Numerical simulation of thermal processing in continuously cast beam blank
-
摘要: 為了解決連鑄異形坯的表面及內部裂紋問題,以實測異形坯連鑄工藝參數作邊界條件,采用有限元方法,利用ANSYS商業軟件對鑄坯的凝固發展過程進行了數值模擬,模擬結果與實測鑄坯表面溫度吻合.計算結果表明,對于SS400異型坯,在當前的工藝條件下,僅有圓角處的表面溫度在二冷區中前段,溫度處于高溫塑性區,鑄坯的其他部位表面溫度均落在相應鋼種的低溫脆性區.因此二冷區可以進一步采用弱冷方式,使異型坯在二冷段和矯直輥前的表面溫度處于高溫塑性區.Abstract: The solidification in a beam blank was numerically simulated by using ANSYS commercial software in order to analyze surfacal and internal cracks in the beam blank. The boundary conditions were based on measured technical parameters in practical production. The simulated result is in accordance with the measured surface temperature of the beam blank. It is shown that the surfacal temperature of SS400 beam blank is in the brittleness temperature zone except that of the fillet under the present condition. In order to make the surface temperature of the beam blank into the plastic temperature zone before it goes into the straightening zone, it is necessary to weaken the intensity of secondary cooling.
-
Key words:
- beam blank /
- continuous casting /
- solidification /
- second cooling /
- numerical simulation
-
點擊查看大圖
計量
- 文章訪問數: 158
- HTML全文瀏覽量: 21
- PDF下載量: 8
- 被引次數: 0
下載:
