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  1. RunnerMan

    material database

    I have found this site extremely useful:- http://www.key-to-steel.com
  2. RunnerMan

    Welding White Cast Iron in Sulphuric Acid Service

    Whatever you decide to do, it might be advisable to have the defect and surrounding area radiographed - this might just be the tip of the iceberg.
  3. RunnerMan

    Casting Porosity and how much should be "expected"

    The porosity in question could be a volumetric loss due to insufficient compensatory liquid metal in that particular area of the casting. Changes in section and / or incorrect 'feeder head' or 'feeder neck' dimensioning could also contribute. Casting geometry could play a part also, does this...
  4. RunnerMan

    casting charactristic of ca6nm

    Ideally we ought to know the weight of the casting, the general section thickness and overall height of section. Casting geometry would considerably affect the outcome also. However, all things being equal ! You must ensure that before closing the mould, the paint (especially in pocketed...
  5. RunnerMan

    Porosity Fracture

    The extent of crack growth would be dependant upon the severity of the porous area of the section. These regions are more likely to cause crack initiation. In my own experience, cracks caused during post heat treatment contraction (compressive) stresses always manifested in an area that was...
  6. RunnerMan

    Liquidus /SolidusTemperatures High Chrome Irons

    I have in my possession, the phase diagram for the Fe-rich corner of the metastable C-Cr-Fe liquidus surface. I rather thought that someone could offer up a decent alternative.
  7. RunnerMan

    Liquidus /SolidusTemperatures High Chrome Irons

    Is there any way I can calculate (quickly and reasonably accurately) the liquidus/solidus temperatures of High Chrome Irons (typically 2.7%C 19%Cr)? Also, To what extent will the above materials reduce in volume in the liquid state up to the completion of solidification (% Shrinkage)- Can I...

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