A heating method for billet mixed loading in steel rolling heating furnace
A heating method and heating furnace technology, which is applied in the field of heating when steel billets are mixed in a steel rolling heating furnace, to achieve the effects of improving heating quality, reducing oxidation burning loss, and increasing production capacity
Active Publication Date: 2018-09-18
CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD
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Problems solved by technology
This method only compensates the set value of the furnace temperature, and only considers the mixed loading of hot and cold steel billets, and does not involve other mixed loading conditions
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Embodiment Construction
[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0045] The effective length of the heating furnace selected in this example is 57.4m, and the inner width of the furnace is 10m. There are five sections including heat recovery section, preheating section, first heating section, second heating section, and soaking section. The length of each section is L(i) See table below.
[0046] Table 1 Dimensions of each section of heating furnace
[0047] section name
heat recovery section
Preheating section
a heating section
Second heating section
soaking section
Length / m
14.8
9.3
10.5
11.8
11.0
[0048] In this embodiment, a heating method for mixing billets in a rolling heating furnace comprises the following steps:
[0049] S1: Calculating the furnace temperature setting value range required for heating a single billet according to billet i...
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The invention discloses a heating method used during mixed charging of steel billets in a steel rolling heating furnace. The method comprises the following steps that S1, the furnace temperature set value range required when a single steel billet is heated is calculated according to the information of the steel billet; S2: whether the furnace temperature set value ranges of the two steel billets to be subjected to mixed charging are overlapped or not is judged, and therefore whether continuous charging can be conducted or not is determined; S3, if the furnace temperature set value ranges of the two steel billets are overlapped, continuous mixed charging can be conducted, and the furnace temperature set values of various control sections of the heating furnace are determined; S4, if the furnace temperature set value ranges of the two steel billets are not overlapped, vacancy treatment is needed, and the vacancy distance is determined. By the adoption of the heating method, the oxidizing burning loss of the steel billets during mixed charging of the heating furnace can be reduced, the heating quality of the steel billets is improved, and the energy consumption of the heating furnace is lowered.
Description
technical field [0001] The invention belongs to the field of optimization control of heating furnaces, and in particular relates to a heating method for mixed loading of billets in a steel rolling heating furnace. Background technique [0002] Heating furnace is an important equipment in steel rolling production, and the quality of the heated billet directly restricts the quality of finished products; at the same time, heating furnace is also the main energy-consuming equipment in steel rolling production, and its energy consumption accounts for about 70% of the entire steel rolling process. The steel billets produced by the heating furnace include multiple steel types and specifications, and the temperature of the steel billets entering the furnace is also different. Therefore, the mixing of steel billets during the production of the heating furnace is serious. When mixing, the heating furnace production must meet the heating requirements of all billets, and at the same tim...
Claims
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IPC IPC(8): C21D9/70C21D1/34C21D11/00
CPCC21D1/34C21D9/70C21D11/00
Inventor 朱伟素董斌罗建枫郭英
Owner CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD