CN102102145A - Method for measuring heating temperature of hot-charged blank - Google Patents
Method for measuring heating temperature of hot-charged blank Download PDFInfo
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- CN102102145A CN102102145A CN2009102487533A CN200910248753A CN102102145A CN 102102145 A CN102102145 A CN 102102145A CN 2009102487533 A CN2009102487533 A CN 2009102487533A CN 200910248753 A CN200910248753 A CN 200910248753A CN 102102145 A CN102102145 A CN 102102145A
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Abstract
The invention discloses a method for measuring the heating temperature of a hot-charged blank, which solves the problem that the heating temperature cannot be measured in the heating process of the hot-charged blank. The invention provides a method for measuring the heating temperature in the heating process of the hot-charged blank, which provides a data basis for the adjustment of a heating system of a heating furnace hot-charged with the blank. A testing cold steel billet (1) and high-temperature-resistant testing equipment (4) are provided. The method is characterized in that: the drilled testing cold steel billet (1) is connected with the wrapped high-temperature-resistant testing equipment (4) and is heated by the heating furnace (6) to form a testing hot steel billet (7), the testing hot steel billet (7) is cooled to a temperature close to the temperature for producing the hot-charged blank and is charged into the heating furnace (6) again, and the temperature in the heating process is measured. By the method, the data basis is provided for the establishment and adjustment of the heating system of the hot-charged blank, so that the aim of saving energy, reducing consumption and improving heating quality are fulfilled.
Description
Technical field
The present invention relates to metallurgical thermal testing field, relate in particular to a kind of method of measuring hot charging base Heating temperature.
Background technology
Along with the increasingly mature of continuous casting technology and development, process furnace blank hot charging becomes a reality, but very big difference is arranged when the heating cycle of process furnace should be with cold charge after the hot charging, if it is bad that heating cycle is adjusted, not only the energy-saving potential of hot charging is not in full use, and causes the waste of the energy, also can influence the heating quality of steel billet, further influence of rolled quality influences the lumber recovery of steel billet.Estimate the quality of heating cycle, be according to indexs such as steel billet heating quality and energy consumptions.Billet heating temperature and whether meet the demands with the plate temperature difference and to indicate the quality of heating quality.
No matter be non-contact measurement or contact type measurement, their weak point is: measurement be the surface temperature of hot charging steel billet, can not truly reflect the temperature-rise period of steel billet, actual Heating temperature and with the plate temperature difference.And the accuracy of contactless measurement also is subjected to influence of various factors such as angle, distance, surrounding environment between metering facility and the measured point; Indivedual manufacturers adopt the method for mathematical model to simulate.Therefore, after the process furnace blank was realized hot charging, on-the-spot related personnel often groped by rule of thumb, the just change a little on the basis of heating cycle when cold charge that has, have even heating cycle when also continuing to use cold charge.
Along with improving constantly of process furnace blank hot charging rate, Heating temperature how accurately to measure the hot charging base is to adjust, improve the key point of heating cycle.
Summary of the invention
Technical problem to be solved by this invention is to solve the hot charging base problem that Heating temperature can't be measured in heat-processed, provide a kind of method that can measure hot charging base Heating temperature in heat-processed, for the adjustment of the process furnace heating cycle that realizes the blank hot charging provides the data basis.
In order to realize the foregoing invention purpose, technical scheme of the present invention is:
Comprise cold steel billet of test and high temperature resistant testing apparatus, it is characterized in that: the cold steel billet of test that will handle through holing is connected with the high temperature resistant testing apparatus through wrapping, be heated into the hot steel billet of test through process furnace again, be cooled to and produce the process furnace of packing into once more after the close temperature of hot charging base, carry out heating process temperature and measure.
Test the thermometer hole that cold steel billet has different depths, thermometer hole is 3, thermometer hole φ 10～φ 12mm.The thermometric galvanic couple inserts in the thermometer hole and carries out thermometric, and the phenomenon for avoiding the thermometric galvanic couple to be moved in test base moving process and causing take off data to be forbidden is installed with fixed ring at thermometer hole top edge 1～2mm place especially, is used for fixing galvanic couple.
Testing cold steel billet is connected by the thermometric galvanic couple with high temperature resistant testing apparatus.The thermometric galvanic couple overlaps one deck quartz socket tube more in addition with the thick zirconium white crystalloid fibrefelt wrapping of one deck 5mm, and tamp with zirconium white crystalloid fibrefelt in the space of quartz socket tube and thermometric galvanic couple, prevents that high-temperature flue gas and air are to the galvanic couple oxidation.The high temperature oxidation resisting zirconium crystalloid fibrefelt that six layers～seven layers 20mm of high temperature resistant testing apparatus outsourcing are thick, around zirconium white crystalloid fibrefelt wrapping layer, wrap up with containing the zircon ceramic fibre module again, prevent the space intrusion of air or furnace gas by zirconium white crystalloid fibrefelt wrapping layer, guarantee thermometric galvanic couple and high temperature resistant testing apparatus under 20～1350 ℃ environment, can works better through the process of heating-cooling-reheat.
