Valve Body: Opening Drill®

Code:

6512

The Challenge

The customer manufactures valves for the oil well industry. The customer is machining a valve body made from 4340 alloy steel using a Toshiba Shibaura 15 HP boring mill running with flood coolant.

Unsatisfied with this production process, the customer needed to reduce the cycle time.

The Opening Drill® succeessfully reduced cycle time and also lowered the cost of production.

Product:	Opening Drill
Objective:	Decrease cycle time
Industry:	Oil & gas/petrochemical
Part:	Valve body
Material:	4340 alloy steel
Hole Ø:	7.9" (200.66mm)
Hole Depth:	21" (533.4mm)

The Solution

The Opening Drill

Drill holder: 070821-12
Indexable inserts: OP-05T308-H

Measure	Competitor Boring Bars	Opening Drill
RPM	125	125
Speed	259 SFM (78.943 M/min)	259 SFM (78.943 M/min)
Feed Rate	0.006 IPR (0.152 mm/rev)	0.0037 IPR (0.094 mm/rev)
Penetration Rate	0.75 IPM (19.050 mm/min)	0.46 IPM (11.684 mm/min)
Cycle Time	7 hr 20 min	46 min

The Advantages

The Opening Drill provided:

89% cycle time decrease
Decreased cost of production