CN110125610A - A kind of steel ladle trunnion of converter bearing position abrasion reconstructing and repairing process - Google Patents
A kind of steel ladle trunnion of converter bearing position abrasion reconstructing and repairing process Download PDFInfo
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- CN110125610A CN110125610A CN201910496226.8A CN201910496226A CN110125610A CN 110125610 A CN110125610 A CN 110125610A CN 201910496226 A CN201910496226 A CN 201910496226A CN 110125610 A CN110125610 A CN 110125610A
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- welding wire
- steel ladle
- reconstructing
- grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a kind of steel ladle trunnion of converter bearing positions to wear reconstructing and repairing process, comprising the following steps: matrix cleaning, roughening treatment, plate is welded and fixed in purified treatment, the pre-heat treatment, deposition binder course, transition zone, working lining, machined layer remove fixed plate, integral grinding and polishing.A kind of steel ladle trunnion of converter bearing position abrasion provided by the invention remanufactures renovation technique, repairing price is only 10 ~ 150,000 yuan, small investment, quick, short time limit, simple process, easy to operate, easy to learn, easy grasp, technology are novel, at low cost, solid, not only it increased income and decreased expenditure for country, but also is that industry energy conservation subtracts consumption, huge contribution has been made in section source synergy.
Description
Technical field
The present invention relates to a kind of steel ladle trunnion of converter bearing positions to wear reconstructing and repairing process, is widely portable to smelting
The industries such as factory, steel mill.
Background technique
Currently, at home and abroad there is no steel ladle trunnion of converter bearing position method of worn, main problem is: steel ladle turns
Furnace ball socketed bearing position stress is concentrated, once steel ladle trunnion of converter bearing position stress is excessive and metal fatigue to a certain extent,
Being easy to crack along axis bottom causes partly or wholly to be broken, and the combination line of weld seam and matrix border and the faying face in deposition region are strong
Degree is difficult to control, it is possible to be caused molten steel directly to flow backward, be caused the accident.And change a steel ladle trunnion of converter bearing minimum 3000
Wan Yuan, service work need 15 days, and the loss that also needs directly to help daily is up to 4,000,000 yuan, it is seen that cost is costly, how to solve this
One problem is the technique, technology, the main attack project of material.
Summary of the invention
The object of the present invention is to provide a kind of steel ladle trunnion of converter bearing positions to wear reconstructing and repairing process.
For achieving the above object, the technical scheme is that a kind of steel ladle trunnion of converter bearing position is worn again
Make renovation technique, comprising the following steps:
Abrading section surface and oil contaminant, rust staining layer, fatigue layer are cleared up, ensures that the cleaning of matrix defect is thorough using dye penetrant inspection detection；
After matrix defect thorough cleaning is clean, roughening treatment is carried out；
After roughening treatment, purified treatment is carried out；
Matrix is heated and kept at 170-230 DEG C；
It is deposited over abrading section two sides and avoids welding steel at shearing force 10-15mm, connection steel plate forms fixed plate；
Using soaking molten method, by binder course, transition zone, working lining, machined layer processing gradient, by alloy material successively layer-by-layer deposition
In fray, alloy material is high-intensitive low stress coating material, and the metallurgical junction resultant force of binder course reaches 500N, closes in weld metal
The ratio of golden material and parent metal is 43.7:56.3；
Deposition stops heating after working, and removes fixed plate after matrix is cooling, carries out integral grinding and polishing.
Further, the deposition process specifically:
1) deposition together with austenite material and acid welding wire and alkaline welding wire, forms binder course in abrading section, brush away coating and
Oxidizing slag；
2) martensitic alloy dusty material deposition together with acid welding wire and alkaline welding wire, forms transition zone on binder course, brushes
Remove coating and oxidizing slag；
3) pearlitic materials deposition together with acid welding wire and alkaline welding wire, forms working lining on transition zone；
4) Alfer dusty material deposition fills and leads up abrading section bonding wire in forming machined layer on working lining.
Further, the grinding process specifically: using the method for manual grinding, to converter lifting lug welding position and axis
Reparation position carries out corase grinding and cuts, and restores basic size, retains unilateral 1mm surplus；Trunnion is rotated, it is carried out online using grinding machine
Grinding restores standard size, it is ensured that concentricity, the degree of balance, finish meet the needs of technical requirements.
Further, the deposition thickness ratio of the binder course neutral and alkali welding wire and acid welding wire is 3:1, austenitic alloy powder
End is 50 ~ 150g.
