Friction welding the two surfaces are rotating as it heats the weld joint .The two are then pressed together upsetting the joint to a raised bead. A standard application for Hydraulic Cylinder rods for many heavy equipment manufacturers.
Flash welding is the same as resistance welding.Its pretty much how band saw blades are welded.
Since I've really never seen it friction welding always confused me what stopped it from just shearing back off when it spins ?
Operating rod assembly part numbersSpeaking of Garand op rods, I bought a mongrel rack grade from CMP (SA w/ W.R.A. and IH parts) with an op rod listed in the Poyer-Riesch book as "National Match". It shows a different drawing number, no manufacturer and no NM stamp. The rifle shoots but the bolt tracking is a little sloppy for my liking and the op rod seems a little light. I don't have the drawing number with me right now, can anyone shine some light on what this might be?
The drawings are the same. It is just in the 1950s they added a two digit prefefix to all older drawings, e.g., the hammer went from 46008 to 5546008.Thanks for this info. If the drawing is available, it might be interesting to show others the one (or two?) dimensional differences/tolerance spec regarding a standard M1 vs NM M1 op rod…folks might be surprised at the nuances difference…
OK.... I'm back home now and have the rifle in front of me. First off, I was wrong, the Op Rod has an SA mfg. stamp. It has a 7790722 serial number. It's listed on page 71 of the Poyer-Riesch book as "NM Rifles from 1962". Is there anything different about these op rods?Operating rod assembly part numbers
Standard M1 Garand op rod drawing:It has a 7790722 serial number. It's listed on page 71 of the Poyer-Riesch book as "NM Rifles from 1962". Is there anything different about these op rods?
It's listed on page 71 of the Poyer-Riesch book as "NM Rifles from 1962". Is there anything different about these op rods?
My question is the up and down play causing the bolt to jam rearward when cycling manually (and no... it's not the follower). You must apply downward pressure on the op rod or the bolt will hang open. I has yet to hang up when shooting but I don't have any of these issues with any other Garands so I was just curious. Might this be a sign of excessive op rod wear?