8319 results about "Die casting" patented technology

A hermetic sealing approach involves welding an Aluminum cover onto a low-cost Aluminum housing. According to an example embodiment of the present invention, a metal housing having a base and sidewalls extending upward therefrom is adapted to receive and couple to an HDD arrangement. The metal housing is formed using material and processing (e.g., cold formed or die cast Aluminum) that are relatively inexpensive. A feedthrough arrangement including a plurality of communication pins extends through an opening in the base and is coupled thereto, with the communication pins adapted to pass signals between the inside and the outside of the metal housing. A metal cover is welded to an upper portion of the sidewalls and, with the feedthrough arrangement, hermetically seals the metal housing.

The invention provides a processing method of a high-toughness Al-Si system die-casting aluminum alloy. The method comprises the following steps: carrying out die-casting molding of an Al-Si system aluminum alloy melt, wherein the die casting die temperature is 350-400DEG C and the pressure maintaining time is 1-60s; carrying out die opening, rapidly taking out the obtained object, putting the object in circulating cooling water for quenching, taking out the object from the circulating cooling water after complete cooling, and burring, wherein the time for transferring the object to the circulating cooling water from the die is less than 5s, the quenching temperature is 350-550DEG C and the temperature of the cooling water is less than 30DEG C; and carrying out annealing heat-insulation at 50-250DEG C for 2-3h. The method enables Al-Si system alloy die castings to have the advantages of substantially improved strength and toughness, uniform workpiece structure, excellent mechanical performances, and good safety and reliability, and the application range of the Al-Si system alloy die castings to the enlarged.

A system for adding gas to and transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, a device or structure, such as a molten metal pump, for generating a stream of molten metal, and one or more gas-release devices.

A heat exchanger is formed by connecting tube-group blocks along a tube axis, where each one of tube-group blocks includes a plurality of substrates having a large number of through holes, which communicate with insides of a plurality of tubes placed between the substrates. A length of the tubes can be shortened so that the tube-group block can be formed within a predetermined size. The substrates and the tubes can be formed by injection molding or die-casting simultaneously with ease, so that the manufacturing steps of inserting the tubes and bonding the substrates can be eliminated. The heat exchanger can be available at a lower cost while it maintains excellent heat exchanging performance.

The invention relates to a process for producing an ultra-thick plate and belongs to the field of rolling and producing an ultra-thick steel plate in the metallurgical industry. The invention mainly overcome the defect of producing the ultra-thick steel plate by a traditional model casting manufacturing blank and an electro-slag remelting manufacturing blank. The method comprises the following steps: cutting and fixing lengths of the blanks, mechanically conditioning the blanks (eliminating, leveling and cleaning a single-surface oxide layer of a casting blank with a milling machine, a planer or a shot blast); clamping an assembly (relatively superposing the cleaning surfaces of the two blanks after processing, placing the two blanks oppositely and clamping the blanks); mounting the blanks in a vacuum chamber of an electronic beam welding machine for purpose of vacuuming; sewing the assembly on the electronic beam welding seal edge, heating the assembly in a furnace and rolling the assembly through temperature control; and then producing the ultra-thick steel plate. Compared with the traditional electro-slag remelting production process, the process has the advantages of high production efficiency, reduced electric power consumption, less investment of production devices and low production cost. Compared with the traditional die casting production process, the process solves the problem of segregation and looseness of a large-scale die casting ingot center part; the finished product ratio is high; and the finished product ratio of blank assembly is over 90 %.

The invention relates to a mobile phone shell and a machining method thereof. The mobile phone shell comprises an outer shell and an inner shell, wherein the outer shell is formed by metal stamping, forging or injecting; inserts are welded or a concave part is formed in the inner side of the shell; the inner shell is formed on the inner side of the outer shell by metal die-casting; and the materials of the inner shell combine the outer shell and the inner shell together by surrounding the inserts or filling into the concave part. The machining method comprises the following steps: step 1, the outer shell is formed by metal stamping, forging or injecting; step 2, the inserts are welded or the concave part is formed in the inner side of the outer shell; and step 3, the outer shell is put into a die-casting mould, and the inner shell is cast and formed on the inner side of the outer shell. According to the mobile phone shell provided by the invention, the outer shell with a high appearance requirement is formed by metal stamping, forging or injecting, and the inner shell with a low appearance requirement and with a complicated structure is formed by metal die-casting, so that the appearance requirement of the mobile phone shell is guaranteed and the machining amount of cutting machining is reduced, so that the machining time can be reduced by at most 95% and the cost of the metal mobile phone shell is greatly reduced.

