基于二次枝晶间距变化特征的连铸方坯<strong>CET</strong>位置判断新方法

基于二次枝晶间距变化特征的连铸方坯CET位置判断新方法

郭东伟, 郭坤辉, 张福利, 张飞, 曹江海, 侯自兵

A New Method for CET Position Determination of Continuous Casting Billet Based on the Variation Characteristics of Secondary Dendrite Arm Spacing

GUO Dongwei, GUO Kunhui, ZHANG Fuli, ZHANG Fei, CAO Jianghai, HOU Zibing

表2 温度场计算过程中各部分参数及计算公式^[18~20]

Table 2 Parameters and relevant computational formulas at different sections in the calculation of temperature field^[18-20]

Section	Length	Water amount		Boundary condition	Computational formula
	m	m³·h^-1
		No.1	No.2
Mold	0.9	114	114	q_m	$q_{m} = (2.68 - β \sqrt[]{t_{m}}) \times 10^{3}$
Foot roller section	0.5	4.16	5.19	q_f = h_f(T_b - T_f)	h_f = 153.6(w / 60)^0.351
First section of secondary cooling zone	2.7	6.69	8.24	q_k = h_k(T_b - T_w)	h_k = 160 + 8.35w^0.851
Second section of secondary cooling zone	2.9	2.08	2.48	q_k = h_k(T_b - T_w)	h_k = 200 + 10.44w^0.851
Third section of secondary cooling zone	3.5	1.63	2.04	q_k = h_k(T_b - T_w)	h_k = 200 + 10.44w^0.851
Air cooling zone	5.4	-	-	q_a = ɛσ(T_b⁴ - T_a⁴)	ε = 0.8