 | Announcement | |
| Black Iron Coating? |
| By Sid_Sidow in Chemical & Material Science |
My gas bar-b-que grill was in need of new grates inside. My brother-in-law has a metal shop and offered some angle iron - galvanized or black metal. As I recall, galvanized contains zinc, I did not think this would be good for the food cooking. I chose the black iron. After cutting the pieces to pr ...more |
| Koken Barber Chair Repair |
| By the chops in General Discussion |
Hi! I am restoring a "1910" Koken Barbers Chair from the ground up... In the process of tearing the chair completley apart I had to cut, twist & extract a lot of the screws & bolts out of the brackets, etc.. & when a chair is of this age. There's No~Way some of them will come out as they ... more |
| White Bearing Rust Inhibitor |
| By aurelioc in Electrical Engineering |
Does anyone know of a rust inhibitor for white metal bearings for a HV Electric motor that will be in long term storage (About 12 months) and does not need to be removed before it returns to service. It must be compatible with the motor's lubrication system which is a common tank? I want to be able ... more |
| Speed Control on VAT 2000 |
| By Farhan Javed in Electrical Engineering |
Hi, We have a VAT 2000 VSD of GE and I want to control speed on it using potentiometer but after setting necessary parameters motor is still running on fixed speed. Can anybody tell me what does base frequency represents on VAT 2000? C02-0 is set to Anoluge Fixed C07-0 speed setting 1 is set to ... more |
| Liquefaction of Ground |
| By noelngke in Civil Engineering |
Dear fellow experts, I read about liquefaction of soil. However, I am wondering what frequency is critiacal for this to occur? I came across a 1.4m thick partially buried pile cap which moves in three directions (x,y, z). Wondering whether the induced vibration from the structure about has caused ... more |
| Getting Data from a PLC Automatically |
| By doyleke3 in Instrumentation |
Hi, I am trying to collect information from a PLC for a college project. This Omron PLC is connected to 6 stations on an assembly line. I am trying to collect information like times for when the pallet enters station A and exits station A and so on. I have currently ident ... more |
| B31.1 Temperature Ratings |
| By thinman56 in Mechanical Engineering |
I know the temperature limits given for the stress values in Appendix A bottom out at -20F, but does that mean that A106 or A53 carbon steel cannot be installed outside where temperatures may drop to -40F on a few winter nights? I see the tables also include the lower limit of -20F for 304L SS, but ... more |
| High Speed Linear Actuator - 12-Gauge Shotgun? |
| By STL Engineer in General Discussion |
I am working on the design of a testing device that requires a linear actuator to move about 10 lbs (22 kg.) mass about 6 inches (150mm) with 120 lbf. of sliding friction in a few milliseconds to achieve a peak speed of 168 feet per second (50 m/s). Originally we had thought to drive it with a slide ... more |
| What is Causing the Zug Island Hum? |
| By ronwagn in General Discussion |
US Steel has a highly guarded plant on Zug Island in the Detroit River. Apparently they have made some changes in their processes. People in Windsor Canada, across the Detroit River, are now vehemently complaining about a strong hum. What kind of equipment change, in a steel mill, could cause such a ... more |
| Insulation Class F/B |
| By coolyaar in Electrical Engineering |
One of our siemens 450KW motor has insulation class as F/B. what does that mean.is it a class F motor with temperature limit of 155 degree or class B motor with temperature limit of 130 degree. |
| Why Sitting is Killing You |
| posted in Biomedical Engineering |
I was using stumbleupon.com the other day (which is admittedly an internet black hole that makes you sit and stare at a computer screen for hours) and I found this really interesting and slightly disheartening infographic about the dangers of sitting all day. I'm sure many of you spend hours sit ... more |
| Restoring Lives, One Classic Car At A Time |
| posted in Hemmings Motor News Blog |
A few years back, I started becoming more aware of the problems that soldiers returning from Iraq and Afghanistan were having, as they tried to return to civilian life. I know, this is not a new problem, but my family was involved in 9/11, so I've been personally invested. Anyway, we tossed ...more |
| Journey to Better Health |
| posted in Sports, Fitness, and Nutrition |
Well I have started my weight loss journey or should I say my journey to better health. I am utilizing a program on my iPhone to track my calories, fat, sodium and exercise called "Lose it". I have a scale that calculates the percentages of body fat vs. muscle, hydration and bone density. I hop ...more |
| Almond Halving (Transversally) Machine |
| By mazhur in Mechanical Engineering |
I am assigned by a condiment producer to get or build him a machine for automatically halving mixed almonds transversally into almost two equal halves. Of course the almond seeds are previously shelled but seem to be obtained from small varieties of mixed sized almonds, looking almost like seeds fro ... more |
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