48 results about "Explosive forming" patented technology

The invention provides a high hard, strength and tough nano-crystal metal bulk material and a preparation process thereof. The metal bulk material comprises an aggregate of metal nano-crystal grains, wherein an oxide, nitride, carbide, boride or the like of a metal or semimetal exists as a crystal grain growth inhibitor between and / or in the nano-crystal grains. The respective fine powders of nano-metal bulk material-forming components are mechanically alloyed (MA), using a ball mill or the like, thereby preparing nano-metal powders. Then, hot forming-by-sintering treatment such as spark plasma sintering, extrusion and rolling or explosive forming is applied to the powders to obtain a high hard, strength and tough nano-crystal metal bulk material.

The invention relates to a device for explosive forming of workpieces, comprising an ignition chamber and an ignition mechanism, wherein an explosive agent can be ignited at an ignition location in the ignition chamber using the ignition mechanism, and an ignition chamber outlet is provided, to be improved such that the ignition mechanism has a longer service life. The aim is achieved by a device wherein an impact breaker is provided in the propagation path (37) of the detonation wave.

The invention is intended to improve a tool arrangement and method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a molding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by means of ignition of an explosive gas mixture, to the effect that the tool arrangement and the method are suitable and simplified for mass production. This object is solved by means of a tool arrangement and a method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a molding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by means of ignition of an explosive gas mixture, in which the explosive gas mixture is provided at least partially above the surface of the liquid before the ignition.

With the invention, a method and a device for explosive forming of work pieces, in which at least one work piece is arranged in at least one die and there deformed by means of an explosive to be ignited, is to be improved, in that an ignition mechanism that is technically easy to handle is produced with the shortest possible setup times, which permits the most precise possible ignition of the explosive with time-repeatable accuracy. This task is solved by a method and device, in which at least one work piece is arranged in at least one die and deformed there by means of an explosive being ignited, in which the explosive is ignited by means of at least one energy beam.

An aircraft nacelle and method of fabricating a monolithic lipskin of the nacelle. The nacelle may include a fan cowl, a bulkhead, and the monolithic lipskin. The lipskin may be formed by spin-forming or explosive forming an annularly-shaped plate onto a mandrel, and machining or chemically-milling integrated stiffeners or other protrusions and attachment tabs into an inner mold line (IML) of the lipskin. The machining or chemical milling may occur before or after the spin-forming or explosive forming. The stiffeners may have a spiral or circumferential configuration. An attachment tab extending from the IML may attach to the bulkhead, such that an outer mold like (OML) of the lip-skin is not disrupted by mechanical fasteners attaching the lipskin to the bulkhead.

The invention is intended to improve a method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a moulding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by ignition of an explosive gas mixture, to the effect that the method is suitable and simplified for mass production. This object is solved by a method for explosive forming of a workpiece by means of gas explosion, in which the workpiece is arranged in a intake area of a moulding tool, wherein the intake area is at least partially filled with liquid and the explosion is triggered by means of ignition of an explosive gas mixture, in which the explosive gas mixture is provided at least partially above the surface of the liquid before the ignition.

The invention relates to a method for constructing explosive-forming pile, which comprises: first, digging one horn well mouth at the soil; then at the center of well mouth, downwards drilling vertical tile hole to preset depth; arranging integrated drug pack into hole bottom; arranging sleeve at the center of borehole; filling bar drug pack into sleeve; filling mixed concrete or cement sand pulp between the borehole and sleeve; covering steel plate at the open of borehole; stacking carrier matter on the steel plate; exploding the drug pack and bar drug pack, after 3-8 hours when the filled concrete or cement sand pulp are poured, to form tile post and tile head with concrete protective layer; pouring concrete into tile head and tile post to form explosive-forming pile. The invention has simple process and better forming effect without reducing radius and sink hole.

The invention discloses an explosive forming projectile warhead aiming device which is suitable for explosive forming projectile warhead test aiming. The aiming device comprises an optical aiming mirror housing, a fixing seat, a U-shaped groove, a rectangular guiding rail and a base, the aiming device is characterized by further comprising an objective lens, a converging lens, a relay lens and aneyepiece group, wherein the objective lens, the converging lens, the relay lens and the eyepiece group constitute an optical path system from left to right, the entire optical path system is installedin the aiming mirror housing in a sealed mode, the inner concave face of the U-shaped groove is downward, the aiming mirror housing is fixedly connected with the upper surface of the U-shaped groovethrough the fixing seat, the shape of the rectangular guiding rail is matched with the U-shaped groove and is located in the inner concave face of the U-shaped groove to be closely attached to the concave face, and the rectangular guiding rail is located on the upper surface of a trapezoidal base and is fastened by screws. Under the test condition of the high blast height (charging caliber of 1000times) of an explosive forming projectile warhead, the aiming device is used for aiming at an impact point of an explosive forming projectile, thus the impact accuracy of the explosive forming projectile can be significantly improved, long-distance off-target is avoided, the test efficiency is improved and the test cost is saved.

The invention discloses a composite explosive molding process. In order to solve the problem that the pouring explosives cannot realize the orderly assembly of particles, the invention adopts the method of mechanical implantation to implant oxidant, reducing agent particles or composite explosives into the mixed explosives to prepare high-energy pouring PBX explosives, pyrotechnics, and propellants Wait. While achieving the purpose of orderly assembly of particles, the invention solves the problem of air bubbles in mechanical implantation through a vacuum process; by controlling the implantation time, it ensures that there is no crack defect in the charge after implantation. The molding process disclosed by the invention is divided into five steps: determining the implantation time, preparing the implanted particles, preparing the matrix, implanting the particles, orderly assembling the particles, and curing at high temperature. The invention is mainly applied in the fields of explosives and explosives.