CN1040662C - Optimal speed heating process for steel - Google Patents
Optimal speed heating process for steel Download PDFInfo
- Publication number
- CN1040662C CN1040662C CN94110033A CN94110033A CN1040662C CN 1040662 C CN1040662 C CN 1040662C CN 94110033 A CN94110033 A CN 94110033A CN 94110033 A CN94110033 A CN 94110033A CN 1040662 C CN1040662 C CN 1040662C
- Authority
- CN
- China
- Prior art keywords
- heating
- steel
- temperature
- furnace temperature
- energy consumption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Heat Treatment Processes (AREA)
Abstract
The present invention belongs to a steel rolling and heating production process for metallurgy enterprises. Steel ingots can enhance the heating furnace temperature in the process of heating, the heating time can be shortened, but large fuel flow is needed, and the energy consumption is increased; the fuel flow can be reduced by reducing the heating furnace temperature, but the heating time needs to be prolonged in order to achieve the requirements of steel ingot discharge, and the energy consumption is increased. The present invention adopts modernization microcomputer technology to simulate, calculate and determine the optimal heating parameter of steel by developing the mathematical models of the overall heating process of different furnaces and different heating materials. For example, the heating technology of primary rolling steel ingots can lower the heating temperature by 30 to 40 DEG C and prolong the heating time by 40 to 50 min. Because the heating temperature is lowered, the heating burning loss is reduced, and the present invention has obvious energy saving effect.
Description
The invention belongs to the procedure for steel rolling in metallurgical industry heating process.
According to metallurgical Thermal Power Engineering theory, steel improves metallurgical furnace kiln heating furnace temperature and can shorten its heat-up time, but need big fuel flow in heat-processed, causes energy consumption to increase; If reduce the heating furnace temperature, can reduce fuel flow, but, need to prolong heat-up time for reaching the requirement of coming out of the stove of steel ingot, also cause energy consumption to increase.
According to the extremum principle in the mathematical analysis, wherein must there be minimum Heating temperature of energy consumption and heat-up time, this has best travel speed with automobile is a principle.
The objective of the invention is to determine most economical heating parameters, the optimal speed heating process of a steel is provided, it can realize the heating of steel with minimum energy consumption and scaling loss.
The object of the present invention is achieved like this: by developing the be heated hot state mathematical model of whole process of different metallurgical furnace kilns, different heating material, the off-line simulation that adopts modernized microcomputer technology to carry out hundreds thousand of data calculates, the steel ingot of different ingot shapes, steel grade and ingot temperature is carried out the energy input accumulative total of different heating technology, make curve, be parabola shaped, find out para-curve lower-most point (extreme point) and just found economic heating parameters (heating furnace temperature, heat-up time).With soaking pit heating ingot temperature is 600 ℃, and steel grade is an example for the soft steel slab ingot, and its determining step is as follows:
(1) determines that at first each temperature field of this steel ingot distributes (also will determine to solidify field distribution to liquid core ingot), calculate and actual measurement according to the stove heat balance theory then, determine the different heating technology instantaneous energy consumption curve of (heating furnace temperature, heat-up time);
(2) roll requirement according to sending of this steel grade and ingot shape, determine to reach the rolling needs time of (containing heat), except that considering the temperature field, will guarantee that also liquid core rate is not more than 6%, with anti-rolling bloated steel accident to liquid core ingot;
(3) end the energy consumption total value of accumulative total different heating technology to reaching rolling requirement from shove charge;
(4) the energy consumption total value with different heating technology compares judgement one by one, tries to achieve energy consumption Schwellenwert (para-curve extreme value), determines the economic heating parameters of this material, and promptly heating furnace temperature is 1338 ℃, and be 5.17h heat-up time.
The optimum velocity heating parameters of the gentle steel grade of other various ingots sees Table 1.
