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Porosity Casting

 

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Metal casting involves the shaping of free-flowing liquid metals through the use of dies, molds or patterns.
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  • Solving Porosity in Die Casting - Impregnation (.pdf)
    can allow liquids and gases to permeate the casting. ese "leakers" are usually rejected, which translates to lost production time and cost. Porosity sealants and impregnation techniques have been developed to overcome this problem.
  • Porosity of Metal Parts
    a leakage path. Blind porosity is connected to only one side of the part wall. Totally enclosed porosity is completely isolated within the wall thickness of a part. When castings are machined, both blind and totally enclosed porosity are often opened-up, becoming continuous porosity and allowing leakage.
  • Eliminate Aluminum Casting Porosity, Shrinkage via Liquid HIPping. Manufacturing > Primary Metal Manufacturing from AllBusiness.com
    . In addition, there is little room for component defects such as porosity. In pursuit of a new technology to improve aluminum casting quality, the Hot Isostatic Pressing process (HIPping) was developed as a value-added service to eliminate porosity from aluminum castings. HIPping In commercial use
  • Car designers are "hip" to aluminum castings
    that pack well, such as brake calipers and steering knuckles. Bodycote says HIP works well for most investment, sand, and permanent mold (gravity die) casting. High-pressure die and lost-foam castings can, however, have surface porosity and trapped air pockets that HIP may not be able to get out
  • Die Casting Design and Specification Guide
    . 3 Minimizing Part Porosity. 8. 4 Optimizing Part Heat Transfer. 8. 5 Preplanning Post-Casting Machining. 8. 6 Tolerancing Guidelines: Caution. 9. 7 Metal Extension (Flash) Guidelines. 10. 8 As-Cast Finish Guidelines. 10. 9 Further Component Design Assistance. 11. 10 Magmasoft® Die Flow Simulation
  • Casting Densification Process
    of internal gas and shrinkage. Thus, the method makes possible the salvaging of castings which have been scrapped for reasons of internal porosity, thereby achieving a significant improvement in recovery. This combination of factors results in a competitive advantage to users of the Alcoa 359
  • HIPing Brings New Horizons for Casting Manufacturers
    The application of Hot Isostatic Processing to the removal of porosity from castings has been recognised for many years. However, technical data associated with the improved properties following HIP treatment are only now receiving more widespread distribution. In order to devdop a better
  • Manufacturing Application: Monitoring and Controlling Die Casting Press
    . Problem. To achieve fully formed parts of the proper density with minimum porosity, controlling the speed, volume and pressure during the injection process is critical. Conventional PLC's often lack adequate response times to maintain the tight control required during this process. Solution

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