CN114260430A - Head treatment method for improving yield of high-titanium steel electrode bar - Google Patents
Head treatment method for improving yield of high-titanium steel electrode bar Download PDFInfo
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- CN114260430A CN114260430A CN202111656619.4A CN202111656619A CN114260430A CN 114260430 A CN114260430 A CN 114260430A CN 202111656619 A CN202111656619 A CN 202111656619A CN 114260430 A CN114260430 A CN 114260430A
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Abstract
A head processing method for improving yield of a high titanium steel electrode bar comprises the following steps: before die casting, adding mold powder into the die to lubricate the die wall, and then injecting molten steel; and after the molten steel is solidified to generate a ladle head hard block, prying the ladle head hard block by using a prying device to obtain a steel ingot. The die casting process adopted by the invention cancels the addition of rice hulls and a heat preservation agent, and according to the characteristic that the high-titanium-content steel grade generates the head covering hard block during solidification, after waiting for a period of time, a prying bar is used for prying off the solidified head covering hard block of the cap opening, so that the head cap opening of the steel ingot is free from any protective slag and other foreign matter impurities, the purity of the material is improved, and the yield is greatly increased.
Description
Technical Field
The invention belongs to the technical field of metal material preparation, and particularly relates to a head treatment method for improving the yield of a high-titanium steel electrode bar.
Background
In the ferrous metallurgy process, two important links of steel making and pouring are mainly included, wherein the pouring is divided into a die casting part and a continuous casting part, the continuous casting improves the yield of molten steel to a great extent, so the method is widely applied to the ferrous metallurgy industry, but the continuous casting can not meet the requirement due to the special ingot type specification of special steel and the special smelting process requirement, so the die casting plays a vital role, the quality requirement can be met, and the continuous expansion of the product specification can be realized. The die casting pouring process flow comprises the following steps: and (4) after the ladle is placed in a ladle, installing an argon protection pouring device, moving the device into a pouring pit, aligning a pouring gate, opening a sliding water gap, putting sand, and starting pouring. During pouring, molten steel is contained in a ladle, molten steel flows through a sliding nozzle, a middle pouring pipe and a steel flowing channel in a flat plate base, then directly flows to a runner tail brick, forms backflow in a buffer area of the tail brick, directly enters a steel ingot die through a brick hole between the tail brick and the die bottom, and gradually forms a stable upward molten steel flow until the pouring of the whole steel ingot is finished. In the process flow, the general method of the technical personnel in the field is that the mold powder is firstly added into the mold to lubricate the mold wall and the molten steel, the heat preservation agent is firstly added after the injection, and then the carbonized rice hulls are covered on the mold wall, thereby ensuring the uniformity of the surface of the formed steel ingot.
However, due to the characteristic that severe shrinkage defects are generated after the high-titanium-content steel ingot is cooled and solidified, the die casting method can cause the situation as shown in figure 1, deep holes are formed at the end part of the cylindrical ingot, and the covering slag, the heat preservation agent and the carbonized rice husk are involved in the solidified molten steel to form inclusions due to the severe shrinkage defects, so that the inclusions cannot be effectively removed in the secondary remelting electroslag process, only the electroslag reaches the solid non-shrinkage-hole part, and the material with the shrinkage holes cannot be effectively utilized, thereby causing the problem of low electroslag remelting yield.
At present, no effective solution is provided for the problems of the high titanium content ingots in the industrial die casting process.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a head treatment method for improving the yield of a high titanium steel electrode bar, which cancels the addition of rice hulls and a heat preservation agent, and can ensure that the solidified toe cap hard block of a cap opening is pried off by a prying bar after waiting for a period of time according to the characteristic that the high titanium steel electrode bar generates the toe cap hard block during solidification, so that the head cap opening of a steel ingot is free from any protective slag and other foreign matter, the purity of the material is improved, and the yield is greatly improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a head processing method for improving yield of a high titanium steel electrode bar comprises the following steps: before die casting, adding mold powder into the die to lubricate the die wall, and then injecting molten steel; and after the molten steel is solidified to generate a ladle head hard block, prying the ladle head hard block by using a prying device to obtain a steel ingot.
In the invention, the addition of carbonized rice hulls and a heat insulating agent is cancelled, solid protective slag remained on the cap opening is scraped after the injection is finished, and the steel has a phenomenon of hardening the cap opening in the solidification process, so that after the injection is finished and is waited for a period of time, a prying rod is used for prying off the solidified cap opening hard block of the cap opening, so that the head cap opening is free from any protective slag and other foreign matter impurities, normal flat-head welding is only needed for normal smelting during electroslag remelting, the purity of the material is improved, no impurities exist, the utilization rate is obviously improved, and the yield is greatly improved.