The economic pace heating parameters of all kinds of steel ingots of table 1
| Shove charge ingot temperature ℃ | Side's ingot, 7～8t | The shoulder ingot, 10～15; | ||||||||||
| The guiding principle kind | Steel grade | |||||||||||
| Low-carbon (LC) | Middle carbon | High-carbon | Low-carbon (LC) | Middle carbon | High-carbon | |||||||
| The heating furnace temperature, ℃ | Heat-up time, h | The heating furnace temperature, ℃ | Heat-up time, h | The heating furnace temperature, ℃ | Heat-up time, h | The heating furnace temperature, ℃ | Heat-up time, h | The heating furnace temperature, ℃ | Heat-up time, h | The heating furnace temperature, ℃ | Heat-up time, h | |
| 0 | 1360 | 8.58 | 1350 | 9.25 | 1340 | 10.58 | 1360 | 7.92 | 1350 | 8.83 | 1340 | 10.83 |
| 300 | 1349 | 7.58 | 1339 | 7.42 | 1329 | 9.58 | 1349 | 7.08 | 1339 | 8.00 | 1329 | 9.83 |
| 400 | 1345 | 6.85 | 1335 | 6.75 | 1326 | 8.83 | 1343 | 6.33 | 1335 | 7.00 | 1325 | 8.83 |
| 500 | 1342 | 5.92 | 1332 | 6.17 | 1322 | 7.50 | 1342 | 5.92 | 1332 | 6.25 | 1322 | 8.00 |
| 600 | 1338 | 5.08 | 1328 | 5.67 | 1318 | 6.50 | 1338 | 5.17 | 1323 | 5.58 | 1313 | 7.00 |
| 700 | 1334 | 4.67 | 1324 | 6.08 | 1314 | 5.67 | 1334 | 4.57 | 1324 | 5.00 | 1314 | 6.08 |
| 750 | 1333 | 4.42 | 1323 | 4.75 | 1313 | 5.17 | 1333 | 4.33 | 1323 | 4.67 | 1313 | 5.75 |
| 800 | 1331 | 4.17 | 1321 | 4.42 | 1311 | 4.67 | 1331 | 4.08 | 1321 | 4.42 | 1313 | 5.60 |
| 850 | 1329 | 4.00 | 1319 | 4.17 | 1309 | 4.33 | 1329 | 3.67 | 1319 | 4.08 | 1309 | 5.08 |
| 900 | 1327 | 3.92 | 1317 | 4.08 | 1307 | 4.08 | 1327 | 3.50 | 1317 | 3.92 | 1307 | 5.00 |
| 950 | 1325 | 3.67 | 1316 | 3.92 | 1305 | 3.83 | 1325 | 3.17 | 1315 | 3.57 | 1305 | 4.83 |
| 1000 | 1323 | 3.60 | 1313 | 3.75 | 1303 | 3.67 | 1323 | 2.83 | 1313 | 3.42 | 1303 | 4.67 |
Concerning blooming soaking pit furnace, under the stove situation identical, compare with common burning steel technology with the heating steel ingot, reduce by 30～40 ℃ of heating furnace temperature, prolong 40～50min heat-up time.Though the present invention needs to prolong heat-up time, owing to reduced Heating temperature, total effect still makes the heating scaling loss reduce, and energy consumption reduces.
The present invention has realized the optimal speed heating process of steel, but energy efficient not only, but also can reduce the oxidization burning loss of steel in heat-processed because steel in heat-processed oxidization burning loss and heat-up time relation in direct ratio, become the cube exponential relationship with Heating temperature.This invention reduces by 30～40 ℃ of heating furnace temperature, has and reduces the scaling loss effect significantly.
Above example is embodiment, and rolling steel ingot 2,100,000 t altogether compare energy-conservationly 9.42% with ordinary process, reduce scaling loss 13%.
