Stamping

About: Stamping is a research topic. Over the lifetime, 22501 publications have been published within this topic receiving 83554 citations.

Ink stamping systems and methods

Abstract: A system for forming artistic ink impressions. A case stores ink stamping accessories and/or allows large surface area stamps to be used.

Method of and apparatus for the fine cutting (punching) of articles

Abstract: Fine die stamping of workpieces from sheet metal is effected by clamping the workpiece between a die plate and guide plate, supporting the portion of the material to form the article by an ejector which is displaced along with the punch, and driving the supported portion of the material into a hole in the die plate having flanks tapered away from the guide plate and punch so that swaging occurs on the separated portion with or upon its separation from the balance of the workpiece material.

Method for producing a metal insert to protect a leading edge made of a composite material

Abstract: The invention relates to a method for producing a metal insert for protecting a leading or trailing edge of a compressor vane of an aeronautical machine made of a composite material, by stamping sheets (1) and diffusion bonding between said sheets, characterised in that said method comprises the steps of: initially shaping the sheets by stamping in order to approximate said sheets to the shape of the suction side (1E) and the pressure side (1I) of said insert; producing a core (3) shaped like the inner cavity of the metal insert to be manufactured, one of the surfaces thereof reproducing the inner shape of the suction side of the insert and the other surface reproducing the inner shape of the pressure side of the insert; positioning said sheets around said core and securing the assembly; applying a vacuum and sealing the assembly by bonding; assembling the assembly by hot isostatic compression; cutting the assembly to extract the core (3) and separate the insert; producing the outer profile of the insert by a final machining step.

Investigations on stamping of C/PEEK laminates: Influence on meso-structure and macroscopic mechanical properties under severe environmental conditions

Abstract: This study was aimed at addressing the influence of stamping on the mechanical performance (tensile, in-plane shear and inter-laminar shear) of fabric reinforced thermoplastic laminates under severe conditions. The effects of processing have been discussed at different levels: influence on the micro-structure (porosity and mean free path) and meso-structure (reinforcement and matrix distribution), changes in the matrix properties as well as in the fiber/matrix interface. The obtained results and the SEM observations suggest that these changes are closely associated with the macroscopic mechanical behavior of laminates. Stamping proved to be a re-consolidation process, and the high stamping pressure promotes two primary mechanisms: re-compaction of the fiber network and migration of melted matrix. These mechanisms significantly influence the meso-structure properties (better interlaminar adhesion and fiber/matrix bonding), resulting in the improvement of the material properties.

Investigation of the reduction of mouldboard ploughshare wear through hot stamping and hardfacing processes

Abstract: The effects of the hot stamping process and different hardfacing techniques, such as shielded metal arc welding (SMAW) and gas metal arc welding (GMAW), on the abrasive wear of ploughshares were investigated under field operational conditions. The abrasive wear losses were determined by measuring the weight and dimension changes before and after tillage. The wear losses of hot-stamped and hardfaced ploughshares were less significant than those of the conventionally heat-treated ploughshare specimens used under field conditions. Conventional heat treatment and hardfacing by the SMAW process decreased the wear weight losses by 46.31% and the dimensional losses by 86.77% in comparison to the performance of the conventionally heat-treated ploughshares. These values were 36.90% and 88.17%, respectively, for conventional heat treatment and hardfacing by the GMAW process. There were no statistically significant differences between the SMAW and GMAW hardfacing processes in terms of wear losses. Hot stamping and heat treatment applications on the ploughshare also decreased wear losses by 19.03% and dimension losses by 13.82% in comparison to the conventional heat treatment process. According to the results of the overall study, hot stamping and hardfacing by SMAW and GMAW processes can be recommended as efficient solutions for decreasing the wear losses of ploughshares.