Essays about: "casting defects"

Showing result 1 - 5 of 20 essays containing the words casting defects.

  1. 1. Reprocessing and Characterization of Polybenzimidazole for High-Temperature Polymer Electrolyte Membrane Fuel Cells

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Douglas Björkengren; [2023]
    Keywords : polymer electrolyte membrane fuel cells; PEMFC; HTPEMFC; polymer technology; polymer characterization; reprocessing; recycling; polybenzimidazole; PBI; Technology and Engineering;

    Abstract : A reprocessing method of poly(2,2’-(m-phenylene)-5,5’-bibenzimidazole) (PBI) membranes recovered from the production line of High-Temperature Polymer Electrolyte Membrane Fuel Cells (HT-PEMFC) at Blue World Technologies (BWT) has been developed in order to reduce material loss in the production. Redissolution of scrap PBI membranes in poly(phosphoric acid) (PPA) and phosphoric acid (PA) was successful and the subsequent washing procedure produced PBI that could be redissolved in N,N-dimethyl acetamide (DMAc) and suitable for solution casting of new membranes. READ MORE

  3. 2. Development of acomplex robot structure : Development and analysis of a cast triple traction system for the robotoperating at CERN facilities

    University essay from Jönköping University/JTH, Material och tillverkning

    Author : Gerard Aliana Cervera; [2023]
    Keywords : CERNBot; Traction; Topology optimization; Sand casting;

    Abstract : All devices working in hazardous environments have specific requirements to reduce the intervention of human power as much as possible. The robot that this thesis is focused on is no exception to this rule. READ MORE

  4. 3. Reducing casting defects in pure copper casting. : A Look at the Gating Design of High-Performance Blast Furnace Tuyeres.

    University essay from Jönköping University/JTH, Material och tillverkning

    Author : Paul Idodo; Souhb Fathi Mohammad Rayan; [2022]
    Keywords : ;

    Abstract : .... READ MORE

  5. 4. Automatic Crack Detection in Sand Molds Using Image Processing and Convolutional Neural Networks

    University essay from Uppsala universitet/Signaler och system

    Author : Tim Andersson; [2022]
    Keywords : automatic crack detection; convolutional neural network; image processing; sand casting;

    Abstract : Sand casting is used to manufacture large metal workpieces. The processing is executed by pouring molten metal into a sand mold. During the process, the mold is subjected to mechanical and thermal stress. It is of economic interest to inspect the molds for defects that can affect casting results, in the worst case leading to discarded products. READ MORE

  6. 5. Fabricability of a high alloy tool steel produced with LPBF, with a focus on part geometry

    University essay from Karlstads universitet

    Author : Zulfaqar Abdelamir; [2021]
    Keywords : Addtive Manufacturing; Laser Powder Bed Fusion; High alloy Cold Work Tool Steel; Addtiv Tillverkning; LPBF; Höglegerat kallbearbetningsstål;

    Abstract : Additive manufacturing (AM) is a promising manufacturing process that provides that ability to fabricate components with complex geometries with relatively low lead times compared to other manufacturing processes. This allows for more freedom of design, as prototypes can easily be produced throughout the development process. READ MORE