As a further preferable mode of the present invention, the prying device includes a fixed frame, a support adjusting structure provided on the fixed frame and used for jacking up the steel ingot, and a prying bar provided on the fixed frame and used for prying off the toe cap hard block.
As a further preferable aspect of the present invention, the support adjusting structure includes a fixing rod, a mounting hole provided at one end of the fixing rod and connected to the fixing frame, and a supporting block provided at the other end of the fixing rod, and the supporting block is provided with an inclined surface facing the steel ingot.
As a further preferable aspect of the present invention, the support adjusting structure further includes a slot provided at a side end of the support block away from the inclined surface, an internal threaded hole provided at the slot, and a stud provided at the internal threaded hole and used for jacking up the support block.
As a further preferred of the present invention, the support adjusting structure further includes a first fixing hole provided on a side end of the support block and for inserting the pry bar.
As a further preferable mode of the present invention, the prying device further includes a material placing structure disposed on the fixing frame and configured to receive the toe cap hard block, and the material placing structure includes a fixing box disposed on the fixing frame and a second fixing hole disposed on a side end of the fixing box and configured to be inserted into the pry bar.
As a further preferred feature of the present invention, the support adjustment structure further includes a plurality of side grooves provided on an outer circumferential surface of the stud.
As a further preferred aspect of the present invention, the pry bar includes a grip portion and a pry portion connected to the grip portion.
In a further preferred embodiment of the present invention, the pry bar rotates the stud by inserting the pry portion into the side groove.
In conclusion, the invention has the following beneficial effects:
the die casting process adopted by the invention cancels the addition of rice hulls and a heat preservation agent, and according to the characteristic that the high-titanium-content steel grade generates the head covering hard block during solidification, after waiting for a period of time, a prying bar is used for prying off the solidified head covering hard block of the cap opening, so that the head cap opening of the steel ingot is free from any protective slag and other foreign matter impurities, the purity of the material is improved, and the yield is greatly increased.
Drawings
FIG. 1 is a cylindrical ingot prepared by the prior art.
FIG. 2 is a cylindrical ingot prepared according to the present invention.
Fig. 3 is a schematic structural view of the prying device of the present invention.
Fig. 4 is a schematic view of the state of use of the prying device of the present invention.
Fig. 5 is a schematic diagram of a standby state of the prying device of the present invention.
FIG. 6 is a schematic view of the position structure of the supporting and adjusting structure and the material placing structure of the present invention.
Fig. 7 is a schematic perspective view of the support adjusting structure of the present invention.
Fig. 8 is a schematic perspective view of another side of the support adjusting structure of the present invention.
FIG. 9 is a schematic view of the position structure of the supporting block of the present invention.
FIG. 10 is a schematic structural view of a stud according to the present invention.
Description of the drawings: the device comprises a cylindrical spindle a, a toe cap hard block b, a fixing frame 1, a supporting and adjusting structure 2, a fixing rod 201, a mounting hole 202, a supporting block 203, an inclined surface 203a, a vertical surface 203b, a groove 204, an internal thread hole 205, a stud 206, a first fixing hole 207, a side groove 208, a pry bar 3, a holding rod part 301, a prying part 302, a material placing structure 4, a fixing box 401, a second fixing hole 402 and a fixing block 403.
Detailed Description
Example 1
The embodiment provides a head processing method for improving yield of a high titanium steel electrode bar, which comprises the following steps: before die casting, adding mold powder into the die to lubricate the die wall, and then injecting molten steel; and after the molten steel is solidified to generate a ladle head hard block, prying the ladle head hard block by using a prying device to obtain a steel ingot.
The steel ingot obtained in this example is shown in fig. 2, and the surface treated by the head cap was flat and no shrinkage cavity occurred.
In this embodiment, as shown in fig. 3 to 10, the prying device includes a fixing frame 1, a supporting and adjusting structure 2 disposed on the fixing frame 1 and used for jacking up the steel ingot, a pry bar 3 disposed on the fixing frame 1 and used for prying off the toe cap hard block, and a material placing structure 4 disposed on the fixing frame 1 and used for receiving the toe cap hard block.
In this embodiment, there are two support adjusting structures 2, each support adjusting structure 2 includes a fixing rod 201, a mounting hole 202 disposed at one end of the fixing rod 201 and connected to the fixing frame 1, and a supporting block 203 disposed at the other end of the fixing rod 201, and an inclined surface 203a facing the steel ingot is disposed on the supporting block 203. The pry bar 3 includes a grip portion 301, and a pry portion 302 connected to the grip portion 301. The material placing structure 4 comprises a fixed box 401 arranged on the fixed frame 1.