Further, the deposition thickness ratio of the transition zone neutral and alkali welding wire and acid welding wire is 3:1, martensitic alloy powder
End is 50 ~ 140g.
Further, in the working lining acid welding wire deposition with a thickness of 6 ~ 9mm, alkaline welding wire deposition with a thickness of 2 ~ 3mm,
Pearlitic materials are 50 ~ 100g, deposition with a thickness of 2 ~ 5mm.
Further, in the machined layer acid welding wire deposition with a thickness of 2 ~ 3mm, alkaline welding wire deposition with a thickness of 6 ~ 9mm,
Ferrite material deposition is with a thickness of 2 ~ 5mm.
The beneficial effects of the present invention are: a kind of steel ladle trunnion of converter bearing position abrasion provided by the invention remanufactures reparation
Technique, repairing price is only 10 ~ 150,000 yuan, small investment, quick, short time limit, simple process, easy to operate, easy to learn, the easy palm
Hold, technology it is novel, at low cost, solid, not only increased income and decreased expenditure for country, but for industry energy conservation subtract consumption, section source synergy make
Huge contribution.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment
With diameter phi 980+0.03mm, for the trunnion of converter of width 480mm, trunnion of converter and suspension reducer support shaft
Position abrasion is held, the unilateral 30mm of abrasion loss, unilateral roughening treatment 5mm is deep, and machining allowance is unilateral 5mm, and repairing unilateral is 40mm,
Roughness Ra 3.2.The trunnion of converter repair process are as follows:
1) until the smooth surface for being ground to cut inner wall and bottom surface exposing metal with abrasive machine；Purpose is that elimination fatigue layer is remaining residual
Object is stayed, deposition and combination are convenient for；
2) thrust button is made, vehicle goes out positioning step in shaft end, is fixed on shaft end by welding manner, is arc in conjunction with bottom surface；
3) austenitic alloy dusty material deposition together with acid welding wire and alkaline welding wire, forms in cut inner wall and bottom surface and combines
Layer, brushes away coating and oxidizing slag；
The deposition thickness ratio of the binder course neutral and alkali welding wire and acid welding wire is 3:1, and austenitic alloy powder is 50 ~ 150g；
4) martensitic alloy dusty material deposition together with acid welding wire and alkaline welding wire, forms transition zone on binder course, brushes
Remove coating and oxidizing slag；
The transition zone neutral and alkali welding wire 6 ~ 9mm of deposition thickness, 2 ~ 3mm of acid welding wire deposition thickness；So that transition zone neutral and alkali
The deposition thickness ratio of welding wire and acid welding wire is 3:1, and martensitic material is 50 ~ 140g, deposition with a thickness of 1 ~ 2mm；
5) pearlite alloys dusty material deposition together with acid welding wire and alkaline welding wire, forms working lining on transition zone, brushes
Remove coating and oxidizing slag；
2 ~ 3mm of the working lining neutral and alkali welding wire deposition thickness；6 ~ 9mm of the working lining neutral and alkali welding wire deposition thickness；So that
The deposition thickness ratio of the working lining neutral and alkali welding wire and acid welding wire is 1:3, the pearlite alloys powder about 50-100g,
1 ~ 2mm of material deposition thickness；
6) Alfer dusty material deposition fills and leads up crackle in forming machined layer on working lining, removes fixed plate, carries out whole
Body grinding and polishing.
Detection after reparation:
It is laggard to the validation criteria for whether reaching 10-15mm at converter shackle shaft key position shearing force with special measuring tool cubing
Row checks, it is ensured that repairs size and reaches technical size requirement；
Whether there are welding defect and hidden danger crackle with supersonic detector flaw detection；
It is detected with hardometer, whether hardness is consistent with the hardness of original matrix, and error is generally to be entirely capable of completely between HB5 ~ 10
The requirement of sufficient hardness.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to the scope of the present invention.
Claims (4)
1. reconstructing and repairing process is worn in a kind of steel ladle trunnion of converter bearing position, which comprises the following steps:
Abrading section surface and oil contaminant, rust staining layer, fatigue layer are cleared up, ensures that the cleaning of matrix defect is thorough using dye penetrant inspection detection；
After matrix defect thorough cleaning is clean, roughening treatment is carried out；
After roughening treatment, purified treatment is carried out；
Matrix is heated and kept at 170-230 DEG C；
It is deposited over abrading section two sides and avoids welding steel at shearing force 10-15mm, connection steel plate forms fixed plate；
Using soaking molten method, by binder course, transition zone, working lining, machined layer processing gradient, by alloy material successively layer-by-layer deposition
In fray, alloy material is high-intensitive low stress coating material, and the metallurgical junction resultant force of binder course reaches 500N, closes in weld metal
The ratio of golden material and parent metal is 43.7:56.3；
Deposition stops heating after working, and removes fixed plate after matrix is cooling, carries out integral grinding and polishing.
2. reconstructing and repairing process is worn in a kind of steel ladle trunnion of converter bearing position as described in claim 1, which is characterized in that institute
State deposition process specifically:
1) deposition together with austenite material and acid welding wire and alkaline welding wire, forms binder course in abrading section, brush away coating and
Oxidizing slag；
2) martensitic alloy dusty material deposition together with acid welding wire and alkaline welding wire, forms transition zone on binder course, brushes
Remove coating and oxidizing slag；
3) pearlitic materials deposition together with acid welding wire and alkaline welding wire, forms working lining on transition zone.
3.4) Alfer dusty material deposition fills and leads up abrading section bonding wire in forming machined layer on working lining.
4. reconstructing and repairing process is worn in a kind of steel ladle trunnion of converter bearing position as described in claim 1, which is characterized in that institute
State grinding process specifically: using the method for manual grinding, are carried out by corase grinding and is cut for converter lifting lug welding position and axis reparation position,
Restore basic size, retains unilateral 1mm surplus；Trunnion is rotated, on-line grinding is carried out to it using grinding machine, restores standard size,
Ensure that concentricity, the degree of balance, finish meet the needs of technical requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496226.8A CN110125610A (en) | 2019-06-10 | 2019-06-10 | A kind of steel ladle trunnion of converter bearing position abrasion reconstructing and repairing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496226.8A CN110125610A (en) | 2019-06-10 | 2019-06-10 | A kind of steel ladle trunnion of converter bearing position abrasion reconstructing and repairing process |
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| Publication Number | Publication Date |
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| CN110125610A true CN110125610A (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910496226.8A Pending CN110125610A (en) | 2019-06-10 | 2019-06-10 | A kind of steel ladle trunnion of converter bearing position abrasion reconstructing and repairing process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080328A (en) * | 1992-06-19 | 1994-01-05 | 联邦科学和工业研究组织 | The roll that metal forming is used |
| CN102294568A (en) * | 2011-04-27 | 2011-12-28 | 武汉开明高新科技有限公司 | Process for repairing breakage of rotary kiln tyre/roller |
| CN104588963A (en) * | 2015-01-23 | 2015-05-06 | 武汉开明高新科技有限公司 | Break repair technology for universal connecting rod of universal coupling |
| CN105177569A (en) * | 2015-10-13 | 2015-12-23 | 武汉华工激光工程有限责任公司 | Laser repairing method for ductile iron surface |
| CN108942077A (en) * | 2018-08-13 | 2018-12-07 | 芜湖鼎瀚再制造技术有限公司 | A kind of grinder hammerhead renovation technique |
-
2019
- 2019-06-10 CN CN201910496226.8A patent/CN110125610A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080328A (en) * | 1992-06-19 | 1994-01-05 | 联邦科学和工业研究组织 | The roll that metal forming is used |
| CN102294568A (en) * | 2011-04-27 | 2011-12-28 | 武汉开明高新科技有限公司 | Process for repairing breakage of rotary kiln tyre/roller |
| CN104588963A (en) * | 2015-01-23 | 2015-05-06 | 武汉开明高新科技有限公司 | Break repair technology for universal connecting rod of universal coupling |
| CN105177569A (en) * | 2015-10-13 | 2015-12-23 | 武汉华工激光工程有限责任公司 | Laser repairing method for ductile iron surface |
| CN108942077A (en) * | 2018-08-13 | 2018-12-07 | 芜湖鼎瀚再制造技术有限公司 | A kind of grinder hammerhead renovation technique |
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Effective date of registration: 20200327 Address after: 436000 room 320-324, building a, No.26, Shucheng Road, Hongshan District, Wuhan City, Hubei Province Applicant after: Wuhan Kaiming High Tech Co.,Ltd. Address before: 436000 Light Industrial Road, Wuhan Port Industrial Park, Ezhou City, Hubei Province Applicant before: HUBEI KAIMING HIGH-TECH Co.,Ltd. |
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