摘要:
A device for hydro-mechanical forming of articles comprising, all mounted coaxially, a multiplier (1), a power cylinder (2) and a demultiplier (3). On the rod of the power cylinder (2) is mounted coaxially to the latter a container (20) provided with a chamber (21) in which is mounted a matrix (22) for the blank, and which at the moment of forming the blank is filled with a plastifying liquid. Between the container (20) and the rod (25) of the demultiplier (3) is mounted a punch (34) sealing the chamber (21) during the forming of the blank. The hydraulic line (29) connecting the low-pressure chamber (26) of the multiplier (3) to a source (12) for the working liquid and to a receiver (13) for its discharge is provided with a non-return valve (30), intended to prevent the working liquid flow from the low-pressure chamber (26) of the demultiplier (3) to the receiver (13) for the working liquid discharge, and with an accumulator (31) the hydraulic chamber (32) of which is connected to a section (33) of the hydraulic line (29), which is located between the non-return valve (30) and the low-pressure chamber (26) of the demultiplier (3).
摘要:
L'invention vise un dispositif et un procédé de formage par emboutissage d'une feuille métallique (14) incurvée. Ledit dispositif comportant : - un poinçon (11) en matériau déformable et sensiblement incompressible, - un marteau (12), adapté à percuter le poinçon (11) selon l'axe longitudinal (Z), - des moyens de génération d'un champ magnétique (13), adaptés à imprimer au marteau (12) une vitesse (Vz) supérieure à une valeur prédéterminée selon cette direction (Z). Le dispositif comporte une matrice (10) de forme prédéterminée, sensiblement à symétrie de révolution autour d'un axe longitudinal (Z) et le poinçon (11) présente une symétrie de révolution autour de l'axe longitudinal (Z), adapté à être disposé face à la matrice (10). Le poinçon (11) présente une dimension longitudinale (H) du même ordre de grandeur que sa dimension (R) perpendiculaire à l'axe longitudinal (Z).
摘要:
A method for repairing a crushing device [1, 31, 41] or other device configured to comminute material includes the steps of removing at least one first insert [61] from a portion of a crushing body [3, 4, 5, 35, 36, 43, 45, 51] such that at least one opening [63] is formed in the portion of the crushing body, positioning at least one second insert [67] in the at least one opening [63] formed by the removing of the at least one first insert [61], positioning a force application mechanism [71] adjacent to the at least one second insert [67] and the portion of the crushing body, and actuating the force application mechanism to deform the portion of the crushing body to attach the at least one second insert [67] to the portion of the crushing body. The one or more first inserts [61] may be damaged and the one or more second inserts [67] may be used to replace the one or more damaged first inserts [61]. The force application mechanism [71] is preferably explosive material. A method of forming a wearable surface [4, 35, 36, 45, 54] is also disclosed.
摘要:
A method of making a wearable surface for a device configured for material comminution includes positioning inserts adjacent to a first metal structure positioning a second metal structure adjacent to the inserts and the first metal structure such that there is a gap between the second metal structure and the first metal structure, and positioning at least one explosive adjacent to the second metal structure. The one or more explosives are ignited adjacent to the second metal structure to cause a portion of the first metal structure to deform to attach the inserts to the first metal structure. The wearable surface may be, for example, a semi-autogenous layer of a roller or may be a wearable surface of a crushing body of a crushing device configured to impact, crush, or grind material such as rock, minerals, ore or agglomerated material. Devices that include such a wearable surface are also disclosed.
摘要:
Provided in one embodiment is a method of joining one or more articles together using pressurized fluid to deform a bulk-solidifying amorphous alloy material and form a mechanical interlock between the respective surfaces joined together.
摘要:
An apparatus and method of uniformly heating, Theologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool in combination with an electromagnetic force generated by the interaction of the applied current with a transverse magnetic field. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined "process temperature" between the glass transition temperature of the amorphous metal and the equilibrium melting point of the alloy in a time scale of several milliseconds or less, at which point the interaction between the electric field and the magnetic field generates a force capable of shaping the heated sample into a high quality amorphous bulk article via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time scale of less than one second.