CN102806426A - Welding process of auxiliary electrode for vacuum arc remelting furnace - Google Patents
Welding process of auxiliary electrode for vacuum arc remelting furnace Download PDFInfo
- Publication number
- CN102806426A CN102806426A CN2012102769813A CN201210276981A CN102806426A CN 102806426 A CN102806426 A CN 102806426A CN 2012102769813 A CN2012102769813 A CN 2012102769813A CN 201210276981 A CN201210276981 A CN 201210276981A CN 102806426 A CN102806426 A CN 102806426A
- Authority
- CN
- China
- Prior art keywords
- electrode
- auxiliary electrode
- main electrode
- auxiliary
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Discharge Heating (AREA)
Abstract
The invention relates to a welding process of an auxiliary electrode for a vacuum arc remelting furnace, which comprises the following steps: assembling a main electrode and the auxiliary electrode into the furnace; sealing the furnace and vacuumizing; powering on and arcing, wherein the arcing current is 10-15% of normal smelting current; gradually improving the smelting current to be 25-35% of the normal smelting current; after the area of a smelting pool formed by a plane where the upper end surface of the main electrode is positioned is larger than the lower end area of the auxiliary electrode, powering off; and descending the auxiliary electrode to be inserted in the smelting pool of the plane where the upper end surface of the main electrode is positioned, and enabling the lower end surface of the auxiliary electrode to be tightly contacted with the upper end surface of the main electrode, so that the auxiliary electrode and the main electrode are connected together, wherein the normal smelting current is the rated smelting current of the main electrode. According to the welding process, the connection strength of the auxiliary electrode and the main electrode can be effectively improved, and the auxiliary electrode can be descended more stably, so that the auxiliary electrode can better align to the main electrode, and cold protrusions can be reduced, and the welding quality can be greatly improved.
Description
Technical field
The present invention relates to vacuum consumable electrode arc furnace melting field, more particularly, relate to a kind of auxiliary electrode welding procedure of new vacuum consumable electrode arc furnace.
Background technology
In the fusion process of vacuum consumable electrode arc furnace (VAR); Old auxiliary electrode welding manner exists problems; Can not satisfy the needs of control of product quality and safety in production, as: bonding area causes rupturing from the auxiliary electrode weld in the main electrode fusion process inadequately, 65% of the not enough auxiliary electrode end face of original bonding area; Auxiliary electrode and main electrode junction insufficient strength, often occur welding quality not good and reweld or fusion process in along the situation of auxiliary electrode weld cracking; The welding position does not align and causes can't taking off ingot smoothly after the melting; Charged decline electrode pull bar; Can not in time make a response, and the auxiliary electrode impulsive force is bigger, when the lower end of auxiliary electrode touches the upper surface of main electrode according to situation in the stove; Cause impulse force excessive and cause the liquid splash in the molten bath to produce a large amount of cold knurls to the sidewall of crucible; And the auxiliary electrode impulse force is excessive also can the main electrode that original centering is good miscue, and causes weldering partially, has a strong impact on product quality and production efficiency.
Therefore, the auxiliary electrode welding procedure of the good vacuum consumable electrode arc furnace of a kind of welding quality need be provided.
Summary of the invention
To the deficiency that exists in the prior art, one of the object of the invention is to solve the one or more problems that exist in the above-mentioned prior art.
The object of the present invention is to provide a kind of auxiliary electrode welding procedure that can effectively improve auxiliary electrode and main electrode bonding strength and reduce the vacuum consumable electrode arc furnace of cold knurl, raising welding quality.
