CN114260430B - Head treatment method for improving yield of high titanium steel electrode rod - Google Patents
Head treatment method for improving yield of high titanium steel electrode rod Download PDFInfo
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- CN114260430B CN114260430B CN202111656619.4A CN202111656619A CN114260430B CN 114260430 B CN114260430 B CN 114260430B CN 202111656619 A CN202111656619 A CN 202111656619A CN 114260430 B CN114260430 B CN 114260430B
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Abstract
A head treatment method for improving yield of a high titanium steel electrode rod comprises the following steps: adding mold flux into the mold to lubricate the mold wall before molding, and then injecting molten steel; after the steel liquid is solidified to generate a packet head hard block, the packet head hard block is pried off by a prizing device to obtain the steel ingot. According to the invention, the addition of rice hulls and a heat preservation agent is eliminated in the die casting process, according to the characteristic that the high-titanium steel is solidified to generate the head block, after waiting for a period of time, the solidified head block at the head opening of the steel ingot is pried by the crow bar, so that no covering slag and other foreign matters are mixed at the head opening of the steel ingot, 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 yield of a high titanium steel electrode rod.
Background
In the ferrous metallurgy process, the casting is divided into two parts of die casting and continuous casting, and the continuous casting has the advantages of greatly improving the yield of molten steel, being widely applied to the ferrous metallurgy industry, but the continuous casting can not meet the requirements due to the special ingot type specification of special steel types and the technical requirements of special smelting, so that the die casting plays a vital role, can meet the quality requirements and can realize the continuous expansion of the product specifications. The die casting pouring process flow is as follows: after the ladle is wrapped, an argon protection pouring device is installed, the ladle is moved into a pouring pit, a pouring gate is aligned, a sliding water gap is opened, sand is discharged, and pouring is started. In pouring, molten steel is contained in a steel ladle, the molten steel flows through a sliding nozzle, flows through a middle pouring pipe, enters a steel flow channel in a flat base, then directly flows to a tail brick of a soup channel, flows back in a buffer zone of the tail brick, directly enters a pouring ingot mould through a brick hole between the tail brick and a mould bottom, and gradually forms stable upward molten steel flow until the pouring of the whole steel ingot is finished. In the process flow, the common practice of the person skilled in the art is to add the mold flux into the mold to lubricate the mold wall and the molten steel, add the heat preservation agent after injection, and then cover the carbonized rice hulls, thereby ensuring the uniformity of the surface of the formed steel ingot.
However, due to the characteristic that the high titanium content steel ingot can generate serious shrinkage failure after cooling and solidification, the die casting method can cause the situation shown in figure 1 that deeper holes are formed at the end of the cylindrical ingot, and the covering slag, the heat insulating agent and the carbonized rice hulls can be involved into solidified molten steel to form inclusions because of serious shrinkage failure, so that the inclusions cannot be effectively removed in the secondary remelting electroslag process, only the electroslag can reach the solid non-shrinkage hole position, and the section of material with shrinkage holes cannot be effectively utilized, so that the problem of lower yield of electroslag remelting is caused.
There is currently no effective solution to the problems of the high titanium ingot in industrial die casting processes.
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 rod, which is used for eliminating the addition of rice hulls and a heat preservation agent, and according to the characteristics of a head hard block generated when a high titanium content steel grade is solidified, a crow bar is used for prying off the solidified head hard block at a cap opening after waiting for a period of time, so that no protective slag and other foreign matters are mixed at the head cap opening of the steel ingot, the purity of the material is improved, and the yield is greatly improved.
In order to achieve the above object, the technical scheme of the present invention is as follows:
a head treatment method for improving yield of a high titanium steel electrode rod comprises the following steps: adding mold flux into the mold to lubricate the mold wall before molding, and then injecting molten steel; after the steel liquid is solidified to generate a packet head hard block, the packet head hard block is pried off by a prizing device to obtain the steel ingot.
According to the invention, the addition of carbonized rice hulls and a heat preservation agent is canceled, and the cap opening residual solid protection slag is scraped after injection, so that the solidified cap opening is pried by a crow bar after injection for a period of time, so that the cap opening of the head is free of any protection slag and other foreign matters, and the normal smelting can be realized only by normal flat-head welding during electroslag remelting, the purity of the material is improved, the utilization rate is obviously improved, and the yield is greatly increased.
As a further preferred aspect of the present invention, the picking device includes a fixing frame, a supporting and adjusting structure disposed on the fixing frame and used for jacking up the steel ingot, and a crow bar disposed on the fixing frame and used for picking up the steel ingot.
As a further preferred aspect of the present invention, the support adjustment structure includes a fixing rod, a mounting hole provided at one end of the fixing rod and connected to the fixing frame, and a support block provided at the other end of the fixing rod, the support block being provided with a slope facing the steel ingot.
As a further preferred aspect of the present invention, the support adjustment structure further includes a slot provided on a side end of the support block remote from the inclined surface, an internal threaded hole provided on the slot, and a stud provided on the internal threaded hole for jacking up the support block.
