CN-119120888-B - Tapping control method, device, equipment and medium for hot-rolling heating furnace

CN119120888BCN 119120888 BCN119120888 BCN 119120888BCN-119120888-B

Abstract

The application discloses a method, a device, equipment and a medium for controlling tapping of a hot rolling heating furnace, and belongs to the technical field of metallurgy. The method comprises the steps of obtaining total target heating time and total actual heating time of a plate blank in a heating furnace, determining target tapping rhythm according to the total target heating time, the total actual heating time, the sectional target heating time, the sectional actual heating time, the first plate blank quantity and the second plate blank quantity between the plate blank and a heating section outlet, and the first plate blank quantity and the second plate blank quantity of the heating furnace, and controlling tapping of the heating furnace according to the target tapping rhythm. The target tapping rhythm determined by the method ensures that the tapping temperature or the end temperature of the slab heated by the heating furnace meets the requirements, improves the production quality and ensures the production efficiency.

Inventors

DONG LIJIE
TANG JING
WANG LEI
WANG HAIYU
Sun Lanyu
SUN LIJUAN
HUANG XIAOBING
LI XUDONG
WANG QIUNA

Assignees

北京首钢股份有限公司
首钢股份公司迁安钢铁公司

Dates

Publication Date: 20260508
Application Date: 20240905

Claims (9)

1. A hot rolling furnace tapping control method, characterized in that the method comprises: Acquiring total target heating time and total actual heating time of a plate blank in a heating furnace, and the sectional actual heating time of the plate blank in a heating section, the sectional target heating time of the heating section, the first plate blank quantity between the plate blank and an outlet of the heating section and the second plate blank quantity between the plate blank and an outlet of the heating furnace; Determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab quantity and the second slab quantity; Controlling the heating furnace to tapping according to the target tapping rhythm; The determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number, includes: acquiring the width of the slab and the steel loading gap; According to the width and the steel loading gap, determining the number of third slabs to be transported out of the outlet of the heating furnace; calculating a first downtime of the heating furnace from the current moment to a period when the third slab number of slabs is transported out, and a second downtime of the heating furnace from the current moment to the period when the second slab number of slabs is transported out; and determining the target tapping rhythm according to the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number.
2. The hot-rolled heating furnace tapping control method according to claim 1, wherein the determining the target tapping cadence according to the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first number of slabs, and the second number of slabs, comprises: Determining a tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity; Determining the tapping rhythm of the heating section according to the first shutdown time, the segmented target heating time, the segmented actual heating time and the first slab quantity; taking the larger one of the tapping rhythm of the heating furnace and the tapping rhythm of the heating section as an initial tapping rhythm; And determining the target tapping rhythm according to the initial tapping rhythm.
3. The hot rolled heating furnace tapping control method according to claim 2, wherein the determining the tapping cadence of the heating furnace based on the second downtime, the total target heating time, the total actual heating time, and the second number of slabs comprises: determining the tapping rhythm of the heating furnace according to the following formula: P Furnace with a heat exchanger ; Wherein P Furnace with a heat exchanger represents the tapping rhythm of the heating furnace, t 1 represents the total target heating time, t 2 represents the total actual heating time, t 3 represents the second downtime, and n 1 represents the second slab quantity.
4. The hot rolling furnace tapping control method according to claim 2, wherein the determining the tapping rhythm of the located heating section based on the first stop time, the segment target heating time, the segment actual heating time, and the first slab number comprises: determining the tapping rhythm of the heating section according to the following formula: P Segment(s) ; Wherein P Segment(s) represents the tapping rhythm of the heating section, t 4 represents the target heating time of the segmentation, t 5 represents the actual heating time of the segmentation, t 6 represents the first stop time, and n 2 represents the first slab quantity.
5. The hot-rolled heating furnace tapping control method according to claim 2, wherein the determining the target tapping rhythm according to the initial tapping rhythm comprises: acquiring a preset rolling line tapping rhythm in a rolling line control system; and taking the largest one of the initial tapping rhythms and the rolling line tapping rhythms of all the slabs in all the heating furnaces on the rolling line as the target tapping rhythms.
6. The hot-rolled heating furnace tapping control method according to claim 1, wherein if the total target heating time is greater than a preset time threshold, the heating section comprises a first heating section, a second heating section and a soaking section; and if the total target heating time is less than or equal to the time threshold, the heating section comprises the soaking section.
7. A hot rolling furnace tapping control device, characterized in that the device comprises: The device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring total target heating time and total actual heating time of a plate blank in a heating furnace, and segmented actual heating time of the plate blank in a heating section, segmented target heating time of the heating section, first plate blank quantity between the plate blank and an outlet of the heating section and second plate blank quantity between the plate blank and an outlet of the heating furnace; the determining module is used for determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number; The control module is used for controlling the heating furnace to tapping according to the target tapping rhythm; The determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number, includes: acquiring the width of the slab and the steel loading gap; According to the width and the steel loading gap, determining the number of third slabs to be transported out of the outlet of the heating furnace; calculating a first downtime of the heating furnace from the current moment to a period when the third slab number of slabs is transported out, and a second downtime of the heating furnace from the current moment to the period when the second slab number of slabs is transported out; and determining the target tapping rhythm according to the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number.
8. An electronic device comprising a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of any of claims 1-6.
9. A computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-6.

Description

Tapping control method, device, equipment and medium for hot-rolling heating furnace Technical Field The application relates to the technical field of metallurgy, in particular to a method, a device, equipment and a medium for controlling tapping of a hot rolling heating furnace. Background The productivity of the hot rolling line is the most important factor affecting the yield of the hot rolling plant and is also the life line of the hot rolling plant. All hot rolling lines are therefore pursuing an extreme efficiency and an extreme productivity. In this context, some automatic control systems for the rolling cadence have been created, which can increase the rolling cadence. At present, some automatic control systems for the rolling rhythm calculate the difference value between the target heating time and the actual heating time of the slab, and then calculate the ratio of the difference value to the number of the slabs to obtain the tapping rhythm of the slab, so that the tapping of the slab is controlled according to the tapping rhythm, and the production efficiency of the heating furnace is improved. Wherein the number of slabs is the number of slabs between the current slab and the outlet of the heating furnace. However, the automatic control system for the rolling rhythm is too much focused on improving the production efficiency, often causes high-end variety steel represented by high-strength steel, and causes lower production quality due to the fact that the tapping temperature or the end-of-section temperature of a slab is unqualified. Disclosure of Invention In view of the above problems, the present application has been made to provide a hot-rolled heating furnace tapping control method, apparatus, device and medium for solving the above problems, which can consider not only the target heating time and actual heating time of a slab in a heating furnace, but also the sectional actual heating time and the sectional target heating time of heating sections where the slab is located, that is, the heating time of the slab in some heating sections, when determining the target tapping rhythm, so that the tapping of the heating furnace is controlled according to the thus determined target tapping rhythm, not only can the production efficiency be improved, but also the tapping temperature and the firing section end temperature of the slab can meet the requirements, and the production quality can be improved. In a first aspect, the present application provides a hot rolling heating furnace tapping control method, the method comprising: Acquiring total target heating time and total actual heating time of a plate blank in a heating furnace, and the sectional actual heating time of the plate blank in a heating section, the sectional target heating time of the heating section, the first plate blank quantity between the plate blank and an outlet of the heating section and the second plate blank quantity between the plate blank and an outlet of the heating furnace; Determining a target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab quantity and the second slab quantity; and controlling the heating furnace to tapping according to the target tapping rhythm. Optionally, the determining the target tapping rhythm according to the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number includes: acquiring the width of the slab and the steel loading gap; According to the width and the steel loading gap, determining the number of third slabs to be transported out of the outlet of the heating furnace; calculating a first downtime of the heating furnace from the current moment to a period when the third slab number of slabs is transported out, and a second downtime of the heating furnace from the current moment to the period when the second slab number of slabs is transported out; and determining the target tapping rhythm according to the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first slab number and the second slab number. Optionally, the determining the target tapping cadence according to the first downtime, the second downtime, the total target heating time, the total actual heating time, the segmented target heating time, the segmented actual heating time, the first number of slabs, and the second number of slabs includes: Determining a tapping rhythm of the heating furnace according to the second downtime, the total target heating time, the total actual heating time and the second slab quantity; Determining the tapping rhythm of the heating section according to the first shutdown time, the segmented target heating time, the segmented actual he