By Edwin P. Alexander
Американские локомотивы 1900-1950
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Extra info for American Locomotives. A Pictorial Record of Steam Power 1900-1950
We now give a more detailed description of each of the above three commercial systems. The Automatic Control System of ESR in the Manufacturing Association "Novokramatorski Mashinostroitelnyi Zavod" The ESR shop of the MA NKMZ is a specialized department for the production of forgings of structural, roller, and other steels. The shop processes can be divided into three main groups: auxiliary operations, remelting of steel into ingots, and finishing operations. The ACS that was built for this factory was designed for centralised control of the entire shop.
ESR under a high-flouride flux with up to 20% titanium oxides keeps titanium melting losses at a minimum, retains nitrogen, and produces highly homogeneous castings. The addition of titanium to 8H4M4V2Ff-Sh steel increases the range of hardening temperatures from 20 to 60°C and increases the mean bearing lifetime (L90) from 190 to 1,000 h. The ZFVNIIPP research laboratory has shown that using ESR to create specialized new materials can reduce the cost of research, speed up the development cycle, and facilitate the introduction of new, more efficient materials.
Castings produced by open-hearth electric-arc melting and ESR were rolled into bars with a diameter of 120 to 180 mm. 3. 4. Investigations of the physical properties of metal at different stages of metal processing are of special interest. Consequently, the plasticity of test samples was determined by means of a hot torsion test at the temperature of maximum plasticity, that is, 1,453 OK for steel ShH-15. Test samples were cut from 125-mm diameter round bars from axial and peripheral regions. 5.
American Locomotives. A Pictorial Record of Steam Power 1900-1950 by Edwin P. Alexander