As a further preferred aspect of the present invention, the support adjustment structure further includes a first fixing hole provided on a side end of the support block for inserting the crow bar.
As a further preferred aspect of the present invention, the picking device further includes a material placement structure disposed on the fixing frame and configured to receive the packet header hard block, and the material placement structure includes a fixing case disposed on the fixing frame, and a second fixing hole disposed on a side end of the fixing case and configured to insert the pry bar.
As a further preferred aspect of the present invention, the support adjustment structure further comprises a plurality of side slots disposed on the outer annulus 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.
As a further preferred aspect of the present invention, the pry bar rotates the stud by inserting the pry portion into the side groove.
In summary, the invention has the following beneficial effects:
according to the invention, the addition of rice hulls and a heat preservation agent is eliminated in the die casting process, according to the characteristic that the high-titanium steel is solidified to generate the head block, after waiting for a period of time, the solidified head block at the head opening of the steel ingot is pried by the crow bar, so that no covering slag and other foreign matters are mixed at the head opening of the steel ingot, 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 by the invention.
Fig. 3 is a schematic structural view of the prying device of the present invention.
Fig. 4 is a schematic view of the use state of the prying device.
Fig. 5 is a schematic diagram of a standby state of the prying device.
Fig. 6 is a schematic diagram 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 adjustment structure of the present invention.
Fig. 8 is a schematic view of another side perspective of the support adjustment structure of the present invention.
Fig. 9 is a schematic view of the position structure of the support block according to 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 ingot a, a packet head 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 plane 203a, a vertical plane 203b, a slot 204, an internal threaded hole 205, a stud 206, a first fixing hole 207, a side slot 208, a crow bar 3, a holding rod part 301, a picking 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 treatment method for improving yield of a high titanium steel electrode rod, which comprises the following steps: adding mold flux into the mold to lubricate the mold wall before molding, and then injecting molten steel; after the steel liquid is solidified to generate a packet head hard block, the packet head hard block is pried off by a prizing device to obtain the steel ingot.
The steel ingot obtained in this example is shown in fig. 2, and the surface treated by the head cap is flat and no shrinkage cavity occurs.
In this embodiment, as shown in fig. 3 to 10, the picking 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 crow bar 3 disposed on the fixing frame 1 and used for picking up the packet head hard block, and a material placing structure 4 disposed on the fixing frame 1 and used for receiving the packet head hard block.
In this embodiment, there are two support adjustment structures 2, each support adjustment structure 2 includes a fixing rod 201, a mounting hole 202 disposed on one end of the fixing rod 201 and connected to the fixing frame 1, and a support block 203 disposed on the other end of the fixing rod 201, and a slope 203a facing the steel ingot is disposed on the support block 203. The crow bar 3 includes a grip portion 301 and a prying 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 the fixing rods are locked after being determined, and the locking structure (not labeled in the figure) is an existing structure, and will not be described again. The two supporting blocks 203 are positioned at the lower ends of two sides of the cylindrical ingot a, and the inclined surfaces 203a are tangential to the surface of the cylindrical ingot a, and form an inclined upward acting force which is used for supporting the cylindrical ingot a and can also radially inwards force component the two side surfaces of the cylindrical ingot a so as to further clamp the cylindrical ingot a. After the cylindrical ingot a is fixed, the prying part 302 of the prying bar 3 is inserted into the gap of the packet header hard block b, then an operator holds the holding rod part 301 to apply force, prying down or partially prying down the packet header hard block b, and repeating for several times to completely remove the packet header hard block b. The fixing box 401 is fixed on the fixing frame 1 through a fixing block 403 and is located at the lower side of the cylindrical ingot a, and is used for receiving the pried packet head hard block b, and scraps, dust and the like generated in the prizing process.
In this embodiment, the support adjustment structure 2 further includes a slot 204 provided on a side end of the support block 203 remote from the inclined surface 203a, an internally threaded hole 205 provided on the slot 204, a stud 206 provided on the internally threaded hole 205 for jacking up the support block 203, and a plurality of side slots 208 provided on an outer circumferential surface of the stud 206.