Claims (1)
1, a kind of steel rolling heating means is characterized in that, for blooming soaking pit furnace, under the stove situation identical with the heating steel ingot, compare with common burning steel technology, reduce by 30～40 ℃ of heating furnace temperature, prolong 40～50 minutes heat-up times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110033A CN1040662C (en) | 1994-01-19 | 1994-01-19 | Optimal speed heating process for steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110033A CN1040662C (en) | 1994-01-19 | 1994-01-19 | Optimal speed heating process for steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1105707A CN1105707A (en) | 1995-07-26 |
| CN1040662C true CN1040662C (en) | 1998-11-11 |
Family
ID=5034026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94110033A Expired - Fee Related CN1040662C (en) | 1994-01-19 | 1994-01-19 | Optimal speed heating process for steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1040662C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7606601B2 (en) | 2003-07-04 | 2009-10-20 | Lg Electronics Inc. | Fast call setup system and method in a mobile communications system |
| DE102009051157B4 (en) * | 2009-10-29 | 2011-09-22 | Benteler Automobiltechnik Gmbh | Chamber furnace with over-temperature |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0318077A1 (en) * | 1987-11-11 | 1989-05-31 | Hoogovens Groep B.V. | Method for bringing a plurality of steel slabs to rolling temperature in a furnace |
| CN1052698A (en) * | 1989-12-21 | 1991-07-03 | 山西太原钢铁公司 | Expert systems is used in soaking furnace steel-smelting control |
-
1994
- 1994-01-19 CN CN94110033A patent/CN1040662C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0318077A1 (en) * | 1987-11-11 | 1989-05-31 | Hoogovens Groep B.V. | Method for bringing a plurality of steel slabs to rolling temperature in a furnace |
| CN1033842A (en) * | 1987-11-11 | 1989-07-12 | 霍德芬斯;格鲁普公司 | Steel billet in the stove is heated to the method for rolling temperature |
| CN1052698A (en) * | 1989-12-21 | 1991-07-03 | 山西太原钢铁公司 | Expert systems is used in soaking furnace steel-smelting control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1105707A (en) | 1995-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106906352A (en) | A kind of heating means when heater for rolling steel steel billet is loaded in mixture | |
| CN1040662C (en) | Optimal speed heating process for steel | |
| CN201071380Y (en) | Vertical segmenting thermal treatment industry furnace | |
| JPH0713271B2 (en) | Metal plate continuous annealing equipment and metal plate continuous annealing method | |
| CN112831632A (en) | Online normalizing method for SAE1050M round steel | |
| JPS61231117A (en) | Re-heating furnace | |
| CN108469176B (en) | Heating furnace heating means and heating furnace heating system | |
| CN220887633U (en) | Multi-furnace body heating furnace | |
| CN203382799U (en) | Roller rod composite normalizing and annealing furnace | |
| JPS57169075A (en) | Direct fire type heating furnace for heating of steel strip in continuous metal hot dipping device | |
| CN2126401U (en) | Car-type annealing furnace | |
| JPS5662928A (en) | Furnace temperature setting method of heating zone in a continuous annealing furnace | |
| JPS5625933A (en) | Temperature controlling method for steel billet in heating furnace | |
| CN114164329A (en) | Process for improving heating production efficiency of high-carbon chromium bearing steel | |
| CN116814914A (en) | Heat treatment process for correcting deformation of machine tool casting | |
| Andreev et al. | Developing an Optimal Control System for Workpiece Heating in a Continuous Furnace Using the Digital Twin Technology | |
| Kaihara et al. | Optimum Operation System of a Batch-Type Annealing Furnace | |
| CN114737030A (en) | Online normalizing method for 55 steel | |
| CN1559712A (en) | Rolling forming method of super alloy and heat resisting steel rod | |
| CN117265423A (en) | Method for producing HRB500E screw steel by direct rolling without heating and heat preservation | |
| JPS56105429A (en) | Control of furnace temperature of multizone type continuous heating furnace | |
| CN114752753A (en) | Furnace temperature setting method suitable for H-shaped steel rolling heating furnace | |
| JPS61119614A (en) | Operating method of continuous heating furnace | |
| CN107586922A (en) | The online immediate quenching technique of U71MnU75V rolling steel balls | |
| CN118308584A (en) | Annealing furnace energy-saving cooling method based on performance prediction model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |