Recent content by NickE

An example of an ASTM Steel specification that discusses thickness and tolerance is: A513, titled: Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing. This specification covers chemistry, dimensional, and surface specification. Nick

exactly what I was going for IRstuff. Thanks, didn't realize there was a name for the wire btw the connector and strain relief. Nick

Ahh.. The Crimp vs Solder debate... As a metallurgist and live sound engineer I have often been interested in this debate. In live sound a common and critical connection is the MASS connector, W4 MASS, this connector contains 176 pins/sockets in a very high density connector. It also sees a...

Almost all ferrous materials are magnetic (will stick to a magnet) The only reason to use stainless is if you need the corrosion resistance, otherwise you are just adding unnecessary costs. Grey Cast Iron is a pretty good choice if you're looking for long term dimensional stability during use...

Heat treat for Oil or Air hardening tool steels is going to be on the order of dollars/hundreds -- independent of the material choice a go/no go at .0005" is going to have to be ground, your largest cost for producing your gauge. What is the basic diameter? Pre-Hardened drill rod can work...

O1, A2, work well. You want a material that is very abrasion resistant. This normally requires a hardened steel. Alternately I guess you could use an alloy steel and carburize it. either way 17-4PH is soft and rather expensive for the job. Nick

properly heat treated 4130 or 4140 will not show significant property differences due to a post-heat treat cryogenic treatment. Nick

All turning, no planned drilling or boring. One component: ID Turn/Cut to length Other component: internal thread/face/cut to length Nick

we are setting up a new (used) lathe, it's a FEMCO DURGA-25E We will be using it for production machining of 4130 DOM tubing, using coated carbide tooling. What coolant would you use and why? some obvious things that we would prefer Compatible with the workpiece, tooling, and machine. Low...

I meant generating the equations should be relatively easy. Nick

for a mechanical engineer this should be pretty easy, a couple levers and a screw. are you sure you're a mechanical engineer? this forum (Eng-Tips) is for working, real engineers. Nick

you are going to have a tough time, as Mike said, you're looking at a job description that normally would encompass a large number of different people. You must know how to manufacture things to design new products and see them through the prototype, beta, and into production. In fact for the...

I'm looking for information and descriptions of the maths for calculating the forces required to permanantly bend tubing using a fixed die and rolling wiper. Anyone have any suggestions for this metallurgist who's a bit out of his element? I can post a schematic of the machine in a bit if that...

There's also Associated spring: http://www.asbg.com/ nick Nick

arunmrao- maybe they figured if it was good enough for ductile iron, it's good enough for hadfields. Nick