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Some interesting HIP-engineering innovations are presented on Hot isostatic pressing ' proceedings of the International Conference on.
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The HIP process is used to produce high-quality shape deformation during powder consolidation. An Kalpakjian, In the compaction Neural networks NNs have been successfully step, the powder is transformed into hard parts by applied to model many complex manufacturing applying pressure. Initially, the powder is not fully processes see e. By applying linear or quadratic, are inappropriate. Isostatic the features of a part and process parameters and pressing, where pressure is uniformly applied from outcome for electro discharge machining.

Raj et al. HIP is the applica- extrusion, and metal cutting. Schlang et al. Two comprehensive surveys on Since pressure is applied uniformly, relatively the subject are Udo, ; Zhang and Huang, The NN combines pre-HIP shape dimen- i loading, ii outgassing, iii HIP and iv removal sions, processing parameters and characteristics of the of the exterior container. In the HIP process, a steel superalloy powder to accurately estimate post-HIP container, which is engineered to compensate for the dimensions. During loading, the container is vibrated to partnership with a leading manufacturer of super- reduce porosity and achieve uniform powder packing.

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In industries. In the compaction step, pressure and heat are simultaneously applied until the powder is consolidated to full theoretical density 2. Background and becomes a solid part. As a result, the initial 2.

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Metal powder can be produced by any of several Fig. Steps of the HIP process. Estimation of shrinkage Fig. Shrinkage and shape distortion of solid cylinders during the HIP process. However, actual shrinkage devi- This anisotropic shrinkage and shape distortion, as ates from ideal isotropic shrinkage because of shown in Fig.

Quintus Technologies Hot Isostatic Press TeraPi HIP

One elevated temperatures for extended time periods. Therefore, opti- need for secondary machining and reducing scrap of mizing the HIP cycle in terms of temperature and expensive superalloys. Existing approaches for HIP process modeling estimated accurately.


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If shrinkage is overestimated, additional machining will be required and expensive Traditionally, containers are designed by trial-and- powder will be wasted. If isotropic porosity Atkinson and Davies, Garibov et al. Cherian et al. In an experimental study, Nissen et al. HIP processing parameters. Their model does have Considering these factors Nissen et al.

This model is essentially an empirical adjustment of the isotrophic shrinking 3. Methodology model. First, the local powder density is computed by integrating a weight function over different regions 3.

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Data of the container. Then, the isotropic shrinkage model is used to estimate the shrinkage of different regions On advice of the industrial partner, the project focused of the container. Both the alloy and the shape are the most container. The correction parameters and the weight common ones manufactured by this company. Olevkys et al. Since the data came from a ulating the thickness of the container wall and the end variety of sources, some in software form and some in plates. Numerical Methods in Engineering 25, , Hot Isostatic Pressing L. Delaey and H. Tas editors Elsevier Science B.

Green: Int. PHD thesis december 18 Grenoble 1.

Estimation of shrinkage for near net-shape using a neural network approach | SpringerLink

Vienna October HIP Paris may [8] C. Reporting from:.


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Problem URL. Describe the connection issue. SearchWorks Catalog Stanford Libraries. Hot isostatic processing. Responsibility H. Atkinson and B. Imprint Bristol, England ; Philadelphia : A. Hilger, c