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I manufacture ceramic parts from fiber, silicon carbride and cement. Once parts have been processed I need a good reliable hardness tester. has anyone used a hardness tester(vicker unit) for testing ceramic materials. I would like to know what unit you have had success with. This is going to be...

I am trying to find a supplier to manufacturer 2 identical eccentric cones. Material is SS316L and customer will allow one piece rolled/welded eccentric cone or machined. My problem is that I need 6.35mm wall thickness due to temp and creep rate. The small ID is 5.1" and large ID is 9.5". Piece...

I am working on creep rate of ss316L pipe and I need to find mtr material thinning rate for this material. Does anyone know where to find this for temperature approximately 600C. I saw this in a chart several years ago but did not save like normally would. Now that I need it, I can not find it...

I am going to make a SSseamless pipe at 1.5" sch40 into a flow meter and I need to change the cross section shape. I intend to flatten pipe to about 1/2" height for fluid to pass through. When I do this, I think I am going to have a bit of a problem. I think the rating of the pipe for pressure...

I ahev a test loop that I am trying to determine accurate flow rate of liquid sodium in loop. I made the magmeter and it outputs millivolt signal. I have purchase GE ultrasonic flow meter to calibrate my magmeter. I need to calibrate 200, 325 and 450C flow curves. I am done with 200C but to do...

I have wrapped pipe with trace heaters and wrapped that with fiber wooven insulated fiberglass tape. The insulation that wraps this and pipe is ceramic fiber insulation rated to 800C. This ceramic insulation is very dense and is 1" thick as anything heavy would not wrap pipe tightly. Yes my...

The reynolds number at 425gal/min is 32,280. It is funny you mention laminar flow because we have been discussing installing inside the pipe 8" long tubes all welded together becasue I need to install a gate valve that causes cavitation. The cavitation makes a sound that sounds like gravel and...

I have contacted GE and they do not have anyone so far that has any experience with media of sodium metal. They have looked over the problem but they have a standard set of solutions to try and that did not yield successful results.

I am using a GE ultrasonic flow meter that measures flow through 2 ultrasonic transducers. I have never used one like this before and it works good until the flow rate gets toward top end of scale. It is suppose to measure 650gal/min and I can not get above 425gal/min. It is showing signal...

I have a large piping test loop, 4" sch.40 SS304 that holds 20 gallon of fluid. I am using a very dangerous fluid and can not afford a leak. I first pressure test and have no leaks. Then heat piping to 200C and then vacuum test. I can pull a 1950 microns and when I disconnect vacuum I do not...

I have attached the only drawing that I can in pdf format to view the pump and see internal coponents enough to understand item in question. Thanks for all the help, it is nice to know that I am not struggling with something really simple to do at first...

This design is linear pump and it is basically straight tube with inlet force cooling air at one end and coils in the tube and then exists exhaust air opposite end. Exhaust air is 140 degrees F and tube temperature is 104 degrees F. The pump is elctromagnetic and no moving parts, so efficency is...

After your response I started over and throw out all informationhanded to me and went and found really solid model. OD tube = 17.7" OD of coils = 14.764" surface area = 1451.6 ft2 air volume in container is uniform around outside =3.27ft3 air volume around coil surface area = 2.18ft3 Pump power...

The surface area being cooled is 15.5 ft2 sorry I thought I had included it. The design was 70% done when I started with new company.

To answer first question, no this is not for school. I have rescently change jobs and I am in a different field of Engineering. The details requested for help with heat removal are as follows: I am pushing ambeint air through a linear pump. The pump has 950lb of coils and 221 amps at 240volts...

I am working on heat removal utilizing forced air. My goal is to find cfm volume necessary. I will push air via cent fan through a pump and do not know how much heat the coils give off as it is just being designed. We have calulated coil mass and current draw. I need a good formula for heat...