CN114350890A - Method for preventing cold steel from being bonded at joint of sublance and probe - Google Patents
Method for preventing cold steel from being bonded at joint of sublance and probe Download PDFInfo
- Publication number
- CN114350890A CN114350890A CN202111663671.2A CN202111663671A CN114350890A CN 114350890 A CN114350890 A CN 114350890A CN 202111663671 A CN202111663671 A CN 202111663671A CN 114350890 A CN114350890 A CN 114350890A
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- Prior art keywords
- sublance
- probe
- joint
- graphite
- organic coating
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- 239000000523 sample Substances 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 23
- 239000010439 graphite Substances 0.000 claims abstract description 23
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 10
- 239000004571 lime Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000011241 protective layer Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a method for preventing cold steel from being bonded at the joint of a sublance and a probe, which comprises the following steps: s1, mixing industrial raw materials of graphite powder, lime powder and an industrial mechanical lubricant according to a certain proportion to prepare a graphite organic coating; s2, smearing the graphite organic coating prepared in the step S1 on the joint of the sublance and the probe to form a graphite organic coating as an effective protective layer; and S3, after the sublance is used for a certain period, smearing the graphite organic coating again to form a graphite organic coating, and repeating the steps in a circulating way. The invention aims to provide a method for preventing cold steel from being bonded at the joint of a sublance and a probe, which solves the problem of low measurement rate caused by bonding cold steel at the joint of the sublance and the probe in the background technology, improves the end point measurement rate, reduces the waste condition of the probe and reduces the production cost.
Description
Technical Field
The invention relates to the field of use and maintenance of converter steelmaking sublance equipment, in particular to a method for preventing cold steel from being bonded at the joint of a sublance and a probe.
Background
The sublance is an important tool of an intelligent automatic steelmaking model system, and the full-automatic measurement function of the smelting process is realized under the control of a PLC (programmable logic controller). In each smelting period of the converter, two measurement processes are carried out, a TSC probe is used for measuring temperature, sampling and carbon determination in the blowing process, and a TSO probe is used for measuring temperature, sampling, oxygen determination and molten pool liquid level in the blowing end point.
In the measuring process, the probe needs to penetrate through a slag layer of a molten pool and go deep into molten steel to acquire the information of the molten steel in the furnace. When the TSC probe is used for measurement along with the fluctuation of the liquid level of a converter molten pool in the blowing process, molten steel is easy to bond at the joint of the sublance and the probe, and the molten steel is condensed after the sublance leaves the converter molten pool, so that the condition of bonding cold steel occurs. The bonded cold steel makes the contact signal virtual connection when the sublance probe is connected or measured next time, and the condition in the molten bath can not be measured correctly. Thus severely affecting the sublance measurement rate.
The reduction of the measurement rate seriously affects the judgment of the converter terminal on the molten steel condition, and meanwhile, after the measurement fails, the probe cannot be reused, so that the waste of a large number of sublance probes is caused, and the production cost is increased.
Through search query, the document and the invention patent which are the same as or similar to the patent do not exist.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for preventing cold steel from being bonded at the joint of a sublance and a probe, which solves the problem of low measurement yield caused by the bonding of the cold steel at the joint of the sublance and the probe in the background technology, improves the end point measurement yield, reduces the waste condition of the probe and reduces the production cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a method for preventing cold steel from being bonded at the joint of a sublance and a probe, which comprises the following steps of:
s1, mixing industrial raw materials of graphite powder, lime powder and an industrial mechanical lubricant according to a certain proportion to prepare a graphite organic coating;
s2, smearing the graphite organic coating prepared in the step S1 on the joint of the sublance and the probe to form a graphite organic coating as an effective protective layer;
and S3, after the sublance is used for a certain period, smearing the graphite organic coating again to form a graphite organic coating, and repeating the steps in a circulating way.
Furthermore, the adding proportion of the graphite powder, the lime powder and the industrial mechanical lubricant is 1-1.5kg to 0.3-0.7kg to 0.8-1.2L.
Further, the adding ratio of the graphite powder to the lime powder to the industrial mechanical lubrication is 1.5kg to 0.5kg to 1L.
Further, after the sublance is used for 12-16 times, the graphite organic coating is coated again to form the graphite organic coating.
Further, the smearing height of the graphite organic coating on the sublance body is 50-60 cm.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention utilizes common industrial raw materials of graphite powder, lime powder and industrial mechanical lubricant to prepare the graphite organic coating by adopting a certain proportion. The coating is coated on the joint of the sublance and the probe to form an effective protective layer, and the molten steel adhesion phenomenon can be obviously reduced. Meanwhile, when occasionally the cold steel is bonded, the bonded cold steel cannot be bonded with the sublance body, the treatment is simple and easy, and even the cold steel can fall off automatically under the action of gravity and mechanical vibration. The terminal measurement rate and the maintenance cost are effectively improved.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a photograph of the bonding cold steel at the connection of the sublance and the probe when the coating of the present application is applied;
FIG. 2 is a photograph showing a significant improvement in the situation after the use of the present invention.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings.
