Your welds are very acceptable. Having a good machine makes all the difference. 7018 are famous for getting a little ball of slag on the end of the rod. Hobart had one of the first 7018 designed especially for AC machines. One of the best characteristics of the rods was that they didn't get the slag build up on the end and could be restruck easily. On DC though, I got porosity. In shops welders will tap the rods on the concrete floor or with the chipping hammer to knock the slag off the end. Make sure the chipping hammer isn't grounded. A lot of times with a good machine, you can just tap the rod a little harder on the work piece to knock the slag off and start welding. You have to be careful though so you don't get stray arc strikes. They cause weak spots in the steel. It's best to strike the arc ahead of where you want to start the weld and then weld over where you struck the arc. 7018 aren't usually used for tacking unless it's large pieces or the tacks are under a lot of stress. 6010, 6011(AC) are often used for tacking because they make a flatter tack and are easy to restrike. Tacks should normally be welded over. Always chip the slag off a weld to determine the quality of the weld. The slag can look horrible, while the weld can be sound. 7018 should be run vertical up. The idea is weave side to side creating a small shelf for the puddle to build up on as you progress upwards. It takes some practice. 7018 isn't the best choice for thin material as it's easier to burn through with. Dave
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - A Belt Pulley? Really Doing Something? - by Chris Pratt. Belt Pulleys! Most of us conjure up a picture of a massive thresher with a wide belt lazily arching to a tractor 35 feet away throwing a cloud of dust, straw and grain, and while nostalgic, not too practical a method of using our tractors. While this may have been the bread and butter of the belt work in the past (since this is what made the money on many farms), the smaller tasks may have been and still can be its real claim to fame. The thresher would bring in the harvest (and income) once a y
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
