16 results about "Hydroforming" patented technology

This invention discloses a hydraulic forming device for a cab roof crossbeam, belonging to the field of hydraulic forming technology. It aims to solve the technical problem that due to the complex structure and numerous curvatures of the crossbeam, it is difficult to completely drain the forming fluid at low water levels. The device includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a base, with a fixed template installed in the inner cavity of the base. The top of the fixed template has a mold closing groove, a pressure groove, and a cavity. The moving mold assembly includes a lifting seat, with a moving template installed at its bottom. The bottom of the moving template has a mold closing plate, a pressure plate, and a forming fluid cavity. A punching assembly is arranged inside the moving template, including a lifting platform above the moving template and a draining rack inside the forming fluid cavity. The bottom of the lifting platform is connected to multiple round-hole punches and multiple square-hole punches, and the draining rack has a drainage channel inside its cavity. This invention not only achieves complete drainage of the forming fluid but also provides the advantage of continuous punching processing of the crossbeam.

This invention discloses an ultra-high strength hydroformed structural component and its manufacturing process, comprising the following steps: First, an aluminum-silicon coated aluminized hot-formed steel pipe is selected to form a welded pipe, and the substrate of the structural component is obtained by hydroforming; Second, a pretreatment system is established for the substrate before heating, and the substrate from step one is transferred into the solution in the pretreatment system and immersed; Third, the pretreated substrate is placed in a heating furnace at - degrees Celsius, so that the solution forms carbides under high temperature, and the substrate is removed after being heated to the set temperature; Fourth, the substrate from step three is placed in a mold with a water flow cooling function, and the upper and lower molds are pressed together to quickly cool and quench the pipe. This invention relates to the field of industrial production technology. This invention can form carbides in the substrate under high temperature through immersion in the solution, without forming oxides, which greatly improves the structural strength of the structural component.

A novel automotive suspension control arm includes a control arm body. The upper and lower ends of the control arm body are respectively connected and fixed to a ball joint pin assembly and a bushing assembly. The middle section of the control arm body is connected and fixed to a central bushing assembly. The control arm body is an integral arc-shaped hydroformed tubular component. The height of the tubular body at both ends is less than the height of the middle section. The cross-section of the end connected to the bushing assembly is a variable cross-section, wider at both ends and thinner in the middle. The control arm body is manufactured using bending, shrinking, pre-forming, internal high-pressure forming, and laser cutting processes, resulting in a structure different from traditional stamping and welding. This control arm product offers stable dimensional accuracy, a simple manufacturing process, and solves the problem of ensuring welding gap in stamping and welding structures.

Disclosed herein are methods for hydroforming a handpan shell. Hydroforming a handpan shell using a mold complementary to the intended shape of the handpan shell can improve the quality and performance of the handpan while reducing the time and cost needed to form features into the handpan that allow musical tones to be produced.

The invention relates to the technical field of automobile part forming, in particular to a precise cold forming method and device for an ultrahigh-strength steel special-shaped section automobile safety part. Continuous rolling, high-frequency induction welding, multi-roller correction, precise punching and multi-direction bending forming are organically combined; integrated and continuous precision production from plates to complex space pipe fittings is achieved, the defects that in a traditional segmented tailor-welding process, the working procedures are tedious, weld joints exist, the hydraulic forming technology efficiency is low, and springback is difficult to control are effectively overcome, and therefore it is guaranteed that products have excellent structural integrity and dimensional precision, and the production efficiency is improved. The production efficiency and the material utilization rate are remarkably improved, and the production cost is reduced.

This invention relates to the field of metal plastic forming technology, and particularly to a W-shaped sealing ring hydraulic external expansion forming device and method. The device includes a primary and a secondary mold assembly. The core of the primary mold assembly lies in its unique "two concave and one convex" transition structure, which utilizes a large radius of curvature to guide the flow of difficult-to-deform materials and forcibly forms an intermediate boss as a self-generated positioning reference for the secondary machining, completely eliminating clamping eccentricity. The secondary assembly employs removable pads in conjunction with elastic reset elements to construct a dynamic mold closing mechanism, achieving a composite process of "low-pressure hydraulic pre-expansion positioning and high-pressure precision shaping," effectively overcoming the significant springback problem of pure hydraulic forming. By decomposing complex forming into two controllable steps, it significantly solves the problems of cracking and dimensional inconsistencies in thin-walled high-temperature alloy parts, greatly improving the coaxiality, wall thickness uniformity, and fatigue life of the finished product. It is suitable for the efficient and precise manufacturing of high-end sealing components for aero-engines.