To achieve these goals, the invention provides a kind of auxiliary electrode welding procedure of vacuum consumable electrode arc furnace, said welding procedure comprises the steps: main electrode and auxiliary electrode shove charge; Banking also vacuumizes; Send the electric starting the arc, making striking current is the 10-15% of normal smelting electric current; Progressively promote the 25-35% of melting electric current to normal smelting electric current; After treating the lower surface area of molten bath area greater than auxiliary electrode of place, main electrode upper surface place, plane formation, outage; The decline auxiliary electrode is with in the molten bath of inserting place, plane, place, main electrode upper surface; And the lower surface of auxiliary electrode is closely contacted with the upper surface of main electrode; Auxiliary electrode and main electrode are linked together, and wherein, said normal smelting electric current is the specified melting electric current of main electrode.
According to an embodiment of the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention, when said welding procedure also is included in main electrode and auxiliary electrode shove charge, guarantee main electrode and the good step of auxiliary electrode centering.
According to an embodiment of the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention, said welding procedure also comprised auxiliary electrode and main electrode cooling together to be connected after 20-40 minute, the step of broken NULLCHECK welding quality.
According to an embodiment of the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention, in 10-20 minute, the melting current step is promoted to the 25-35% of normal smelting electric current.
According to an embodiment of the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention, when treating molten bath area that place, plane, place, main electrode upper surface forms, kept 2-6 minute greater than the lower surface area of auxiliary electrode.
According to an embodiment of the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention, manually descend auxiliary electrode and insert in the molten bath at place, plane, place, main electrode upper surface after, kept 1-3 minute.
The present invention compared with prior art, efficient weld area reaches the 80-85% of auxiliary electrode end face, and the bonding strength of auxiliary electrode and main electrode is effectively improved; And the back decline electrode pull bar that manually cuts off the power supply; Can be according to the actual conditions flexible speed and the position of control electrode pull bar freely; Effectively reduced the problem that occurs in the welding process, and made the decline of auxiliary electrode more steady, guaranteed that effectively the centering of auxiliary electrode and main electrode is good; Reduce cold knurl, thereby improved welding quality greatly.
Description of drawings
Through below in conjunction with the description carried out of accompanying drawing that an example exemplarily is shown, of the present invention above-mentionedly will become apparent with other purposes and characteristics, wherein:
Fig. 1 is each position component sketch map in the vacuum consumable electrode arc furnace among the present invention.
Description of reference numerals:
1-electrode pull bar, 2-auxiliary electrode, 3-body of heater, 4-main electrode, 5-crucible.
The specific embodiment
Hereinafter, will combine accompanying drawing that exemplary embodiment of the present invention is described in further detail.
The auxiliary electrode welding procedure of vacuum consumable electrode arc furnace specifically comprises the steps: according to an exemplary embodiment of the present invention
1) with main electrode 4 and auxiliary electrode 2 shove charge.Fig. 1 is each position component sketch map in the vacuum consumable electrode arc furnace among the present invention; As shown in Figure 1; Before the smelting; Main electrode 4 and auxiliary electrode 2 are packed in the body of heater 3 of vacuum consumable electrode arc furnace, and auxiliary electrode 2 is installed in the lower end of electrode pull bar 1, the top that main electrode 4 is arranged on crucible 5 gets final product.Preferably, in order to guarantee welding quality, when the welding procedure of present embodiment also is included in main electrode 4 and auxiliary electrode 2 shove charges, guarantee that main electrode 4 and auxiliary electrode 2 centerings are good.
2) banking and vacuumizing.
3) send the electric starting the arc, making striking current is the 10-15% of normal smelting electric current.Wherein, the normal smelting electric current is the specified melting electric current of main electrode, and when striking current was in this scope, welding effect was best.
4) progressively promote the 25-35% of melting electric current to normal smelting electric current.According to the actual production process experience, when striking current be lower than the normal smelting electric current 25% the time molten bath too small, metallic solution is not enough to main electrode is connected with auxiliary electrode closely; And when striking current be higher than the normal smelting electric current 35% the time, metallic solution in the molten bath can be too much, causes molten metal to overflow the molten bath easily or splash everywhere.
