Specialist In Quality Carbide and Steel Cold Heading Dies
First Header Die, inc.

   

 

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1313 Anvil Rd
Rockford, IL 61115

(815) 282-5161
Fax: (815) 282-5295

 

PROBLEMS ENCOUNTERED BY THE CUSTOMER ARISING FROM POOR QUALITY IN THE DIE:

  • Premature failure, poor extrusion, or hydrolicing of inserts. This happens with the concave face not allowing the part to fit together creating undue pressure and friction.
  • Heads of bolts failing. Either the flange is not flat or the radius in the die is not smooth and tangent. Even if a radius seems to be print, if it is not symmetrical and tangent, the end result can be failed parts. Some of these failures are never identified as the die's quality problem. With out very close inspection, this problem goes unattended.
  • Under head of bolt not contacting surface completely when screw is used by customer. This can be a complex problem for safety parts. If the screw comes back from heat treater with the bottom of the head not flat, the process of discovering at what stage of manufacturing process the quality failure happened is very time consuming. The die face has to be held to a ± 5 minutes for there to be effective control of the finish part.
  • Flat head dies failing prematurely or producing improper angle under the head. Highly smooth finishes, flat angles with the correct angle, and tangents radii are a must if these dies to function to their maximum potential.

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Main Sections:

Introduction
Face T.I.R.
Surface quality
Length dimensions
High polish
Conclusion

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