The application provides a part rubber bag hydraulic forming method, and belongs to the technical field of rubber bag hydraulic forming. The method comprises the following steps: firstly, designing a preliminary process model suitable for rubber bag forming of an irregular complex hyperboloid part with large deformation; secondly, designing a final process model suitable for rubber bag forming of the part with resilience; thirdly, determining an unfolded raw material according to the final process model with resilience; then, performing rubber bag hydraulic forming to form a process model structure workpiece; if the raw material of the part is an aluminum alloy, performing quenching heat treatment on the process model structure workpiece, and then using a cutting die to correct the shape; finally, fixing the process model structure workpiece on the cutting die, removing the process allowance, and cutting the part. Through the method, the part shape accuracy and the part surface quality can be improved, the part consistency can be improved, and the waste product rate can be reduced.

A method for integrally forming a head tube and down tube of a bicycle frame, which involves the use of a single metallic material (1) and the application of various metalworking methods to integrally form the head tube (12) and down tube of the bicycle frame. To meet the structural strength requirements of the head tube (12) and down tube (23), several metalworking processes are employed, including forging, tube drawing, tube shrinking, and hydraulic forming. The method reduces welding and intermediate assembly and improves the precision and structural strength of the product. The method also saves material and effectively reduces production management and material costs, thereby significantly increasing the competitiveness of the products.

The invention discloses a manufacturing method and device for a hot-formed high-strength steel pipe beam. The manufacturing method comprises the following steps that firstly, hot-formed steel with an anti-oxidation coating on the surface is selected as a raw material; 2, forming the tubular blank by adopting an internal high-pressure forming process to obtain a tubular beam close to a target shape; thirdly, the tubular beam obtained after hydraulic forming is heated to the temperature ranging from 650 DEG C to 950 DEG C; and fourthly, the heated pipe beam is pressurized and shaped, meanwhile, rapid cooling is conducted, and phase change strengthening is completed. According to the method, the mechanical property uniformity and the surface integrity of the pipe beam piece after hot forming are effectively improved, surface oxidation is not generated, the hydrogen embrittlement sensitivity is reduced, and the dimensional stability is guaranteed. And meanwhile, the technological process is compact, the production efficiency can be improved, and technical support is provided for large-scale manufacturing of high-safety light-weight structural parts.

A forming assembly for forming a wick is disclosed. The forming assembly includes a tube expandable to an expanded shape. A wick mesh is configured to be wrapped around the tube. The forming assembly further includes a sheath positionable around the tube and the wick mesh. The tube and sheath are configured to compress the wick mesh and form the wick upon expansion of the tube to the expanded shape.

The present application relates to the technical field of metal plastic forming, and particularly relates to a W-shaped sealing ring hydraulic outer-expanding forming device and method. The device comprises a first-order and a second-order die assembly, and the core lies in a unique 'two concave and one convex' transition structure of the first-order cavity, which guides the flow of difficult-to-deform material by using a large curvature radius, and forcibly forms an intermediate boss as a self-generated positioning reference for the second-order processing, thereby completely eliminating clamping eccentricity. The second-order assembly adopts a removable pad matched with an elastic reset element to build a dynamic die closing mechanism, realize a composite process of 'low-pressure liquid auxiliary pre-expanding positioning and high-pressure machine precise sizing', and effectively overcome the large springback problem of pure hydraulic forming. The complex forming is decomposed into two controllable steps, thereby significantly solving the problems of rupture and size inconsistency of high-temperature alloy thin-walled parts, greatly improving the coaxiality, wall thickness uniformity and fatigue life of the finished product, and being suitable for efficient and precise manufacturing of high-end sealing parts of an aero-engine.