High temperature resistant testing apparatus outsourcing high-temperature resistant thermal insulating material carries out insulation, guarantees that thermometric galvanic couple and high temperature resistant testing apparatus all can works better under 20～1350 ℃ environment.
Test hot steel billet and in air, naturally cool to 500～900 ℃.
Present method can obtain the heating curve of hot charging base in heat-processed, and the true Heating temperature of understanding steel billet reaches with the plate temperature difference.Formulation, adjustment to hot charging base heating cycle provide the data basis, thus the purpose that reaches energy-saving and cost-reducing, improves heating quality.
Description of drawings
Fig. 1 measures hot charging base Heating temperature process synoptic diagram for the present invention;
Fig. 2 is the A portion enlarged view of Fig. 1;
Fig. 3 is the B portion enlarged view of Fig. 1;
Fig. 4 is the C portion enlarged view of Fig. 1;
Wherein, 1-tests cold steel billet, 2-thermometer hole, 3-thermometric galvanic couple, the high temperature resistant testing apparatus of 4-, the 5-high-temperature resistant thermal insulating material, 6-process furnace, 7-are tested hot steel billet, the 8-fixed ring, 9-thermo wires, 10-contain the zircon ceramic fibre module, 11-zirconium white crystalloid fiber, 12-quartz socket tube.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further specified:
As shown in Figure 1: with certain process furnace is example, and process furnace 6 used blanks are the production hot charging base of 135 * 1650 * 15000mm.Prepare earlier a cold steel billet 1 of test with the same specification of production hot charging base, material, on the cold steel billet 1 of test, to get 3 points at least, the thermometer hole 2 that bores 3 different depthss, diameter respectively and be 10mm is that the dark point of first test point, 67.5mm is that the dark point of second test point, 125mm is the 3rd test point (locating to record respectively steel billet upper surface, steel billet center and steel billet underlaying surface temperature at these 3) as test point apart from the dark point of steel billet upper surface 10mm.On width, the distance between the test hole 2 is 250～300mm; In the longitudinal direction, to be symmetric points to test cold steel billet 1 center, determine according to the position of process furnace 6 water beams again, guarantee that the temperature of test point can be represented the same plate temperature difference of steel billet at length, width, and can reflect that steel billet is in the temperature at water beam and non-Shui Liang position in heat-processed.
As shown in Figure 2: it is the thermo wires of φ 1.5mm, the NiCr-NiSi of overcoat diplopore porcelain bead that thermometric galvanic couple 3 is installed diameter, thermometric galvanic couple 3 is inserted test hole 2, at thermometer hole 2 top edge 1～2mm place design welding fixed ring 8, and thermometric galvanic couple 3 can not being moved twining a circle on the thermometric galvanic couple in thermometer hole 2 with the thermo wires 9 of φ 1.5mm, the thermometric galvanic couple is connected with high temperature resistant online temperature measuring device 4.
As shown in Figure 4: zirconium white crystalloid fibrefelt 11 wrappings that thermometric galvanic couple 3 usefulness one deck 5mm are thick, overlap one deck quartz socket tube 12 more in addition, tamp with zirconium white crystalloid fibrefelt 11 in the space of quartz socket tube 12 and thermometric galvanic couple 3, prevents that high-temperature flue gas and air are to the galvanic couple oxidation.
As shown in Figure 3: the high temperature oxidation resisting zirconium crystalloid fibrefelt 11 that six layers～seven layers 20mm of high temperature resistant testing apparatus 4 outsourcings are thick, around zirconium white crystalloid fibrefelt wrapping layer, wrap up with containing zircon ceramic fibre module 10 again.The cold steel billet 1 of test, thermometric galvanic couple 3 and high temperature resistant online temperature measuring device 4 are sent into process furnace 6 internal heating.After testing cold steel billet 1 and coming out of the stove, obtain testing hot steel billet 7, return the stock ground, in the hot steel billet 7 handling processes of test, thermometric galvanic couple of being installed 3 and high temperature resistant online temperature measuring device 4 maintain the original state.Test hot steel billet 7 and in air, naturally cool to 700 ℃, again go into process furnace 6 again and heat, record the heating curve of above-mentioned three test point, the first test point temperature was 1237 ℃ when steel billet was come out of the stove, the second test point temperature is 1211 ℃, and the 3rd test point temperature is 1223 ℃.
