Page 50 - MetalForming December 2011

Ask the Expert
MetalForming magazine presents: Ask the Expert. These brief infor- mational tidbits allow readers to learn from those who have the answers. If you’d like to see your technical question addressed here, please e-mail the editor: bkuvin@pma.org.
If your company provides technology-based solutions to the met- alforming industry, please contact Andrew Flando at aflando@pma.org to learn more about this program.
Straightening HSLA Steel
Matt Watson, national sales manager, Formtek Maine
Q:Every time we attempt to straighten high- strength low-alloy (HSLA) steel with our
existing press-feed equipment, originally purchased for mild-steel applications, we struggle to achieve flat parts. What are our options for dealing with HSLA material?
A: To achieve flat parts, the material must be worked beyond its yield point to remove internal stresses. Typically, straighteners designed for mild steel use large-diameter rolls with large center dis-
tances between the rolls. To effectively straighten HSLA material, what’s required are smaller-diameter backed-up rolls with close cen- ter distances. www.cwpcoil.com
In-Die Sensing
Jim Finnerty, product manager, Wintriss Controls
Q:We’re running a progressive die blanking 0.008-in. stainless steel, and are getting
pulled slugs that get squashed into the part by the stripper. We’re having difficulty detecting the problem with our tonnage monitor. Is there a better way to do it?
A:The increase in tonnage caused by a pulled slug under the stripper is too small to be reliably detected. Use analog induc-
tive proximity sensors to measure the height of the stripper plate at bottom dead center. When a slug is pulled, the stripper will be too high; the sensors will detect this and stop the press, even if the strip- per height difference is as small as 0.0005 in. www.wintriss.com
Ad Index
Advertiser Pg#
Can-EngFurnaces .....................................41 Chemcoaters ..........................................36 ChristyMetals .........................................36 FutureProducts ........................................14 HilmaDiv.ofCarrLaneRoemheld .......................10 ISB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 LinearTransferAutomationInc. ..........................5 Link Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 MFGMeeting,The ...................................43 MurataMachinery ...................................10 P/A ................................................BC PHDInc. ............................................8 PMA
Membership .......................................IBC
MetalFormingmagazineERPExperience ...............34 PhygenCoatings,Inc..................................14 PlexSystems,Inc. .....................................3 Stamtec .............................................9 Union Tool Corp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Unist, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 WayneTrailTechnologies,Inc. .........................IFC Wintriss Controls Group LLC . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Telephone#
905/356-1327 877/411-2905 800/356-7923 800/237-5754 636/386-8022 800/867-5787 705/735-0000 615/833-4168
800/243-8306 800/624-8511
216/901-8800 888/749-4361 855/534-8012 931/393-5050 574/267-3211 313/918-1246 937/295-2120 800/586-8324
Web Address
www.can-eng.com www.chemcoaters.com www.christymetals.com www.future-products.com www.clrh.com www.isblite.com www.lineartransfer.com www.linkelectric.com www.mfgmeeting.com www.muratec-usa.com www.pa.com www.phdinc.com/mf1211
www.pma.org www.metalformingmagazine.com www.phygen.com
www.plex.com www.stamtec.com www.uniontoolcorp.com www.difficultdraws.com www.waynetrail.com www.wintriss.com
Look to metalformingmagazine.com to find the supplier you need to get your job done. Click on the Site Sponsors button to find each advertiser listed with a telephone number and a link to its website. Simply click on the supplier’s website address and be linked to its home page.
This index is published for reader convenience—every effort is made to make it accurate. MetalForming assumes no responsibility for errors or omissions.
Metal Forming (ISSN 1040-967X) is published monthly by PMA Services, Inc., 6363 Oak Tree Blvd., Independence, OH 44131-2500, for Precision Metalforming Association, an international organization serving those who create precision metal products using stamping, fabricating and other value-added processes. Metal Forming is circulated free upon request to those in North America who qualify and are in the metalforming industry. (Publications Agreement No. 40031793) Others in North America may subscribe at $40.00 per year ($4.50 per single issue). Overseas subscriptions are $225.00 per year. All subscriptions include shipping and handling.
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48 MetalForming/December 2011
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