508 results about "Hydroforming" patented technology

A breathable absorbent article has at least one of a topsheet, an absorbent core, an optional distribution layer or a backsheet that comprises at least one to layer of a resilient, three dimensional liquid impervious polymeric film having apertures. The apertures form capillaries which are disposed at multiple directions, and/or have different diameters and lengths to create a response surface that is proportional to the pressure applied by the user's body, volume distribution of bodily fluid discharged by the user, the location of the discharge with respect to the position of the article, or a combination thereof, while the article is in use. The polymeric film can be formed by various processes, for example, vacuum forming or hydroforming methods.

A hydraulic apparatus for forming a composite pipe with stainless steel liner is composed of core rod, left and right expanding ehads fixed respectively to both ends of said core rod, two self-fastened sealing rings for left and right expanding heads, and the fixers at the ends of said expanding heads. Its forming technology is also disclosed.

The invention discloses a production method of an environment-friendly and energy-saving type regenerative magnesia-carbon brick, comprising the following production steps: (1) sorting and crushing waste magnesia-carbon bricks; (2) powdering with weak acid aqueous solution; (3) carrying out high-temperature drying to dehydrate and electromagentic resonance to homogenize; (4) carrying out crushing, particle shaping, iron removing and screening; (5) mixing materials: mixing regenerative aggregates, fine powder and newly-added and electrically-fused magnesite aggregates, and fine powder; and (6)forming. The mixed material is added with a bonding agent, is treated by high-speed constant-temperature mixing, hydraulic forming and electric heating drying and obtains a regenerative magnesia-carbon brick product. The production method solves the problem that the product in the prior art has unstable performance, can retain usable components such as electrically-fused magnesite, crystalline flake graphite and the like in the raw material furthest, has high recovery and utilization rate and is energy-saving and environment-friendly.

For forming a tubular work into a shaped hollow product by using hydroforming process, a method and a device are described. In the method, female and male dies are prepared. The female die has a longitudinally extending cavity which has a polygonal cross section when receiving the male die. The tubular work is placed into the cavity of the female die. The interior of the tubular work is then fed with a hydraulic fluid, and the pressure of the fluid is increased to a given level. The given level is smaller than a critical level that causes a bulging of the tubular work. The male die is then pressed against the tubular work to deform the same while keeping the hydraulic fluid at the given level, thereby forming a shaped hollow product that has a polygonal cross section that conforms to that of the cavity. The pressing work is continued until a circumferential length of the shaped hollow product becomes shorter than that of the tubular work.

The invention provides an automatic hydraulic molding machine for pulverized coal. The machine mainly comprises a frame, a molding mechanism, a feeding mechanism, a pushing mechanism, a hydraulic control system and an electrical control system, wherein the pushing mechanism is arranged on one side of the frame; the molding mechanism is arranged on the upper part of the pushing mechanism through apillar; the feeding mechanism is arranged on the frame; and the feeding mechanism mainly comprises a feeding cylinder, a storage hopper, a feeding cart, a conveying plate and a feeding belt, the storage hopper is arranged on the frame through a mounting bracket, the feeding belt is arranged at the opening of the upper end of the storage hopper, the feeding cart is arranged on the lower side of the storage hopper, and the feeding cart is connected with the feeding cylinder. The device optimally integrates the feeding mechanism, the molding mechanism and the pushing mechanism, and is cooperatedwith constant material feeding and discharging molded blocks to ensure that the whole production process does not require staff on duty, thus the device has the advantages of high automation degree, good production continuity performance and high production efficiency improved by over 2 times, and can be widely applied to industrial production.

A punch assembly used with a hydroforming die includes a punch cylinder for mounting to the hydroforming die and having a movable rod. The punch assembly also includes a punch for piercing an opening in a tubular member disposed in the hydroforming die. The punch assembly further includes a quick change assembly interconnecting the rod of the punch cylinder and the punch for allowing the punch to be removably attached to the punch cylinder.

A Moineau stator includes a tube (10) having lobes (3) arranged in a configuration which is adapted to interact with a rotor and formed through a hydroforming process.

By using a hydraulic forming device 20, a metal plate body 11 is placed on a support section 21b with a hollow section 21a formed on a lower die 21 filled with hydraulic fluid A. Subsequently, a blank holder 23 is lowered to clamp the peripheral edge section of the placed metal plate body 11 with the support section 21b. Then, the upper die 22 is lowered relative to the lower die 21 to pressedly deform the central section of the metal plate body 11 and to compress the hydraulic fluid A to increase the fluid pressure. A rib-like convex section 12 is transferred onto the metal plate body 11 by the increased fluid pressure of the hydraulic fluid A and a formed section 22a. Further, the fluid pressure of the hydraulic fluid A is kept for a predetermined time. Then, the increased fluid pressure of the hydraulic fluid A is released.

