Thermal simulation method for preparing stainless steel/carbon steel composite ribbed steel bar
A stainless steel and composite belt technology, applied in material thermal analysis, using stable tension/pressure testing material strength, testing material hardness, etc., can solve the problems of high cost, complex preparation process, long cycle, etc., to reduce oxidation problems Effect
Active Publication Date: 2018-06-29
NORTHEASTERN UNIV
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Problems solved by technology
[0005] According to the above-mentioned technical problems such as complex preparation process, long period and high cost of stainless steel composite steel bars, a thermal simulation method for preparing stainless steel / carbon steel composite ribbed steel bars is provided
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Embodiment
[0045] In this embodiment, the seamless 304 austenitic stainless steel pipe 3 is used as the cladding material, and the 20MnSi carbon steel rod 4 is used as the core material, and the dimensions are respectively (outer diameter x wall thickness x length, mm) and (Outer diameter × length, mm), the two are tightly combined, and the blank is used to perform a single-pass compression test on the MMS-300 thermal simulation test machine, and the deformation is 75%.
[0046] The above-mentioned seamless 304 austenitic stainless steel pipe 3 and 20MnSi carbon steel rod 4 are immersed in alcohol and ultrasonically cleaned for 30 minutes. After drying, sand the inner wall of the stainless steel pipe 3 and the outer surface of the carbon steel rod 4 with sandpaper, and then Wipe with acetone for cleaning treatment to ensure that clean metal is exposed on the joint surface, and after drying treatment, the carbon steel rod 4 is tightly nested in the stainless steel pipe 3;
[0047] Then...
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The invention provides a thermal simulation method for preparing a stainless steel / carbon steel composite ribbed steel bar. The method includes the following steps: a stainless steel pipe and a carbonsteel rod are closely nested and combined after surface treatment; a thermocouple is welded on the outer surface of the stainless steel pipe; a bimetallic sample is placed between chucks in an operating box of a thermal simulation experiment machine; high temperature compression deformation and heat treatment experiments are carried out; the sample after the experiments is subjected to structureproperty analysis. With use of the thermal simulation experiment machine, a thermal simulation experimental process scheme is changed, and the rolling process simulation process of the stainless steel / carbon steel composite ribbed steel bar is completed; with cooperation of a vacuum system, the oxidation problem of the bimetallic bonding interface in the experimental process is reduced, and thus the stainless steel / carbon steel composite ribbed steel bar is guaranteed to have good interface bonding property and have the structure and performance meeting the requirements. The thermal simulationmethod has the advantages of simple preparation method, low cost, material saving, strong repeatability, and easy achieving of the experimental purpose, and quickly and accurately finds out a relevant law.
Description
technical field [0001] The invention belongs to the technical field of metal material technology research and thermal simulation, and in particular relates to a thermal simulation method for preparing stainless steel / carbon steel composite ribbed reinforcement. Background technique [0002] The construction of infrastructure and major projects is inseparable from the extensive use of reinforced concrete structures, and the performance and quality of steel bars as concrete skeletons have attracted increasing attention. Especially with the accelerated pace of national urbanization and the vigorous proposal of the marine strategy, the demand for high-strength corrosion-resistant building steel bars will increase, while the traditional steel bars commonly used have poor corrosion resistance and are easy to corrode and expand, resulting in reinforced concrete structures. It is easy to fail prematurely and cannot meet the requirements of the building life, thus causing huge econom...
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Login to View More IPC IPC(8): G01N25/00G01N3/18G01N21/84G01N3/40
CPCG01N3/18G01N3/40G01N21/84G01N25/00G01N2203/0019G01N2203/0076G01N2203/0226
Inventor 冯莹莹余焕骆宗安吴庆林张宏阁
Owner NORTHEASTERN UNIV