CN111843106A - Overlaying welding dilution compensation process - Google Patents
Overlaying welding dilution compensation process Download PDFInfo
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- CN111843106A CN111843106A CN202010579037.XA CN202010579037A CN111843106A CN 111843106 A CN111843106 A CN 111843106A CN 202010579037 A CN202010579037 A CN 202010579037A CN 111843106 A CN111843106 A CN 111843106A
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- Prior art keywords
- surfacing
- curing
- alloy powder
- coating
- water glass
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Classifications
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- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/32—Accessories
Abstract
The invention discloses a build-up welding dilution compensation process, which comprises the following steps: preparing a diluted compensation solution, mixing alloy powder with a potassium water glass solution, adjusting the water addition amount of the potassium water glass solution, controlling proper viscosity, and controlling the viscosity of the potassium water glass solution within a control range of 101～106The proportion of the alloy powder is over 50 percent; coating, namely coating the diluted compensation solution on a curved surface, an inclined surface or a roller surface needing dilution compensation, wherein the coating thickness is 2-10 mm; curing, namely curing the coated alloy powder potassium-water glass mixed coating in a natural curing mode, an accelerated curing mode by using a carbon dioxide atmosphere or a high-temperature drying curing mode at a temperature of more than 200 ℃; drying, removing residual water of the mixed coating, and treating at 200-500 ℃; surfacing, curing and drying the mixed coating, and then performing surfacing according to a normal surfacing procedureAnd (6) surfacing. Through the mode, the diluted alloy content of the overlaying layer can be compensated.
Description
Technical Field
The invention relates to the technical field of electric arc welding, in particular to a surfacing welding dilution compensation process.
Background
When the metal material is overlaid on the surface of a workpiece in an arc welding mode, as the heat input quantity of arc welding is large and the penetration depth is deep, a base metal is melted and then mixed with an overlaying layer, so that the alloy components of the overlaying layer are changed, the general overlaying mainly overlays a high-alloy material on a low-carbon or low-alloy base metal, so that the alloy content of the overlaying layer is diluted, and the dilution rate can reach 30-50% according to different overlaying modes or parameters.
Because the alloy components of the overlaying layer are diluted, the content of effective alloy components is reduced, and the wear resistance, corrosion resistance or oxidation resistance and other performances of the overlaying layer can be influenced.
Disclosure of Invention
The invention mainly solves the technical problem of providing a dilution compensation process for overlaying, which is convenient for coating and attaching on the surface of a workpiece, can avoid welding defects and prevent a large amount of smoke welding slag from splashing in the welding process, can compensate the diluted alloy content of an overlaying layer, and meets various overlaying requirements.
In order to solve the technical problems, the invention adopts a technical scheme that: the surfacing dilution compensation process comprises the following steps:
the method comprises the following steps: preparing a diluted compensation solution, mixing alloy powder with a potassium water glass solution, adjusting the water addition amount of the potassium water glass solution, controlling the proper viscosity, conveniently coating and attaching the mixture on the surface of a workpiece, and controlling the viscosity of the potassium water glass solution within a control range of 10 1～106The larger the surface curvature or the larger the inclination of the workpiece is, the larger the required viscosity is, and the proportion of the alloy powder is more than 50 percent;
step two: coating, namely coating the diluted compensation solution on a curved surface, an inclined surface or a roller surface needing dilution compensation, wherein the coating thickness is 2-10 mm, the thin coating has no dilution compensation effect, and the thick coating can not penetrate through an electric arc to a mother material, so that false welding is easily caused;
step three: curing, namely curing the coated alloy powder potassium-water glass mixed coating in a natural curing mode, an accelerated curing mode by using a carbon dioxide atmosphere or a high-temperature drying curing mode at a temperature of more than 200 ℃;
step four: drying, further removing residual water of the mixed coating after curing, and treating at 200-500 ℃ to avoid welding defects or a large amount of smoke welding slag splashing generated in the subsequent welding process;
step five: and (4) surfacing, namely surfacing the mixed coating according to a normal surfacing procedure after curing and drying.
