Stainless steels can be one of the more difficult materials to machine, but selecting the proper tooling for the application can make the difference. In a recent project at Bent Engineering (Pohang, South Korea), four separate shale gas blocks made of 17-4PH 900H stainless steel required Buttress threading of 15 holes each for a tight hydraulic seal to handle the transmission of heavy force during operation. Wet machining was successfully performed on all 60 holes using a Doosan DBC130II moving column NC boring machine with a high-torque spindle head for heavy duty cutting.
Tooling selected from Advent Tool & Manufacturing Inc. (Antioch, IL) included a through coolant SMH4015TA8-F8 Helical Shell Mill Holder (4 in cutter), hardened and ground with a 10 deg helix and used with ITH4015-4B7/45-15NR Buttress thread carbide inserts, 1-4 pitch, .250 in thick with a locking angle. Threading each of the 60 holes required four toolpaths cutting at a feed rate of 1.57 ipm at 125 rpm and 131 SFM.
U.S. Manufacturing Technology Orders Dip Slightly From June to July
Although a wide variety of sectors were positive in July –– including automotive and medical equipment –– AMT reports the 2020 orders to date of $2 billion is about a quarter down year over year.
How Does Your Company’s Compensation Package Stack Up?
FMA has released a report that details salaries and benefits for practically every position in a fabricating or manufacturing company, from CEO to janitor and everything in between. The survey results also provide insight into several HR policies and procedures.