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  1. YYS

    difference between aluminum casting alloy 319 and 333

    Swall, Thank you.
  2. YYS

    difference between aluminum casting alloy 319 and 333

    Hi, I know the two alloys are used for permanent mold castings but not quite sure the difference between the two in terms of castability (foundry preference), casting cost, quality and so on. Appreciate if you could kindly cast some lights on this. YYS
  3. YYS

    Permanent mold casting of Mg alloys

    Thank Goahead and Edstainless for your responses. The Mg alloys mentioned earlier are good die casting alloys. However, if used for permanent mold casting, they are not so good. Hot tears, non fills and shrinkages are quite bad. My impressions are that AM50 and AM60 have even worse...
  4. YYS

    Permanent mold casting of Mg alloys

    For those who have tried to use Low Preseure permanent mold or other form of permanent molds to cast magnesium alloys, could you please share with us your experience with castability of alloys AZ91, AM60, AM50 and etc.? Thanks. YY
  5. YYS

    DRYING

    As corypad already pointed out, drying and sintering are two different processes. Drying means only the removal of water from something. Sintering actually means the interfacial reaction between two or more phases in contact with each other under elevated temperature (but below their softening...
  6. YYS

    Has anyone worked with molten steel slag before?

    For most steelmaking slags, if its chemical composition is known, it is possible to find its viscosity for a given temperature range in many references. Compare the viscosity value of your slag with that of other fluid you are familiar with will tell you how it will flow.
  7. YYS

    Comparison of Scrap Charged to Pig Iron Based Steel

    Scrap steel has different quality levels. What type of scrap steel is used makes difference in the qulaity of the final steel product. With low quality scrap steel as raw material, the steel refining will be more difficult and if the refining process is not well controlled to reach chemistry...
  8. YYS

    Von Mises Vs Max Principle

    Hi, All, My question may be a little away from the original discussion and I appologize. I also appreciate if you experts can cast some lights on my question. I am working on Aluminum casting process of automotive suspension parts such as control arms and knuckes. It seems to me that the part...
  9. YYS

    casting cost TR&R

    Thanks Goahead and Billp. I guess Trimming and Repair is very close.
  10. YYS

    casting cost TR&R

    When reading a coat analysis report for aluminum casting processes, there is an cost item named TR & R(other items are labor, molding, metal etc.). Any one know what it stands for? Thanks. YY
  11. YYS

    101 of casting simulations

    Some quick comments: 1) Should I be checking for convergence? For numerical solutions, only the converged solutions make sense. Most commercial codes lets you choose a convergence criterion and level. You can check the convergence with these tools. 2) how important is mesh quality? Like...
  12. YYS

    ZK60-T5 MAGNESIUM

    Be careful with the chips when you do machineing. Clean the machine as offen as you can and put them in a designated container. This is to prevent any risk of fire.
  13. YYS

    Aluminum Casting Simulation Software

    To customcastings, The insulation effect of the die coating is very difficult to evaluate as it is dependent on many factors, such as coating chemistry, application procedure, die geometry, temperature, etc. It is therefore very difficult to set up a database for general use in the casting...
  14. YYS

    Shaft¦s steel GCr15 YB 9-68 for Plastic Gear

    GCr15 is a bearing steel from China. it is the same as AISI 52100.
  15. YYS

    Test for Casting Cleanliness

    Different metals may use different methods to determine their cleanliness. If it is an on-line measurement, the techniques used for metals with low melting points (such as light metals AL, Mg) may fail in molten iron or steel. The following methods are used: 1) inclusion count with the help...

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