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Recent content by inductionexpert

  1. inductionexpert

    Induction Heaters

    Sorry our man gave wrong answers, do you recall his name?
  2. inductionexpert

    Induction Hardened Steel Surface Etch Pattern

    The surface etched pattern is the hardened zone. A 6mm is a 3 kHz depth. When using induction we refer to kW's and kHz the kW is how much power & the kHz is how deep it heats. Also can get good results using a sand/glass bead or steel shot if acid is not desired. The bands you see on the...
  3. inductionexpert

    Di water and copper pipe compatibility

    Induction power supplies use DI water between 50 micromo and 70 micro mo. The used of 0 micro mo Di is hungry and will attack copper or stainless. Put 30 % glycol mixture and it buffers the Di an it will stay in the 50-70 window for up to a year with no corrosion. Fred Specht Ajax Tocco Magnethermic
  4. inductionexpert

    Induction Heating

    induction Heating is the most efficent means of heating vs all other means, likely 85% to heat a vessel for creating steam. However the capitol expense is the highest for induction vs other means of heating.
  5. inductionexpert

    INDUCTION HEATING PROBLEM

    Aluminum, copper or non magnetic stainless will all work, 1/4" tick is all that is needed to absorb the field.
  6. inductionexpert

    Cracking problem

    20% seems high, last months "Forging" magazine had an article, just up your ally. "Defects in Hot forgings" by H.J. Henning. You must read @ www.forgingmagazine.com on page 21.
  7. inductionexpert

    Cracking problem

    22% is really high, usually not more than 15%, likely for this should be less than 10%. Suprised you get such high hardness with such high % of polymer. Not grinding crack unless burning and you would see. Leaving in temper at longer time will make no difference, need high oven temp, add...
  8. inductionexpert

    Cracking problem

    What is the temp of quench? Straight water or polymer added, at what %. Suggest raising polymer percentage will reduce cracking more than just temp.
  9. inductionexpert

    Cracking problem

    During the Magneflux process, the dye can stay in a forging parting line and look like a crack if not cleaned really good. Have you cut the part to see if the crack is really under the parting line? This has fooled me in the past. Fred Specht Ajax TOCCO 847606-9462
  10. inductionexpert

    SWGR induction heating elimination

    Put a 1/4" aluminum plate on inside of door/panel, will be 1/3 of heat now generated, if put copper would be 1/4 of temp rise. Dr Faraday invented the ring, used in every microwave today, see through window with copper screen that knocks doen the field. Fred Specht 847-606-9462
  11. inductionexpert

    Cracks with Induction heat treating of 1144 steel

    ASM Heat Treat Book says max hardness 52-55 RC, so you are pushing the limits f the steel. The cracking could be caused by overheating, the word melting indicates you may be overheating. Overheating will cause cracking. Depending on how much sulfer is in the bar, and if it has any stringers of...
  12. inductionexpert

    Induction Heaters

    We build induction for vessel heating. http://www.AjaxTOCCO.com Fred Specht
  13. inductionexpert

    INDUCTION HEATING PROBLEM

    The carbon steel will always heat. Use non magnetic stainless or aluminum 1" thick to knock down the field. Fred Specht 847-606-9462
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