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Jan Ysselstein

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Jan Ysselstein last won the day on March 23 2017

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  • Location
    west coast of usa ( USACAstan )
  • Interests
    shaping and making of steel and iron

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  1. Jan Ysselstein

    Georgian 'Bulat' technology by Zaqro Nonikashvili

    Thank you for posting it.....I am looking forward to reading about it.
  2. Jan Ysselstein

    My initial journey into crucible steels.

    Experimenting with crucible steel is very time consuming and expensive...progress tends to be slow...I totally understand your thinking. Jan
  3. Jan Ysselstein

    Pad for 25# LG Power Hammer

    I have some 4" thick 20" by 48" steel plates I would part with...these are former press platens and should be 4140...I have not have them tested. My 50 sits on 1 and I have another soon to operate 50 sitting on another.
  4. James...I was there a year or two ago and I panicked ...the regular displays of wootz ( damascus ) blades are way above your line of sight and the room is dark. I got so desperate I robbed some toys they had for sale and improvised a light ..but could not find a ladder. Please post your impression when you come back it may have changed. There are a couple of very nice Japanese blades there and other than the disrespect for wootz it is a great museum.....The Turkish Room in Dresden is also recommended ...but here though some very nice blades are at eye level ( behind glass ). The Turkish Room has some amazing metal work aside from steel. I was constantly harassed by the security guys for getting the glass dirty. Bring your own light source to all these places and a large single magnifier as well ...they often can magnify details at 2 ft way or so.
  5. Jan Ysselstein

    'Konasamudram' Process

    Now we have chased some of the cementite to the area containing the micro alloys ...we still have a long way to go as the photo shows a lot of cementite still in the areas that are converting to pearlite. I have what i need from this post and consider it finished....now to some new ingots. I may post a photo if I get back to working with this sample.
  6. Jan Ysselstein

    'Konasamudram' Process

    All the scale on the sample has been removed.....still a little grinding to be done to get at the decarburized area shown in the photo. Though the above photograph field is 7 mm wide the photos below are 13mm wide and give an idea of what the pattern me become. The photos below are posted because I want a good record of what is going on and be able to trace to all back. The two microscope photos ( 13mm field ) show a lot of carbon finely spheroidized and a lot of larger carbon both are cementite...we will try to dissolve both materials ( cannot do one without the other ) and see id we can get one type of cementite to form...right now we have 2.
  7. Jan Ysselstein

    San Mai WIP

    I think the coeff. of expansion for 410 SS is closer to that of 1095 by a lot. 410 contains no Nickel and 1/2 the amount of Manganese. and has to be hardened for maximum corrosion protection.
  8. Jan Ysselstein

    San Mai WIP

    I have no idea but every piece of SS I see around here is 304 or 440 c...I will look up the difference.
  9. Jan Ysselstein

    'Konasamudram' Process

    After a little more forging, we now have this structure and it is creating a problem as even though I do not have the very large cementite fragments ....some of the cementite is getting much larger than neighboring ones..I am targeting a more even distribution of the spheroidal cementite. Next steps are to grind off some serious decarburization on one side and do the finish forging at a lower temperature and to a lower temperature..
  10. Jan Ysselstein

    San Mai WIP

    Is there a reason why you chose that SS and not say 304?
  11. Jan Ysselstein

    'Konasamudram' Process

    We are at the next forging step mot much material left but all looks good..we have forged at a high ( too high ) temperature and too much has gathered at the larger spheroidized particles. IT looks good but I will try to redistribute the carbon. If that works I will have a good path to a nice looking crucible steel. To get dendrite remnants that are very recognizable I will have to go another route.
  12. Jan Ysselstein

    'Konasamudram' Process

    I hope to just forge it out and follow it with the microscope. pw3
  13. Jan Ysselstein

    In Search of Hamon, Experiments at the Forge #1

    It is fun, I do not make videos but this weld would have been interesting to film. Jan
  14. Jan Ysselstein

    'Konasamudram' Process

    I hope to just forge it out and follow it with the microscope. I think I am out of the residual fragments of large carbides..that is a big deal for me as I like a high carbon content. I have taken all the old "wootz" or crucible steel experiments and broken them into bits for steel showing a strong hamon ....I hope. So the whole process from picking ingredients to etching needs constant adjusting for a better result. I should make a little progress this Winter.
  15. Jan Ysselstein

    In Search of Hamon, Experiments at the Forge #1

    SO, we are in the process of taking the above chips and making a blade with them, here are some pics of the process so far. The chips were welded with a borax/silica flux...the pile may be a bit too high in carbon as when I cut the stack it looks like cast iron may be in the mix ( very, very high carbon sparking). On the left a stack of welded bits on the right a tray of bits used to weld and not stick to the tray.