Continuing from this thread: http://www.eng-tips.com/viewthread.cfm?qid=418786
Taking the sound advice & opening a new thread as it's a different part.
This casting failed over the holiday break.
Here are the shots of fracture surface:
All these ridges and facets, does this look like...
This is a cast steel spelter socket. Failed after 24 hours of service.
Trying to guess what might have been the issue before sending out for tests.
Fracture started here??:
Other side of the same leg. Gas porosities??:
The legs are bent, yielding after fracture??:
Also these opened...
Several of this part failed recently, all breaking apart at roughly same area.
It's made of cast steel (C 0.27%, Mn 0.9%, Si 1.4%, Ni 0.75%, Cr 1.85%, Mo 0.4%; Hardness 43-45 HRC).
Just got this one piece here this morning, I'm not sure if I'm reading it right trying to guess something from the...
Hello,
We make these cast steel tips for dragline buckets. Several failed recently, failure rate much higher than usual.
We had a batch of these tips hardfaced on top, front, side and bottom faces. Hardfacing didn't cover full face, just few ~20 mm wide weld lays of hardfacing metal.
All the...
We need to shrink fit a 210.5 mm diameter shaft into a hollow cylinder (OD 535 mm, ID 210 mm, Length 560 mm), both made of 1020 steel. Some people here are suggesting heating the cylinder and simultaneously cooling the shaft. While I can understand & calculate shrinking of the shaft if cooled, I...
Just came about this drawing. Got two "R" like symbols. I haven't seen anything like this before. Looks like some kind of surface finish symbol. Can anyone please tell me what this means?
Thanks.
I need to relate one dimension to another such that for a range of values of the 2nd one, 1st one has a single value. And for next range of values, the 1st one jumps to another value. Say, if x is between 50 and 99, y is 20 and if x is between 100 and 150, y is 50.
I can't find a way to do it...
I'm finding it hard to put all-round fillet weld symbol in drafting. I can put fillet weld symbol, but can't find any "all-round" symbol to go with it.
Can anyone please help me out? Thanks.
Is there any way to sketch polygons in NX5? I can't find polygon command anywhere. I've tried editing .tbr to include UG_SKETCH_POLYGON command but it doesn't work. Funny thing is that NX help says there is this Polygon command. What am I missing?
Thanks.
I just came up against this spec that gives different nominal OD of NPT threads than all other sources I've checked. For example, it says for 1/8 thread nominal OD is 0.391 while all others including Machinery Handbook says it is 0.405; for 3/4, it says OD is 1.022 but all others say it should...
I've got to work with old drawing calling for "Si Mn st75" as material (steel, most probably) required. I have no idea what it is. Can please anyone help?
