Flux Cored Wire for Welding Medium-Alloyed High-Strength Steels

Изобретение может быть использовано для сварки конструкций из высокопрочных среднелегированных сталей различного назначения. Порошковая проволока выполнена в виде оболочки из ферритной нержавеющей стали, заполненной шихтой. Проволока содержит компоненты в следующем соотношении, мас.%: хром 4,0-6,0, никель 3,0-5,0, ферромолибден 3,0-4,6, хром азотированный 2,4-3,3, кремнефтористый натрий 0,5-2,0, марганец 5,3-7,4, медь 2,0-3,0, ферросилиций 0,35-0,45, оболочка из ферритной нержавеющей стали - остальное. Порошковая проволока обеспечивает получение высоких показателей временного сопротивления и предела текучести сварного соединения при повышении показателей относительного удлинения. 3 ил.FIELD: various technological processes. SUBSTANCE: invention can be used for welding structures from high-strength medium-alloyed steels for various purposes. Flux cored wire is made in the form of a shell from ferritic stainless steel filled with a charge. Wire contains components in the following ratio, wt.%: chrome 4.0–6.0, nickel 3.0–5.0, ferromolybdenum 3.0–4.6, nitrided chrome 2.4–3.3, sodium silicofluoride 0.5–2.0, manganese 5.3–7.4, copper 2.0–3.0, ferrosilicon 0.35–0.45, shell from ferritic stainless steel – the rest. EFFECT: flux cored wire provides obtaining of high indices of ultimate resistance and yield strength of welded joint at increase of indices of relative elongation. 1 cl, 3 dwg

Peasant settlers and the ‘civilizing mission’ in Russian Turkestan, 1865-1917

This article provides an introduction to one of the lesser-known examples of European settler colonialism, the settlement of European (mainly Russian and Ukrainian) peasants in Southern Central Asia (Turkestan) in the late nineteenth and early twentieth centuries. It establishes the legal background and demographic impact of peasant settlement, and the role played by the state in organising and encouraging it. It explores official attitudes towards the settlers (which were often very negative), and their relations with the local Kazakh and Kyrgyz population. The article adopts a comparative framework, looking at Turkestan alongside Algeria and Southern Africa, and seeking to establish whether paradigms developed in the study of other settler societies (such as the ‘poor white’) are of any relevance in understanding Slavic peasant settlement in Turkestan. It concludes that there are many close parallels with European settlement in other regions with large indigenous populations, but that racial ideology played a much less important role in the Russian case compared to religious divisions and fears of cultural backsliding. This did not prevent relations between settlers and the ‘native’ population deteriorating markedly in the years before the First World War, resulting in large-scale rebellion in 1916