5) behind the lower surface area of molten bath area of treating to locate to form in plane, place, main electrode 4 upper surfaces greater than auxiliary electrode 2, outage.Owing to the lower surface area of the molten bath area that place, plane, place, main electrode 4 upper surfaces is formed greater than auxiliary electrode 2, then can effectively improve bonding area, improve the bonding strength of auxiliary electrode 2 and main electrode 4.
6) last, decline auxiliary electrode 2 also inserts in the molten bath at place, plane, place, main electrode 4 upper surfaces, and the lower surface of auxiliary electrode 2 is closely contacted with the upper surface of main electrode 4, and auxiliary electrode 2 and main electrode 4 are linked together, and accomplishes welding process.Because manually outage back decline electrode pull bar 1, then the operator can be according to the actual conditions speed and the position of control electrode pull bar 1 freely flexibly, thereby has effectively reduced the problem that occurs in the welding process.
In one exemplary embodiment of the present invention, after said welding method comprised that also auxiliary electrode 2 together to be connected and main electrode 4 are cooled off 20-40 minute, broken NULLCHECK welding quality was carried out banking afterwards again and is smelted.
In one exemplary embodiment of the present invention, in 10-20 minute, the melting current step is promoted to the 25-35% of normal smelting electric current, to improve welding efficiency.
In one exemplary embodiment of the present invention, when treating molten bath area that place, plane, main electrode 4 upper surfaces places forms, kept 2-6 minute greater than the lower surface area of auxiliary electrode 2.Can guarantee the stable of molten bath area like this, guarantee welding effect.
In one exemplary embodiment of the present invention, manually descend auxiliary electrode 2 and insert in the molten bath at place, plane, main electrode 4 upper surfaces places after, kept 1-3 minute.This is in order to guarantee the time of contact of auxiliary electrode 2 and main electrode 4, to guarantee effective welding.
In order to understand the present invention better, to be described in detail below in conjunction with concrete example.
Example 1:
Diameter is the main electrode of 920mm, and specified melting electric current is 35000A; The auxiliary electrode diameter is 700mm.With main electrode and auxiliary electrode shove charge, guarantee that auxiliary electrode and main electrode centering are good.Banking also is evacuated to 3.23pa, send the electric starting the arc, and striking current is 4000A.In the starting the arc 20 minutes, make the melting current step rise to 8940A, behind the lower surface area of molten bath area of treating to locate to form in plane, place, main electrode upper surface, kept 4 minutes, manually outage greater than auxiliary electrode.Manual adjustments electrode pull bar inserts in the molten bath at place, plane, place, main electrode upper surface auxiliary electrode decline and welds, and keeps being pressed into state 2 minutes, and auxiliary electrode and main electrode are linked together.Cool off after 22 minutes, broken NULLCHECK, weld seam is good, and banking is waited to refine.
Example 2:
Diameter is the main electrode of 820mm, and specified melting electric current is 25000A; The auxiliary electrode diameter is 600mm.With main electrode and auxiliary electrode shove charge, guarantee that auxiliary electrode and main electrode centering are good.Banking also is evacuated to 4.71pa, send the electric starting the arc, and striking current is 3839A.In the starting the arc 19 minutes, make the melting current step rise to 7000A.After treating the lower surface area of molten bath area greater than auxiliary electrode of place, main electrode upper surface place, plane formation, kept 5 minutes, manually outage.Manual adjustments electrode pull bar inserts in the molten bath at place, plane, place, main electrode upper surface auxiliary electrode decline and welds, and keeps being pressed into state 3 minutes, and auxiliary electrode and main electrode are linked together.Cool off after 20 minutes, broken NULLCHECK, weld seam is good, and banking is waited to refine.
