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Ebw: Equipment, Joint Design And Applications | Metallurgy / Best Powder For 38 Special

An example of the cleaning action for the weld can be seen in the case of zero-gap welding of galvanized material. Narrow and deep welds are typically more subject to porosity, most often at the root but also in the middle of the weld. Electron beam welding machines are quite complicated, requiring skilled operators to achieve optimal results. However, the focus position of the electron beam is dependent on various parameters as well as the accuracy of the gun assembly. Most Ni-/Co-base alloys that can be joined with conventional arc welding processes can also be successfully joined via EBW and LBW. Modern vacuum chambers are equipped with state-of-the-art seals, vacuum sensors and high performance pumping systems enabling rapid evacuation.

Electron Beam Welding Joint Design And Layout

Edge welding of dissimilar metals. The inert atmosphere of electron beam welding ensures an excellent piece part appearance after welding. Laser welding is also useful for joining parts that are not suitable for processing inside a vacuum chamber. High weld penetration range. As the electron stream travels deeper into the material the electrons are scattered, slowed down and stopped by collisions with atoms of the material structure, resulting in the heating of a pear-shaped volume. By lowering the beam power and either defocusing the beam and/or widening the beam by using deflection pattern. It's a noncontact process, has low heat input relative to other fusion processes, offers high processing speeds, and produces deep fusion zones in a single pass. Manufacturing cost and quality are key goals to consider in the fabrication of components. The FABRICATOR is North America's leading magazine for the metal forming and fabricating industry.

Electron Beam Welding Joint Design And Engineering

Porosity can be minimized or avoided completely, the top bead can be smoothened and the creation of spatters can be avoided in most circumstances. Lap welding has many different considerations. The final products are made from many components, and these components need to be joined in some way. In all these applications the process proved to be robust and flexible at the same time. The joint must be satisfactorily strong in service and capable of being consistently produced in the quantities and the requisite quality desired. Figure 3 shows some typical laser welding joint configurations.

Electron Beam Welding Working

125 mm; however aluminium alloys can tolerate somewhat larger gaps than steels. Scattering occurs when electrons interact with air molecules; by lowering the ambient pressure electrons can be more tightly controlled. This ability to apply exceptionally high levels of heat energy to a very small area makes it the preferred welding method for many hard-to-weld materials. The process results in high-quality welds associated with electronic control. Components containing several stacked weld joints, usually lap joints, can be simultaneously welded as in any "tier". These flanges, often with longer length than is necessary so as to accommodate part/process variation, add extra weight to vehicles that are already requiring weight reduction in order to meet upcoming federal standards (e. g., CAFÉ standards—fleet-wide average of 54. 2M, Recommended Practices for Laser Beam Welding, Cutting, and Allied Processes.

Also, for a given penetration and gun-to-work distance helium shielding permits welding at a significantly higher welding speed. Fillet Weld – Ex 1 & Ex 2 — Figure 19a & 19b. Porosity can be a weldability issue due to the rapid solidification rates and deep weld pools that do not readily allow for dissolved gases to escape; this effect is exacerbated by high weld travel speeds. This transformation is stable in the high 90% range for all metals regardless of whether the electrons hit the surface at a perpendicular or shallow angle. The size of the vacuum chamber limits weld size for traditional EBW. On the other hand, it offers a wide range of penetration depth, generally from 0. Weld Joint Design and Preparation for EBW: The joints commonly made by EBW process, as shown in Fig. It can withstand stress better than any other type of joint design. The beam may not always hit the joint exactly where it should and thereby increases the risk of losing penetration or even entirely missing the joint. The joint information below helps define and clarify the tooling and fixture options for a new welding project. Flange welding of galvanized material with and without oscillation using Scansonic FSO. The process can have minimal spatter to create visually clean welds, especially with the addition of shielding gases. Laser welding also has one of the highest initial investments, tooling costs, and weld joint fit-up requirements These must be accounted for when selecting laser welding as the joining method for your production process.

Try some different loads and powders from good reloading books and use what you like. Bullseye, Unique & 231. 38 special and 357 mag reloading. jimb16. My cabinet has 8 lb. I really like the way it meters out of the Dillon so I try to develop loads for my pistols and revolvers using it. If you want low recoil, just using lighter bullets and high-energy (fast burning) powders in low charge masses will reduce recoil quite a bit, even at high pressures.

Best Powder For 38 Special And 357

I learned to load from my FIL and I can't about guarantee he loads more Unique in handguns that anythig else. I am anal about my reloading, using my scale to weigh every powder charge. For example, have you seen many posters say much about the line of Ramshot powders? A very good modern formulation. 38 a bit and serve well for moderate. Ramshot Competition.

Did not really expect high velocity with those!! If you have a good woman, don't go looking for something better. Im not concerned with completely filling the case like trail boss would (my go to for 44 special poppers) but something a little more volumous than titegroup is desired, the numbers stated above, all roughly%50 case filling with bullet is just fine. I used Unque and Bulleseye for years and found Red Dot is better. I also went through a good amount of 700x with near identical results. I may be a convert before I'm done. With women it is time to find the one you want, and start living. Best powder for 38 super. If I were limited to only one--Unique. The biggest reason not to use it is that it does leave a lot of empty space. Mixed brass any small pistol primer Hornady 38cal 148gr HBWC 2. 38 special rounds with unique, red dot, and 231. 3/BE today when using wadcutters.

Best Powder For 38 Special Site

Was using SR7625 'cause I had some. So I gotta say, it was a pretty funny moment and I get a little laugh each time I think of the look on the boy's face when he saw me!! Powder recommendation for mild 38 spcl - 9mm/38 Caliber. "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza. It seems to me it was harder to find Ramshot powders on the shelves until recently (last year or so). For a low-cost, low-recoil plinking powder: TiteGroup. It makes a huge difference. And most of my guns could handle the very very unlikely double charge.

It was ok. Also a little dirty. 5 Universal with a 158 LSWC seems to give me the best overall accuracy at basic 38 spl levels. Loaded up some with the Lee TL SWC in a 38 case and it will do any thing I need a 38 Spl for. 7x28 loaded to 50, 000 psi (higher than a 44 Magnum).

Good Reloading Powder For 38 Special

There really is no one good powder that I know of that will get you really good results with both. Another vote for Bullseye and Unique, they are the only two powders I use for 38 sp. During the "Clinton years" I got 8 lbs. 4 green behind a 120 gr. Fast / Medium - Red Dot. A harder cast DEWC propelled at about 900 fps is a wonderful hunting load, accurate and hard hitting.

38 Special, and we will keep a running tab. Has been a workhorse and proven performer. That looks more like a 357 load. 38 +p, which could be two. Location: Columbus Ohio. The powders we have in S Africa are different to the US but the Hercules (now Alliant I think? Best powder for 38 special site. ) So I start wipin' to remove it. I was always told, "If it ain't broke, don't fix it. " Dum vivimus Vivamas. 'Til things we've never seen will seem familiar. I still think BE-86 is better for higher velocity at lower pressure; without lots of flash. 38s I use Clays and Bullseye for most every bullet style. I also believe that, in a democracy, government exists because (and only so long as) individual citizens give it a 'temporary license to exist'—in exchange for a promise that it will behave itself.

Best Powder For 38 Super

3 and there was an article by Ken Waters on handloading for the 38 Special. My 2-cents on the topic of everybody having their favorite powders as listed above is fine and valid, but from a longtime experimenter who's gone thru many "specialized powders" in my learning curve I've recently concluded that a bottle of A0 which is cheap and available online can go far to replace a dozen specialized powders, and Unique and Herco too because I've done it with satisfaction it's not only a good standby to have, it's now my Go-To. EDIT: In case anyone is wondering WTF I would use it for; the answer is 50 and 100 yards. If I were making loads for community of revolters, this would be the one.... felix. For 38 Special, W231 and Bullseye are worthy choices. It's not the cheapest (would that be Titewad? Most uniform velocities and good accuracy. Best powder for 38 special and 357. BE is my favorite powder for 3/4 ounce charges in a 12 gauge. 3 grains Power Pistol and 5. I previously used lotsof Unique because someone gave me 4 pounds for free. I changed over to Win231 about 15 yrs ago. 38 Special you intend to load within SAAMI specification pressure limits to shoot in guns potentially incapable of handling something like 22, 000 psi peak pressure, then the powders that will perform well at those pressures will not deliver the maximum velocities in 357 Magnum at 35, 000 psi.

It should be noted that the concerns about forcing cone erosion do not apply to. I run in the front door and there they are, sitting down waiting for me. Titegroup would be another outstanding powder. But it's really spunky stuff and I suspect it runs too hot for lead. I also may have been biased by his warnings -- in other words, I may have just been seeing what I was expecting to see. I'm 44 years old and have been reloading for better than 25 years, but nobody showed me. It also runs really hot; which doesn't bode well for lead bullets anyway. Location: Northern Virginia. Everyone asked what kind of load was he using & he replied "5. Maybe it is just the thrill of something new or maybe they are looking for the one they like best, who knows. Other than that- whatever I can pour into a case and get reasonable data for approximation.

Best Powder For 38 Special Offers

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. Meantime I'll just keep shooting the cheap stuff, as it's bulkier and and more accurate:). Someone said it 38 Special is a very forgiving caliber for the handloader. I can see no reason to go on the hunt for something that might, but probably won't be any better. I have about 10 pounds of SR4756 and only 1 pound of Unique. StrawHat brings up something VERY interesting: (to paraphrase) does the age of the reloader have anything to do with the choice of the older powders? Of Unique & it's still in my closet (unopened). The suspected cause of Lil'Gun's apparent behavior is the high percentage of nitroglycerin. 38's and 2400 for my heavier.

AL-8 is my all time favorite. For me it's 10B101, for the wife it's 700X. 38 special, but I seem to gravitate to the HP-38/W-231. I have used it to load 45 acp and 9X18 makarov as well. 0 gr Power Pistol with RimRock 158 gr LSWC-HP-GC (+P)#. And you'll have to pump 'em up a bit to get it to run fairly clean. Nosler 8 manual loading densities for 158gr JHP 38 Special max charges: Power Pistol. Ive read that but not found any of the signs that some people claim to be encountering, like strap cutting. Wad cutter or a 150 gr. It isn't cheap, but I have found it to be clean and easy to work with. 5 grns Blue Dot with the H&G #43 bullet. Most are in the 150 gr and up weights.

B/E.... maybe tite group... watch this space... geargnasher. They ranged from 125 gr Golden Sabers to 170 gr Keith and they were all loaded with SR4756. 5 grains of Bullseye for target loads but am wanting to get higher velocity for 158 grain SWCHP.. Bullseye, Unique, Power Pistol and Blue Dot are the pistol powders I have.

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