CN102768164A - Device and method for measuring oxidation loss ratio of billet - Google Patents
Device and method for measuring oxidation loss ratio of billet Download PDFInfo
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- CN102768164A CN102768164A CN2012102729500A CN201210272950A CN102768164A CN 102768164 A CN102768164 A CN 102768164A CN 2012102729500 A CN2012102729500 A CN 2012102729500A CN 201210272950 A CN201210272950 A CN 201210272950A CN 102768164 A CN102768164 A CN 102768164A
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- test piece
- billet
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- burning loss
- oxidization burning
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Abstract
The invention relates to a device and method for measuring an oxidation loss ratio of a billet. The device comprises a honeycomb, a test piece, and a heat-resistant rod arranged in the honeycomb. The test piece is provided thereon with holes, and is hung on the heat-resistant rod through the holes. The test piece has the same steel type with that of the measured billet. The method comprises measuring a weight A1 of the test piece by using an electronic balance, then heating the device for measuring the oxidation loss ratio of the billet on the billet, taking out the test piece, removing scale on the surface of the test piece, weighing a weight A2 of the test piece by using the electronic balance, and calculating an oxidation loss G of the test piece, wherein G=(A1-A2)/S1/H, S1 represents a surface area of the test piece, and H represents a heating time; and finally calculating the oxidation loss ratio P(%) of the billet, wherein P=(G*S2*H)/(V*gamma), S2 represents a surface area of the billet, V represents a volume of the billet, and gamma represent a specific gravity of the billet. The invention has positive effects of low labor intensity, preventing influence to normal production, high accuracy of measured oxidation loss ratios of billets, scientificity, and practicality.
Description
Technical field
The present invention relates to a kind of measurement mechanism and measuring method of billet oxidization burning loss rate, the apparatus and method especially for hot-rolled process measurement steel billet oxidization burning loss rate in heating furnace belong to the metallurgy industry technical field of steel rolling.
Background technology
At present, metallurgy industry hot-rolled process, the steel billet oxidization burning loss in hot procedure is the problem that iron and steel enterprise extremely pays close attention to always, and it directly influences the lumber recovery and the economic benefit of hot-rolled process.Steel billet mainly occurs in the heating furnace at the oxidization burning loss of course of hot rolling, and the oxidization burning loss of therefore accurately measuring in the heating furnace is the element task of grasping the hot-rolled process condition of production, and enterprise is reduced cost, and increasing the benefit is significant.Usually the measuring method of oxidization burning loss has two kinds, and the one, the indirect method of measurement, the iron scale thickness (steel billet after coming out of the stove is taken a sample) that in heating furnace, generates through the measurement steel billet calculates the oxidization burning loss rate; The oxidization burning loss rate error that this method is calculated is big.The 2nd, adopt directly measurement and calculate the method that combines; This method generally is used for hot rolling mill; Earlier the steel billet of some is carried weighing going into the stokehold with overhead traveling crane and vehicle, weighing is carried out to corresponding product in the rolling back of coming out of the stove, and calculates the oxidization burning loss rate with weight-loss method again.This method need be employed overhead traveling crane and vehicle, wastes time and energy, and cost is higher, and influences the ordinary production tissue.
Summary of the invention
The purpose of this invention is to provide a kind of device and method of measuring the billet oxidization burning loss rate,, calculate the oxidization burning loss rate of steel billet, solve the problems referred to above that background technology exists through the actual amount of oxidation loss of accurate measurement test piece unit area.
Technical scheme of the present invention is:
A kind of device of measuring the billet oxidization burning loss rate comprises honeycomb ceramics, test piece, heat-resisting rod, and heat-resisting rod is located in the honeycomb ceramics, and test piece is provided with the hole, and hangs on the heat-resisting rod through the hole, and test piece is identical with the steel grade of measured steel billet.
Test piece is two, is arranged symmetrically on the heat-resisting rod, and honeycomb ceramics (1) is a cube, and pass is a hexagon ring.
