I have a drawing for a casting made from spheroidal graphite iron (also known as ductile or nodular). Some of the dimensions have modifiers like |F and |F/C. See image below.
What do these represent?
Our customer is a global vehicle manufacturer. A drawing they provided to us for a splined shaft has three internally threaded holes on the end. The thread note says M14x1,5-2 (see attached image). I would like to know what the -2 represents. Usually that position in the thread designation...
I found an older drawing at work that I thought would be good for a few laughs. It appears that this part requires importation from Bespin. Check note 3 on the attached file.http://files.engineering.com/getfile.aspx?folder=9424dce5-3b62-4f18-a760-220d79ed80b4&file=high_performance_nut.png
We have an application where we need a non-ferromagnetic material that can be surface hardened to withstand high contact stress. We do not need resistance to corrosion or high temperature. Is there something cheaper than 201/204 that has no chromium?
Why is the letter C used as the designation for the martensitic steel group in ISO 3506-1 Mechanical properties of corrosion-resistant stainless steel fasteners -- Part 1: Bolts, screws and studs? The letters A and F are used for austenitic and ferritic, respectively, which is logical. Why not...
I am joining a hexagonal hub to a shaft with a hexagonal drive feature. These two hexagons need to have an angular misalignment of 10 degrees maximum. What is a good way to specify that according to ASME Y14.5M-1994? An image is attached. Thanks.
I am compiling best practices for bolted joint design. I would like people to share any drawing specifications they use for spot faced holes for bolted joints. I was thinking about flatness, perpendicularity and surface finish. Thanks for your help.
Cory
I updated faq725-600 with some new information. Please use the comment link if you have questions, comments, and/or recommendations.
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
I am looking for a reference for electric motor shaft design. I see that NEMA MG 1 has some guidelines. What other references (book, textbook, standard, other) are available for learning about this component. I am interested in materials, manufacturing processes, assembly, sizing, and...
For aircraft joints with preloaded countersunk fasteners (like Hi-Lok, etc.), what equation(s) are used to match joint bearing area with fastener preload? I am not interested in analyzing the joint's resistance to shear forces, only analyzing the bearing stress generated during assembly.
For...
We conduct corrosion testing. My corrosion chamber uses a salt solution prepared from deionized water. A 0.75 inch inner diameter city water pipe feeds into a reverse osmosis (RO) unit (Millipore RiOs 200):
http://www.millipore.com/catalogue.nsf/docs/C8674)
The RO unit fills a 60 l holding...
I am using Mathcad 8.
I am trying to calculate a cylinder's mass as both diameter and length change.
I have defined the density as rho:= 7900 kg m-3 by using Insert, Unit from the toolbar.
I have defined i:=1..8 and j:=1..9.
I have defined the diameter and length as range variables...
I have a part that is carburized SCM420H (similar to SAE 4120). I have a report that states the case microstructure is "Tempered martensite RAR 1-2". I need to know what RAR means. I assume it is a retained austenite rating. Any details about this would be appreciated. Thank you for your...
I am contemplating upgrading from Mathcad 8 Professional to Mathcad 12. Currently I am a novice user - e.g. I can't use it to solve for unknowns. I read the manual and online tutorials and it doesn't help. What would be the best way to learn how to use Mathcad 12 effectively? Are there any...
I want to analyze the stress on a part. I want to vary two part dimensions through ranges:
l_k = 2, 3 ... 200 mm
D_A = 18, 19 ... 200 mm
I want to use a Finite Element Method software program to calculate the stress [σ] in the part using these two variables. Then, I would like to...
I want to create a chart that has mulitple x-axes and one y-axis. For example, I want to plot material strength versus temperature, so the y-axis is strength in megapascals, and the main x-axis is temperature in kelvins. I would like one or two other x-axes for temperature in degrees Celcius...
VDI 2230 February 2003 includes a change to the thread engagement calculation, adding the factor 0,8·P. This was due to new research from Konstruktion 47 (1995) 285-291. I obtained this article and can explain why this factor was added.
Physical testing was performed on several...
A new version of VDI 2230, Systematic calculation of high duty bolted joints, has been released this month and is available for purchase from Beuth Verlag at:
http://www.beuth.de
The new version is bilingual (German and English), contains 171 pages, and costs €178,60 (printed version) or...
