Method for determining heat flux density of continuous casting crystallizer based on flux film and air gap dynamic distribution
A technology of continuous casting mold and heat flux, which is applied in the direction of casting equipment, indicating equipment/measuring equipment configuration, manufacturing tools, etc. Accurate description of thermal behavior is difficult and other issues
A technology of continuous casting mold and heat flux, which is applied in the direction of casting equipment, indicating equipment/measuring equipment configuration, manufacturing tools, etc. Accurate description of thermal behavior is difficult and other issues
CN103433448AInactive Publication Date: 2013-12-11NORTHEASTERN UNIV
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0060] figure 1 It is a schematic diagram of the solidification heat transfer of the slab shell in the slab crystallizer. In the slab mold, the molten mold slag on the meniscus flows into the slab shell-mold interface under the vibration of the mold to form a mold slag film. Under the cooling effect of the water-cooled copper plate of the crystallizer, the mold powder film solidifies on the side close to the copper plate to form a glass state, and then transforms into a crystalline state. Since the mold slag shrinks during the solidification process, a large interface thermal resistance is formed at the interface between the mold copper plate and the solid slag, that is, the mold-solid slag interface thermal resistance. In the upper part of the mold, due to the high surface temperature of the initially solidified shell, the mold flux near the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the field of metallurgy continuous casting process numerical analog simulation, and discloses a method for determining heat flux density of a continuous casting crystallizer based on flux film and air gap dynamic distribution. According to a crystallizer copper plate structure and the size of the section of a continuous casting, a two-dimensional transient heat / force coupling finite element model with a 1 / 4 blank shell-crystallizer cross section system as a computation object is built, and the temperature of the surface of the blank shell, the temperature of the hot surface of a copper plate and the width of the clearance of a blank shell-crystallizer interface are determined. If the temperature of the surface of the blank shell is higher than the solidification temperature of casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting a melt cinder layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. If the temperature of the surface of the blank shell is smaller than or equal to the solidification temperature of the casting powder, the heat resistor of the blank shell-crystallizer interface is formed by connecting an air gap layer, a solidification slug layer and a crystallizer-solidification slug interface heat resistor in series. The method has good universality, and is suitable for determining the heat flux density of all existing continuous casting machine types and sectional crystallizers.
Description
technical field [0001] The invention relates to a method for determining the heat flux density of a continuous casting crystallizer based on the dynamic distribution of slag film and air gap, which belongs to the field of numerical simulation of metallurgical continuous casting process. Background technique [0002] As a high-efficiency heat transfer device, the crystallizer undertakes the task of initial solidification of high-temperature molten steel to form billets, and its heat transfer uniformity directly determines the surface quality of continuous casting billets. For this reason, studying the heat transfer behavior of crystallizers has become an important focus in recent years. However, in actual steel continuous casting production, the mold has the characteristics of high temperature and "black box", so it is very difficult to directly detect or measure the heat transfer behavior in the mold. In recent years, with the development of numerical simulation technology ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
11 Dec 2013
Publication
CN103433448A
- IPC
- B22D11/16; B22D2/00
- Inventors
- 蔡兆镇; 朱苗勇