Boiler water tube for waste incinerator and manufacturing method thereof
A manufacturing method and incinerator technology, applied in boiler water pipes, steam generation methods using heat carriers, transportation and packaging, etc., can solve problems such as excessive heat input, thermal influence of base metal, deformation of base metal, etc., and achieve corrosion resistance Improved performance, improved corrosion resistance, improved compactness
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Embodiment 1
[0080] [Example 1] Field exposure test
[0081] image 3 This is a diagram showing a sprayed water pipe panel constructed in an actual gas exposure test. Figure 4 It is a graph showing the measurement results of the spray coating in the actual gas exposure test. exist image 3 The positions shown in (1) and (2) were formed with the thermal spray coating based on the conventional material as a comparative example. image 3 The positions shown by (3) and (4) are formed with a thermal spray coating based on the novel material according to the present embodiment. As a conventional material, Ni-based alloy (Ni-15Cr-4B-4Si-3Mo-3Cu) powder was used. As a new material, a powder obtained by subjecting Ni-P electroless plating to a Ni-based alloy (Ni-15Cr-4B-4Si-3Mo-3Cu) was used. As the thermal spraying method, a high-speed flame thermal spraying method was used.
[0082] Will image 3 The sprayed water pipe panels shown are installed on water pipes in an actual boiler furnace,...
Embodiment 2
[0084] [Example 2] High temperature corrosion test
[0085] The high-temperature corrosion test was carried out in a tubular furnace in accordance with the salt-immersion and salt-submerged high-temperature corrosion test methods of metal materials in JIS standard "JISZ2293". Table 1 is a table showing the test conditions of the high temperature corrosion test.
[0086] [Table 1]
[0087]
[0088] Based on the high temperature corrosion test conditions shown in Table 1, use Figure 5 The test apparatus shown carried out the test by the high temperature corrosion test method. Figure 5 Details of the experimental setup are described later. The existing material and the new material were sprayed on a test piece (20 mm×20 mm×10 mm (thickness)) of S25C (carbon steel) as a base material, respectively, and the obtained material was used as a test sample. As a comparison object, the same test was carried out on the S25C base material. The test temperatures were 300°C, 345°C, ...
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