Influence of Multi-Step Heating Methods on Properties of Al–Si Coating Boron Steel Sheet

In this study, the influence of the multi-step heating methods, such as two-step heating methods and three-step heating methods, on the properties of Al–Si coating boron steel sheet were evaluated by using the Gleeble-3500 thermal simulator. The evolution of microstructure and 3D surface topography of the Al–Si coating were also investigated. The results showed that the heating rates of 50 °C/s, named rapid heating, at the stage of 20–500 °C did not significantly influence the microstructure and 3D surface topography of the Al–Si coating in the two-step heating methods. The results also indicated that the volume fractions of Fe3Al2Si3 intermetallic compound, FeAl intermetallic compound and a-Fe phase in the Al–Si coating reduced by rapid heating at the stage of 700–930 °C in the three-step heating methods. The roughness of 3D surface topography of the Al–Si coating increased by rapid heating at the stage of 700–930 °C. Rapid heating at the stage of 700–930 °C had little influence on the porosity of the Al–Si coating. The results provided a theoretical basis for the popularization and application of rapid heating in the Al–Si coating boron steel sheet.

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Similarity Evaluation of 3D Surface Topography Measurements

Measurement Science and Technology ◽

10.1088/1361-6501/ac1b41 ◽

2021 ◽

Author(s):

Shaodong Wang ◽

Xiao Zhang ◽

Yi Zheng ◽

Beiwen Li ◽

Hantang Qin ◽

...

Keyword(s):

Surface Topography ◽

3D Surface ◽

3D Surface Topography

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A learning-based self-calibration for correcting distortion and field curvature in 3D surface topography measurement

Optics Letters ◽

10.1364/ol.427142 ◽

2021 ◽

Author(s):

Xiaoyu You ◽

Yuhang Wang ◽

Yifei Li ◽

Jian Liu ◽

Kang Gu

Keyword(s):

Surface Topography ◽

Self Calibration ◽

3D Surface ◽

Field Curvature ◽

3D Surface Topography

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Leakage Monitoring in Static Sealing Interface Based on Three Dimensional Surface Topography Indicator

Journal of Manufacturing Science and Engineering ◽

10.1115/1.4040620 ◽

2018 ◽

Vol 140 (10) ◽

Cited By ~ 10

Author(s):

Yiping Shao ◽

Yaxiang Yin ◽

Shichang Du ◽

Tangbin Xia ◽

Lifeng Xi

Keyword(s):

Surface Topography ◽

Three Dimensional ◽

Machining Process ◽

Void Volume ◽

Engineering Practice ◽

High Definition ◽

Monitoring Method ◽

3D Surface ◽

3D Surface Topography ◽

Leakage Monitoring

Leakage directly affects the functional behavior of a product in engineering practice, and surface topography is one of the main factors in static seal to prevent leakage. This paper aims at monitoring the leakage in static sealing interface, using three-dimensional (3D) surface topography as an indicator. The 3D surface is measured by a high definition metrology (HDM) instrument that can generate millions of data points representing the entire surface. The monitoring approach proposes a series of novel surface leakage parameters including virtual gasket, contact area percentage (CAP), void volume (VV), and relative void volume (SWvoid) as indicators. An individual control chart is adopted to monitor the leakage surface of the successive machining process. Meantime, based on the Persson contact mechanics and percolation theory, the threshold of leakage parameter is found using finite element modeling (FEM). Experimental results indicate that the proposed monitoring method is valid to precontrol the machining process and prevent leakage occurring.

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