A method for preventing cold steel from being bonded at the joint of a sublance and a probe comprises the steps of pouring graphite powder, lime powder and an industrial lubricant into a proper container according to the proportion of 1.5kg to 0.5kg to 1L, and uniformly stirring to obtain the graphite organic coating. Before the sublance is used, paint consumed in manufacturing is dipped by a brush and is evenly coated on the joint of the sublance and the probe, wherein the coating height of a sublance body is 50-60 cm.
After coating, the sublance can normally run for 6-8 furnaces (each furnace is used for 2 times, TSC measurement is carried out once, and TSO measurement is carried out once), and after the sublance is used for 12-16 times, coating is carried out again. And so on.
The parameter models and manufacturer information of the graphite powder, the lime powder and the industrial lubricant in the embodiment are shown in the following table:
the invention is used on a 240t top-bottom combined blown converter and is matched with sublance equipment. The data are counted as the production data of a 3-seat 240t top-bottom combined blown converter of a steel plant. After the invention is adopted, the sublance measurement rate is obviously improved, and the production cost is effectively reduced. The results of the measurements of the sublance end point yield before and after the present invention were compared as shown in the following table.
TABLE 1 statistics of formation rates before the invention was used
TABLE 2 statistics of assay yield after using the present invention
After the method is adopted, the sublance end point measurement rate is improved from 88.1 percent on average to 93 percent on average and is improved by 5 percent.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (5)
1. A method for preventing cold steel from being bonded at the joint of a sublance and a probe is characterized by comprising the following steps:
s1, mixing industrial raw materials of graphite powder, lime powder and an industrial mechanical lubricant according to a certain proportion to prepare a graphite organic coating;
s2, smearing the graphite organic coating prepared in the step S1 on the joint of the sublance and the probe to form a graphite organic coating as an effective protective layer;
and S3, after the sublance is used for a certain period, smearing the graphite organic coating again to form a graphite organic coating, and repeating the steps in a circulating way.
2. The method for preventing cold steel from being bonded at the joint of the sublance and the probe as claimed in claim 1, wherein the adding ratio of the graphite powder, the lime powder and the industrial machinery lubricant is 1-1.5kg:0.3-0.7kg: 0.8-1.2L.
3. The method for preventing cold steel from being bonded at the joint of the sublance and the probe as claimed in claim 2, wherein the adding ratio of the graphite powder, the lime powder and the industrial machinery lubricant is 1.5kg:0.5kg: 1L.
4. The method for preventing cold steel from being bonded at the joint of the sublance and the probe as claimed in claim 1, wherein the graphite organic coating is formed by coating the graphite organic coating again after the sublance is used for 12-16 times.
5. The method for preventing cold steel from being bonded at the joint of the sublance and the probe as claimed in claim 1, wherein the coating height of the graphite organic coating on the sublance body is 50-60 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111663671.2A CN114350890A (en) | 2021-12-31 | 2021-12-31 | Method for preventing cold steel from being bonded at joint of sublance and probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111663671.2A CN114350890A (en) | 2021-12-31 | 2021-12-31 | Method for preventing cold steel from being bonded at joint of sublance and probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114350890A true CN114350890A (en) | 2022-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111663671.2A Pending CN114350890A (en) | 2021-12-31 | 2021-12-31 | Method for preventing cold steel from being bonded at joint of sublance and probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114350890A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390507A (en) * | 1989-09-01 | 1991-04-16 | Daishin Kako Kk | Metal adhesion preventing agent |
| JPH11293319A (en) * | 1998-04-14 | 1999-10-26 | Nippon Steel Corp | Manufacture of steel by converter free from adhesion of metal in furnace |
| CN1817973A (en) * | 2006-03-23 | 2006-08-16 | 武汉钢铁(集团)公司 | Coating against binding slags |
| CN203174137U (en) * | 2013-03-28 | 2013-09-04 | 鞍钢股份有限公司 | Sublance probe |
| CN109652609A (en) * | 2019-01-11 | 2019-04-19 | 包头钢铁（集团）有限责任公司 | A kind of inexpensive, high efficient protected sublance steel bonding method |
| CN211190682U (en) * | 2019-10-21 | 2020-08-07 | 天津天钢联合特钢有限公司 | Spraying device for converter oxygen lance anti-sticking fire-resistant coating |
-
2021
- 2021-12-31 CN CN202111663671.2A patent/CN114350890A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390507A (en) * | 1989-09-01 | 1991-04-16 | Daishin Kako Kk | Metal adhesion preventing agent |
| JPH11293319A (en) * | 1998-04-14 | 1999-10-26 | Nippon Steel Corp | Manufacture of steel by converter free from adhesion of metal in furnace |
| CN1817973A (en) * | 2006-03-23 | 2006-08-16 | 武汉钢铁(集团)公司 | Coating against binding slags |
| CN203174137U (en) * | 2013-03-28 | 2013-09-04 | 鞍钢股份有限公司 | Sublance probe |
| CN109652609A (en) * | 2019-01-11 | 2019-04-19 | 包头钢铁（集团）有限责任公司 | A kind of inexpensive, high efficient protected sublance steel bonding method |
| CN211190682U (en) * | 2019-10-21 | 2020-08-07 | 天津天钢联合特钢有限公司 | Spraying device for converter oxygen lance anti-sticking fire-resistant coating |
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| PB01 | Publication | ||
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Application publication date: 20220415 |