Content tagged with "alloy"
Results: 15
Article
April 11, 2005
Welding zirconium and zirconium alloys Part II
Welding Technique Gas tungsten arc welding (GTAW) zirconium requires careful attention to many of the same criteria used in welding other metals. Successful welding depends on the electrical characteristics, wire feeding, interpass cleaning, workpiece preheating, and heat input.... Read more...
Article
January 10, 2005
Welding zirconium and zirconium alloys
A magnified view of a titanium-zirconium weld joint shows titanium (the multicolored area, left), zirconium (the green and yellow area, right), and a mixture of the two metals (the blue area, center). The intense colors come from polishing the weld interface and anodizing the surface.... Read more...
Article
July 13, 2004
Getting more punch life
Augur Metal Products, a custom fabricator in Independence Ken., performs a variety of processes for manufacturers. While the company's capabilities include shearing, cutting, forming, welding, and finishing, chief among them is sheet metal punching. One of its processes involves punching... Read more...
Article
October 9, 2003
Identifying the right cutting and welding tips
The tip of a welding or cutting torch is where the action is (see Figure 1 ). Welding tips usually produce positive pressure (higher than 1 pound per square inch ) and are used at equal pressures of acetylene and oxygen. These single-hole copper-alloy tips are attached to a torch handle... Read more...
Article
October 9, 2003
Combating plate corrosion
According to a recent study sponsored by the U.S. Federal Highway Administration (FHWA)1, with support from NACE International—The Corrosion Society, corrosion-related direct costs such as prevention methods and infrastructure repair and replacement make up 3.1 percent of the gross... Read more...
Article
August 28, 2003
Carbon content, steel classifications, and alloy steels
Generally, carbon is the most important commercial steel alloy. Increasing carbon content increases hardness and strength and improves hardenability. But carbon also increases brittleness and reduces weldability because of its tendency to form martensite. This means carbon content can be both a... Read more...
Article
July 24, 2003
Which wire do you require?
Many fabricators overlook the efficiencies they can gain by changing a wire or process. In fact, when you ask fabricators why they're using a particular electrode, some respond with "That's the way it's always been done here," even though another way might yield significant improvement.... Read more...
Article
June 26, 2003
Phases, structures, and the influences of temperature
But phase changes can take place in many metals while still in the solid state. These phase changes are directly related to temperature and take place in the metal's crystalline structure. And while temperature is what controls these transformations, stress, cooling rate, and alloy or chemical... Read more...
Article
April 24, 2003
The structure of metal
As you think about molten metal, keep a couple of points in mind. First, heat flows to cold-always. And that becomes more understandable when you consider that warm atoms are moving faster than cold atoms. And those fast-moving atoms are bumping into other atoms, causing them to move quickly.... Read more...
Article
May 16, 2002
A primer on titanium tube and pipe
Titanium is the ninth most abundant element in the earth's crust and the fourth most commonly used structural metal. In nature, it occurs only as a mineral (ore) in combination with oxygen or iron (rutile, TiO 2 , or ilmenite, FeTiO 3 ).
Titanium is a lightweight material whose density... Read more...
Article
October 11, 2001
Article
September 13, 2001
Selecting the right materials for roll forming—Part 2
Alloyed Steel In addition to carbon, large varieties of metallic and nonmetallic elements are used to achieve the desired mechanical properties and corrosion resistance. The most frequently used alloying elements are manganese, cobalt, chromium, copper, molybdenum, vanadium, nickel, zirconium,... Read more...
Article
September 4, 2001
Changing the way they do business
Dealing with work loads, delivery schedules, and many other responsibilities doesn't leave managers with much time to consider factors that justify equipment improvements. Often this means ideas for improvements get shelved. However, fabricators who want to improve production and... Read more...
Article
June 15, 2001
Article
February 19, 2001
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