Jump to content

Jan Ysselstein

Supporting Member
  • Content Count

  • Joined

  • Last visited

  • Days Won


Jan Ysselstein last won the day on March 23 2017

Jan Ysselstein had the most liked content!

Community Reputation

49 Excellent


Contact Methods

  • Website URL
  • ICQ

Profile Information

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

Recent Profile Visitors

2,810 profile views
  1. Both of your diagrams have the propane-entering at 90 degrees to the direction of air flow.....if the gas is coming in parallel and in the same direction as the air flow your set up may keep running if the power goes out .
  2. Forgive me if I have not read this correctly...looking at your colorful diagram I see the need for the green colored NC solenoid valve as a safety decice. You will have to create a switch that will not open that valve after a power outage. I would put the controlling valve on the line having the lower propane flow to the burner. The larger flow would be just capable of achieving a temperature almost at the set point . With both gas valves ( larger needle and the smaller needle/solenoid). open your set point can be reached. The blower stays on and when controlling your only disadvantage is a slightly oxidizing flame for a very short time..
  3. Troels ...Are you aware of the amount of smoke you will be generating......I could not do that here...due to neighbor's expectation and a local solution control board.......so I do it in an open pit , which most people have a misconception of. I live in a fairly rural area. .
  4. he 1800 gram ingot looks very good . The mix was half homemade cast iron and half anchor chain. When cast iron was incidental to the bloomery process the carbon content of that cast iron was about 3.2% carbon....now I am targeting cast iron only as a product in the stack furnace and It looks like the carbon content is moving up and I will have to adjust for it. Now that I am getting more confident with the new crucibles I will not need to split the ingots anymore. All low carbon iron was properly incorporated by extending the "at temp" time. So 2000 grams plus ingot is on the horizonzon. We will melt a few more ingots then move the crucible furnace to make room for the forge. t
  5. So here is a picture of the 1800 gram ingot ( the goal is a large ingot to allow for a large forging, at least 2000 grams ). Also shown is a picture of a couple of 1600 gram ingots. One of the ingots did not complete the diffusion of carbon process. Next step is to cut the 1800gram ingot to make sure the ingot is as sound as the other two. The microstructure image is of the large ingot. Very exiting stuff going on .......... furnace , crucible handling and the microstructures seem to be falling in place. I think I have to redefine the definition of "at heat " ...the four ingot halves were all put into one crucible and the crucible failed 15 minutes before the furnace was to be turned off.
  6. Steeping back was a good idea. I am not sure what I am doing is realistic. The crucibles are holding up as I just melted an 1800 gram ingot. I took an optical pyrometer to my furnace and found I am running over 3000 F at way below my normal V setting...I was burning up crucibles for no reason (ouch). I should be able to go over 2000 grams but not much more. Have encountered some beautiful microstructures and will post pictures after I write it up.
  7. I am melting some steel today..it has been a while since my crucibles did not fail.......having togo back to doing what I did long ago. Will post a picture only if experiencing great success.
  8. OK that was 0/4 and I am taking some steps back to rethink this baby..I know what I want but am not sure how to get it. Si se puede.
  9. Thank you for all the replies here ..interesting stuff. It looks like it will be a 9" diameter SS pot with 3/4 " clear plastic ( poly carbonate or plexiglass ) and a Viton 1/4" seal. BY putting a slight taper on the hole in the plastic the 3/8 pipe thread can just be inserted as if the plastic were threaded. Jan
  10. When looking at manufactures vacuum chambers , i noticed some are labeled not for stabilizing wood. Does anyone know why that is the case. Some mention the cactus juice name specifically.
  11. In planning the next melt(s) I have some serious problems to consider, the crucible showed a lot of tearing cracks indicating a great degree of shrinkage ( I could see the height of the crucible getting smaller during the melt) . To assure a greater degree of melting I will boost the carbon content to 2.0% carbon by adding 800 grams of cast iron to the ingot. I am stuck with this particular crucible for about 8 more melts and will have to shift to a higher carbon content. now I should get a 2000 gram or a 2400 gram ingot ( that is good ). I will need to make a new furnace having the air/gas inlet closer to the bottom. Jan
  12. I guess I have a new learning curve to climb. The added stand created a cold area at the very tip of the crucible the cotton pad I placed on the bottom, before dropping metal into the crucible, did not incorporate into the melt. I may have also place the crucible a little low in the furnace and may have been too frugal with the propane as not all my anchor chain got incorporated...so it will be cut in half and remelted at 50% at a time I will post some pics later. melting 1636 grams must take a little longer than 600 grams of metal. Jan
  13. While waiting for the technology I thought I would try to get some larger ingots in play. This crucible contains 1637 grams of metal and should result in about 1.5% carbon steel.. I have added a little lift to the round bottomed crucible so it will stand up without falling over. This crucible is very close to the central Asian crucible shape as shown by Alan above. I will melt tomorrow and pull the crucible the next day. I am also experimenting with some larger crucibles having a lenticular shaped ingot.....these and the one shown here will go up to 2000 grams. This crucible is not full. Actually the crucible will hold about 4000 grams but I would have to add materials after the initial ingredients are molten ( we can do that ). Now 2000 grams is 4.4 lbs. and 4.4 lbs is 14.7 cubic inches of steel if our imaginary sword is .25 x 1.5 x ( X ) inches X would be 39 inches long ..plenty of metal at 2000 grams. Here I have assumed a lot of grinding to be done, many of the historic swords weighed just over two lbs.
  14. Looking good, making the mechanics of smelting an easier process is a good idea, I am working on that as well ...interesting structures...thanks for posting.
  15. I am looking to buy some Stainless Steel Thermocouple wells like those used for salt furnaces..does any one have a good source?
  • Create New...