Hello CR4 members. I'm currently trying to figure out what welding process is used to weld copper brush leads to their corresponding steel brush holders.Metalurgically speaking, I dont know if these metals are in their pure form.The application is typically small motors(no bigger than 7.5 KW).I'm a

From Popular Science - New Technology, Science News, The Future Now:

Diamond Fusion A team of Chinese researchers proposes firing tiny diamond bullets into a chunk of crystal methane to produce nuclear fusion. A millimeter-sized diamond bullet fired from a linear accelerator can

Does anyone have a catalogue showing specifications for pressure seal gaskets for parallel slide gate valves, etc. These valves are of SEREG make. Our plant uses these type of valves in the feedwater system (200 degC and 14MPa pressure). The gaskets are of stainles steel construction. The supplier h

I work for a power utility. I am required to write a technical specification for a hydraulic power system (hydraulic power pack) to actuate the emergency brakes for the hoist drum of the overhead crane in our workshop (190T). Can any one provide some assistance in this regard? I have tried to search

1)where i can find the classification of panels like frame-1,frame-2,frrame3 ? on which bases this classification has done? frame-1:single panel encloser with main braker (MCCB)and other branch breaker(MCB)

usually this encloser are used for load centres

frame-2:this is

Hi all, our plant wanted to use a flanged bellow on the dry air duct which operates at a pressure with a very slight vaccum (+/- 0,5 kPag). The manufacturer of the bellow is telling me that for that specific type of bellows, they do not require a gasket to achieve sealing because the medium is dry a

what is the norma permitted insuslation of a motor & how mouch megger value required to start a H.T. Panel.

Dear all,

I am designing a piping for a fire water system using the API 5L GR B, the wall thickness according to ASME B31.3 is 4.39mm, so can I opt for the nearest thickness which is 4.4mm, or should I go to the schedule 40 (STD)?

Thanks in advance.

From Discover Health & Medicine:

Jonathan's big smile and those of his happy parents are brought to you by the marvel of cochlear implants. That the video is blowing up all over the tubes is a pretty good indicator that external, visible augmentation is moving steadily toward mains

From Newlaunches.com:

An ingenious innovation comes in from a former MIT Media Lab student, Jamie Zigelbaum. He's created something called 'Slurp', more precisely defined by him as a 'tangible interface for manipulating abstract digital information as if it were water'. It is said

I am currently mixing different fluids and mineral oils in a 30 gallon container. I am wanting to blend in a much larger container, possible a 275 gallon tote. How do I figure out the right time to mix? I have read "Fluid Mixing Technology" and it has great advice for the angle and type of blades et

What is the use of converter transformer?

It is said its reduce harmonics. Explain how it is reducing hamonics in a industry.

Can anyone tell me whether transformer stated below can be parallel at the secondary side

1) Step down transformer, vector group Dyn1, 18kv/11kV

2) Step up transformer, vector group YNd11, 4kv/11kv

Thanks you...

Hi all.

I'm working in petrochemical industry which deals with many rotary compressors and steam turbine. In condition monitoring of these, people says orbit analysis is the best one.

Please give any links study about this.

Thanks in advance

What are the materials that can be used as to resist magnetic attraction or repulsion between two magnets?

Please note that I am asking for resistance and not shielding the magnetic attraction or repulsion between two magnets.

Please share your experience.

EAA AirVenture Oshkosh is the yearly membership convention of the Experimental Aircraft Association (EAA), an international organization of aviation enthusiasts based in Oshkosh, Wisconsin. Billed as "The World's Greatest Aviation Celebration,", EAA AirVenture Oshkosh will run from July 26 to Aug

I have recently received this alert:

- CVE-2010-0483 -
(under review) Learn more at National Vulnerability Database (NVD) • Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings

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vbscript.dll in VBScri

I learned about vibraing wire type pressure sensor. How it works?

I am designing new coil for induction heater it consist just from 1 turn and it is used to heat a cast iron part to certain temperature. I would like to have the equations that I need to know the optimum design of the coil and the optimum distance from the coil to the cast iron part.

From Engadget:

While range is an unfortunate limiting factor for electric vehicles, slow recharging time is perhaps even more troubling. Going 100 miles on a charge would be okay if you could stop at the corner electron stand and top up your cells while hitting the potty, and JFE E