张丽娜, 孙永庆, 梁剑雄, et al. Regression Analysis of Effect of Chemical Composition on Mechanical Properties of X20Cr13 Steel Products[J]. Special Steel, 2016, 37(1): 54-56.
张丽娜, 孙永庆, 梁剑雄, et al. Regression Analysis of Effect of Chemical Composition on Mechanical Properties of X20Cr13 Steel Products[J]. Special Steel, 2016, 37(1): 54-56.DOI:
对钢厂6 t电弧炉+LF+VOD+3 t ESR生产的40 mm×40 mm~80 mm×80 mm X20Cr13不锈钢方钢棒材(/%:0.17~0.22C
0.30~0.80Mn
0.10~0.50Si
0.30~0.80Ni
12.5~14.0Cr)随机抽取89炉次
进行化学成分与力学性能的统计回归分析
得到了该类钢材成分与其力学性能的定量回归关系式:σ
s
=704.9+121.9[Ni
]
-84.9[Mn
]
;σ
b
=638.7+51.1[Ni
]
-40.5[Mn
]
+16.9[Cr
]
;A=81.8-24.8[C
]
+2.7[Mn
]
-4.4[Cr
]
;Z=49.4+47.5[C
]
+4.8[Si
]
+4.3[Ni
]
;AKV=-90.8-55.8[Mn
]
+10.2[Cr
]
+154.1[Si
]
。如工艺参数和棒材规格等因素改变时
应重新回归分析
修正方程系数。
Abstract
The statistic regression analysis on chemical composition and mechanical properties of random sampling 89 heats of steel X20Crl3 (/% : 0. 17 ~0. 22C
0. 30 ~0. 80Mn
0. 10 ~0. 50Si
0. 30 ~0. 80Ni
12.5 ~ 14. OCr) 40 mm x 40 mm ~ 80 mm x 80 mm square bar products produced by 6 t EAF + LF + VOD +3 t ESR process at steelworks has been carried out to get the quantitative regression relation between chemical composition and mechanical properties of this steel series:σs=704. 9 + 121. [Ni
]
-84.9[Mn
]
;σb = 638. 7 + 51. 1 [Ni
]
-40.5[Mn
]
+ 16. 9 [Cr
]
; A=81.8 -24.8 [C
]
+2.7[Mn
]
-4. 4[Cr
]
; Z = 49. 4+47. 5[ C
]
+4. 8 [Si
]
+4.3[Ni
]
; A
kv
= - 90. 8 - 55. 8 [ Mn
]
+10.2[Cr
]
+ 154. 1 [ Si
]
. As the process parameters and size of bar products change
the re-regression
analysis should be carried out to revise the equation factors.