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The HIP process subjects a component to both elevated temperature and isostatic gas pressure within a high-pressure containment vessel, unlike the cold isostatic pressing (CIP), where the component is maintained at room temperature. [1] The pressurizing gas most widely used is argon. An inert gas is used so that the material does not chemically ...
Hot isostatic pressing (HIP) can further increase the density of these parts and produce components more economically than cast or wrought parts, but the porosity present in the material degrades fatigue and fracture properties. The BE approach has been used to produce valves for the Toyota Altezza, golf club heads and softball bats. [4]
A commonly used second external force is pressure. Sintering performed by only heating is generally termed "pressureless sintering", which is possible with graded metal-ceramic composites, utilising a nanoparticle sintering aid and bulk molding technology. A variant used for 3D shapes is called hot isostatic pressing.
Cemented carbides are a class of hard materials used extensively for cutting tools, as well as in other industrial applications. It consists of fine particles of carbide cemented into a composite by a binder metal. Cemented carbides commonly use tungsten carbide (WC), titanium carbide (TiC), or tantalum carbide (TaC) as the aggregate. Mentions ...
Hot pressing is a high-pressure, low-strain-rate powder metallurgy process for forming of a powder or powder compact at a temperature high enough to induce sintering and creep processes. [1] This is achieved by the simultaneous application of heat and pressure. Hot pressing is mainly used to fabricate hard and brittle materials.
A rotating non-consumable tool is plunged into overlapping sheets Automotive industry Hot pressure welding: HPW Metals are pressed together at elevated temperatures below the melting point in vacuum or an inert gas atmosphere Aerospace components Hot isostatic pressure welding: 47: HPW
Processes such as ECAE and HPT have also been used to consolidate metal powders and composites without the need for the high temperatures used in conventional consolidation processes such as hot isostatic pressing, allowing desirable characteristics such as nanocrystalline grain sizes or amorphous structures to be retained. [24] [25]
Examples include a home oven with a bowl of water and the pilot light on, a box with a bowl of hot water in it (the water is replaced periodically to maintain warmth), or a counter top proofer (an electric appliance) designed for home use. A dough retarder is a refrigerator used to control the fermentation of yeast when proofing dough. Lowering ...