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Title: Numerical simulation and experiment on split tungsten carbide cylinder of high pressure apparatus

A new high pressure device with a split cylinder was investigated on the basis of the belt-type apparatus. The belt-type die is subjected to excessive tangential tensile stress and the tungsten carbide cylinder is easily damaged in the running process. Taking into account the operating conditions and material properties of the tungsten carbide cylinder, it is divided into 6 blocks to eliminate the tangential tensile stress. We studied two forms of the split type: radial split and tangential split. Simulation results indicate that the split cylinder has more uniform stress distribution and smaller equivalent stress compared with the belt-type cylinder. The inner wall of the tangential split cylinder is in the situation that compressive stress is distributed in the axial, radial, and tangential directions. It is similar to the condition of hydrostatic pressure, and it is the best condition for tungsten carbide materials. The experimental results also verify that the tangential split die can bear the highest chamber pressure. Therefore, the tangential split structure can increase the pressure bearing capacity significantly.
Authors:
; ;  [1] ;  [2]
  1. Dieless Forming Technology Center, Jilin University, Changchun 130025 (China)
  2. School of Mechanical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001 (China)
Publication Date:
OSTI Identifier:
22482675
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CAPACITY; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CYLINDERS; DAMAGE; DIES; DISTRIBUTION; EQUIPMENT; STRESSES; TUNGSTEN CARBIDES