Cored wires

Calcium metal is produced in the United States by Pfizer Inc., Canaan, Coimecticut, and in Canada by Timminco Metals, Toronto, Ontario. In France it is produced by Pechiney ElectrometaHurgie. It is also produced in the Commonwealth of Independent States (CIS) and the People s RepubHc of China. Both Pfizer and Timminco supply the various grades in a variety of sizes and forms. In addition, Pfizer suppHes an 80% Ca—20% Mg alloy and a steel-clad calcium wire for use in deoxidation of steel and other metals. Timminco and Pfizer both supply ca 75% Ca—25% Al alloy for use in lead alloying. Timminco also suppHes a 70% Mg—30% Ca alloy for use in lead debismuthizing (18), and calcium particulate products, which are purchased by several companies for the manufacture of cored wire for use in the steel industry. 

Cooling of Extruded PE Wire5 Consider a copper conductor, 0.16 in in diameter, coated by extrusion to a 0.62-in insulated wire (first transatlantic cable core wire). The conductor is preheated to the extrusion temperature 412°F, and... 

The bottom of the fluidized bed has an incline of about 15° and carries the bent gas inlet tubes. These tubes are movable vertically so that their distance from the bottom of the fluidized bed can be varied. With this arrangement there is a variable settling zone for small metal pieces such as will be deposited on pyrolytic stripping of copper-cored wiring. A flanged inspection cover is fitted to the bottom of the gas distribution zone. 

The Pyrex thermal decomposition flask is shown in Fig. 291. The tungsten bus bars a, b and c (diameter of each 6 mm.) are arranged in a triangular pattern and sealed into the glass. The Ti deposits on drawn tungsten core wires (d, and d2), each 0.04 mm. thick and 400 mm. long. 

Moisture in the coating of manual metal-arc electrodes, in the flux used in submerged-arc welding or in flux-cored wires. 

The term electrode efficiency in Tables 2.1-2.4 relates to the weight of metal deposited from unit weight of electrode core wire efficiencies over 100% refer to electrodes whose coverings contain appreciable proportions of iron powder which are incorporated into the weld pool. 

Cored wire processes, unless established as low or very low ... 

Manual metal-arc electrodes of hydrogen controlled type, may require drying 250 °C Submerged-arc and cored wire processes ... 

This technique was devised specifically for testing covered electrodes but has been adapted to examine gas shielded welding processes with solid and flux-cored wires and also the submerged-arc process. It is important to note that results are not necessarily directly comparable between processes (see Appendix A). A sketch of the copper jig used for the submerged-arc process is given in Fig. B4b. 

It comprises an outer sheath of steel (usually mild steel) which contains flux and/or metallic ingredients. The sheath may be a fine hollow tube or a strip wrapped round the core. Cored wires may be used for MAG, MIG or submerged-arc welding. 

A type of cored wire (q.v.) in which most of the core is of non-metallic, fluxing ingredients, although some iron powder, deoxidants and metallic alloying additions may also be present. Such a wire may give weld hydrogen levels (q.v.) ranging from very low to medium. 

The shielding gas is active (hence MAG, metal active gas) because the shielding gas contains oxygen or CO2, often with an inert gas such as Ar and/or He. The term CO2 welding (q.v.) is used when CO2 alone is used as the shielding gas. A solid or a cored wire may be used, although with the latter, the term cored wire welding (q.v.) is more common. 

A cored wire (q.v.) in which the core is mainly of iron powder and other metallic ingredients it will normally be of very low hydrogen potential. 

The reciprocal of the run length (q.v.), i.e. the length of MMA electrode required to deposit unit length of weld bead and which is proportional to the heat input, divided by the square of the electrode core wire diameter. 

Soft superconductors in general show an increase in critical temperature [ ] when strained in one direction. However, elastic torsion seems to have no influence on the critical field [ ]. Past work [ ] has shown that superconducting surface layers of NbsSn on niobium and core wires [ ] under pull, torsion, and uniaxial compression exhibit a decrease in critical... 

The core wire injection Here very fine powdered Mg alloy is rolled in tin steel sheet, forming a filled wire. This wire is then injected, by a controlled mechanism, into a slender shaped ladle, where the Mg is released... 

The second tensile stress is the same as the bending stress, when wire rope moves over friction wheel or head sheave, due to the elhptical deformation of wire rope can produce a flattening stress, it can reduce wire rope fatigue life. The fiber core wire rope has a big elhptical degree when it moves over friction wheel, the contact angle with friction wheel is bigger than 5% 20% of steel core wire rope. 

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