Example 3:
Diameter is the main electrode of 570mm, and specified melting electric current is 21000A; The auxiliary electrode diameter is 350mm.With main electrode and auxiliary electrode shove charge, guarantee that auxiliary electrode and main electrode centering are good.Banking also is evacuated to 4.15pa, send the electric starting the arc, and striking current is 3000A.In the starting the arc 20 minutes, make the melting current step rise to 7000A.After treating the lower surface area of molten bath area greater than auxiliary electrode of place, main electrode upper surface place, plane formation, kept 4 minutes, manually outage.Manual adjustments electrode pull bar inserts in the molten bath at place, plane, place, main electrode upper surface auxiliary electrode decline and welds, and keeps being pressed into state 2 minutes, and auxiliary electrode and main electrode are linked together.Cool off after 21 minutes, broken NULLCHECK, weld seam is good, and banking is waited to refine.
In sum, the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention makes efficient weld area reach the 80-85% of auxiliary electrode end face through the welding manner of adjustment auxiliary electrode, and the bonding strength of auxiliary electrode and main electrode is effectively improved; And the back decline electrode pull bar that manually cuts off the power supply; Can be according to the actual conditions flexible speed and the position of control electrode pull bar freely; Effectively reduced the problem that occurs in the welding process, and made the decline of auxiliary electrode more steady, guaranteed that effectively the centering of auxiliary electrode and main electrode is good; Reduce cold knurl, thereby improved welding quality greatly.
Although combined exemplary embodiment above the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace of the present invention has been described; But those of ordinary skills should be clear; Under the situation of spirit that does not break away from claim and scope, can carry out various modifications to the foregoing description.
Claims (6)
1. the auxiliary electrode welding procedure of a vacuum consumable electrode arc furnace is characterized in that, said welding procedure comprises the steps:
With main electrode and auxiliary electrode shove charge;
Banking also vacuumizes;
Send the electric starting the arc, making striking current is the 10-15% of normal smelting electric current;
Progressively promote the 25-35% of melting electric current to normal smelting electric current;
After treating the lower surface area of molten bath area greater than auxiliary electrode of place, main electrode upper surface place, plane formation, outage;
The decline auxiliary electrode belongs in the molten bath at place, plane to insert the main electrode upper surface, and the lower surface of auxiliary electrode is closely contacted with the upper surface of main electrode, and auxiliary electrode and main electrode are linked together,
Wherein, said normal smelting electric current is the specified melting electric current of main electrode.
2. the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace according to claim 1 is characterized in that, when said welding procedure also is included in main electrode and auxiliary electrode shove charge, guarantees main electrode and the good step of auxiliary electrode centering.
3. the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace according to claim 1 is characterized in that, said welding procedure also comprised auxiliary electrode and main electrode cooling together to be connected after 20-40 minute, the step of broken NULLCHECK welding quality.
4. the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace according to claim 1 is characterized in that, in 10-20 minute, the melting current step is promoted to the 25-35% of normal smelting electric current.
5. the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace according to claim 1 is characterized in that, when treating molten bath area that place, plane, main electrode upper surface place forms greater than the lower surface area of auxiliary electrode, keeps 2-6 minute.
