CN102974959A - Welding rod for repairing cold working die cutting edge - Google Patents
Welding rod for repairing cold working die cutting edge Download PDFInfo
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- CN102974959A CN102974959A CN2012104866358A CN201210486635A CN102974959A CN 102974959 A CN102974959 A CN 102974959A CN 2012104866358 A CN2012104866358 A CN 2012104866358A CN 201210486635 A CN201210486635 A CN 201210486635A CN 102974959 A CN102974959 A CN 102974959A
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Abstract
The invention relates to a welding rod for repairing a cold working die cutting edge. The welding rod comprises a core welding-wire and a coating extruded outside the core welding-wire, wherein the coating contains the following components in parts by weight: 40-50 parts of marble, 20-35 parts of fluorite, 5-7 parts of silica sand, 1-4 parts of titanium dioxide, 3-5 parts of 45# atomized ferrosilicon powder, 6-10 parts of Ti powder, 3-5 parts of manganese metal, 15-25 parts of high carbon ferro-chrome, 4-6 parts of FeMo60-A, 6-8 parts of FeV50-A, 1-2 parts of FeSiRE23 and 0.5-2 parts of nickel powder. According to the welding rod disclosed by the invention, the welding technology is simple and practicable, and a die needs not to be preheated before welding and needs no heat treatment after welding, therefore the die is prevented from possibly cracking or deforming caused by the preheating and heat treatment; the hardness of deposited metal can be larger than or equal to HRC55 without heat treatment after welding, and the deposited metal has no cracks, therefore the welding rod is applicable to the field welding operation; and the service life of the cutting edge after welding can be 1-2 times or 2-3 times as long as the service life of the cutting edge of the prior die, so that the manufacture time of the die is greatly shortened.
Description
Technical field
The present invention relates to a kind of welding rod, particularly relate to a kind of welding rod for cold-work die cutting edge reparation usefulness.
Background technology
Every field cold-work die in machinery production is extensively answered, and metal or nonmetallic cold conditions are shaped and mostly adopt cold-work die to finish.The effect that cold-work die bears the different stress such as stretching, bending, compression, impact, fatigue in the process under arms, and be used for the mould of metal cold-extruded, Leng Dun, cold stretch, also to bear the alternating temperature-changing effect about 300 ℃, in the traditional moulds manufacturing process, cold mold integral all adopts carbon tool steel or alloy tool steel making.In the use procedure, the die point slightly whole mould of defectiveness (crackle, collapse piece, wearing and tearing etc.) will be scrapped.The cold-work die cutting edge that adopts the welding method reparation to damage have the cycle short, cost is low, consume less, the efficient high.Repairing funds in need only is the 10%-20% of manufacturing cost, and therefore, mould repair has great economic worth.
There is following problem in the welding material that is used at present the reparation of cold-work die blade weld:
1. before the welding rod welding, mother metal needs preheating more than 300 ℃, not so easy cracking, and deposited metal will be through once after the welding, even repeatedly heat treatment, and deposited metal just can reach required hardness, causes the mould repair cost high, and the renovation technique difficulty is large, should not grasp;
2. short service life with the die point after the existing welding rod REPAIR WELDING.
Therefore, the needs development is a kind of both can weld under the normal temperature, and welding procedure is simple, and cost is lower, can satisfy again the welding material of die life.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of welding rod of repairing the cutting edge reparation usefulness that rear die life is long, manufacturing cost is lower, the operation welding procedure is easy.
For reaching above-mentioned purpose, a kind of welding rod for cold-work die cutting edge reparation usefulness of the present invention, coating outside core wire forms by core wire and extrusion, described coating contains the component of following weight portion: 40～50 parts in marble, 20～35 parts in fluorite, 5～7 parts of quartz sands, 1～4 part of titanium dioxide, 3～5 parts of 45# atomizing ferrosilicon powders (Antaciron that siliceous 45% atomization method is produced), 6～10 parts in Ti powder, 3～5 parts of manganese metals, 15～25 parts of high carbon ferro-chromes, FeMo60-A(contains the molybdenum-iron of molybdenum 60%) 4～6 parts, FeV50-A(contains the vanadium iron of vanadium 50%) 6～8 parts, FeSiRE23(contains the rare earth ferrosilicon of rare earth 23%) 1～2 part, 0.5～2 part of nickel powder, more than each raw material be the commercially available prod.
Welding rod of the present invention, wherein said core wire can be selected this area core wire material commonly used, preferably adopt the H08E electrode wire.