Claims (9)
1. method of measuring hot charging base Heating temperature, comprise test cold steel billet (1) and high temperature resistant testing apparatus (4), it is characterized in that: the cold steel billet of test (1) that will handle through holing is connected with the high temperature resistant testing apparatus (4) through wrapping, be heated into test hot steel billet (7) through process furnace (6) again, be cooled to and produce the process furnace (6) of packing into once more after the close temperature of hot charging base, carry out heating process temperature and measure.
2. according to the method for the described measurement hot charging of claim 1 base Heating temperature, it is characterized in that: the cold steel billet of described test (1) has the thermometer hole (2) of different depths.
3. according to the method for the described measurement hot charging of claim 1 base Heating temperature, it is characterized in that: the cold steel billet of described test (1) is connected by thermometric galvanic couple (3) with high temperature resistant testing apparatus (4).
4. according to the method for the described measurement hot charging of claim 1 base Heating temperature, it is characterized in that: described high temperature resistant testing apparatus (4) outsourcing high-temperature resistant thermal insulating material (5).
5. according to the method for the described measurement hot charging of claim 1 base Heating temperature, it is characterized in that: the hot steel billet of described test (7) is cooled to 500～900 ℃.
6. according to the method for the described measurement hot charging of claim 2 base Heating temperature, it is characterized in that: described thermometer hole (2) is 3.
7. according to the method for the described measurement hot charging of claim 2 base Heating temperature, it is characterized in that: described thermometer hole (2) top edge is installed with fixed ring (8).
8. according to the method for the described measurement hot charging of claim 3 base Heating temperature, it is characterized in that: described thermometric galvanic couple (3) with zirconium white crystalloid fibrefelt (11) wrapping, overlaps quartz socket tube (12) earlier again.
9. according to the method for the described measurement hot charging of claim 4 base Heating temperature, it is characterized in that: described high-temperature resistant thermal insulating material (5) is for high temperature oxidation resisting zirconium crystalloid fibrefelt (11) and contain zircon ceramic fibre module (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910248753.3A CN102102145B (en) | 2009-12-22 | 2009-12-22 | Method for measuring heating temperature of hot-charged blank |
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| CN200910248753.3A CN102102145B (en) | 2009-12-22 | 2009-12-22 | Method for measuring heating temperature of hot-charged blank |
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| CN102102145B CN102102145B (en) | 2014-03-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021312A (en) * | 2009-09-22 | 2011-04-20 | 上海宝信软件股份有限公司 | Scheduling method of hot rolling heating furnace energy based on heat balance |
| CN104713657A (en) * | 2015-02-02 | 2015-06-17 | 北京科技大学 | Measuring method for determining actual inner temperature of steel block in resistance furnace |
| CN104864973A (en) * | 2015-06-02 | 2015-08-26 | 安徽工业大学 | Thermocouple-buried temperature test method in small square billet high temperature heating process |
| CN108318149A (en) * | 2017-01-18 | 2018-07-24 | 无锡飞而康精铸工程有限公司 | A kind of high-precision titanium ingot temperature hysteresis measurement method |
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| CN2645056Y (en) * | 2003-03-26 | 2004-09-29 | 武汉钢铁(集团)公司 | Hot-rolled sheet scanning temperature measurement apparatus before entering furnace |
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2009
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021312A (en) * | 2009-09-22 | 2011-04-20 | 上海宝信软件股份有限公司 | Scheduling method of hot rolling heating furnace energy based on heat balance |
| CN102021312B (en) * | 2009-09-22 | 2013-08-21 | 上海宝信软件股份有限公司 | Scheduling method of hot rolling heating furnace energy based on heat balance |
| CN104713657A (en) * | 2015-02-02 | 2015-06-17 | 北京科技大学 | Measuring method for determining actual inner temperature of steel block in resistance furnace |
| CN104864973A (en) * | 2015-06-02 | 2015-08-26 | 安徽工业大学 | Thermocouple-buried temperature test method in small square billet high temperature heating process |
| CN104864973B (en) * | 2015-06-02 | 2018-01-09 | 安徽工业大学 | A kind of even buried formula temperature testing method of small dimension square billet high-temperature heating process |
| CN108318149A (en) * | 2017-01-18 | 2018-07-24 | 无锡飞而康精铸工程有限公司 | A kind of high-precision titanium ingot temperature hysteresis measurement method |
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| Publication number | Publication date |
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| CN102102145B (en) | 2014-03-12 |
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