Preferably, in the first step, the alloy powder adopts high-carbon ferrochrome powder, the alloy powder is suitable for hard-surface wear-resistant surfacing, and the UPW-626 high-carbon high-chromium flux-cored wire is used for surfacing after coating, curing and drying, the content of carbon and chromium close to a parent material dilution layer is close to a surface welding layer, the hardness and carbide content are close to a surface layer, and the wear resistance of the dilution layer is not reduced.
Preferably, in the first step, the alloy powder is 304 stainless steel powder, the alloy powder is suitable for hard surface overlaying of the continuous casting roller, the UPW-614 stainless steel flux-cored wire is used for overlaying after coating, curing and drying, the content of chromium and nickel close to the parent metal dilution layer is about 12.5% of chromium and 3% of nickel, the requirement of the use environment characteristic of the continuous casting roller is met, and the service life can be prolonged.
Compared with the prior art, the invention has the beneficial effects that: the coating is convenient to be coated on the surface of a workpiece, welding defects can be avoided, a large amount of smoke welding slag generated in the welding process can be prevented from splashing, the content of diluted alloy in a surfacing layer can be compensated, and various surfacing requirements are met.
Detailed Description
The following detailed description of the preferred embodiments of the invention is provided to enable those skilled in the art to more readily understand the advantages and features of the invention, and to clearly and unequivocally define the scope of the invention.
The embodiment of the invention comprises the following steps:
a build-up welding dilution compensation process comprises the following steps:
the method comprises the following steps: preparing a diluted compensation solution, mixing alloy powder with a potassium water glass solution, adjusting the water addition amount of the potassium water glass solution, controlling the proper viscosity, conveniently coating and attaching the mixture on the surface of a workpiece, and controlling the viscosity of the potassium water glass solution within a control range of 10 1～106Inner, the greater the curvature or inclination of the workpiece surface, the need forThe higher the viscosity of the alloy powder is, the alloy powder accounts for more than 50 percent;
step two: coating, namely coating the diluted compensation solution on a curved surface, an inclined surface or a roller surface needing dilution compensation, wherein the coating thickness is 2-10 mm, the thin coating has no dilution compensation effect, and the thick coating can not penetrate through an electric arc to a mother material, so that false welding is easily caused;
step three: curing, namely curing the coated alloy powder potassium-water glass mixed coating in a natural curing mode, an accelerated curing mode by using a carbon dioxide atmosphere or a high-temperature drying curing mode at a temperature of more than 200 ℃;
step four: drying, further removing residual water of the mixed coating after curing, and treating at 200-500 ℃ to avoid welding defects or a large amount of smoke welding slag splashing generated in the subsequent welding process;
step five: and (4) surfacing, namely performing surfacing welding on the mixed coating according to a normal surfacing welding procedure after the mixed coating is cured and dried.
In the first step, the alloy powder adopts high-carbon ferrochrome powder, so that the alloy powder is suitable for hard-surface wear-resistant surfacing, and after coating, curing and drying, the UPW-626 high-carbon high-chromium flux-cored wire is used for surfacing, the carbon-chromium content of the dilution layer close to the base metal is close to that of the surface welding layer, the hardness and the carbide content are close to those of the surface layer, and the wear resistance of the dilution layer is not reduced.
In the first step, the alloy powder is 304 stainless steel powder, so that the alloy powder is suitable for hard surfacing of the continuous casting roller, and the alloy powder is coated, cured and dried and then subjected to surfacing by using a UPW-614 stainless steel flux-cored wire, wherein the content of chromium and nickel close to the dilution layer of the base metal is about 12.5% of chromium and 3% of nickel, so that the requirement on the service environment characteristic of the continuous casting roller is met, and the service life can be prolonged.