6. the auxiliary electrode welding procedure of vacuum consumable electrode arc furnace according to claim 1 is characterized in that, the decline auxiliary electrode and insert in the molten bath at place, plane, main electrode upper surface place after, kept 1-3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276981.3A CN102806426B (en) | 2012-08-06 | 2012-08-06 | Welding process of auxiliary electrode for vacuum arc remelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276981.3A CN102806426B (en) | 2012-08-06 | 2012-08-06 | Welding process of auxiliary electrode for vacuum arc remelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102806426A true CN102806426A (en) | 2012-12-05 |
| CN102806426B CN102806426B (en) | 2014-12-10 |
Family
ID=47230389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210276981.3A Active CN102806426B (en) | 2012-08-06 | 2012-08-06 | Welding process of auxiliary electrode for vacuum arc remelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102806426B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611663A (en) * | 2016-03-23 | 2016-05-25 | 攀钢集团江油长城特殊钢有限公司 | Electrode for vacuum self-consuming furnace and welding method thereof and vacuum self-consuming melting feeding method |
| CN107699707A (en) * | 2017-10-18 | 2018-02-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Consumable electrode vacuum furnace electrode shove charge servicing unit and method of smelting |
| CN107760876A (en) * | 2017-10-18 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Consumable electrode vacuum furnace electrode shove charge central alignment device and to correction method |
| CN110814481A (en) * | 2019-10-30 | 2020-02-21 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for titanium alloy |
| CN110935985A (en) * | 2019-12-10 | 2020-03-31 | 攀钢集团成都钛材有限公司江油分公司 | Method for welding auxiliary electrode in VAR smelting furnace |
| CN112809141A (en) * | 2020-12-30 | 2021-05-18 | 西安西工大超晶科技发展有限责任公司 | Furnace welding method of electrode for vacuum consumable arc furnace |
| CN114632997A (en) * | 2021-12-08 | 2022-06-17 | 抚顺特殊钢股份有限公司 | Welding method for super-large-diameter vacuum consumable electrode bar |
| CN115283785A (en) * | 2022-07-07 | 2022-11-04 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for VAR |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827807A (en) * | 2005-03-02 | 2006-09-06 | 王晓邦 | Vacuum consumable furnace with automatic welding electrode in furnace |
| CN102560136A (en) * | 2011-12-28 | 2012-07-11 | 攀钢集团江油长城特殊钢有限公司 | Smelting and arcing process for vacuum consumable electro-arc furnace, and smelting process |
-
2012
- 2012-08-06 CN CN201210276981.3A patent/CN102806426B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827807A (en) * | 2005-03-02 | 2006-09-06 | 王晓邦 | Vacuum consumable furnace with automatic welding electrode in furnace |
| CN102560136A (en) * | 2011-12-28 | 2012-07-11 | 攀钢集团江油长城特殊钢有限公司 | Smelting and arcing process for vacuum consumable electro-arc furnace, and smelting process |
Non-Patent Citations (3)
| Title |
|---|
| 李洪桂: "《稀有金属冶金原理及工艺》", 31 January 1981, article "三、钛（锆）真空自耗熔炼的工艺、表13-2 钛及钛合金真空自耗熔炼参数举例", pages: 403 - 409 * |
| 葛国秋: "真空自耗电弧炉电极控制***研究", 《中国硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 6, 15 June 2009 (2009-06-15), pages 023 - 43 * |
| 马勇军等: "辅助电极在VAR法熔炼生产中的应用", 《钛工业进展》, vol. 26, no. 3, 30 June 2009 (2009-06-30) * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611663A (en) * | 2016-03-23 | 2016-05-25 | 攀钢集团江油长城特殊钢有限公司 | Electrode for vacuum self-consuming furnace and welding method thereof and vacuum self-consuming melting feeding method |
| CN105611663B (en) * | 2016-03-23 | 2019-03-05 | 攀钢集团江油长城特殊钢有限公司 | The method of consumable electrode vacuum furnace electrode and welding method and vacuum consumable smelting feeding |
| CN107699707A (en) * | 2017-10-18 | 2018-02-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Consumable electrode vacuum furnace electrode shove charge servicing unit and method of smelting |
| CN107760876A (en) * | 2017-10-18 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Consumable electrode vacuum furnace electrode shove charge central alignment device and to correction method |
| CN110814481A (en) * | 2019-10-30 | 2020-02-21 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for titanium alloy |