In this embodiment, the stud 206 is disposed to function as: in the picking process, there is a situation that the position of the cylindrical ingot a may need to be finely adjusted along with the process, or the situation that the cylindrical ingot a is loosened due to excessive force application in the picking process, and when the two situations occur, the position of the fixing rod 201 is inconvenient to adjust, so that the support block 203 is reinforced by jacking the stud 206, and the reinforcing principle is that when the stud 206 is continuously screwed into the internally threaded hole 205 until the lower surface of the support block 203 is jacked, the stud 206 is continuously rotated, the vertical surface 203b of the support block 203 on one side of the stud 206 is jacked up first, and the included angle between the inclined surface 203a and the horizontal line is increased, so that a more inclined acting force is exerted on two sides of the cylindrical ingot a, and therefore, the radial inward component force of the cylindrical ingot a is increased, and the fastening effect on the cylindrical ingot a is improved. When the distance between the two inclined surfaces 203a is continuously reduced by the rotation, a situation may occur in which the cylindrical ingot a is lifted up, and in this case, the cylindrical ingot a is easily dropped and rolled, and should be avoided as much as possible. In addition, when the stud 206 is used for another purpose, an operator can hold the holding rod 301 and extend the picking part 302 into the slot 204 to hook the stud 206 when adjusting the position of the fixing rod 201, so that the supporting block 203 can be easily forced to move. In this embodiment, in order to avoid the effort of rotating the stud 206, the structure of the side slot 208 is designed, and the principle of use is: the operator holds the grip portion 301, inserts the prying portion 302 into the side groove 208 to clamp, and applies force along the rotation direction of the stud 206 to rotate the stud 206.
In this embodiment, the support adjustment structure 2 further includes a first fixing hole 207 provided on a side end of the support block 203 for inserting the crow bar 3. The material placing structure 4 comprises a second fixing hole 402 which is arranged on the side end of the fixing box 401 and is used for inserting the crow bar 3. Wherein, the fixing hole 402 has a larger opening for placing the picking portion 302. This design prevents the crowbar 3 from being lost.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The head treatment method for improving the yield of the high titanium steel electrode rod is characterized by comprising the following steps of: adding mold flux into the mold to lubricate the mold wall before molding, and then injecting molten steel; after the steel liquid is solidified to generate a packet head hard block, the packet head hard block is pried off by a prizing device to obtain a steel ingot; the prying device comprises a fixing frame (1), a supporting and adjusting structure (2) which is arranged on the fixing frame (1) and used for jacking up the steel ingot, and a pry bar (3) which is arranged on the fixing frame (1) and used for prying off the steel ingot.
2. The head treatment method for improving the yield of the high titanium steel electrode rod according to claim 1, wherein the supporting and adjusting structure (2) comprises a fixed rod (201), a mounting hole (202) arranged on one end of the fixed rod (201) and connected with the fixed frame (1), and a supporting block (203) arranged on the other end of the fixed rod (201), and an inclined surface (203 a) facing the steel ingot is arranged on the supporting block (203).
3. The head treatment method for improving the yield of the high titanium steel electrode rod according to claim 2, wherein the support adjusting structure (2) further comprises a groove (204) arranged on the side end of the support block (203) far away from the inclined surface (203 a), an internal threaded hole (205) arranged on the groove (204), and a stud (206) arranged on the internal threaded hole (205) and used for jacking up the support block (203).
4. The head treatment method for improving the yield of the high titanium steel electrode rod according to claim 2, wherein the supporting and adjusting structure (2) further comprises a first fixing hole (207) which is arranged on the side end of the supporting block (203) and is used for inserting the pry bar (3).
5. The head treatment method for improving yield of high titanium steel electrode bars according to claim 4, wherein the prying device further comprises a material placing structure (4) which is arranged on the fixing frame (1) and is used for receiving the steel toe 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 is used for inserting the prying bar (3).
6. A head treatment method for improving the yield of high titanium steel electrode rods according to claim 3, characterized in that the support adjustment structure (2) further comprises a plurality of lateral grooves (208) provided on the outer annular surface of the stud (206).
7. The head treatment method for improving yield of high titanium steel electrode bars according to claim 6, wherein the pry bar (3) comprises a grip portion (301) and a prying portion (302) connected with the grip portion (301).
8. The head treatment method for improving the yield of the high titanium steel electrode rod according to claim 7, wherein 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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| 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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| CN114260430B true CN114260430B (en) | 2023-06-23 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177303A (en) * | 1991-12-28 | 1993-07-20 | Daido Steel Co Ltd | Method for casting steel ingot |
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| 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 |
| CN102886501B (en) * | 2012-10-09 | 2014-07-02 | 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 |
| CN103212674B (en) * | 2013-03-16 | 2015-09-09 | 南阳汉冶特钢有限公司 | A kind of steel plate ingot casting device and the method with this device production super-thick steel plate ingot casting |
| CN103252461B (en) * | 2013-05-13 | 2015-12-23 | 山西太钢不锈钢股份有限公司 | A kind of pouring procedure of electrode billet |
| CN113322386B (en) * | 2021-04-19 | 2022-08-02 | 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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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177303A (en) * | 1991-12-28 | 1993-07-20 | Daido Steel Co Ltd | Method for casting steel ingot |
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Effective date of registration: 20230524 Address after: Building 46, No. 618, Tianshuiqiao Road, Huzhou City, Zhejiang Province, 313000 Applicant after: Huzhou Yongxing Special Stainless Steel Co.,Ltd. Address before: 313000 No. 618, luoshuiqiao Road, Yangjiabu, Huzhou Economic and Technological Development Zone, Huzhou City, Zhejiang Province Applicant before: Yongxing special material technology Co.,Ltd. |
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