Welding rod of the present invention, the hardness of welding deposited metal with this welding rod is HRC55～61.
The invention still further relates to the method for the above-mentioned welding rod of preparation, the above-mentioned welding rod powder for preparing is by weight joined in the mixer, at first be dry mixed 25 minutes, then add binding agent and stirred 30 minutes, even mixed powder is taken out, adopt electrode extrusion press to make welding rod, with welding rod drying, and get final product.
Further, the present invention prepares the method for above-mentioned welding rod, and wherein preferred described welding rod drying temperature process is: 35 ℃ of insulations of low temperature 3 hours, 100 ℃ of insulations of middle temperature 1.5 hours, 400 ℃ of insulations of high temperature 1.5 hours.
Further, wherein preferred described binding agent is that potassium, na oxide mass ratio are that the liquor potassic permanganate that adds 5 ‰ percetages by weight in the waterglass of 3:1 obtains, and the modulus of waterglass is 3.0, and Baume concentration is 48.
The invention difference from existing technology is, covering of an electrode component of the present invention is different, coating adopts the alkaline low-hydrogen type slag system, adopt 45# atomizing ferrosilicon powder, manganese metal, titanium valve combined deoxidation, do not add the constituent that contains the crystallization water such as feldspar, chalk, natural mica etc., composition makes coating have desulfurization and falls Hydrogen Energy power like this, adopt simultaneously titanium valve, FeMo60-A, FeV50-A, FeSiRE23, the multiple alloy of nickel powder with the synergy of approrpiate wts proportioning, make the refinement of weld metal compact-grain, have high rigidity and high cracking resistance energy.
The surfacing welding of now market sale, mother metal needs preheating more than 300 ℃ before the welding, not so weld seam ftractures easily, welding rod welding procedure simple possible of the present invention, mother metal is without the preheating mother metal before the welding, deposited metal can reach required hardness, crack of die or the distortion of having avoided preheating and heat treatment to cause without heat treatment after the welding.
The surfacing welding of now market sale, postwelding hardness is low, requires heat treatment, even repeatedly heat treatment just can reach required hardness, causes the mould repair cost high, and the renovation technique difficulty is large, should not grasp; Welding rod postwelding deposited metal of the present invention is without heat treatment, and hardness both can reach 〉=HRC55, and flawless, is fit to the Site Welding operation.
The surfacing welding of present market sale, reparation is short rear die life, and the rear life-span of general reparation is difficult to reach original life-span.And welding rod of the present invention both can weld under the normal temperature, and welding procedure is simple, and cost is lower, and the postwelding cutting edge life-span is compared with original mould and can reach or improve 1～2 times, can greatly shorten the time that mould is made, and became Fei Weibao, for enterprise saves a large amount of expenses.
The specific embodiment
Below in conjunction with embodiment and test data, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
Embodiment 1
Specifically consisting of of electrode coating: 40 kilograms in marble, 25 kilograms in fluorite, 5 kilograms of quartz sands, 2 kilograms of titanium dioxides, 3 kilograms of ferrosilicon powders of 45# atomizing, 6 kilograms in Ti powder, 3 kilograms of manganese metals, 15 kilograms of high carbon ferro-chromes, FeMo60-A4 kilogram, 1 kilogram of 6 kilograms of FeV50-A, FeSiRE23,0.5 kilogram of nickel powder.Core wire adopts the H08E electrode wire, and binding agent adopts the waterglass of potassium sodium 3:1, and the modulus of waterglass is 3.0, and Baume concentration is 48, and adopts 5 ‰ liquor potassic permanganate adding passivation.The welding rod powder for preparing is joined in the mixer, at first be dry mixed 25 minutes, then add waterglass and stirred 30 minutes, even mixed powder is taken out, adopt 45 tons of electrode extrusion presses to make welding rod.The welding rod drying temperature process is: 35 ℃ of insulations of low temperature 3 hours, 100 ℃ of insulations of middle temperature 1.5 hours, 400 ℃ of insulations of high temperature 1.5 hours.Deposited metal hardness HRC55～56.
