hubs. The method includes: selecting a mold object; arranging a thermocouple, and acquiring temperature data; changing an initial temperature at a temperature measuring point of the thermocouple, and further acquiring real-time temperature data; extracting characteristic temperature data, and performing linear regression between an initial temperature value and a characteristic temperature value; and performing temperature data fluctuation analysis, and quantitatively measuring the stability of the cooling effect of the cooling system by using a maximum value and a minimum value of deviation of discrete points from a fitting curve as indexes.