Flat mild steel part. Laser or punch?
Close
Login to Your Account
Likes Likes:  0
Results 1 to 20 of 20
  1. #1
    Join Date
    Feb 2014
    Location
    UT
    Posts
    553
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    102

    Default Flat mild steel part. Laser or punch?

    Have a mundane part that we need done that is a bit outside our scope. We have to duplicate a little OEM part for an assembly. The previous part is punched and works just fine. Part is roughly .850x1.750 and .08"thick. There are two holes that are approx 3/8" diam. I am sure A36 would be just fine for this but we can look at other alloys. Not just stress on it.

    I will say that the previous part is case hardened but due to the thickness, it is pretty much through hardened. It is more for abrasion resistance than anything but I think engineering is look at possibly punching a higher grade steel and foregoing the HT for it.


    I can only estimate that we will probably need 300-500 of them for now. We really don't want to even order that many until we know all is a go.

    Regarding tolerance, the OD of the part is fine at +/- .010 or so. the holes we would like to see +/- .005 but if that is an issue, we can shoot for bottom of tolerance and give them a quick ream.

  2. #2
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    7,208
    Post Thanks / Like
    Likes (Given)
    1689
    Likes (Received)
    4982

    Default

    Quote Originally Posted by huleo View Post
    Part is roughly .850x1.750 and .80"thick.
    Just to clarify - .80" or .08"?

    If .08", and you can get a good quote, I'd laser it.

  3. #3
    Join Date
    Feb 2014
    Location
    UT
    Posts
    553
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    102

    Default

    Ha, thanks, I fixed that typo. .080" thick. I think my only issue with laser is the heat affected zone if we want to use higher grade material. However, I am am not sure how well high strength steel does in a punch anyway. I assume it wears them pretty good and annealed is preferred.

    I also have concern if they will try to curl up from the heat of the laser. They must remain nice and flat.

  4. #4
    Join Date
    May 2009
    Location
    Canandaigua, NY, USA
    Posts
    2,827
    Post Thanks / Like
    Likes (Given)
    135
    Likes (Received)
    1235

    Default

    Waterjet common spring steel?

  5. #5
    Join Date
    Jan 2019
    Country
    UNITED STATES
    State/Province
    Tennessee
    Posts
    446
    Post Thanks / Like
    Likes (Given)
    139
    Likes (Received)
    117

    Default

    the turret punches do stainless without issue, do not see why not ar sheet. Ar punches easier than stainless for us, but we do not punch thin sheet. The haz with a laser on steel that thin is minimal with a good machine cutting at crazy speeds.
    With holes being only tolerance issue laser is likely going to be cheaper in those numbers. The number of lasers has driven that price down considerably.

  6. #6
    Join Date
    Aug 2010
    Location
    Medina OH
    Posts
    1,716
    Post Thanks / Like
    Likes (Given)
    107
    Likes (Received)
    714

    Default

    .080 with a good laser house, needing abrasion resistance, and not knowing anything else, I would request hardened spring steel. 1075 or 1095

  7. #7
    Join Date
    Sep 2018
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    386
    Post Thanks / Like
    Likes (Given)
    143
    Likes (Received)
    138

    Default

    Sounds like a laser part to me, should be dirt cheap in that size and quantity. How much abrasion resistance do you need? Like A514 resistance? Or like AR500 resistance?

  8. #8
    Join Date
    Sep 2010
    Location
    Vancouver Canada
    Posts
    884
    Post Thanks / Like
    Likes (Given)
    641
    Likes (Received)
    305

    Default

    I'd go out for quotes from laser and punch shops with your material of choice and see what they say. And if there are concerns about the HAZ, is there a test you can do? I'm guessing at that thickness in a tougher steel, laser would be the choice but you have to see.

  9. #9
    Join Date
    Jan 2014
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    4,408
    Post Thanks / Like
    Likes (Given)
    805
    Likes (Received)
    2374

    Default

    If you heat treat after laser cutting then the HAZ will not be a factor. Millions of lasered knife blades are done that way. HAZ will not affect abrasion resistance in any case. Would only be a fatigue issue.

  10. #10
    Join Date
    Dec 2004
    Location
    uk
    Posts
    14,057
    Post Thanks / Like
    Likes (Given)
    4552
    Likes (Received)
    6699

    Default

    Honestly laser in chromweld, its a abrasion resistant low grade stainless used in the quarry industry for sand hopper lining and such, very tough and abrasion resistant, cut on nitrogen with stainless haz is low single digit thousandths of a inch, there will be no part curl at these sizes. No need for any post heat treat and no need for any paint or plateing, so some significant cost saveings to be had there, material only costs about double to tripple what cr sheet steel does so not much cost, over here i could probably get those cut in the low hundred qty range for sub $1 a piece.

    If the supplier had to get a sheet in probaly be far more cost effective to get the whole sheets worth cut though.

