论文部分内容阅读
为了精确评定受不定载荷和温度变化作用的金属结构单元的承载能力,必须在能确保接近使用条件实际情况的装置上开展研究工作。现有的杠杆加载式蠕变试验机,由于其承载能力不足(10吨以下)和工作空间较小,而无法对大尺寸的结构件进行试验。如继续增大带杠杆系统的蠕变试验机的承载能力,将导致显著增大试验机的重量和尺寸,并将恶化操纵系统的动力特性。西伯里亚材料试验机设计所研制成的试验机(见附图)采用液压加载试件和专门的操纵系统,这种试验机能在最大拉力为50吨和温度600℃以下时对实际大小的金属结构单元(薄壳和板件)进行蠕变和持久强度试验;作用在试件上的载荷和温度能在长时间内保持恒定或按给定的二级程序作变化。
In order to accurately assess the bearing capacity of metal structural elements subject to varying load and temperature variations, research efforts must be carried out on devices that ensure close to actual conditions of use. The existing lever-loaded creep testing machine can not test large-sized structures due to its insufficient carrying capacity (under 10 tons) and small working space. Continuing to increase the carrying capacity of a creep testing machine with a lever system will result in a significant increase in the weight and size of the testing machine and will deteriorate the dynamics of the handling system. The test machine developed by the Siberian Material Testing Machine Design (see attached drawings) uses hydrostatic test specimens and a special handling system which tests the actual size of the metal at maximum tensile force of 50 tonnes and temperatures below 600 ° C Structural units (shells and plates) undergo creep and long-term strength tests; loads and temperatures acting on the test specimen can be kept constant over time or varied by a given secondary procedure.