The invention relates to the technical field of new energy automobiles, and discloses a hydraulic forming method of a liquid cooling plate for a new energy automobile battery, comprising the following steps: S1, designing and manufacturing a mold; s2, mold installation; s3, pre-pressing is carried out; s4, injecting and sealing a liquid medium; s5, pressurizing and forming; and S6, pressure relief and part taking-out are conducted, liquid serves as a force transmission medium, pressure can be more evenly transmitted to all parts of the metal plate, the problems of uneven pressure, uneven material flowing and the like possibly occurring in a traditional punching process are solved, and therefore the geometric dimension precision and the surface quality of the liquid cooling plate body are greatly improved; the mold comprises the first water injection port, the second water injection port and the liquid flowing groove, it is ensured that a mold cavity can be smoothly filled with a liquid medium, the forming accuracy is further improved, in the hydraulic forming process, the metal plate is subjected to plastic deformation under the action of liquid pressure, and complex shapes and uniform wall thickness distribution can be formed.

This invention discloses a method for forming ultra-thin stainless steel pipe fittings, relating to the field of stainless steel pipe production and processing technology. It aims to solve the problems of branch pipe rupture and inner wrinkling during the current hydroforming process of ultra-thin stainless steel pipe fittings. The method includes: S1: billet preparation and pretreatment; S2: mold and sealing assembly; S3: staged collaborative forming; S301: pre-expansion and mold-fitting stage, where the internal pressure is increased to 0.8 MPa at a rate of 0.1 MPa / s and maintained stably; S302: main forming precise material replenishment stage, employing a gradient pressure increase strategy; S303: forming stress release stage, maintaining a stable internal pressure of 6-7 MPa for 10 seconds to ensure the billet completely fits the mold cavity, followed by a staged pressure relief method. This invention, through the application of a nano-lubricating film coating on the inner wall of the billet, low-temperature preheating treatment, stress-dispersing mold design, and the collaborative control of gradient pressure increase and real-time monitoring and material replenishment during the main forming stage, achieves effective dispersion of tensile stress concentration at the top of the branch pipe of the ultra-thin stainless steel pipe fitting and precise material replenishment, significantly reducing the risk of rupture.

To control a thickness of a workpiece with high accuracy.SOLUTION: A mold is used to mold a pipe-like workpiece and has at least one wall part extending in a longitudinal direction. On an inner surface of the wall part, a supply port for supplying a lubricating liquid is provided in a center area as seen in a width direction orthogonal to the longitudinal direction of the wall part of a plane part sandwiched by corner parts of the mold.SELECTED DRAWING: Figure 3

The utility model belongs to the field of plate forming equipment, and particularly relates to large multi-rib deep-cavity airplane sheet metal part pre-storage liquid-filling forming equipment. Comprising a lower die, an upper die, a guide column, a plurality of guide mechanisms, a plurality of pressure-bearing assemblies, a sealing strip, a high-pressure liquid filling connector assembly, a material storage module I and a material storage module II. The lower die comprises a part reinforcing rib forming area and a part flange edge forming area, the reinforcing rib forming area is divided into a plurality of concave cavities, and when a part is formed, each concave cavity is matched with the material storage module I and the material storage module II; the lower die comprises an edge pressing area, and the lower die and the edge pressing area of the upper die jointly clamp a part during use, so that the edge pressing effect is achieved; a guide mechanism mounting position is arranged on the lower die and is used for mounting a guide mechanism assembly to form guidance with the guide surface of the upper die; the lower die is provided with a pressure-bearing block mounting position for mounting a pressure-bearing block assembly and adjusting a die assembly gap between the upper die and the lower die so as to control the edge pressing effect; a guide post is fixed on the upper end surface of the lower die and is used for guiding when the upper die and the lower die are closed; the upper die comprises an edge pressing area matched with the lower die, the edge pressing area and the edge pressing area of the lower die jointly clamp a part during use, and a liquid chamber space is formed between a plate and the upper die; a sealing groove is formed in the upper die edge pressing area and used for installing a sealing strip, and the sealing groove is attached to the upper surface of a plate when used and plays a sealing role between the upper die edge pressing area and the plate. The upper die further comprises a pressure-bearing surface which is attached to a pressure-bearing block mounted on the lower die during die assembly and is used for protecting the molded surface of the die and adjusting a die assembly gap; the upper die comprises a liquid filling port and a liquid filling outlet and is used for injecting a pressure medium into the liquid chamber and increasing the pressure of the liquid chamber; and the liquid filling port is connected with the high-pressure liquid filling joint. According to the utility model, the problem of material shortage at the root of the reinforcing rib is solved; and a flexible storage module is designed, so that the transition cost is saved.