A bicycle crank arm is provided that is a light, highly strong, highly rigid and highly designed in a complex shape. The bicycle crank arm has a crank axle mounting end portion, a central crank body portion and a pedal mounting end portion. The hollow bicycle crank arm is preferably a one-piece, unitary member that is produced by a tube hydroforming method. The hollow bicycle crank arm has a crank axle attachment part located within the crank axle mounting end portion and a pedal spindle attachment part located within the pedal mounting end portion. The mounting end portions have a crank axle hole and a pedal spindle hole, respectively, with outside diameters that are smaller than the attachment parts, respectively.

A method for shaping an aerosol container (10) to a desired body contour. A container body (12) is formed into a cylindrical shape and installed into a mold (30) whose inner surface defines the desired body contour. A bladder (74) is fitted onto a tool (50) insertable into an open end (M) of the container body. Once the tool is inserted, the bladder is inflated with a hydraulic fluid. Pressurizing the bladder forces the bladder against a sidewall of the body forcing the body outwardly and deforming it against the inside of the mold. After the container body is shaped, the bladder is de-pressurized and the tool withdrawn leaving the container with a defined body contour. The hydraulic fluid with which the bladder is pressurized is, at all times, contained within the bladder and does not contact the container sidewall so no subsequent drying of the container is required after the shaping process is complete.

The invention discloses a method for machining an all-metal screw pump stator. The method comprises the following steps of: 1) machining a stator blank, so that a central hole for forming a stator inner cavity is formed in the stator blank; 2) forming the stator inner cavity by an electrolytic process; 3) polishing the stator inner cavity; and 4) performing surface-hardening treatment on the stator inner cavity. According to the method, the problem of difficulty in machining of the all-metal screw pump stator is solved by combining polishing treatment and surface-hardening treatment by adopting the electrolytic process. The method has obvious advantages on the machining of materials which are difficult to machine and parts with complex shapes or thin-wall parts, and has the characteristics of wide range of the machined materials, high production efficiency, high forming accuracy, capability of recycling electrode assemblies and the like. By the method, the technical blockade of hydraulically-formed all-metal screw pump stators which are used abroad is broken through, and a new method for manufacturing the all-metal screw pump stator is opened up, so that the machining difficulty of the all-metal screw pump stator is reduced effectively, and the machining efficiency is improved.

A method for coupling ends of two insulated conductors includes coupling an end portion of a core of a first insulated conductor to an end portion of a core of a second insulated conductor. At least a part of the end portions of the cores are at least partially exposed. Electrically insulating material is placed over the exposed portions of the cores. An inner sleeve is placed over end portions of the two insulated conductors to be coupled. An outer sleeve is placed over the inner sleeve. There is an open volume between the inner sleeve and the outer sleeve. The inner sleeve and the outer sleeve are coupled to jackets of the insulated conductors. A pressurized fluid is provided into the open volume between the inner sleeve and the outer sleeve to compress the inner sleeve into the electrically insulating material and compact the electrically insulating material.

A hydraulic pressing system for forming a workpiece and its pressing method are disclosed. The part A to be expanded maximally and a part B linked to said part A and to be bent are first expanded and said part B is then bent inward by upper and lower dies to obtain the beautiful contour with minimal curvature radius.

A preform with edges overlapped and jointed each other and first and second outer members for forming outer surfaces of a hydroformed product, and reinforcement members that are jointed to the first and second outer members to form reinforcement ribs that divide a hollow cross section of the outer surfaces, the reinforcement members having dimensions capable of suppressing elongation in a tensile direction due to a tensile force that develops during hydroforming.

Method for preparing a golf club shaft, set of shafts, or golf clubs having shafts which have been produced by a process that includes a hydroforming step. By utilizing a hydroforming prosses step, a metal or metal matrix composite golf club shaft can be formed into a variety of configurations or shapes heretofore not possible and can include hydroformed ornamental design features.

A method of performing manufacturing operations on a workpiece made of a high strength alloy is disclosed in which a local area of a workpiece is heated to micro-structurally soften the local area. The local area of the workpiece becomes softened and more ductile. A manufacturing operation involving deformation of the heat softened area is performed with the metal in the heat softened region being more ductile and having less strength than the surrounding portions thereof. Manufacturing operations may include riveting, clinching, hydro-forming, and magnetic pulse joining.

An apparatus and method for securing a handle to a door includes a first clip fastened to the door, a second clip fastened to the door and a handle clamped to the door by the first and second clips. The clip has a flat surface with an aperture therethrough and two wings at one end. A bent or beveled portion at the other end of the flat surface allows the clip to clamp the inner wall of the handle. A fastener, such as a screw, is placed through the aperture in the clip and into the exterior surface of the door to secure the clip and the handle to the door.