In this embodiment, the positions of the two fixing rods 201 on the fixing frame 1 are adjusted according to the diameter of the obtained steel ingot (cylindrical ingot a), and locking is performed after the determination, and a locking structure (not identified in the figure) is an existing structure and is not described again. The two supporting blocks 203 are positioned at the lower ends of the two sides of the cylindrical ingot a, the inclined surfaces 203a are tangent to the surface of the cylindrical ingot a, and an oblique upward acting force is formed, and the acting force is used for supporting the cylindrical ingot a, and forming a radial inward component force on the two side surfaces of the cylindrical ingot a to further clamp the cylindrical ingot a. After the cylindrical spindle a is fixed, the prying part 302 of the prying bar 3 is inserted into the gap of the ferrule hard block b, then an operator holds the holding rod part 301 with a hand to apply force to pry down or partially pry down the ferrule hard block b, and the operation is repeated for several times to completely remove the ferrule hard block b. The fixed box 401 is fixed on the fixed frame 1 through a fixed block 403 and is located on the lower side of the cylindrical spindle a, and is used for receiving the packet head hard block b which is pried down and picking up chips, dust and the like generated in the process.
In this embodiment, the support adjustment structure 2 further includes a slot 204 provided on a side end of the support block 203 away from the inclined surface 203a, an internal threaded hole 205 provided on the slot 204, a stud 206 provided on the internal threaded hole 205 for jacking up the support block 203, and a plurality of side grooves 208 provided on an outer circumferential surface of the stud 206.
In this embodiment, the stud 206 is configured to: in the prying process, position fine adjustment of the cylindrical spindle a may be required along with the process, or the cylindrical spindle a is loosened due to excessive force application in the prying process, and the position of the fixing rod 201 is inconvenient to adjust when the two conditions occur, so that the supporting block 203 is jacked up by the stud 206 for reinforcement, the reinforcement principle is that after the stud 206 is continuously screwed into the internal thread hole 205 until the lower surface of the supporting block 203 is jacked up, the stud 206 continues to rotate, the vertical surface 203b of the supporting block 203 on one side of the stud 206 is jacked up first, and the inclined surface 203a increases the included angle with the horizontal line, so that a more inclined acting force is exerted on two sides of the cylindrical spindle a, the radially inward component force of the cylindrical spindle a is increased, and the fastening effect of the cylindrical spindle a is improved. When the distance between the two inclined surfaces 203a is continuously reduced due to rotation, the cylindrical ingot a may be jacked up, and in this case, the cylindrical ingot a is easy to fall off and roll, and the occurrence should be avoided as much as possible. In addition, when the position of the fixing rod 201 is adjusted, an operator can hold the holding rod portion 301 and extend the prying portion 302 into the slot 204 to hook the stud 206 when the stud 206 is used as another function, so that the support block 203 can be driven to move by applying force easily. In the present embodiment, in order to avoid the effort of rotating the stud 206, the structure of the side groove 208 is designed, and the use principle is as follows: an operator holds the grip lever portion 301, inserts the pry portion 302 into the side groove 208 to be clamped, and applies force in the rotation direction of the stud 206 to drive the stud 206 to rotate.
In this embodiment, the support adjusting structure 2 further includes a first fixing hole 207 provided on a side end of the support block 203 and for inserting the pry bar 3. The material placing structure 4 includes a second fixing hole 402 provided on a side end of the fixing box 401 and for inserting the pry bar 3. The fixing hole 402 has a larger opening for receiving the prying portion 302. This design prevents the crowbar 3 from being lost.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. A head processing method for improving the yield of a high titanium steel electrode bar is characterized by comprising the following steps: before die casting, adding mold powder into the die to lubricate the die wall, and then injecting molten steel; and after the molten steel is solidified to generate a ladle head hard block, prying the ladle head hard block by using a prying device to obtain a steel ingot.
2. The head treatment method for improving the yield of the high titanium steel electrode bar according to claim 1, wherein the prying device comprises a fixed frame (1), a support adjusting structure (2) arranged on the fixed frame (1) and used for jacking the steel ingot, and a prying bar (3) arranged on the fixed frame (1) and used for prying off the Baotou hard block.