  11. #11
    Join Date
    Feb 2014
    Location
    UT
    Posts
    553
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    102

    Default

    At this point, I could sure use some USA references for both punching and laser! We are striking out. Apparently business is good enough that they don't want to touch them unless making thousands, or putting a ridiculous number on them.

    The other issue is material. We determined the thickness is .087". We we use something close, but that appears to be 13ga, which of course no one stocks. The last place wants to order a full 4x10 sheet and will not allow us to bring our own material.... We are also looking for a higher grade, and seems most just stock bubblegum steel.....

  12. #12
    Join Date
    Sep 2018
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    386
    Post Thanks / Like
    Likes (Given)
    143
    Likes (Received)
    138

    Default

    If you want an abrasion resistant steel in that dimension I would fully expect them to have you buy a full sheet, which is not that much money in the grand scheme of that quantity. Check with LaserNut in California and see what pricing is like with pallet shipping.

  13. #13
    Join Date
    Jan 2019
    Country
    UNITED STATES
    State/Province
    Tennessee
    Posts
    446
    Post Thanks / Like
    Likes (Given)
    139
    Likes (Received)
    117

    Default

    You are going to buy a full sheet, such an off size and alloy. Ryerson or specialty steel (ohio based?) both sell ar and offer laser cutting at consumer quantities.

  14. #14
    Join Date
    Dec 2016
    Country
    UNITED STATES
    State/Province
    California
    Posts
    142
    Post Thanks / Like
    Likes (Given)
    22
    Likes (Received)
    38

    Default

    You can get 4130 in .080" and .090". That is a material many laser cutters should stock in the normalized condition. At least here in SoCal with all the motorsport stuff it's common. You can heat if you need more hardness. You need to work around what they have if you want small quantities at a good price. Need to be flexible on timeframe too so they can run your parts when they are running someone else's of the same material/thickness.

  15. #15
    Join Date
    Feb 2014
    Location
    UT
    Posts
    553
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    102

    Default

    ^^^^ That's all I am looking for! Any 4000 series steel can be made to work here and happy to couple this job on another. 2 shops now have made it appear this is a "big deal" to program and setup. We runs jets and routers, I know the drill and that is 30min for programming AND setup, max.

    I even told the last company I am happy to weed and detab the parts..... they were like "oh, no, we MUST do that for you"...... Seriously, we are inching closer to finding a good reason to just own a laser and forget these hassles. I would just jet them if we didn't have them setup for other stuff.

  16. #16
    Join Date
    Dec 2016
    Country
    UNITED STATES
    State/Province
    California
    Posts
    142
    Post Thanks / Like
    Likes (Given)
    22
    Likes (Received)
    38

    Default

    Give these guys a try. It's been a long time since I used them but they never did me wrong.

    Elite Laser Services - Elite Laser Cutting

  17. #17
    Join Date
    Jan 2019
    Country
    UNITED STATES
    State/Province
    Tennessee
    Posts
    446
    Post Thanks / Like
    Likes (Given)
    139
    Likes (Received)
    117

    Default

    There is no* programing on this. Just a dxf file, no poly lines, no splines, single layer, no dimensions. Dstv maybe if they want to be dragging. Pulling a sheet on and off is going to be the majority of the time. Material is going to be most of the cost, it is a processing job - still tabs? what archaic machines are these people running?

    Local to me, they will ship... Morgan Steel Company Memphis TN
    O'neal steel, Laser Cutting - Kloeckner Metals Corporation, the company formally known as phoenix (just sold in the past month, same foreman - Lonie (901) 948-3351 [my laser/sheet metal shop of choice], Southern Steel (Southern Steel Supply - Home | Facebook) [large steel supply house, fairly quick turnaround, has buyers that will find your material, not the best laser machine],
    closer to you, really cool guy, not scared of anything - Waterjet Cutting Austin | Dynamic Waterjet Cutting | Heart of Texas Metalworks . Lee has older waterjet and works on blacksmith time, but is cool, a person (like human, not corp.) and has always been more than fair on pricing.
    and you have almost emptied my rolodex on this front, which is scarey.

  18. #18
    Join Date
    May 2008
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    679
    Post Thanks / Like
    Likes (Given)
    350
    Likes (Received)
    227

    Default

    oshcut.com. They are in Utah and you can upload your DXF and get instant pricing. They seem to have spring steel in 0.083" as a stock material.

  19. #19
    Join Date
    Nov 2016
    Country
    UNITED STATES
    State/Province
    North Carolina
    Posts
    48
    Post Thanks / Like
    Likes (Given)
    17
    Likes (Received)
    14

    Default

    We've had great service from FedTech in MN. We have sent them all manner of questionable drawings, and they always send us good parts at a very fair price.

  20. #20
    Join Date
    Apr 2019
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    41
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    24

    Default

    If it is a critical part where the heat zone won't let you laser use water jet. Punching will introduce stresses you don't want.


Tags for this Thread

Bookmarks

Posting Permissions

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