Crews work as one unit and break when one leaves: a fix for forging units

Watch a closed-die hammer crew that has stood together for three years. The heater pulls a billet when its colour is right and swings it across without looking. The driver drops the tup the instant the tongs settle. Between blows the manipulator gives the piece a quarter turn, and the helper flicks scale off the impression with an air line. Nobody speaks. That rhythm is the crew's real skill, and it belongs to the group rather than to any one man.

Take one of them away and the rhythm goes. Our forge and press HR page lists it among the patterns that repeat from shop to shop. Hammer shops feel it hardest, though screw presses, upsetters and transfer press lines feel it too.

• Billets wait at the furnace door. The new heater hesitates, and stock goes back in for a reheat.
• More blows per piece. A forging that took three blows now takes five, and the die runs hotter.
• Underfilled corners and laps. A billet turned late or placed off-centre fills badly, and crates head for the rework bin.
• The trimming press stands idle. The clipping crew waits, then rushes to catch up.
• Voices rise. Settled members shout at the newcomer, who stops asking and starts guessing.
• Near-misses. Timing is what keeps tongs out of the tup's path. When timing slips, hands get close.

The cost is scattered, which is why owners miss it. Fuel goes into reheating. Scale loss grows with every extra minute in the furnace. Rejects climb early on, and the die takes a beating from colder stock. Overtime fills the output gap and tires the people who stayed. Then comes the dear part. The remaining crew, now carrying a stranger, starts looking elsewhere as well, and one exit turns into two.

• Crews form by habit, not by plan. No record says who can take which seat.
• Backups exist on paper only. A man listed as a manipulator has not held tongs on this hammer for a year.
• Gaps are filled by raiding. The supervisor pulls someone from a settled crew, so two crews limp instead of one.
• Leave is booked person by person. Two seats from one hammer can be away in the same festival week.
• Pay is individual. Nobody earns anything by teaching the newcomer faster.
• The skill is unspoken. Nods, glances and timing cannot be handed over in a talk.

Before changing anything, spend one shift on three checks. List every hammer and press crew by seat and name. For each seat, mark anyone else who has genuinely run it on that machine within the past quarter. Then pull reheat counts and reject tags for the fortnight after the last crew change, and set them beside the fortnight before. Seats with no second name are your exposure.

Ask the crew as well. Settled members know which seat is hardest to fill and which helper already understands the timing. They also know which signals a newcomer must learn first: the heater's raised palm for 'not yet', the driver's nod for 'clear', the manipulator's tap on the die block before a turn. Writing those on the back of the crew card gives the next new hand a head start. It also tells the crew that its way of working is valued.

1. 1

   Write a crew card for every hammer and press

   Seats, the holder, the named second and the date the second last ran it. Keep one copy at the machine and one in the time office.

2. 2

   Give each second a planned turn

   A fixed shift each fortnight when the second runs the seat and the holder steps across to another. The swap is booked in advance, never improvised.

3. 3

   Cover from a relief pool, not from settled crews

   Keep two or three multi-seat hands who float between hammers. Raiding a working crew becomes the last resort, and the supervisor logs each one.

4. 4

   Start newcomers on a lighter job

   A smaller press or a simpler part first, working alongside the man they will replace if his notice period allows.

5. 5

   Book leave by crew

   No two seats of one hammer away together. Festival and harvest weeks are planned a month out through the attendance and leave routine.

6. 6

   Pay part of the incentive on crew output

   Count good pieces after trimming and inspection, shared by the crew, so teaching the newcomer pays everyone.

7. 7

   Watch the first fortnight after any change

   Track reheats, rejects and near-misses day by day. The shift lead sits down with the crew after each of its first five shifts.

Machine and die family: ______.
Heater: holder ______, second ______, second last ran it on ______.
Driver or press operator: holder ______, second ______, date ______.
Manipulator or tong man: holder ______, second ______, date ______.
Trimmer: holder ______, second ______, date ______.
Helper: holder ______, second ______.
Seats with no second: ______.
Planned swap shift this month: ______.
Checked by shift lead on: ______.

Hammers are not the only place this bites. On a transfer press line the loader and operator pace each other, and a new loader brings misfeeds and double blanks. A cold header minder must hear a change in the machine's note before parts drift oversize, and the setter relies on him to call it. On a roll former, the coil handler and line leader time each coil end together. The crew card has fewer seats in these places, but the second's planned turn matters just as much.

A crew card goes stale within weeks if nobody reads it. Ask the shift lead to update it at each monthly review, and treat any seat without a second as an open item with a date against it. Our hot forging unit page and the piece on heavy hammer crews losing a member look at the same strain in heavy hammer work. The owner's version of this question is answered in keeping forging crews together.