Dictionary
EnglishShort definitionElectrical conductivity indicates how well a material can conduct electrical current. This is characterized by the conductivity coefficient and is measured in siemens per meter (S/m). Materials with very high electrical conductivity, such as copper, are essential for use in electrical cables and circuit boards. Electrical conductivity depends on the freely available electrons in the material.
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Thermal conductivityThermal conductivity describes the ability of a material to conduct or transfer thermal energy. It is determined by the thermal conductivity coefficient “k” and measured in watts per meter-Kelvin (W/m*k). In terms of materials, a distinction is made between materials with high thermal conductivity and insulating materials with low thermal conductivity. The parameter is very important for selecting the right material for the respective component in order to ensure optimum heat transfer or insulation.
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MagnetizabilityMagnetizability describes the ability of a material to develop its own magnetic properties under the influence of an external magnetic field. Materials such as iron, nickel and cobalt, some of which retain their magnetic properties even after the external magnetic field has been removed, are particularly suitable for this process. The magnetizability of a material is characterized by its permeability. High magnetizability makes materials particularly interesting for electrical engineering or magnetic bearings.
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cavityIn modern mechanical engineering, the production of precise and high-quality components plays a central role. One of the key technologies for manufacturing such components is injection molding, a process that is used in numerous industries from automotive to medical technology. An essential part of this process is the cavity in the injection molding tool. But what exactly is behind this concept, and what is the importance of the cavity for the quality and efficiency of production? This article provides a comprehensive insight into the world of cavities in mechanical engineering, explaining their function, design and practical applications, as well as future developments in this field.
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ElasticityElasticity is the ability of a material to return to its original shape when the deformation is removed by a released load. Elasticity is typically measured by the Young's modulus, which expresses the relationship between stress and strain. Materials with high elasticity, such as rubber, can return to their original shape even after high stress or deformation without compromising their mechanical properties.
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FluidityFluidity describes the ability of a material to deform or flow under certain conditions. In the manufacturing industry, flowability is crucial for processes such as casting, injection molding and extrusion, as it influences the formability and surface quality of the end product. High flowability allows the material to be evenly distributed in complex shapes and reduces the occurrence of defects such as shrinkage cavities or cracks. From an academic point of view, flowability depends on factors such as temperature, viscosity and shear stress. In practice, optimizing flowability is essential to ensure efficient production processes, enable material savings and maximize product quality, which ultimately strengthens a company's competitiveness.
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ForgeabilityThe forgeability of a material comprises the ability to deform the material plastically using pressure and heat without breaking it. Individual materials, such as aluminum or steel, can be forged particularly well and thus processed into geometrically complex shapes. Forgeability essentially depends on the chemical composition, the temperature and the specific processing conditions of the metal.
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