CN103846610B - The isometrical renovation technique of plug - Google Patents
The isometrical renovation technique of plug Download PDFInfo
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- CN103846610B CN103846610B CN201210512153.5A CN201210512153A CN103846610B CN 103846610 B CN103846610 B CN 103846610B CN 201210512153 A CN201210512153 A CN 201210512153A CN 103846610 B CN103846610 B CN 103846610B
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- plug
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The isometrical renovation technique of plug, comprises the following steps: 1), check that plug quality determining whether has reparation and is worth: 2), recoverable plug is formulated recovery scenario: 3), plug is annealed, temperature general control, at 680 ° 720 °, is incubated 46 hours；4), plug is aligned, control flexibility≤4；5), machining；6), to mandrel surface crackle, conventional gas submerged arc bead welding, built-up welding preheating temperature: 140 ° 180 °；Control power supply: 170 180A；Heap postwelding holding temperature: 780 ° 800 °, continues 68 hours；Hardness: HB 330 380；7), it is heat-treated；8), machining；9), chrome-faced or zinc-plated, thickness 0.04 0.07, hardness: HRC:62 65；10) inspection.Present invention saves cost, improve production efficiency and product quality, extend service life.
Description
Technical field
The present invention relates to produce the plug of steel pipe, particularly relate to an isometrical renovation technique of plug wearing steel pipe.
Background technology
Plug is one of major part participating in steel pipe rolling deformation, and hot finished steel pipe plug piercing temperature is higher, simultaneously
Bear the highest axial tensile force and radial compressive stress and thermal wear, therefore to the performance of plug and surface quality requirements relatively
Height, the main performance that plug lost efficacy is heat fatigue, viscous erosion, corrode, deform, cracking etc., and thermal fatigue cracking is the most extreme damage
Bad form, causes service life low in sum, and production efficiency is the highest, and product quality declines, and in order to cost-effective, improve and produces
Efficiency, it is necessary to old plug is repaired.
Summary of the invention
It is an object of the invention to provide a kind of cost-effective, improve production efficiency and product quality, increase the service life
The isometrical renovation technique of plug.
The present invention is achieved in that the isometrical renovation technique of plug, it is characterised in that comprise the following steps:
1), check that plug quality determining whether has to repair to be worth: a, to the flexibility independent heap of plug more than 5
Put, wait aligning；B, to mandrel surface crack depth more than 10 scrap process, less than 10 etc. to be repaired；C, right
Meet above-mentioned reparation requirement old plug screw rule check, if can not tighten etc. to be repaired；
2), recoverable plug is formulated recovery scenario:
A formulates annealing process according to diameter of rod size: temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；
The bar of flexibility >=10 is aligned by b, controls flexibility≤4；
C, to mandrel surface crackle, commonly uses gas submerged arc bead welding, built-up welding preheating temperature: 140 ° of C-180 ° of C；Control power supply:
170-180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 hour；Hardness: HB 330-380；
The plug of heap postwelding is processed by d so that it is surface smoothness 0.8, flexibility≤1；
E chrome-faced or zinc-plated, thickness 0.04-0.07, hardness: HRC:62-65；
3), being annealed by plug, temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；
4), plug is aligned, control flexibility≤4；
5), machining；
6), to mandrel surface crackle, conventional gas submerged arc bead welding, built-up welding preheating temperature: 140 ° of C-180 ° of C；Control electricity
Source: 170-180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 hour；Hardness: HB 330-380；
7), it is heat-treated；
8), machining；
9), chrome-faced or zinc-plated, thickness 0.04-0.07, hardness: HRC:62-65；
10) inspection.
Present invention saves cost, improve production efficiency and product quality, extend service life.
Detailed description of the invention
The isometrical renovation technique of plug, it is characterised in that comprise the following steps: 1), check plug quality determine whether have
Repair be worth: a, to flexibility more than 5 plug individually stack, wait aligning；B, to mandrel surface crack depth more than 10
Scrap process, less than 10 etc. to be repaired；C, to meet above-mentioned reparation requirement old plug screw advise check, as
Fruit can not tighten etc. to be repaired；2), recoverable plug is formulated recovery scenario: a and formulate annealing according to diameter of rod size
Technique: temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；The bar of flexibility >=10 is aligned by b, controls
Flexibility≤4；C, to mandrel surface crackle, commonly uses gas submerged arc bead welding, built-up welding preheating temperature: 140 ° of C-180 ° of C；Control
Power supply: 170-180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 hour；Hardness: HB 330-380；D is to built-up welding
After plug be processed so that it is surface smoothness 0.8, flexibility≤1；E chrome-faced or zinc-plated, thickness 0.04-0.07
, hardness: HRC:62-65；3), being annealed by plug, temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；4), to core
Rod is aligned, and controls flexibility≤4；5), machining；6), to mandrel surface crackle, conventional gas submerged arc bead welding, heap
Weldering preheating temperature: 140 ° of C-180 ° of C；Control power supply: 170-180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 little
Time；Hardness: HB 330-380；7), it is heat-treated；8), machining；9), chrome-faced or zinc-plated, thickness 0.04-0.07, firmly
Degree: HRC:62-65；10) inspection.
Claims (1)
1. the isometrical renovation technique of plug, it is characterised in that comprise the following steps:
1), check that plug quality determining whether has to repair and be worth: a, the flexibility plug more than 5 is individually stacked, etc.
Wait to align；B, to mandrel surface crack depth more than 10 scrap process, less than 10 etc. to be repaired；C, to meet
Above-mentioned reparation require old plug screw rule check, if can not tighten etc. to be repaired；
2), recoverable plug is formulated recovery scenario:
A formulates annealing process according to diameter of rod size: temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；
The bar of flexibility >=10 is aligned by b, controls flexibility≤4；
C, to mandrel surface crackle, commonly uses gas submerged arc bead welding, built-up welding preheating temperature: 140 ° of C-180 ° of C；Control power supply: 170-
180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 hour；Hardness: HB 330-380；
The plug of heap postwelding is processed by d so that it is surface smoothness 0.8, flexibility≤1；
E chrome-faced or zinc-plated, thickness 0.04-0.07, hardness: HRC:62-65；
3), being annealed by plug, temperature general control, at 680 ° of C-720 ° of C, is incubated 4-6 hour；
4), plug is aligned, control flexibility≤4；
5), machining；
6), to mandrel surface crackle, conventional gas submerged arc bead welding, built-up welding preheating temperature: 140 ° of C-180 ° of C；Control power supply:
170-180A；Heap postwelding holding temperature: 780 ° of C-800 ° of C, continues 6-8 hour；Hardness: HB 330-380；
7), it is heat-treated；
8), machining；
9), chrome-faced or zinc-plated, thickness 0.04-0.07, hardness: HRC:62-65；
10) inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210512153.5A CN103846610B (en) | 2012-12-05 | 2012-12-05 | The isometrical renovation technique of plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210512153.5A CN103846610B (en) | 2012-12-05 | 2012-12-05 | The isometrical renovation technique of plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103846610A CN103846610A (en) | 2014-06-11 |
| CN103846610B true CN103846610B (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210512153.5A Active CN103846610B (en) | 2012-12-05 | 2012-12-05 | The isometrical renovation technique of plug |
Country Status (1)
| Country | Link |
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| CN (1) | CN103846610B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312437A (en) * | 2015-06-29 | 2017-01-11 | 南通市嘉业机械制造有限公司 | Equal-diameter recovery technique for mandrel |
| JP7185212B2 (en) * | 2018-02-07 | 2022-12-07 | 住友重機械ハイマテックス株式会社 | Tool material recycling method |
| CN110549068B (en) * | 2018-06-04 | 2021-09-24 | 天津高纳赛维科技有限公司 | Process method for equal-diameter repair of seamless steel tube core rod |
| CN109108531B (en) * | 2018-10-11 | 2020-09-29 | 苏州优霹耐磨复合材料有限公司 | Roller surfacing repair pretreatment method |
| WO2021152346A1 (en) * | 2020-01-29 | 2021-08-05 | Gonnella Rocco | Process for coating a mandrel for seamless pipe production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1326809A (en) * | 1969-12-24 | 1973-08-15 | Voest Ag | Method for the production of restoration of working rolls for hot rolling of metallic flat products |
| CN85106461A (en) * | 1985-08-28 | 1987-03-18 | 伏尔日斯克小轿车联合公司 | The method of restoring camshaft |
| RU2282750C1 (en) * | 2004-12-20 | 2006-08-27 | Агзамнур Мухаматгалиевич Шарифуллин | Method of repair of deep-well sucker-rod pump |
| CN101058139A (en) * | 2007-05-31 | 2007-10-24 | 天津钢管集团股份有限公司 | Welding technology for broken and waste core rod |
| CN102091719A (en) * | 2010-12-07 | 2011-06-15 | 宝钢集团常州轧辊制造公司 | Limiting mandrel for mandrel pipe mill and manufacturing method thereof |
-
2012
- 2012-12-05 CN CN201210512153.5A patent/CN103846610B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1326809A (en) * | 1969-12-24 | 1973-08-15 | Voest Ag | Method for the production of restoration of working rolls for hot rolling of metallic flat products |
| CN85106461A (en) * | 1985-08-28 | 1987-03-18 | 伏尔日斯克小轿车联合公司 | The method of restoring camshaft |
| RU2282750C1 (en) * | 2004-12-20 | 2006-08-27 | Агзамнур Мухаматгалиевич Шарифуллин | Method of repair of deep-well sucker-rod pump |
| CN101058139A (en) * | 2007-05-31 | 2007-10-24 | 天津钢管集团股份有限公司 | Welding technology for broken and waste core rod |
| CN102091719A (en) * | 2010-12-07 | 2011-06-15 | 宝钢集团常州轧辊制造公司 | Limiting mandrel for mandrel pipe mill and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN103846610A (en) | 2014-06-11 |
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Effective date of registration: 20171107 Address after: 214500 4 weft three road, Chengnan District, Jingjiang Economic Development Zone, Taizhou, Jiangsu Patentee after: Jiangsu Huayang new idea energy equipment Limited by Share Ltd Address before: 214500 Taizhou, Jiangsu, Jingjiang City Xinqiao Town South River Road Patentee before: Jiangsu Nanshan Metallurgical Machine Mfg. Co., Ltd. |
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