Project Manager
Bay Ship & Yacht Co. - Alameda, CA $80,000 a year Experience with trades related to industrial and ship repair industries, i.e., foundries, fabricating, machine shops, welding, and/or industrial painting are...
Safety and Occupational Health Specialist (Construction) - newDepartment Of Labor - 172 reviews - Bridgeport, CT
$48,403 - $85,841 a year Applicants must demonstrate experience working in a heavy construction trade such as electrical, iron, welding, steel erection, heavy equipment operation,...
Power Plant Electrician A - newDepartment of the Army - 26,705 reviews - Lakeview, AR
$40.08 an hour Machine work, welding, soldering and other specialized tasks require. From this list, the Corps ranked #10 in the government services industry, #6 in the.
Project Manager - newBay Ship & Yacht Co. - Alameda, CA 94501
$80,000 a year Experience with trades related to industrial and ship repair industries, i.e., foundries, fabricating, machine shops, welding, and/or industrial painting are.
0 Comments
Before we get too deep into welding stainless steel, if you read my web page on Welding Steel , you may remember that plain carbon steel is basically Iron and Carbon with small amounts of other stuff like manganese. Low Carbon Steel has .3 percent carbon. Not 3 percent but 0.3 percent or point 3 percent. That’s not much. For comparison sake, Cast iron has a full 3 percent and sometimes more. That’s why cast iron is such a pain to weld and also why low carbon steel is the easiest metal to weld… low carbon steel is also the cheapest metal to buy. Low Carbon Steel is what we use to learn to weld and low Carbon steel is what we compare all other metals to when we study metals. Why? Well it’s easier to understand stuff if we can compare it to something we already know and understand.
Well now its time to compare something else to carbon steel. Let’s compare stainless steel. Stainless steel comes in several different varieties. Most welding “noobs” are not aware of this fact. The stainless properties of stainless steels are primarily due to the presence of chromium in quantities greater than roughly 12 weight percent. stainless steels contain some combination of iron, chromium, and nickel as the main elements. Most stainless steels are mostly iron. If your are familiar with the term 18-8 stainless that was widely used in the advertisement of stainless steel cookware, the 18-8 signifies 18 percent chromium and 8 percent nickel with the remainder iron. One thing I have to mention about welding stainless steel is that the back side of the weld needs argon shielding just as much as the front. The photo of the aircraft engine stator being prepared for welding displays special tooling made for the purpose of shielding the back side of the weld. If the penetration side is not shielded with argon, it will "sugar" which is a slang word for oxidize. Granulation is another descriptive term that accurately describes what happens. A closeup photo of the granulated or sugared stainless steel weld reveals why sugared welds fail in service. There are deep pits and crevices that are bound to develop into cracks. |
Welding Technology ProgramThe Welding Technology program at Madison High school in Houston TX, prepares students for a variety of occupations in welding. Welding by gas and electricity (either arc or resistance) is a major part of this program. Methods used to fabricate and weld parts made of aluminum, steel, stainless steel and most other alloys are included in this program. Students prepare to take certification exams in welding and safety. This program offers an opportunity for certification from the American Welding Society Archives
March 2023
Categories |