Friday, February 24, 2012

Stories for 2012-02-18


 Recent Questions & Answers 
New Stereo, No More Horn!
By r&ddoc in Automotive

Hello! Some weeks ago I had the original stereo from my brand new Honda CRV replaced by a Pioneer P3350 BT. The guy who made the job told me no cables from the car´s wiring where cut, because he used connectors suited for this particular car and radio. I remember having used the horn once after thi ... more

Drilling a Hole in Glass
By Anonymous Poster in General Discussion

I would like to drill a 3/8th inch hole in the bottom of glass aquarium in order to install a small drain valve. The local glass shop told me they might be able to drill a 1/8 inch hole, but they won't guaranty that the glass won't shatter. Does anyone know a technic for drilling drilling glass?

Nozzle Repair in pressure vessel
By martingerald in Mechanical Engineering

Hi, We are currently fabricating a U stamp pressure vessel and during fabrication our clients wants to increase the projection of a nozzle. We have already welded the nozzle. please advise as per ASME code is it acceptable to cut a welded nozzle and re-weld again, the pressure vessel is made of sta ... more

I am Looking for a Passive Fluid Amplifier
By MSEELady in Mechanical Engineering

Is there a way of increasing the force of a river against a paddle without increasing the head pressure? A venturi effect will not work (F=MA) but is there such thing as a passive fluid amplifier that uses no motors or engines? Or do you think it's just another perpetual motion machine?

Protective Coating for High Temperature CS to be Under Insulation
By Jithin in Quality Assurance / Control

Usually we use silicone aluminium coating at elevated temperatures for CS materials that are not supposed to be insulated as it attains full curing at operation and weathering. Do we have any other high temperature epoxies for the lines to be hot insulated? Please discuss

Control Valve
By Arif S. Hashmi in Instrumentation

Why some control valves have been designed for the process inlet from the top side of the valve body with a balance plug, as usually it is from the bottom.

Controlling the Linear Voice Coil Actuator
By tjako in Electrical Engineering

Hello all, Does anyone know well how it is controlled linear Voice Coil actuator? Does anyone have an example of such a driver? I'm interested in controlled movement (stroke) in the range from 0 - 6 inch. I will be grateful for your help.

Ball Feet
By asd23789 in Mechanical Engineering

Dear All, I have a vessel supported on 4 legs. The vessel height need to be adjusted mechanically with the help of adjustable ball feet. Such type pf construction are found in brewery.pharmaceutical tanks. It resembles construction that of screw jack. each support legs is under a load of 9000 K ... more

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S7 - PLC Fault
By Voltamps in Communications & Electronics

We have an S7 SIEMENS PLC in operation in one of our Stackers in the material handling stockyard . At times , the PLC stops with a fault of ' Slave not found ' alarm . If the PLC is switched OFF and made ON , the unit works well without any problem , say even for a week continuously . Then again one ... more

Dual Input Auto Changeover Unit
By crsr1234 in Electrical Engineering

Hi, I need to build dual input auto change over unit circuit using contactors and timers for my DC power supply system AC input. I am doing that, but if any body tried it earlier please help me by providing the circuit diagram. Specification as follows AC input current : 80A Three phase/4Wire (No ...more

Protective Coating for C.S
By Jithin in Quality Assurance / Control

What is the generic protective coating component/ coating method for C.S materials at elevated temperature around 300-600 deg other than TSA?

Developing the Next Generation
By BDThompson in Engineering Careers

It seems like every couple of years, management at just about any company comes to a realization that as its workforce ages and comes close to retirement, they will be losing a valuable resource. Some companies seek to encourage their senior people (operations, maintenance, engineering, ...) to sha ... more

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