Document pBXxYNM7yrZR3OvJeDgEXxyyk

! ( Vv Pago 1 of___ h Assignment No. 0015-66 Date October 17. 1967 PLAINTIFF'S EXHIBrr TITLE: VST MACHINE PRESS SECTION WEIGHTS /OTP FORMING PRESSURE CURVES I Assignment To determine the Tare Weight of the press section of each'A/C pipe machine. Summary The actual Tare Vfeight of each A/C pipe machine was determined by individually weighing each press section against ring force gauges. The actual weights are as follows. A/C Pice Plant Press Weight, Tons Santa Clara 56 Hillsboro 57 Ambler 58 St. Louis 59 Riverside 60 Pilot Plant S&D 3.8 U.l {fl Machine - 3*7 #2 Machine //I Machine - 3.? #2 Machine 12.3 2.0 h.3 3.6 A series of graphs were prepared to show the total forming pressure at each plant. The Gauge Pressure vs. Nip Load in pounds per lineal inch of pipe length is recorded. These graphs can be used as guide lines to compare forming pressure within and between plants. } General To establish guide lines for the forming pressures that should be used during pips roll-up, it is necessary to know the Tare '.eight of each machine. Using these guide lines, we can then compare the forming pressures within and between plants to assist the factories in opti- **-A-**i*c*cvo*Gx*ciXiions * Before the riverside plant -was in operation, the plants had used a standard press weight of 3.8 tens for each machine (except h.O tons for St. Louis ;-l Machine). This standard in actual practice gave ancorrcc- *esw**.s .a.on unc roll--u*o pressures ceuween .r.o plants were compared. Start-up of the Riverside plant, which has a radically CTD001275 Pago 2 of____ U Assignment l?o. 0018-66 Data October 17, 1967 different press section, emphasized the importance of having correct plant should follow other machine practices. Comparisons could ha made in felt speeds, roll-up times, pipe thickness, etc., hut the force applied during roll-up was only an estimation. Using a cannon weight, there has been no way for the plants to compare starting and ending pressures during roll-up. Eecause of changes in formulations, machine speeds, making other pipe sizes, and special'pro blems such as opening-up, the plants need a base to establish and adjust forming pressures. The new tare weights will establish guide lines so that valuable information may bo exchanged between plants. Machine Design The anvil and press roll diameters and pressure cylinder area for each A/C pipe machine are as follows. 1. Plant 56, 57, 59 (both machines), and 59 (both machines), and the Pilot Plant machine with exceptions as noted.* a. Anvil Roll Diameter b. Press Roll Diameter c. Press Roll si to si distance d. No. of Dolly Roll Sections e. Dolly Roll Cylinder Diameter f. Total Pressure Area 25-5/3" 7-5/8" 5 8" 251 in.2 100.it in.2* 2. Plant 60 a. Anvil Roll Diameter b. Press Roll Diameter c. Press Roll si to distance d. No. of Pressure Cylinders e. Pressure Cylinder Diameter f. Total Pressure Area 30" 1CV 2 12 " 2io in.2 t: CTD001276 Page___ 3 or h ) As3igrjr.Qr.-t No. 0013-66 Date October 17, 196? Forming Pressures A series of curves ware drawn for each plant. Graphs 1 through 6, that show the Gauge Pressure vs. the Nip Loading. The latter is expressed as pounds per lineal inch of the pipe length. Each curve, was adjusted to include the base tare weight of the press section. For any gauge pressure the pipe machines my be compared to the actual force that is being transferred to the pipe during roll-up. Conversely for a particular Nip force the Gauge pressure for each plant can be determined. The Tare Weights in Tons and the weight converted to Nip Loading for each machine are: A/C Pine Plant Press Section TjrrT.l-aAr*e.clCW,neigh7t/2TIo-inascn Tare Nip Pressure Lbs./in. nine length irl Mach. If2 Mach. Santa Clara Hillsboro Ambler St. Louis Riverside Pilot Plant 56 57 58 59 60 RAD 3.3 l*.l 3.7 3.5 . 12.3 2.0 2*7-8 51.6 U.3 1*6.5 3.6 U*.0 15U.7 11*8.1 5U.1 1*5.3 Weighing Procedure The "dead" weight of each pipe machine was measured by supporting the press section on two force ring gauges and recording the total weight. Two 20,000 pound gauges were used for this purpose and shipped to each plant. The sketch shows the arrangement of the gauges at the nip. Top Press Rolls Anvil Roll :________ a Note: Riverside Press configuration is different. CTD001277 1 >0 CM C* CTD001279 o 0*mscG^ oZT'ZQ pc^otpuj -i TCl Press Tare V.'oight I L j I Nip Forming Pressure ' Pounds Per L in e a l Inch o f Pipo Length ( l 9 u)