Condition: Cold Shut on Finish Blow

 

Cold Shut Only Part Way Around the Head:

1. Check to be sure the Cone Blow is not too narrow.

2. Check Cone Blow to be sure it is not too long.

3. Check to see if the Cone Blow cavity was not fully filled during upset. If not, install a longer Blow Pin in the Cone Blow, or increase the Cutoff Length. Replace the Cone Punch if cavity is too large.

4. Consider replacing the Cone Punch with a Sliding or Spring-Blow Punch.

 

Cold Shut All the Way Around the Head:

1. If there is NO flash on the Cone Blow Blank, check to see if the Cone Blow is fully filling the cavity. If not, install a longer Blow Pin in the Cone Blow, or increase the Cutoff Length. Replace the Cone Punch if cavity is too large.

2. If there IS a flash on the Cone Blow Blank, shorten the Cut Off Blank length. If the Cone Blow Blank then under fills the cavity, shorten the Blow Pin or machine a new Cone Blow cavity to a smaller size.