The surfacing dilution compensation process provided by the invention is convenient for coating and attaching on the surface of a workpiece, can avoid welding defects and prevent a large amount of smoke welding slag from splashing in the welding process, can compensate the diluted alloy content of a surfacing layer, and meets various surfacing requirements.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. A surfacing dilution compensation process is characterized in that: the surfacing welding dilution compensation process comprises the following steps:
the method comprises the following steps: preparing a diluted compensation solution, mixing alloy powder with a potassium water glass solution, adjusting the water addition amount of the potassium water glass solution, controlling proper viscosity, and controlling the viscosity of the potassium water glass solution within a control range of 10 1～106The proportion of the alloy powder is over 50 percent;
step two: coating, namely coating the diluted compensation solution on a curved surface, an inclined surface or a roller surface needing dilution compensation, wherein the coating thickness is 2-10 mm;
step three: curing, namely curing the coated alloy powder potassium-water glass mixed coating in a natural curing mode, an accelerated curing mode by using a carbon dioxide atmosphere or a high-temperature drying curing mode at a temperature of more than 200 ℃;
step four: drying, curing, and then further removing residual moisture of the mixed coating, wherein the treatment temperature is 200-500 ℃;
step five: and (4) surfacing, namely surfacing the mixed coating according to a normal surfacing procedure after curing and drying.
2. The build-up welding dilution compensation process according to claim 1, characterized in that: in the first step, the alloy powder adopts high-carbon ferrochrome powder, is suitable for hard-surface wear-resistant surfacing, and is coated, cured and dried for surfacing by using a UPW-626 high-carbon high-chromium flux-cored wire.
3. The build-up welding dilution compensation process according to claim 1, characterized in that: in the first step, the alloy powder is 304 stainless steel powder, so that the alloy powder is suitable for hard surfacing of a continuous casting roller, and the alloy powder is coated, cured and dried to be subjected to surfacing by using a UPW-614 stainless steel flux-cored wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579037.XA CN111843106A (en) | 2020-06-23 | 2020-06-23 | Overlaying welding dilution compensation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579037.XA CN111843106A (en) | 2020-06-23 | 2020-06-23 | Overlaying welding dilution compensation process |
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| CN111843106A true CN111843106A (en) | 2020-10-30 |
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| CN202010579037.XA Pending CN111843106A (en) | 2020-06-23 | 2020-06-23 | Overlaying welding dilution compensation process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626306A (en) * | 2003-12-10 | 2005-06-15 | 上海工程技术大学 | An Automatic built up welding method and equipment |
| JP2007307565A (en) * | 2006-05-16 | 2007-11-29 | Hitachi Ltd | Method of surface coating |
| CN103769765A (en) * | 2012-10-17 | 2014-05-07 | 沈阳工业大学 | Wear resistant surfacing alloy containing ceramic phase with molybdenum and chromium elements and production technology thereof |
| CN106180971A (en) * | 2016-08-25 | 2016-12-07 | 辽宁工程技术大学 | Tungsten carbide Fe-based self-fluxing alloy resurfacing welding material and overlaying method |
| CN107088694A (en) * | 2017-05-17 | 2017-08-25 | 苏州南尔材料科技有限公司 | A kind of welding method of carbon silicon doping resurfacing welding material |
| CN108788388A (en) * | 2017-05-03 | 2018-11-13 | 北京中煤大田耐磨材料有限公司 | A kind of technique that built-up welding makes high-performance abrasion-proof plate |
-
2020
- 2020-06-23 CN CN202010579037.XA patent/CN111843106A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1626306A (en) * | 2003-12-10 | 2005-06-15 | 上海工程技术大学 | An Automatic built up welding method and equipment |
| JP2007307565A (en) * | 2006-05-16 | 2007-11-29 | Hitachi Ltd | Method of surface coating |
| CN103769765A (en) * | 2012-10-17 | 2014-05-07 | 沈阳工业大学 | Wear resistant surfacing alloy containing ceramic phase with molybdenum and chromium elements and production technology thereof |
| CN106180971A (en) * | 2016-08-25 | 2016-12-07 | 辽宁工程技术大学 | Tungsten carbide Fe-based self-fluxing alloy resurfacing welding material and overlaying method |
| CN108788388A (en) * | 2017-05-03 | 2018-11-13 | 北京中煤大田耐磨材料有限公司 | A kind of technique that built-up welding makes high-performance abrasion-proof plate |
| CN107088694A (en) * | 2017-05-17 | 2017-08-25 | 苏州南尔材料科技有限公司 | A kind of welding method of carbon silicon doping resurfacing welding material |
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Application publication date: 20201030 |
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