| CN110814481B (en) * | 2019-10-30 | 2021-07-13 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for titanium alloy |
| CN110935985A (en) * | 2019-12-10 | 2020-03-31 | 攀钢集团成都钛材有限公司江油分公司 | Method for welding auxiliary electrode in VAR smelting furnace |
| CN112809141A (en) * | 2020-12-30 | 2021-05-18 | 西安西工大超晶科技发展有限责任公司 | Furnace welding method of electrode for vacuum consumable arc furnace |
| CN114632997A (en) * | 2021-12-08 | 2022-06-17 | 抚顺特殊钢股份有限公司 | Welding method for super-large-diameter vacuum consumable electrode bar |
| CN115283785A (en) * | 2022-07-07 | 2022-11-04 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for VAR |
| CN115283785B (en) * | 2022-07-07 | 2023-11-24 | 西部超导材料科技股份有限公司 | Butt welding method of auxiliary electrode for VAR |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102806426B (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102806426B (en) | Welding process of auxiliary electrode for vacuum arc remelting furnace | |
| CN100493797C (en) | Method of welding electrode for vacuum consumable arc-melting | |
| PH12019500796A1 (en) | Process for recycling cobalt-bearing materials | |
| WO2007070764A3 (en) | Method for controlling foaming of slag in an electric arc furnace | |
| CN102560136A (en) | Smelting and arcing process for vacuum consumable electro-arc furnace, and smelting process | |
| CN100363515C (en) | Arcing and smelting technology for liquid slag in electroslag furnace | |
| CN205382196U (en) | Zinc -tin vacuum distillation stove | |
| WO2010065469A3 (en) | Purification of materials non-electrically conductive in the solid state and electrically conductive in the molten state with electric induction power | |
| CN113430392B (en) | Efficient arc striking method for large-end-face electrode blank for electroslag smelting | |
| US4110547A (en) | Method of steelmaking with direct current | |
| JP5766406B2 (en) | Consumable electrode arc welding method | |
| CN205133703U (en) | Electroslag remelting furnace's scratch start device | |
| CN104139173A (en) | Technology for reducing cast-weld slag | |
| CN206435849U (en) | Air plasma cutter | |
| CN1712871A (en) | DC arc induction furnace | |
| CN103920971A (en) | Welding method, comb plate and welding rod used in process of storage battery production | |
| CN204240796U (en) | A kind of channel structure reducing disconnected ditch risk | |
| RU2368670C2 (en) | Method of steel melting in arc steel-making furnace of three-phase current | |
| RU2719811C1 (en) | Method of steel melting in three-phase current arc steel melting furnace | |
| CN213841737U (en) | Intermediate frequency furnace sealing structure for molten iron smelting | |
| SU1581509A1 (en) | Method of arc welding with plug welds | |
| CN210069917U (en) | Electric arc lighter | |
| CN207331020U (en) | A kind of electroslag remelting cold start-up arc initiation device | |
| CN101838742A (en) | Method for depleting copper and nickel smelting slag | |
| CN206037728U (en) | Titanium alloy vacuum melting electrically conducts flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180920 Address after: 621709 the 2 floor of Changchang steel factory, three Hezhen Town, Jiangyou, Sichuan Province, 5173 Patentee after: JIANGYOU BRANCH OF ANSTEEL GROUP CHENGDU TITANIUM MATERIALS CO.,LTD. Address before: 621701 Jiangdong Road, Jiangyou, Mianyang, Sichuan 195 Patentee before: PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 621700 floor 2, building 5173, Changgang plant, Sanhe Town, Jiangyou City, Mianyang City, Sichuan Province Patentee after: Jiangyou branch of Panzhihua Titanium Material Co., Ltd. of Pangang Group Address before: 621709 2 / F, building 5173, Changgang plant, Sanhe Town, Jiangyou City, Mianyang City, Sichuan Province Patentee before: JIANGYOU BRANCH OF ANSTEEL GROUP CHENGDU TITANIUM MATERIALS CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220415 Address after: 621700 Jiangdong Road, Jiangyou City, Mianyang, Sichuan Patentee after: PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL Co.,Ltd. Address before: 621700 floor 2, building 5173, Changgang plant, Sanhe Town, Jiangyou City, Mianyang City, Sichuan Province Patentee before: Jiangyou branch of Panzhihua Titanium Material Co., Ltd. of Pangang Group |