Test piece length is 60-70mm, and wide is 30-35mm, and thickness is 2.3-5mm, and weight is in the balance measurement scope.
A kind of method of measuring the billet oxidization burning loss rate is at first used the weight A of electronics balance measurement test piece
1, the device that will measure the billet oxidization burning loss rate then is placed on the steel billet, and this device comprises honeycomb ceramics, test piece, heat-resisting rod, and heat-resisting rod is located in the honeycomb ceramics; Test piece is provided with the hole, and hangs on the heat-resisting rod through the hole, and test piece is identical with the steel grade of measured steel billet; Honeycomb ceramics is placed on the measured steel billet, and the heating furnace of packing into heats, and heating finishes; Take out test piece, remove scale on surface, re-use its weight of electronic balance weighing A
2, calculate the oxidization burning loss G of test piece, G=(A
1-A
2)/S
1/ H, wherein S
1Be the test piece surface area, H: heat time heating time; Calculate the oxidization burning loss rate P (%) of steel billet at last, P=(G* S
2* H)/(V* γ), wherein S
2Be the surface area of steel billet, V is the volume of steel billet, and γ is the proportion of steel.
Good effect of the present invention is: the test piece volume is little, in light weight, and test process need not use overhead traveling crane and vehicle to carry out the steel billet carrying, and hand labor intensity is low, does not influence the ordinary production tissue, and the oxidization burning loss rate accuracy of the steel billet of measuring is high, and science is practical.
Description of drawings
Fig. 1 is a front view of the present invention
Fig. 2 is a side view of the present invention
Among the figure: 1. honeycomb ceramics, 2. test piece, 3. heat-resisting rod
Embodiment
Through embodiment the present invention is further specified below.
With reference to Fig. 1,2, a kind of device of measuring the billet oxidization burning loss rate comprises honeycomb ceramics, test piece, heat-resisting rod, makes two test pieces with steel billet; Be of a size of 60 * 30 * 2.3mm, test piece 2 centre-drilling hole Ф 10mm, heat-resisting excellent 3 is the reinforcing bar of Ф 8 * 200mm; Honeycomb ceramics 1 is a fire resistive material, and physical dimension 100 * 100 * 100mm, pass are hexagon ring; Hole count 20 * 35, aperture 5mm, wall thickness 1mm; The reinforcing bar rotation is inserted on the honeycomb ceramics, and two test piece symmetrical balances are suspended on the reinforcing bar both sides, and the steel grade of test piece is Q195 L.
A kind of method of measuring the billet oxidization burning loss rate, the steel grade of steel billet is Q195L, is of a size of 150 * 245 * 6000 (mm).At first measure specimen size, be accurate to 0.01mm, and calculate its surface area S with micrometer caliper
1, use electronics balance measurement test piece weight A again
1, being accurate to 0.0001g, the device that will measure the billet oxidization burning loss rate then is placed on the steel billet; The heating furnace of packing into heats together, and be 1.467h heat time heating time, takes out test piece; Surface oxidation iron is removed in cooling back, and remaining iron oxide is removed in pickling again, uses the net weight A after the electronic balance weighing test piece oxidation then
2According to these measurement data, at first calculate the oxidization burning loss G of test piece, G=(A
1-A
2)/S
1/ H,
Wherein: A
1-A
2Be the weight difference (weightlessness) before and after the heating scaling loss
S
1Be the test piece surface area,
H: heat time heating time;
Calculate the oxidization burning loss rate P (%) of steel billet at last, P=(G* S
2* H)/(V* γ),
Wherein: G is the oxidization burning loss of test piece
S
2Be the surface area of steel billet,
V is the volume of steel billet,
γ is the proportion of steel.
Result of calculation such as following table:
Table 1: test piece computational data table
Table 2: steel billet computational data table
This result of calculation accuracy is high, near actual oxidation burn out rate.