Embodiment 2
Specifically consisting of of electrode coating: 40 kilograms in marble, 20 kilograms in fluorite, 5 kilograms of quartz sands, 2 kilograms of titanium dioxides, 3 kilograms of ferrosilicon powders of 45# atomizing, 6 kilograms in Ti powder, 3 kilograms of manganese metals, 16 kilograms of high carbon ferro-chromes, FeMo60-A5 kilogram, 1 kilogram of 7 kilograms of FeV50-A, FeSiRE23,1.5 kilograms of nickel powders.Core wire adopts the H08E electrode wire, and binding agent adopts the waterglass of potassium sodium 3:1, and the modulus of waterglass is 3.0, and Baume concentration is 48, and adopts 5 ‰ liquor potassic permanganate adding passivation.The welding rod powder for preparing is joined in the mixer, at first be dry mixed 25 minutes, then add waterglass and stirred 30 minutes, even mixed powder is taken out, adopt 45 tons of electrode extrusion presses to make welding rod.The welding rod drying temperature process is: 35 ℃ of insulations of low temperature 3 hours, 100 ℃ of insulations of middle temperature 1.5 hours, 400 ℃ of insulations of high temperature 1.5 hours.Deposited metal hardness HRC56～57.
Embodiment 3
Specifically consisting of of electrode coating: 50 kilograms in marble, 35 kilograms in fluorite, 7 kilograms of quartz sands, 4 kilograms of titanium dioxides, 3 kilograms of ferrosilicon powders of 45# atomizing, 10 kilograms in Ti powder, 5 kilograms of manganese metals, 21 kilograms of high carbon ferro-chromes, 8 kilograms of 6 kilograms of FeMo60-A, FeV50-A, 1 kilogram of FeSiRE23,2 kilograms of nickel powders.Core wire adopts the H08E electrode wire, and binding agent adopts the waterglass of potassium sodium 3:1, and the modulus of waterglass is 3.0, and Baume concentration is 48, and adopts 5 ‰ liquor potassic permanganate adding passivation.The welding rod powder for preparing is joined in the mixer, at first be dry mixed 25 minutes, then add waterglass and stirred 30 minutes, even mixed powder is taken out, adopt 45 tons of electrode extrusion presses to make welding rod.The welding rod drying temperature process is: 35 ℃ of insulations of low temperature 3 hours, 100 ℃ of insulations of middle temperature 1.5 hours, 400 ℃ of insulations of high temperature 1.5 hours.Deposited metal hardness HRC57～61.
Application case 1
The Kazakhstan flies the REPAIR WELDING of automobile panel blanking die cutting edge, and the blanking die material is T10, and hardness is HRC57 after quenching, and tipping often occurs in the use, adopts respectively the cutting edge reparation welding rod D322 of welding rod of the present invention and market sale to carry out Experimental Comparison.
Adopt the welding procedure of welding rod of the present invention: before the welding, first the die point place is trimmed to the groove of 4mm * 4mm with electric angle grinder, groove both sides 10mm mother metal is polished metallic luster, in the groove oil and rust must not be arranged, the diameter 4.0mm of welding rod, electric current 130～150A, welding rod dc reverse connection, mother metal directly welds without preheating, weld 2 layers, postwelding air cooling, weld seam flawless, deposited metal hardness HRC58, die life is than original mould Service life 30% after repairing.
D322 welding rod welding procedure: before the welding, first the die point place is trimmed to the groove of 4mm * 4mm with electric angle grinder, groove both sides 10mm mother metal is polished metallic luster, in the groove oil and rust must not be arranged, the diameter 4.0mm of welding rod, electric current 130～150A, welding rod dc reverse connection.(1) at first, mother metal directly welds without preheating, welds 2 layers, and many Cracks appear in postwelding air cooling, cutting edge.(2) mother metal is preheating to 350 ℃, welds 2 layers, after the welding mould is covered slow cooling with asbestos, cutting edge does not have crackle, deposited metal hardness HRC51, and lower hardness does not adopt.
This welding rod and D322 contrast, it is simple to have welding procedure, and mother metal is without preheating before the weldering, and the postwelding deposited metal does not have crackle, and hardness 〉=HRC55 improves 30% service life, can satisfy the cutting edge service condition.
Application case 2
Plate shearing machine blade cutting edge REPAIR WELDING.Plate shearing machine blade material is Cr12MoV, hardness HRC58, and length 300mm can shear the following steel plate that arrives of 8mm, produces tipping in the use procedure, adopts the reparation of this welding rod.Renovation technique is as follows: core diameter 3.2mm, and welding current 115～125A partly repairs into 3mm * 3mm groove with blade cutting edge before the welding, and not preheating of mother metal is directly welded, and welds 2 layers, postwelding air cooling, weld seam flawless, deposited metal hardness HRC60.
Above-described embodiment is described preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. welding rod that is used for cold-work die cutting edge reparation usefulness, coating outside core wire forms by core wire and extrusion, it is characterized in that described coating contains the component of following weight portion: 0.5～2 part of 40～50 parts in marble, 20～35 parts in fluorite, 5～7 parts of quartz sands, 1～4 part of titanium dioxide, 3～5 parts of ferrosilicon powders of 45# atomizing, 6～10 parts in Ti powder, 3～5 parts of manganese metals, 15～25 parts of high carbon ferro-chromes, 6～8 parts of 4～6 parts of FeMo60-A, FeV50-A, FeSiRE231～2 part, nickel powder.
2. welding rod according to claim 1 is characterized in that: described core wire employing H08E electrode wire.
3. welding rod according to claim 1 is characterized in that: the hardness with this welding rod welding deposited metal is HRC55～61.
4. the method for preparing the described welding rod of claim 1, it is characterized in that: the welding rod powder for preparing by weight claimed in claim 1 is joined in the mixer, at first be dry mixed 25 minutes, then adding binding agent stirred 30 minutes, even mixed powder is taken out, adopt electrode extrusion press to make welding rod, with welding rod drying.
5. method according to claim 4 is characterized in that, described welding rod drying temperature process is: 35 ℃ of insulations of low temperature 3 hours, 100 ℃ of insulations of middle temperature 1.5 hours, 400 ℃ of insulations of high temperature 1.5 hours.
6. method according to claim 4 is characterized in that: described binding agent is that the liquor potassic permanganate that adds 5 ‰ percetages by weight in the waterglass of potassium sodium 3:1 obtains, and the modulus of waterglass is 3.0, and Baume concentration is 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486635.8A CN102974959B (en) | 2012-11-26 | 2012-11-26 | Welding rod for repairing cold working die cutting edge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210486635.8A CN102974959B (en) | 2012-11-26 | 2012-11-26 | Welding rod for repairing cold working die cutting edge |
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| CN102974959A true CN102974959A (en) | 2013-03-20 |
| CN102974959B CN102974959B (en) | 2015-01-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736026A (en) * | 2016-12-15 | 2017-05-31 | 昆山京群焊材科技有限公司 | A kind of direct built-up welding hardening welding rod of cast iron stamping mold |
| CN111390416A (en) * | 2020-03-25 | 2020-07-10 | 广汽本田汽车有限公司 | Welding method for cutting edge of automobile die |
Citations (6)
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| CN1152491A (en) * | 1995-12-18 | 1997-06-25 | 邢台神光焊接有限公司 | Surfacing welding electrode for roller |
| JP2003146697A (en) * | 2001-11-13 | 2003-05-21 | Sanwa Denzai:Kk | Dielectric composition |
| CN101406996A (en) * | 2008-10-22 | 2009-04-15 | 燕山大学 | Surfacing electrode for composite duplex metal cold cutting edge green refabrication technique |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
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| CN102407413A (en) * | 2010-09-26 | 2012-04-11 | 上海市紧固件和焊接材料技术研究所 | Surfacing welding electrode for sealing face of valve |
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- 2012-11-26 CN CN201210486635.8A patent/CN102974959B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| CN1152491A (en) * | 1995-12-18 | 1997-06-25 | 邢台神光焊接有限公司 | Surfacing welding electrode for roller |
| JP2003146697A (en) * | 2001-11-13 | 2003-05-21 | Sanwa Denzai:Kk | Dielectric composition |
| CN101406996A (en) * | 2008-10-22 | 2009-04-15 | 燕山大学 | Surfacing electrode for composite duplex metal cold cutting edge green refabrication technique |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
| CN102407413A (en) * | 2010-09-26 | 2012-04-11 | 上海市紧固件和焊接材料技术研究所 | Surfacing welding electrode for sealing face of valve |
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Non-Patent Citations (1)
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| 刘耀东等: "热作模具钢堆焊焊条的研制", 《电焊机》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736026A (en) * | 2016-12-15 | 2017-05-31 | 昆山京群焊材科技有限公司 | A kind of direct built-up welding hardening welding rod of cast iron stamping mold |
| CN111390416A (en) * | 2020-03-25 | 2020-07-10 | 广汽本田汽车有限公司 | Welding method for cutting edge of automobile die |
| CN111390416B (en) * | 2020-03-25 | 2021-02-23 | 广汽本田汽车有限公司 | Welding method for cutting edge of automobile die |
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| CN102974959B (en) | 2015-01-07 |
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Granted publication date: 20150107 Termination date: 20171126 |