CN1180917C - Electric welding rod for built-up welding - Google Patents
Electric welding rod for built-up welding Download PDFInfo
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- CN1180917C CN1180917C CNB001291475A CN00129147A CN1180917C CN 1180917 C CN1180917 C CN 1180917C CN B001291475 A CNB001291475 A CN B001291475A CN 00129147 A CN00129147 A CN 00129147A CN 1180917 C CN1180917 C CN 1180917C
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Abstract
The present invention relates to an electric welding rod for built-up welding. The coating of the electric welding rod is prepared from carbonate, carbon ferrochrome, metal manganese, ferrotungsten, ferromolybdenum, ferrovanadium, fibrous filling materials, silicate adhesives, or / and potash feldspar, and rare earth silicon. The ingredients of the prescription are uniformly mixed and stirred respectively by medicinal powder with the granularity of 125 to 425 micrometers according to the conventional techniques; then, the ingredients are manufactured into coating paint by the silicate adhesives; the coating paint is pressed and sprayed on the surface of a welding core; finally, the electric welding rod for built-up welding, which has proper thickness of the coating, is manufactured. The hardness HRc of the built-up welding layer of the welding rod, which is from 58 to 60, meets the requirements of ceramic molds for the hardness. The present invention has the advantages of no need for the operation of preheating before welding in welding operation, no need for heat preservation after the welding, beautiful appearance formed by the build-up welding, easy slag release, little splashing, small smog and no cracks after the welding; thereby, the quality of the welding rod is ensured.
Description
Technical field
The present invention relates to the improvement of solder technology, specifically is a kind of electric welding rod for built-up welding, and it belongs to welding technology field.
Background technology
In the prior art, along with the develop rapidly of building industry, architectural pottery has obtained using widely.Ceramic die is that architectural pottery is produced necessary kit, yet its rate of wear is than very fast.The mould life cycle is shorter, and the mould consumption is big, thereby causes mould factory's cost to increase.Its reason is the key component of ceramic die---owing to the quality instability of core rod, causes the instability of die quality, directly influenced the service life of ceramic die.In the actual production mold process, built-up welding is to apply one deck at the surface of the work heap to have the technical process of the material of certain performance.Its objective is the property such as wear-resistant, corrosion-resistant or heat-resisting that improves the workpiece working face.For example, built-up welding one deck antifriction alloy on the normal carbon steel workpiece surface has promptly obtained the workpiece working face of desirable wearability, has reduced cost again.So, utilize bead-welding technology, repair the workpiece that is worn or corrodes and be both economy and effective method.Through the ceramic die that bead-welding technology is handled, the hardness specification requirement of its built-up welding layer can reach HRc 58～60.Yet in the bead-welding technology, maximum difficult point is the overlay cladding cracking.Prevent that the method that ftractures from being with the workpiece weld preheating, postweld heat preservation slow cooling, the layer cracking that the stress that produces to prevent temperature shock is concentrated and then caused.But bring thus be that power consumption is big, welder's poor working environment, problem that labour intensity is big.Wearing and tearing for steel various moulds, especially ceramic die are waited to repair, and press for special welding rod, so that the workpiece that in time utilizes the bead-welding technology reparation to be worn or to corrode.Adopt common wear-proof welding electrode welding, its effect is relatively poor, can not satisfy production requirement.The ceramic die built-up welding is domestic does not still have special welding rod at present.The employed surfacing welding of the manufacturer that has is to adopt lime-titania type, graphite mould, hydrogen controlled covering mostly.The producer that for example has substitutes with heap 322 (D322) welding rod.The greatest problem that exists in this welding rod weld deposit process is:
(1) power consumption is big: for preventing the postwelding cracking, must heat 4～5 hours (temperature 〉=420 ℃) before the core rod weldering in electric furnace; The core rod of postwelding needs to be incubated 8～10 hours again in electric furnace (temperature 〉=460 ℃).
(2) poor welding quality: carelessness is arranged in the process of preheating and insulation slightly, will produce bead crack, cause and do over again.
(3) inefficiency:, excessive to the labour intensity that makes the welder, working environment is too poor, production efficiency is low because the heavier temperature after heating in addition of weldment is higher.
Summary of the invention
The objective of the invention is three weak points at above-mentioned mould built-up welding, a kind of electric welding rod for built-up welding is provided, this welding rod is in the hope of reaching: core rod is without preheating before the weldering, and postwelding need not be incubated, and the core rod weld seam does not ftracture, and alleviates welder's labour intensity, improves working environment.
Task of the present invention is finished by following technical scheme, developed a kind of new-type electric welding rod for built-up welding, it comprises: core wire and outer coating, its ectomesoderm coating is made of following component, includes carbonate, carbon ferrochrome, manganese metal, ferrotungsten, molybdenum-iron, vanadium iron and silicate adhesive.The concrete preparation technology of this coating is as follows:
Weight percentages of components (%)
Carbonate 1～18;
Titanate 15～50;
Carbon ferrochrome 5～30;
Manganese metal 4～13;
Ferrotungsten 8～30;
Molybdenum-iron 3～18;
Vanadium iron 1～10;
Fibrous inserts 1～5;
Silicate adhesive 19～22;
Desilicate adhesive each component in addition of more than filling a prescription processing technology routinely, adopt the medicinal powder of 125～425 μ m granularities respectively, through mixing and stirring, make coating paint by silicate adhesive again, extrusion is on the core wire surface, through conventional processing technology, make coating thickness again, be used for the electric welding rod for built-up welding of built-up welding welding at 1.2～2.0mm.
The described core wire of this electric welding rod for built-up welding, its steel of selecting for use are: H08A mild steel, its specification is: φ 3.2～4.0mm.
The described outer coating of this electric welding rod for built-up welding also can add rare earth silicon in its prescription, and the percentage by weight of its adding is: 0～3%, the specification requirement of its raw material is: contain the rare earth element amount 24～27%, silicon content wants≤43%, and calcium content wants≤5.0%, granularity ≯ 425 μ m.
The described outer coating of this electric welding rod for built-up welding, also can add potassic feldspar in its prescription, the percentage by weight of its adding is: 0～15%, the specification requirement of its raw material is: contain silica volume 63～73%, salic amount is 15～24%, sulfur-bearing, phosphorus amount want≤0.040% respectively, granularity ≯ 425 μ m.
The described outer coating of this electric welding rod for built-up welding, the specification requirement of the selected raw material of carbon ferrochrome wherein is: chrome content wants 〉=60%, and phosphorus content wants≤6.0%, and sulfur content wants≤0.03%, and phosphorus content wants≤0.04%, granularity ≯ 250 μ m.
The described outer coating of this electric welding rod for built-up welding, the selected raw material of titanate wherein is: rutile or titanium dioxide; The specification requirement of selected rutile raw material is: containing the titanium dioxide amount is 〉=87.0%, granularity ≯ 425 μ m.The specification requirement of selected titanium dioxide raw material is: containing the titanium dioxide amount is 〉=98.0%, granularity ≯ 125 μ m.Selected two kinds of raw material sulfur-bearings, phosphorus amount want≤0.040% respectively.
The described outer coating of this electric welding rod for built-up welding, carbonate is wherein selected calcium carbonate for use, and the specification requirement of selected raw material is: contain calcium carbonate quantity and want 〉=98.0%, sulfur-bearing, phosphorus amount want≤0.030% respectively, granularity 125～250 μ m.
The described outer coating of this electric welding rod for built-up welding, the specification requirement of the selected raw material of manganese metal wherein is: manganese content will be 97.0%, and sulfur-bearing, phosphorus amount want≤0.04%, granularity ≯ 300 μ m.
The described outer coating of this electric welding rod for built-up welding, the specification requirement of the selected raw material of ferrotungsten wherein is: the tungstenic amount wants 〉=70%, and phosphorus content wants≤0.80%, and sulfur content wants≤0.10%, and phosphorus content wants≤0.06%, granularity ≯ 250 μ m.
The described outer coating of this electric welding rod for built-up welding, the specification requirement of the selected raw material of molybdenum-iron wherein is: contain the molybdenum amount and want 〉=55%, phosphorus content wants≤0.25%, and sulfur content wants≤0.15%, and phosphorus content wants≤0.10%, granularity ≯ 250 μ m.
The described outer coating of this electric welding rod for built-up welding, the specification requirement of the selected raw material of vanadium iron wherein is: vanadium content wants 〉=40%, and phosphorus content wants≤1.0%, and sulfur content wants≤0.06%, and phosphorus content wants≤0.10%, granularity ≯ 250 μ m.
The invention has the advantages that: owing to adopt when welding,, select carbonate for use to strengthen the approach of the flowability of welding molten iron, in the time of can making welding, arc stability; Calcium carbonate again and titanium dioxide (TiO
2) synergy, be equipped with TiO
2Improve the ac arc-stabilising of welding rod, but refinement molten drop during built-up welding helps eliminating the weld seam bubble, and deposited metal (behind the molten steel solidification) is not ftractureed.Through repeatedly research, can reach the HRc 58～60 of built-up welding layer, meet the hardness requirement of ceramic die fully; And core rod is without preheating before the weldering, and postwelding need not be incubated.For about 20,000 yuan/year of a small-scale industry energy conservation expense: electric furnace day/year calculates by 10 kilowatts/platform * 12 hour/day * 270.Welding rod of the present invention in the Foshan, the size tens tame mould factories on ground such as Quanzhou, Fujian, Shandong Zibo use, reflect generally that this welding rod operation is handy, moulding is attractive in appearance, take off slag easily, splash less, smog is less.After this welding rod uses, the core rod of deposited metal, postwelding does not ftracture, and has improved yield rate, has reduced waste, has guaranteed quality.Welding rod of the present invention in use because of heating, being incubated, alleviates welder's labour intensity.When the welder is welded, also can open door and window and ventilate, and need not face the workpiece of the high-temperature baking after the heating, thereby improve working environment, improve operating efficiency.Because coating recipe of the present invention is different from other similar covering of an electrode prescription, selected an amount of low (5～30%) carbon ferrochrome for use, the general consumption of this alloying constituent is 40～45%, and the present invention utilizes the stable three-dimensional Complex effect of an amount of chromium-iron-carbon, deposited metal is combined on the die workpiece surface securely, has realized the indehiscent good effect of postwelding deposited metal.The fibrous inserts that coating of the present invention adopts is cotton or chemical fibre, and it plays the connection integration when this coating extrusion moulding, plays deoxidation and carburization when the welding fusion, helps the raising of welding quality.
The specific embodiment
Protection scope of the present invention not only is confined in the embodiment, and embodiments of the invention have embodied protection scope of the present invention.
The core wire that this electric welding rod for built-up welding is selected, its steel are: H08A mild steel, its dimensions: φ 3.2～4.0mm.
Coating of the present invention, use the K of 2.9 moduluses (M): Na=3: 47～49 ° of B é silicate cement glass of 1 are as adhesive, and its addition accounts for 19～22% of raw meal total amount.
Coating of the present invention, the fibrous inserts that uses is cotton fiber, its addition accounts for 4% of raw meal total amount.
Each component beyond the coating recipe desilicate adhesive of the present invention processing technology step is routinely carried out, be processed into earlier the medicinal powder of each component respectively by the particle size range (μ m) of prescription regulation, through mixing and stirring, stir by silicate adhesive again, make coating paint, again through welding rod powder coating machine extrusion on the core wire surface, make the electric welding rod for built-up welding of coating thickness at 1.2～2.0mm.
Coating primary raw material formulation Example of the present invention such as following table 1:
Table 1
The technical conditions of each component raw material of coating of the present invention such as following table 2:
Table 2
| Title | Technical conditions | Granularity | The place of production |
| Marble | CaCO3≥98.0 S≤0.030 P≤0.030 | 125~250μm | Jiangsu high money marble factory |
| Titanium dioxide | TiO2≥98.0 S≤0.040 P≤0.040 | ≯125μm | Zhenjiang, Jiangsu titanium powder plant |
| Rutile | Ti02≥87.0 S≤0.040 P≤0.040 | ≯425μm | Xuanhua, Hebei ferroalloy works |
| Manganese metal | Mn 97.0 S≤0.040 P≤0.040 | ≯300μm | Jinzhou, Liaoning ferroalloy works |
| Carbon ferrochrome | Cr≥60 C≤6.0 S≤0.03 P≤0.04 | ≯250μm | Jinzhou, Liaoning ferroalloy works |
| Ferrotungsten | W≥70 C≤0.80 S≤0.10 P≤0.06 | ≯250μm | Jinzhou, Liaoning ferroalloy works |
| Molybdenum-iron | Mo≥55 C≤0.25 S≤0.15 P≤0.10 | ≯250μm | Jinzhou, Liaoning ferroalloy works |
| Vanadium iron | V≥40 C≤1.0 S≤0.06 P≤0.10 | ≯250μm | Jinzhou, Liaoning ferroalloy works |
| Rare earth silicon | Re 24～27 Si≤43 Ca≤5.0 Ti≤3.0 | ≯425μm | The Baotou |
| Potassic feldspar | SiO 263～73 Al 2O 315～24 S、P≤0.040 | ≯425μm | Tai'an, Shandong |
Claims (10)
1, a kind of electric welding rod for built-up welding, it comprises: H08A low carbon steel welding core and outer coating is characterized in that: it is specifically composed as follows that this coating comprises:
Weight percentages of components (%)
Calcium carbonate 1～18;
Rutile or titanium dioxide 10～50;
Carbon ferrochrome 5～30;
Manganese metal 4～13;
Ferrotungsten 8～30;
Molybdenum-iron 3～18;
Vanadium iron 1～10;
Fibrous inserts 1～5;
Silicate adhesive 19～22.
2, a kind of manufacture method of electric welding rod for built-up welding, desilicate adhesive each component in addition of more than filling a prescription processing technology routinely, adopt the medicinal powder of 125～425 μ m granularities respectively, through mixing and stirring, add silicate adhesive again and make coating paint, be coated with the pressure processing technology more routinely, be coated on the core wire surface, make coating thickness at 1.2～2.0mm, be used for the electric welding rod for built-up welding of built-up welding welding; It is characterized in that: described coating, also can add rare earth silicon in its prescription, the percentage by weight of its adding is: 0～3%, the specification requirement of its raw material is: contain the rare earth element amount 24～27%, silicon content wants 43%, and calcium content wants≤5.0%, granularity ≯ 425 μ m.
3, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described coating, also can add potassic feldspar in its prescription, the percentage by weight of its adding is: 0～15%, the specification requirement of its raw material is: contain silica volume 63～73%, salic amount is 15～24%, and sulfur-bearing, phosphorus amount want≤0.040% respectively, granularity ≯ 425 μ m.
4, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described coating, the specification requirement of the selected raw material of carbon ferrochrome wherein is: chrome content wants 60%, phosphorus content wants≤6.0%, sulfur content wants≤0.03%, and phosphorus content wants≤0.04%, granularity ≯ 250 μ m.
5, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, rutile wherein or titanium dioxide; The specification requirement of selected rutile raw material is: containing the titanium dioxide amount is 〉=87.0%, granularity ≯ 425 μ m; The specification requirement of selected titanium dioxide raw material is: containing the titanium dioxide amount is 〉=98.0%, granularity ≯ 125 μ m; Selected two kinds of raw material sulfur-bearings, phosphorus amount all want respectively≤and 0.040%.
6, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, the specification requirement of the selected raw material of calcium carbonate wherein is: contain pure calcium carbonate quantity and want 〉=98.0%, sulfur-bearing, phosphorus amount want≤0.030% respectively, granularity 125～250 μ m.
7, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, the specification requirement of the selected raw material of manganese metal wherein is: manganese content will be 〉=97.0%, and sulfur-bearing, phosphorus amount want≤0.04%, granularity ≯ 300 μ m.
8, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, the specification requirement of the selected raw material of ferrotungsten wherein is: the tungstenic amount wants 〉=70%, phosphorus content wants≤0.80%, sulfur content wants≤0.10%, phosphorus content wants≤0.06%, granularity ≯ 250 μ m.
9, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, the specification requirement of the selected raw material of molybdenum-iron wherein is: contain the molybdenum amount and want 〉=55%, phosphorus content wants≤0.25%, sulfur content wants≤0.15%, phosphorus content wants≤0.10%, granularity ≯ 250 μ m.
10, according to the manufacture method of the described electric welding rod for built-up welding of claim 2, it is characterized in that: described outer coating, the specification requirement of the selected raw material of vanadium iron wherein is: vanadium content wants 〉=40%, phosphorus content wants≤1.0%, sulfur content wants≤0.06%, phosphorus content wants≤0.10%, granularity ≯ 250 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001291475A CN1180917C (en) | 2000-10-09 | 2000-10-09 | Electric welding rod for built-up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001291475A CN1180917C (en) | 2000-10-09 | 2000-10-09 | Electric welding rod for built-up welding |
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| CN1290587A CN1290587A (en) | 2001-04-11 |
| CN1180917C true CN1180917C (en) | 2004-12-22 |
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| CNB001291475A Expired - Fee Related CN1180917C (en) | 2000-10-09 | 2000-10-09 | Electric welding rod for built-up welding |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879670B (en) * | 2010-06-03 | 2012-06-20 | 辽宁工程技术大学 | High wear resistance surfacing alloy material containing multiphase metal ceramics |
| CN106216876B (en) * | 2016-07-06 | 2018-06-05 | 宁波驰迈激光科技有限公司 | A kind of alloy for surfacing material |
| CN106271229A (en) * | 2016-08-18 | 2017-01-04 | 江苏锦阳不锈钢制品有限公司 | A kind of preparation method of high strength electrode |
| CN106216887A (en) * | 2016-08-18 | 2016-12-14 | 江苏锦阳不锈钢制品有限公司 | A kind of stainless steel electrode coating |
| CN107598407A (en) * | 2017-11-09 | 2018-01-19 | 湖州高恒电梯配件有限公司 | A kind of heap welding method |
| CN107627045A (en) * | 2017-11-09 | 2018-01-26 | 湖州高恒电梯配件有限公司 | A kind of welding wire for welding elevator guide shoe plate |
| CN107855681A (en) * | 2017-11-09 | 2018-03-30 | 湖州高恒电梯配件有限公司 | A kind of welding wire of built-up welding welding |
| CN107855677A (en) * | 2017-11-09 | 2018-03-30 | 湖州高恒电梯配件有限公司 | The welding method of elevator guide shoe plate |
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2000
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| CN1290587A (en) | 2001-04-11 |
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