3. The head treatment method for improving the yield of a high titanium steel electrode bar according to claim 2, wherein the support adjusting structure (2) comprises a fixing rod (201), a mounting hole (202) arranged at one end of the fixing rod (201) and connected with the fixing frame (1), and a supporting block (203) arranged at the other end of the fixing rod (201), and an inclined surface (203 a) facing towards the steel ingot is arranged on the supporting block (203).
4. The high titanium steel electrode bar yield increasing head treatment method according to claim 3, wherein the support adjusting structure (2) further comprises a slot (204) provided on the side end of the support block (203) away from the inclined surface (203 a), an internally threaded hole (205) provided on the slot (204), and a stud (206) provided on the internally threaded hole (205) for jacking up the support block (203).
5. A high titanium steel electrode bar yield increasing head treatment method according to claim 3, characterized in that the support adjusting structure (2) further comprises a first fixing hole (207) provided on the support block (203) side end for inserting the crowbar (3).
6. The head treatment method for improving the yield of the high titanium steel electrode bar according to claim 5, wherein the prying device further comprises a material placing structure (4) which is arranged on the fixing frame (1) and used for receiving the ferrule hard block, and the material placing structure (4) comprises a fixing box (401) which is arranged on the fixing frame (1) and a second fixing hole (402) which is arranged on the side end of the fixing box (401) and used for inserting the pry bar (3).
7. The high titanium steel electrode bar yield enhancement head treatment method as claimed in claim 4, wherein the support adjustment structure (2) further comprises a plurality of side grooves (208) provided on the outer circumferential surface of the stud (206).
8. The head treatment method for improving the yield of the high titanium steel electrode bar according to claim 7, wherein the crowbar (3) comprises a holding rod part (301) and a prying part (302) connected with the holding rod part (301).
9. The high titanium steel electrode bar yield enhancement head treatment method according to claim 7, characterized in that the pry bar (3) rotates the stud (206) by inserting the pry portion (302) into the side groove (208).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656619.4A CN114260430B (en) | 2021-12-31 | 2021-12-31 | Head treatment method for improving yield of high titanium steel electrode rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111656619.4A CN114260430B (en) | 2021-12-31 | 2021-12-31 | Head treatment method for improving yield of high titanium steel electrode rod |
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| CN114260430A true CN114260430A (en) | 2022-04-01 |
| CN114260430B CN114260430B (en) | 2023-06-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5510313A (en) * | 1978-07-07 | 1980-01-24 | Daido Steel Co Ltd | Cross gate cutting method in bottom pouring ingot making method |
| JPH05177303A (en) * | 1991-12-28 | 1993-07-20 | Daido Steel Co Ltd | Method for casting steel ingot |
| CN102886501A (en) * | 2012-10-09 | 2013-01-23 | 中国科学院金属研究所 | Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof |
| CN103212674A (en) * | 2013-03-16 | 2013-07-24 | 南阳汉冶特钢有限公司 | Steel plate ingot casting device and method for producing ultra-thick steel plate cast ingot with same |
| CN103252461A (en) * | 2013-05-13 | 2013-08-21 | 山西太钢不锈钢股份有限公司 | Method for pouring electrode billet |
| CN113322386A (en) * | 2021-04-19 | 2021-08-31 | 西部超导材料科技股份有限公司 | Preparation method of large-size NbTi alloy ingot |
| CN113737009A (en) * | 2021-08-20 | 2021-12-03 | 鞍钢铸钢有限公司 | Preparation method of flat electrode blank |
-
2021
- 2021-12-31 CN CN202111656619.4A patent/CN114260430B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5510313A (en) * | 1978-07-07 | 1980-01-24 | Daido Steel Co Ltd | Cross gate cutting method in bottom pouring ingot making method |
| JPH05177303A (en) * | 1991-12-28 | 1993-07-20 | Daido Steel Co Ltd | Method for casting steel ingot |
| CN102886501A (en) * | 2012-10-09 | 2013-01-23 | 中国科学院金属研究所 | Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof |
| CN103212674A (en) * | 2013-03-16 | 2013-07-24 | 南阳汉冶特钢有限公司 | Steel plate ingot casting device and method for producing ultra-thick steel plate cast ingot with same |
| CN103252461A (en) * | 2013-05-13 | 2013-08-21 | 山西太钢不锈钢股份有限公司 | Method for pouring electrode billet |
| CN113322386A (en) * | 2021-04-19 | 2021-08-31 | 西部超导材料科技股份有限公司 | Preparation method of large-size NbTi alloy ingot |
| CN113737009A (en) * | 2021-08-20 | 2021-12-03 | 鞍钢铸钢有限公司 | Preparation method of flat electrode blank |
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| CN114260430B (en) | 2023-06-23 |
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