Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 6 of 6
  1. #1
    Join Date
    Jul 2014
    Location
    Perth
    Posts
    1

    Default Welding of tool steel

    Hi guys, new to this site, have spent all last night browsing to see what's up, must say, very impressed.

    Ok, here's my question.

    I,m cutting three 1 meter long by 1"1/4 6TP Acme external threads and making three nuts to suit.
    The boring bar I,m using is 1/2" round, a little to flexable, so have decided to make a new unit from 1" bar stock.
    All other boring bars I,ve seen have had the tool steel tip brazed onto the bar.

    What bronze do I use.I have some hard bronze and normal multi purse bronze

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
    Join Date
    Dec 2011
    Location
    Canberra
    Age
    39
    Posts
    4,467

    Default

    Hi Trevvy and welcome,
    I have only ever used standard manganese or silicon bronze rods for brazing, not that i have done many tool bits but it works well. You can also weld your HSS bit to the bar, you don't need to worry about getting it too hot just don't quench it.
    Either that or broach a square hole in your bar and add a locking screw in the end and you can use it with other tool bits.

    Cheers,
    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  4. #3
    Join Date
    Jun 2011
    Location
    Australia east coast
    Age
    71
    Posts
    1,469

    Default

    Quote Originally Posted by Ueee View Post
    Hi Trevvy and welcome,
    I have only ever used standard manganese or silicon bronze rods for brazing, not that i have done many tool bits but it works well. You can also weld your HSS bit to the bar, you don't need to worry about getting it too hot just don't quench it.
    Sure, provided you don't mind stress cracking in the HAZ.

    I've done this using a lot of preheat (dull red) and slow cooling, got away with it, don't recommend it. If you are going to weld HSS to other steels, use E309 rods or similar - you want the ductility.

    Personally if I had brazing gear on hand, I'd braze it. Whatever hard brazing rods you use will be plenty strong enough.

    PDW

  5. #4
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    177

    Default

    At work we stick weld hss to mild steel bars with stainless rods. Never had an issue. Most of the time it's for cutting acme or square threads. Try to make your bar as big as possible, some times we mill the bar back a bit for clearance .

  6. #5
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,361

    Default

    +1 on the stick welding of hss we also do it at work with stainless rods and haven't had an issue.
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  7. #6
    Join Date
    Oct 2006
    Location
    Armidale NSW
    Age
    52
    Posts
    1,938

    Default

    I haven't brazed any HSS tips to boring bars, but for carbide tips I just use ordinary 15% silver solder with a little brazing flux (both available from plumbing and hardware stores).
    Cheers.

    Vernon.
    __________________________________________________
    Bite off more than you can chew and then chew like crazy.

Similar Threads

  1. Replies: 3
    Last Post: 25th June 2014, 12:44 PM
  2. NOT A WOODWORKING TOOL BUT A HAND TOOL -A KNIFE SHARPENING STEEL
    By Lyle in forum ANTIQUE AND COLLECTABLE TOOLS
    Replies: 6
    Last Post: 16th May 2014, 12:45 PM
  3. Arc welding 1.6mm steel
    By captainmorgan0 in forum WELDING
    Replies: 6
    Last Post: 28th July 2013, 12:52 PM
  4. CO2 Mig Gas For Steel Welding
    By Turpy in forum WELDING
    Replies: 24
    Last Post: 3rd June 2009, 09:57 PM
  5. Need some help welding steel in Qld
    By bigAl in forum WELDING
    Replies: 2
    Last Post: 21st July 2008, 01:45 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •