CN104551346A - Method for improving wear resistance of thick-plate bending and forming mould by means of surfacing - Google Patents
Method for improving wear resistance of thick-plate bending and forming mould by means of surfacing Download PDFInfo
- Publication number
- CN104551346A CN104551346A CN201510016701.9A CN201510016701A CN104551346A CN 104551346 A CN104551346 A CN 104551346A CN 201510016701 A CN201510016701 A CN 201510016701A CN 104551346 A CN104551346 A CN 104551346A
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- CN
- China
- Prior art keywords
- welding
- mould
- surfacing
- mold
- wear resistance
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a method for improving wear resistance of a thick-plate bending and forming mould by means of surfacing; high-strength steel welding wires are surfacing-welded at the stress and contact part of the mould, so that the wear resistance of the thick-plate bending and forming mould is improved and the service life of the bending and forming mould is prolonged. The method is realized as follows: the high-strength steel welding wires with the tensile strength Rm of not less than 600N/mm2 is surfacing-welded at the stress part of the mould, so that the contact parts, such as the pressure head of an upper die and the arc part of a lower die at the support side, of the mould are high-hardness metal during bending and forming. One layer of high-strength steel welding wires is surfacing-welded on the thick-plate bending and forming mould, so that the hardness of the contact surface is changed during the mould is working, the wear resistance of the contact surface is improved and the service life of the mould is prolonged. The method is simple and easy to operate and can be realized after being subjected to rough processing, surfacing of the high-strength steel welding wires and fine processing. The method not only solves the difficulty that the conventional mould needs to be repaired frequently after being worn, but maintains the size stability of the contact surface of the mould and guarantees bending and forming precision.
Description
Technical field:
The present invention relates to a kind of method improving wear resistance, particularly relate to a kind of method utilizing built-up welding to improve slab press shaping die mold wear resistance
Background technology:
At present, for the general mold of slab press shaping die, patrix adopts welded-steel plate construction part, and counterdie adopts steel-casting, all adopts tensile strength rank at 500N/mm
2following mild steel or low-alloy steel, its hardness is lower.After using a period of time, the force part contacted with shaping steel plate produces wear phenomenon in various degree, brings inconvenience not only to the operation of press shaping die centering, also reduces the forming accuracy of steel plate.This just needs to carry out Welding Repair to mold, greatly delays the production cycle.
Summary of the invention:
The present invention, by the forced contact position built-up welding high-strength steel welding wire of mold, improves the wear resistance of slab press shaping die mold, improves the service life of press shaping die mold.Technical scheme of the present invention is:
1) mold roughing: plane processing is carried out at the forced contact position of patrix (1) and counterdie (3), and processing capacity is not less than 5mm;
2) treat that facing surface is cleared up: the impurity of greasy dirt within the scope of facing surface and surrounding 20mm thereof, moisture content impact welding is treated in cleaning;
3) welding material is selected: welding material selects tensile strength to be not less than the HS-80A welding wire of 600N/mm2;
4) weld preheating: weld preheating is not less than 80 DEG C;
5) built-up welding operation: adopt gas metal-arc welding to treat surfacing part (2) and carry out welding; Welding current 220A ~ 280A, weldingvoltage 22V ~ 32V; According to multi-pass welding mode, continuous sequence, midway is uninterrupted;
6) dipping cun is drawn: draw inspection surfacing part (2) thickness and other size, meet the allowance of postorder mold;
7) mold fine finishining: use planer to carry out fine finishining to surfacing part (2) surface, meet the shape line requirement of press shaping die.
Technique effect:
The present invention is built-up welding one deck high-strength steel welding wire on slab press shaping die mold, changes the hardness of contact surface during mold work, improves the wear resistance of contact surface, thus extend the service life of mold.
The present invention adopts that method is simple, by roughing, built-up welding high-strength steel welding wire, then carries out accurately machined mode and just can realize.Need a difficult problem of often repairing after not only solving the wearing and tearing of conventional mold, more maintain the stability of mold contact surface size, ensure that the precision of press shaping die.
Accompanying drawing illustrates:
Fig. 1 is the embodiment of press shaping die mold patrix.
Fig. 2 is the embodiment of press shaping die mold counterdie.
Wherein 1 is patrix, and 2 is surfacing part, and 3 is counterdie
Detailed description of the invention:
1) mold roughing: plane processing is carried out at the forced contact position of patrix 1 and counterdie 3, and processing capacity is not less than 5mm;
2) treat that facing surface is cleared up: the impurity of the impact such as greasy dirt, moisture content welding within the scope of facing surface and surrounding 20mm thereof is treated in cleaning;
3) welding material is selected: welding material selects tensile strength to be not less than 600N/mm
2high-strength steel welding wire, such as HS-80A welding wire (being equivalent to GB ER76-G);
4) weld preheating: weld preheating is not less than 80 DEG C;
5) built-up welding operation: adopt gas metal-arc welding to treat surfacing part 2 and carry out welding; Welding current 220A ~ 280A, weldingvoltage 22V ~ 32V; According to multi-pass welding mode, continuous sequence, midway is uninterrupted;
6) dipping cun is drawn: draw inspection surfacing part 2 thickness and other size, meet the allowance of postorder mold;
7) mold fine finishining: use planer to carry out fine finishining to surfacing part 2 surface, meet the shape line requirement of press shaping die.
Claims (1)
1. utilize built-up welding to improve a method for slab press shaping die mold wear resistance, it is characterized in that:
1) mold roughing: plane processing is carried out at the forced contact position of patrix (1) and counterdie (3), and processing capacity is not less than 5mm;
2) treat that facing surface is cleared up: the impurity of greasy dirt within the scope of facing surface and surrounding 20mm thereof, moisture content impact welding is treated in cleaning;
3) welding material is selected: welding material selects tensile strength to be not less than the HS-80A welding wire of 600N/mm2;
4) weld preheating: weld preheating is not less than 80 DEG C;
5) built-up welding operation: adopt gas metal-arc welding to treat surfacing part (2) and carry out welding; Welding current 220A ~ 280A, weldingvoltage 22V ~ 32V; According to multi-pass welding mode, continuous sequence, midway is uninterrupted;
6) dipping cun is drawn: draw inspection surfacing part (2) thickness and other size, meet the allowance of postorder mold;
7) mold fine finishining: use planer to carry out fine finishining to surfacing part (2) surface, meet the shape line requirement of press shaping die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016701.9A CN104551346A (en) | 2015-01-13 | 2015-01-13 | Method for improving wear resistance of thick-plate bending and forming mould by means of surfacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016701.9A CN104551346A (en) | 2015-01-13 | 2015-01-13 | Method for improving wear resistance of thick-plate bending and forming mould by means of surfacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104551346A true CN104551346A (en) | 2015-04-29 |
Family
ID=53068990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016701.9A Pending CN104551346A (en) | 2015-01-13 | 2015-01-13 | Method for improving wear resistance of thick-plate bending and forming mould by means of surfacing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104551346A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872478A (en) * | 2005-05-30 | 2006-12-06 | 上海鸿威硬面技术有限公司 | Built up welding technique for compound mould in hard surface in use for finish forge machine |
| CN101628374A (en) * | 2009-08-11 | 2010-01-20 | 重庆大学 | Method for preparing forging mould by double-layer metal resurfacing welding based on cast steel substrate |
| CN201385086Y (en) * | 2009-02-26 | 2010-01-20 | 浙江金盾压力容器有限公司 | Lower die for manufacturing steel seamless gas cylinder |
| CN102441771A (en) * | 2011-10-18 | 2012-05-09 | 天津国际机械有限公司 | Processing technique of valve parts in ball valve with hard seal structure |
| CN103182618A (en) * | 2011-12-28 | 2013-07-03 | 湖北三环车桥有限公司 | Overlaying manufacture repair technology for roll forging die |
| CN103561880A (en) * | 2011-05-16 | 2014-02-05 | 丰田自动车株式会社 | Metal mold for hot pressing and method for manufacturing metal mold for hot pressing |
-
2015
- 2015-01-13 CN CN201510016701.9A patent/CN104551346A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872478A (en) * | 2005-05-30 | 2006-12-06 | 上海鸿威硬面技术有限公司 | Built up welding technique for compound mould in hard surface in use for finish forge machine |
| CN201385086Y (en) * | 2009-02-26 | 2010-01-20 | 浙江金盾压力容器有限公司 | Lower die for manufacturing steel seamless gas cylinder |
| CN101628374A (en) * | 2009-08-11 | 2010-01-20 | 重庆大学 | Method for preparing forging mould by double-layer metal resurfacing welding based on cast steel substrate |
| CN103561880A (en) * | 2011-05-16 | 2014-02-05 | 丰田自动车株式会社 | Metal mold for hot pressing and method for manufacturing metal mold for hot pressing |
| CN102441771A (en) * | 2011-10-18 | 2012-05-09 | 天津国际机械有限公司 | Processing technique of valve parts in ball valve with hard seal structure |
| CN103182618A (en) * | 2011-12-28 | 2013-07-03 | 湖北三环车桥有限公司 | Overlaying manufacture repair technology for roll forging die |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |