We want to automate the process of welding internally threaded fittings of 3/4" to 1.5" OD to shells of 9" to 12" dia and of 1/8" thickness using MIG. The material of both the fittings and shell is mild steel. Any help/info/tips in this regard will be helpful. Is this even worth pursuing? Thanks...
To carry out external load calculations on ellipsoidal head, WRC 107 recommends to use a mean radius Rm to approximate local area as a sphere, and then use relevant graphs for spherical shell to calculate local stresses. My question is: what mean radius Rm to use?
You see, on an ellipsoidal...
I use Inventor 9 currently. Ever since Inventor 6, when I first tried to create assembly configurations by using multiple iParts in an assembly and attempted to switch between different versions of an iPart to arrive at different assembly configurations, I have come up against error messages...
How can I make a part in Inventor which is a rolled sheet metal such that its flat pattern is linked and generated. I know this can be done possibly by using 2 folds of 180 degrees each (actually the second a little less than 180 deg to give a gap for butt-welding the longitudinal seam). But...
I need to know of resources giving tips and sharing experience on the question of when is it safe to substitute a parent metal with same P-number but a different group number without bringing into question the validity of PQR & WPS. For instance, SA-414 grade C is qualified to be welded to SA...
I need to know of resources giving tips and sharing experience on the question of when is it safe to substitute a parent metal with same P-number but a different group number without bringing into question the validity of PQR & WPS. For instance, SA-414 grade C is qualified to be welded to SA...
UG-39 of ASME VIII Div 1: for multiple openings in a flat head, there are rules to determine the amount of required compensation. However, it is not clear if attached nozzle material or welding can be used for this compensation. UG-37, e.g., is for formed heads and shells where such compensation...
Autocad 2002: any drawing entity (line, circle, text etc.) does not show on screen display where viewports exist on a drawing, but they display on the layout beyond viewport area. The same entities however are able to plot/print over the whole layout. Can anyone please tell me what needs to be...
Does any one know of thermal insulation workable to 1000 degrees F whose insulation value is unaffected by water absorption (note: not just high humidity)? I will be truly appreciative of any help in this regard. Thanks.
I have an application where an edge trim in expanded PTFE (if such an edge trim exists) would be desirable. Is any edge trim manufactured in expanded PTFE of a shape similar to commonly available bulb-type extruded elastomer sections? I really do not know the technological limitations of making...
In Section II, A-234 grade WPB (being a carbon steel wrought short elbow) has an attached note G18. This note states that for Section I firetube boiler parts under external pressure, this fitting "may not" be used. My questions are:
1. Does this mean use of this material is prohibited...
