If the corrosion problems are a result of sensitiaztion of the weld HAZ, several things can be done to prevent it.
Sensitization is the depletion of chromium in the alloy due to the formation of chromium carbides. This can be reduced by (a) using stabilized alloys of stainless, (b) using low...
The thickness is hiding in the number of plys. Slings are designated as single ply, double ply, etc. More plys provide a higher SWL, all other things being equal.
I believe most large forklifts have hydraulic fork adjusters that enable the operator to move the forks together or apart to any c/c distance within their range. Small trucks often have manually adjusted forks which ave specific detented postions so the c/c distance is not continuously variable...
The correct amount of diametral interferrence also depends on the diameters of the parts, the thickness of the walls, length of engagement, and elastic properties of the materials involved, as well the functional requirments of the joint.
Since I've received no responses to my question, I thought that some clarification of my request might be helpful.
I'm not asking for guidance on how to calculate impact forces, duration, etc. These have been the subject of several requests in this forum. I'm asking if ASME has set maximum...
ASME BTH-1-2008, Section 2-2.1 Design Category A, Commentary states that Category A lifting devices must have an impact multiplier not greater than 50%. It doesn't define "impact multiplier" or provide a means to calculate it. Any guidance on these issues uould be appreciated.
I believe 3,5,7, etc ribs on a casting or weldment, for example, will allow it to stress relieve (move) better than 2,4,6 etc ribs will because they are not diametrically opposed. It is also sometimes recommended to have unequal spacing between the ribs.
I have been downsized three times in the my 40 years as an engineer, each time from a large engineering/manufacturing company. Each time the company provided a very well written letter to all who were downsized explaining that the layoff was necessitated by business conditions and was not a...
DOE-STD-1090-2004 has guidelines for testing, labeling, and using all sorts of lifting and rigging gear, including hooks. This DOE standard is largely a compilation of information from other standards, which are acknowledged and referenced. It references ASME B30.10 for Hooks.
Things to consider when designing or specifying a shim pack are:
1. What is the minimum pack thickness required?
2. What is the maximum pack thickness required?
3. What precision is required of the pack thickness?
4. And, as has been said, minimize the number of shims to live within these...
blakrapter,
I believe the hoop stress is greater on the ID than it is on the OD because the strain is greater on the ID. This is so because of Poisson's ratio. The inner diameter of a cylinder under pressure expands more than the outer diameter because of the effect characterized as Poisson's...
The reference that I cited is a 32 page booklet published by Republic Steel. The title is "Precipitation Hardenable Stainless Steels". It covers, in summary fashion, PH13-8 Mo, 15-5 PH, PH15-7 Mo, 17-4 PH, and 17-7 PH.
The copy I'm using was copyrighted in 1975 by Republic Steel corporation...
