Heading Dies
  Various Heading Dies
  Serration Dies
  Heading Dies Drawings
  Screw Head Style & Drive Recess
  Header Punches
  Header Punches Drawings
  6-Lobe Header Punches
  Tamper Resistant 6 Lobe Punch Pin
  6-Lobe Header Punches Drawings
  Thread Rolling Dies
  Thread Rolling Dies Drawing
  Drill Pointing Dies
  Drill Pointing Dies Drawing
  Trimming Dies
  Trimming Dies Drawing
  Punch Pins
  Hexagon Grinding Punch Pin
  Hexagon Grinding Punch Pin Specification
  Special Punch Pins
  Two Piece Punch Pin
  Casings/ Holders
  First Punch Cases
  Various Pins
  Multi-Die Punches
  Pins Drawing
  Segmented Hexagon Carbide Die
  Hexagon Pin Punches Drawing
  Cutting Knife
  Dies Case & Tooling Drawings
  Grippers / Fingers
 
Technology Support
Technology Support

The  reasons caused heading products of surface defect:

1. Bias for the reason of 2nd blow setting and machine adjustment improperly.

2. Crooked head for the reason of 1st blow setting and machine adjustment improperly.

3. Screw head profile is not round because of 1st blow choice improper and 1st blow forming process is not full.

4. Heading Die cracked fir the reason of heading die breakage or the radius of heading die design improper to cause it collided & scraped with 2nd blow.

5. Screw head with two layers because of 1st blow forming procession improperly.

6. Burrs caused by the reason of 1st blow forming procession improperly. The mainly reason of 1st punch pin and punch die's distance too big but the 1st punch pin too short to make the burrs.

7.Craked angle for the reason of 2nd punches broken or 2nd punches collided with heading die.

8.Craked on head because of the raw material of wire or the 1st blow design mistake or the usage of lube problem.

 

2012/9/13 下午 05:14:08