Defects of carbon and low-carbon steel reinforcement of periodic profile are investigated. Optimal heat-treatment conditions for reinforcement used in Kazakhstan are investigated in laboratory tests. Technical specifications TU 5510 RK 39047093 TOO-002--2004 govern the manufacturing and monitoring of reinforcement 12--28 rolled from continuous-cast Ct5 and 35rC steel billet. The reinforcement, with a periodic profile, takes the form of a smooth rod with two longitudinal fins and with crescent-shaped transverse projections (height h at the midpoint) inclined to the rod's longitudinal axis. These projections do not intersect with the longitudinal fins and travel along a multiturn helical line, which has different directions on different sides of the rod.
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机译：研究了碳素和低碳钢周期性轮廓的缺陷。哈萨克斯坦使用的钢筋的最佳热处理条件已通过实验室测试进行了研究。 TU 5510 RK 39047093 TOO-002--2004的技术规范适用于以连续铸造Ct5和35rC钢坯轧制的钢筋12--28的制造和监控。具有周期性轮廓的钢筋采用具有两个纵向散热片的光滑杆的形式，并具有相对于杆的纵向轴线倾斜的月牙形横向凸起（中点的高度h）。这些突起不与纵向翅片相交，而是沿多匝螺旋线行进，该螺旋线在杆的不同侧面上具有不同的方向。
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