Page 3 of 3 FirstFirst 123
Results 21 to 25 of 25

Thread: Same machine 320D, new problem, cracked boom

  1. #21
    Join Date
    Nov 2006
    Location
    Gold Coast, Queensland, Australia
    Posts
    4,157

    Default A LITTLE Too long?????????????

    Hi, GMBM.
    Did they let that one go a LITTLE too long too? LOL.

    Just my warped sense of humor.
    You have a wonderful day. Best wishes.

    Deas Plant.

  2. #22
    Join Date
    Nov 2011
    Location
    Estevan sk
    Posts
    1,009

    Default

    all very good info. i would get the info from cat as there lost of info in there about welding as Cat was one of the founders of the AWS. only thing that was not added was round coroners on a fish plate. i really like to do crack work with ark air as it's faster and let's you follow the crack better than a grinder. the heat will open up the crack as you go. a grinder can smear in to the crack and make it look like it's all gone plus who really like grinding anyways. i would say it would be better to have New and dry rod than worrying about 11018 over 7018. i done a Jd boom for a scrap guy with was a 30 ton machine and has not come back.

  3. #23
    Join Date
    Apr 2014
    Location
    SW MN
    Posts
    71

    Default

    Quote Originally Posted by mog5858 View Post
    all very good info. i would get the info from cat as there lost of info in there about welding as Cat was one of the founders of the AWS. only thing that was not added was round coroners on a fish plate. i really like to do crack work with ark air as it's faster and let's you follow the crack better than a grinder. the heat will open up the crack as you go. a grinder can smear in to the crack and make it look like it's all gone plus who really like grinding anyways. i would say it would be better to have New and dry rod than worrying about 11018 over 7018. i done a Jd boom for a scrap guy with was a 30 ton machine and has not come back.
    You right moog, all the fishplates in the cat diagram are engineered with the specs and engineered drawings along with material type and thickness are all in the spec. You are welding in the inside wayyy before your weld your way out to the outside.

    Depends on when you want to spend your $. Now or later..... Just make sure you have it later

  4. #24
    Join Date
    Jan 2007
    Location
    long island NY, Hancock Ma
    Posts
    2,124

    Default

    many of you guys are using the term fishplate which is not really correct--fishplates are used on the end of two beams or rails to join them together--most notably to tie sections of rail together. the term flichplate is used in my steel design handbooks but mostly used in the design of a side support to timber beams used in headers and such, but also used to strengthen a steel beam by adding a plate, except a plate added to the bottom or top of a steel beam is called a cover plate ,Probably the best definition is splice plate,
    Cat 941B, Cat D2 4U, Cat D3B, Cat D4 7U, Cat D6 9U

  5. #25
    Join Date
    Jun 2012
    Location
    Poway, CA
    Posts
    1,449

    Default Speaking of fish plates......

    Quote Originally Posted by dpendzic View Post
    many of you guys are using the term fishplate which is not really correct--fishplates are used on the end of two beams or rails to join them together--most notably to tie sections of rail together. the term flichplate is used in my steel design handbooks but mostly used in the design of a side support to timber beams used in headers and such, but also used to strengthen a steel beam by adding a plate, except a plate added to the bottom or top of a steel beam is called a cover plate ,Probably the best definition is splice plate,
    dpendzic,

    I can tell you what I have in one of my cookbooks that seems to be similar to your "flichplate." Its called a "gefilte fish plate." Being from Long Island I am quite sure you can broaden our knowledge and explain the difference.

    That aside, there is a lot I don't know about welding excavator booms but I am learning fast! Good thread.

    JanM

Posting Permissions

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