The invention discloses a processing method of a metal middle frame mobile phone shell structure and relates to the technical field of processing of mobile phones. The processing method comprises the following steps: A, stamping a blank of the metal middle frame by using a metal plate; B, milling an auxiliary antenna area on the blank of the metal middle frame in a CNC manner and retaining a connection position; C, forming a metal bottom shell by using an aluminum die casting manner; D, connecting the blank of the metal middle frame with the metal bottom shell to be a whole body; E, forming a main antenna area on the blank of the metal middle frame by using an injection molding manner; and F, milling off the connection position on the blank of the metal middle frame in the CNC manner to obtain the metal middle frame mobile phone shell structure. By combining processes of stamping molding, injection molding and CNC processing, the metal middle frame mobile phone shell structure is processed; the metal middle frame mobile phone shell structure is stable in process, high in production efficiency, short in processing time and low in production cost.

An even luminance, high heat dissipation efficiency, high power LED lamp structure includes an aluminum extrusion body, an aluminum die cast front casing and an aluminum die cast rear casing respectively provided at two distal ends of the aluminum extrusion body, a PC board mounted inside the aluminum extrusion body, LEDs mounted in different LED mounting faces of the PC board at different angles, an inner cover plate decorating the inside of the aluminum die cast front casing, a transparent outer cover covering the bottom side of the aluminum extrusion body and sealed with a water seal, and a retaining device fastened to the aluminum extrusion body to secure the transparent outer cover in place.

A heat sink according to an embodiment of the present invention can be attached to any device without printed circuit board (PCB) modification. The heat sink may clamp on device edges, which does not stress solder balls between the device and heat sink. The heat sink may be configured to be installed to or removed from the device without special tools. The heat sink may be extruded, machined, or die cast aluminum or other material to reduce part and tooling cost, and may be black anodized to be electrically non-conductive. A single-piece embodiment eliminates a need for a separate clip, thereby increasing heat transfer by as much as twenty-five percent or more over heat sinks employing clips. Further, wavy fins or other heat dissipation configurations may increase heat transfer by at least eleven percent, for a total heat transfer improvement of at least thirty-six percent over a two-part heat sink.

A hollow bicycle crank arm has a central tubular portion to reduce weight and two mounting-boss portions for mounting a crank spindle and pedal during use. A crank arm base is forged or cast with a relatively thin back and sides, preferably out of aluminum or magnesium. The crank arm base has a generally C-shaped cross section. An arm cover has a top and sides and is made from stamped steel or titanium. The cover is placed over the open crank arm base to enclose a significant hollow section. The stamped arm cover does not require any threading or welding. It can be made using a very inexpensive stamping process. The crank arm can be made using relatively inexpensive traditional manufacturing processes such as die casting or forging.

The invention discloses a Q345q-series super-thick guaranteed performance and flaw detection bridge steel plate comprising the following chemical components in percentage by mass: 0.08-0.16 percent of C, 0.20-0.50 percent of Si, 1.15-1.60 percent of Mn, not more than 0.020 percent of P, not more than 0.010 percent of S, not more than 0.12 percent of microalloyed element (V+Nb+Ti+Ni), 0.010-0.050 percent of AlS and the balance of Fe and residual elements; and carbon equivalent is not more than 0.43. The invention also discloses a production method of the steel plate, comprising the steps of rolling, cooling, straightening, cooling in pile and thermal treatment. In the rolling, the cooling and the straightening, the 130 mm super-thick Q345qD(E) steel plate is successfully developed in the production line of a converter, die casting, mill rolling and normalization thermal treatment through carrying out reasonable composition design, die casting, TMCP (Thermal Mechanical Control Process) rolling and thermal treatment; the secondary flaw detection qualification rate reaches 90 percent, the performance initial test qualification rate reaches 100 percent, and the Z-direction performance of the entity of the steel plate can reach Z15 level. The development of the super-thick steel plate satisfies the higher requirements on bridge industry.

A unitary or homogeneous patterned implant is provided. The implant is constructed of patterned cells formed by way of a molding, die casting, laser etching, laser cutting, extruding, and the like. Portions of the implant can be formed into sinusoid or other waveform strut members to control and promote elongation, expansion or contraction along single or multiple axes. As such, controlled and designated stress, tension and compression distribution is promoted across specific or localized areas of the implant.

The invention discloses a high silicon gradient composite aluminum alloy cylinder sleeve material and a preparation method thereof. The material comprises the following components in percentage by weight: 13.0-27.0 percent of Si, 0.3-2.0 percent of Fe, 0.5-5 percent of Ni, 1.5-4.0 percent of Cu, 0.3-0.8 percent of Mg, 0.3-0.8 percent of Mn, 0.1-0.5 percent of V, 0.05-0.1 percent of Sr, 0.04-0.1 percent of RE, 0.01-0.1 percent of P and the balance of Al. The preparation method comprises the following steps of: carrying out composition design and accurate batching on the materials with preliminary alloys; fusing, covering, refining and inoculation treating; centrifugal casting for forming; thermal treating; and machining and hone machining. The invention is characterized in that a gradient tribology function composite material is obtained by adopting a Sr-P-RE ternary composite modification treatment technology and a centrifugal casting technology controlled by a variable frequency motor, the preparation cost is lower than that of spray deposition technology and a powder metallurgic technology, and the mechanical property and the tribology property of a product is more advantageous than that of the product prepared by a die casting technology; moreover, the prepared cylinder sleeve has more advantageous processing quality and usage effect, and has the advantage of good compatibility with a piston aluminum alloy auxiliary cylinder.

A unitary die-cast cap for a downlight can includes a base section and a plurality of heat-sink fins. The base section is a plate that includes an interior base-surface, an exterior base-surface, and an exterior wall-surface. The exterior base-surface, which is an opposite surface of the interior base-surface, forms an exterior top-surface of a downlight tubular can. The exterior wall-surface is configured to be positioned in direct attachment to an interior wall-surface of the downlight can. The plurality of heat-sink fins extend from the interior base-surface and form a substantially cylindrical exterior heat-sink wall touching or in close proximity to the interior wall-surface of the downlight can.

The invention provides a short-flow preparation method of micro-sized spherical titanium powder, which belongs to the technical field of powder preparation. The hydrogenation-dehydrogenation technique and the radio frequency plasma body fusion spheroidization technique are integrated, and the titanium hydride powder is selected as raw material; the titanium hydride powder absorbs heat in the high-temperature plasma and quickly decomposes and dehydrogenates, and the titanium hydride power is cracked and crushed in the process of dehydrogenation to produce the micro-sized titanium powder. By using the method, the processes of the dehydrogenation and the spheroidization of the generated titanium powder are finished in one step directly through the plasma processing, and the short-flow preparation of the micro-sized spherical titanium powder is realized. The invention has the advantages that the hydrogenation-dehydrogenation technique and the radio frequency plasma fusion spheroidization technique are combined, so as to shorten the production flow, enhance the production efficiency and reduce the production cost. Simultaneously, the prepared spherical titanium power has fine and even particles, good liquidity, high sphericity and low oxygen content, thereby the requirements of technical industrial production such as the injection figuration, the gel die casting figuration, and the like are satisfied.

An aluminum silicon die cast alloy having a very low iron content and relatively high strontium content that prevents soldering to dies into die casting process. The alloys of the present invention also have a modified eutectic silicon and modified iron morphology, when iron is present, resulting in low microporosity and high impact properties. The alloy comprises 6-22% by weight silicon, 0.05 to 0.20% by weight strontium and the balance aluminum. Preferably, the alloy of the present invention contains in weight percent: 6-20% silicon, 0.05-0.10% strontium, 0.40% maximum iron and most preferably 0.20% maximum iron, 4.5% maximum copper, 0.50% maximum manganese, 0.60% maximum magnesium, 3.0% maximum zinc, balance aluminum. On cooling from the solution temperature, the strontium serves to modify the eutectic silicon structure as well as create an iron phase morphology change if iron is present, facilitating feeding through the aluminum interdendritic matrix. This, in turn, creates a finished die cast product with extremely low levels of microporosity defects. The strontium content also appears to create a non-wetting monolayer of strontium atoms on the surface of a molten casting, preventing die soldering, even at very low iron contents. The alloy may be used to cast any type of object and is particularly suited for casting outboard marine propellers, driveshaft housings, gear case housings, Gimbel rings and engine blocks.