Claims (3)
1. device of measuring the billet oxidization burning loss rate; It is characterized in that comprising honeycomb ceramics (1), test piece (2), heat-resisting rod (3), heat-resisting rod is located in the honeycomb ceramics, and test piece is provided with the hole; And hang on the heat-resisting rod through the hole, test piece is identical with the steel grade of measured steel billet.
2. according to the device of the said measurement billet oxidization burning loss rate of claim 1, it is characterized in that test piece is two, be arranged symmetrically on the heat-resisting rod that honeycomb ceramics (1) is a cube, pass is a hexagon ring.
3. method of measuring the billet oxidization burning loss rate is characterized in that at first using the weight A of electronics balance measurement test piece
1, the device that will measure the billet oxidization burning loss rate then is placed on the steel billet, and this device comprises honeycomb ceramics, test piece, heat-resisting rod, and heat-resisting rod is located in the honeycomb ceramics; Test piece is provided with the hole, and hangs on the heat-resisting rod through the hole, and test piece is identical with the steel grade of measured steel billet; Honeycomb ceramics is placed on the measured steel billet, and the heating furnace of packing into heats, and heating finishes; Take out test piece, remove scale on surface, re-use its weight of electronic balance weighing A
2, calculate the oxidization burning loss G of test piece, G=(A
1-A
2)/S
1/ H, wherein S
1Be the test piece surface area, H: heat time heating time; Calculate the oxidization burning loss rate P (%) of steel billet at last, P=(G* S
2* H)/(V* γ), wherein S
2Be the surface area of steel billet, V is the volume of steel billet, and γ is the proportion of steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102729500A CN102768164A (en) | 2012-08-02 | 2012-08-02 | Device and method for measuring oxidation loss ratio of billet |
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| CN2012102729500A CN102768164A (en) | 2012-08-02 | 2012-08-02 | Device and method for measuring oxidation loss ratio of billet |
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|---|---|
| CN102768164A true CN102768164A (en) | 2012-11-07 |
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ID=47095645
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990830A (en) * | 2015-06-19 | 2015-10-21 | 武汉钢铁(集团)公司 | Method and device for measuring effect on billet surface oxidation from furnace inside atmosphere of heating furnace |
| CN109142133A (en) * | 2018-06-29 | 2019-01-04 | 首钢京唐钢铁联合有限责任公司 | A kind of measurement method of slab oxidization burning loss |
| CN110057712A (en) * | 2019-04-24 | 2019-07-26 | 首钢集团有限公司 | A kind of oxidization burning loss rate measurement system and method |
| CN112285268A (en) * | 2020-10-29 | 2021-01-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Simulation test device and method for oxidation burning loss of steel billet |
| CN112444464A (en) * | 2020-10-14 | 2021-03-05 | 首钢京唐钢铁联合有限责任公司 | Method and device for determining oxidation burning loss rate of plate blank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990830A (en) * | 2015-06-19 | 2015-10-21 | 武汉钢铁(集团)公司 | Method and device for measuring effect on billet surface oxidation from furnace inside atmosphere of heating furnace |
| CN109142133A (en) * | 2018-06-29 | 2019-01-04 | 首钢京唐钢铁联合有限责任公司 | A kind of measurement method of slab oxidization burning loss |
| CN110057712A (en) * | 2019-04-24 | 2019-07-26 | 首钢集团有限公司 | A kind of oxidization burning loss rate measurement system and method |
| CN110057712B (en) * | 2019-04-24 | 2022-01-18 | 首钢集团有限公司 | System and method for measuring oxidation burning loss rate |
| CN112444464A (en) * | 2020-10-14 | 2021-03-05 | 首钢京唐钢铁联合有限责任公司 | Method and device for determining oxidation burning loss rate of plate blank |
| CN112285268A (en) * | 2020-10-29 | 2021-01-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Simulation test device and method for oxidation burning loss of steel billet |
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Application publication date: 20121107 |