Does anyone have experience of assessing noise from a machine?
We had a 12100 risk assesment done and it lists ISO/TR 11688-1 as the reference.
What are the limits of exposure/levels etc.?
Thanks
I have an application for a tool where the corrosion resistance of D2 steel is proving a problem.
A hardenable stainless such as 420 should be hard enough and at least let us avoid plating. The environment is industrial, humid and mildly corrosive (China).
A supplier put me on to the crucible...
We are having some rust issues with D2 steel. It is 58-60 HRC. I was looking at 440C as a possible alternative to this tool steel since it can be hardened.
Are there are major downsides to using this instead?
I have a steel part I want to plate made from 12L14 carbon steel. Medium wear and mild service.
Suppliers have varying standards listed on their websites, are there any reasons to use one of these standards over another?
I think I need Grade B Class 1, if I go 26074 or Class 1 Type 4 SC2 under B733
Simple one for you gurus out there. Is the perpendicularity of datum G to datum H implied by the total run out ( the 0.02 would not be achieveable if the surfaces were not perpendicular)? OR does the H datum need to be controlled to datum G with its own geometric tolerance?
I have attached a jpg.
I have a vertical double acting cylinder which is actuated using a 5/3 normally closed valve (festo part number 170248) (full description: 3 position, 5 ported,
4 way, Single Solenoid Air Pilot Actuated,Spring Centered). The user regularly puts their hands underneath this ram.
As I understand...
Just seeking opinion on using a true position on a key way slot on a round shaft. Datums are A and B in the centres at each end.
Does this cover symmetry of the slot about the part axis?http://files.engineering.com/getfile.aspx?folder=6861763e-f575-4f0f-8e4e-d2f00d5c2b0c&file=Slot.JPG
Does anyone have experience of the conformity tests for Stability for labaratiry equipment.
I want to know if tests (a) to (e) are done one at a time or together.
i.e. is the force applied when the unit is tilted?
Does anyone have a nominal figure for how much Al is in the composition of 6061 alloy?
I worked out 95.5% from my datasheets but would like a second opinion.
Thanks
I have an application for a 36000 brass part that is going to be heated to 300°C (572°F).
The part needs a hard coat to protect it from abrasions and also for aesthetics and also has fairly tight tolerances, some dimensions are +/- 0.0005".
I believe hard chrome would survive but may need post...
I have an application where I need to glue a glass disc to the end of a steel shaft.
The assembly needs to withstand 120°C. Can anyone recommend a good adhesive for this purpose?
I am specifying a low pressure oring, it is going to high temp so we are using Kalrez.
I have gone through the Parker o-ring guide and the dims for the groove/gland for the -044 oring are coming out at
Groove OD 3.879 +0.000/-0.002, groove width 0.101 to 0.107, depth at 0.050 to 0.054.
Firstly...
I am a newcomer to SW.
I have a basic question which I couldn't really get an answer to on my basics course.
If I have a sketch of a rectangle for example. If one side is dimensioned at 2 inches (this would be D1@Sketch1) . Is it possible to make the other edge always be whatever the 1st...
I have a part that we are considering going from sand to die cast on.
It is currently Aluminium LM25 TF or in US terms 323 solution treated and artificially aged.
We are looking for similar mechanical properties, Does anyone have a die cast alloy recommendation or any experience in this kind of...
I have a standard fitting from a supplier which we need to fit to an aluminium jacket, once it is in it is staying there.
Their fitting is stainless steel and has a viton o-ring in a groove to face seal against whatever body it is threaded into. The o-ring stretches over an M10 thread into a...
We currently use a Trimite paint AE251 (2 pack polyurethane eggshell medium spatter)
on our products. Some of our customers in lab environments use Acetone to clean the surface of our product after use and so far this has not proved a major issue i.e. a small number of products are affected.
On...
I have an assembly which uses a plastic cover subjected to low mechanical loads but also to -40 to +200°C temperature range. It's 150mm diameter by 90mm high.
At the moment we are using 25% carbon filled ptfe, but due to mechanical creep where it is fixed we might use Ertalon 66GF30. Although...
We have an application for a disc magnet which needs to be small and mechanically clamped on the flat faces (see attached).
It violates the guidelines for the length being 5x diameter and so may be more susceptible to demagnetizing over time.
Does anyone have experience with how much...
I require 2 flat surfaces parallel to each other to be milled, with a straight sloped surface i.e. a long chamfer connecting the 2 planes. The surface finish is not critical on the sloped section and I can live with rads on the 2 corners. One machinist tells me this requires 5th axis, another...
We currently use aluminium as a material for a one piece casting. I have heard the term 'polymer concrete' banded around and was hoping someone might have some knowledge of where polymers may be cast and used as an alternative to aluminium. Thermal stability and vibration damping are 2...
