CN101116932A - Wolfram carbine abrasion-proof core deposit welding rod - Google Patents
Wolfram carbine abrasion-proof core deposit welding rod Download PDFInfo
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Abstract
A tungsten carbide wear resistant drug core resurfacing welding rod comprises a drug core and a steel sheet for wrapping the drug core. A drug fur powder material is coated outside the steel sheet. The weights of the drug core, the steel sheet and the drug fur powder material separately in the total weight of the welding rod is that is the drug core is ranged from 32 percent to 36 percent, the steel sheet is ranged from 32 percent to 36 percent, the drug fur powder material is ranged from 30 percent to 34 percent, the drug core tungsten carbide is ranged from 96 percent to 98 percent and nickel is ranged from 2 percent to 4 percent. The weight of drug fur is distributed according to percent that marble is ranged from 33 percent to 35 percent, fluorite is ranged from 35 percent to 38 percent, tungsten carbide is ranged from 10 percent to 14 percent, high carbon ferromanganese is ranged from 2 percent to 6 percent, titanium iron is ranged from 8 percent to12 percent, rare earths silicon is ranged from 1 percent to 3 percent and calcined soda is ranged from 1 percent to 3 percent. The resistant alloy is equably bridged to the resurfacing welding metal through welding core. The invention has the advantages that the welding technics performance is good and the welding line ingredient is even. The connecting strength is high, thereby, avoiding gas hole and flaw and with good detachability. The invention has a higher hardness and wear resistant performance. The making technics is simple and the producing cost is lower. The welding rod structure is novel and the welding shape is good to suit in full position resurfacing welding of wearing parts in the engineering machinery in metallurgy and mine.
Description
Affiliated technical field
The present invention relates to the welding rod that metal solder is used, be meant a kind of Wolfram carbine abrasion-proof core deposit welding rod that is suitable for the component of machine surface peening particularly.
Background technology
In engineering machinery such as metallurgy, mine, water conservancy dredging, extensively adopt the mode of built-up welding that its consumable accessory is carried out surface treatment at present.Basically adopt normal steel casting spare as the 35SiMn steel as the crucial consumable accessory of the domestic dredger overwhelming majority, the ubiquity serious wear, service life is short, maintenance is frequent, the maintenance technology level is hanged down the problems such as resource utilization is low that reach, and this has become the bottleneck that hinders the progress of dredging equipment technology.Chinese patent publication number: CN 1562550A, open day; On January 12nd, 2005, denomination of invention: " a kind of wear-resisting tubular tungsten carbide welding rod ", it comprises welded tube and filler, described filler comprises the cemented tungsten carbide particles of 60-95%, the casting carbon tungsten carbide particle of 0-35%, the alloyed powder of 2-6%, the organic resin of 2-6%, and wherein alloyed powder is Cr7-40%, Si4-14%, B2.5-9%, MnO-15, Ni surplus.Adopt the fusing point that can effectively reduce bonded metal behind the above-mentioned alloyed powder prescription, reduce scaling loss, the overall wear resistance of wearable overlay can be improved abrasion resistant particles.But this welding rod exists composition of weld line even inadequately, easily produces pore or crackle, and deposited metal such as easily peels off at defective, and welding technological properties is still waiting to improve.
Summary of the invention
The objective of the invention is at existing surfacing welding composition of weld line evenly inadequately, easily produce pore or crackle, deposited metal such as easily peels off at defective, and it is even to propose a kind of seam organization composition, hardness height, the Wolfram carbine abrasion-proof core deposit welding rod that wearability is good.It has better cracking resistance and deslag performance, and welding technological properties is good.
Technical solution of the present invention is: a kind of Wolfram carbine abrasion-proof core deposit welding rod, the sheetmetal that comprises medicine core and parcel medicine core, outside sheetmetal, be coated with the coating powder, medicine core, sheetmetal and coating powder account for welding rod gross weight % respectively: medicine core 32～36, sheetmetal 32～36, coating powder 30～34, wherein:
The composition of medicine core and weight % are: tungsten carbide: 96～98, and nickel 2～4;
The composition of coating powder and weight % are: marble 33～35, fluorite 35～38, tungsten carbide 10～14, high carbon ferromanganese 2～6, ferrotianium 8～12, rare earth silicon 1～3, soda ash 1～3.
The composition of coating powder of the present invention and weight % can also be marble 34, fluorite 37, tungsten carbide 12, high carbon ferromanganese 4, ferrotianium 10, rare earth silicon 1.5%, soda ash 1.5%.
The adhesive of coating powder of the present invention is a waterglass.
The filling rate of medicine core is 40～50% in the sheetmetal of the present invention.
Sheetmetal employing thickness of the present invention is that 0.5～1 millimeter H08A steel band is made.
The external diameter of sheetmetal of the present invention is 3.2～5.0 millimeters, and the external diameter behind the coating coating powder is the 5.2-8.0 millimeter.
The mentality of designing of medicine core surfacing welding rod of the present invention is as follows: alloys such as tungsten carbide, nickel are involved in the steel band, through draw dial and chopping after, be coated with medicinal powder on its surface and constitute the powdery coating.Because the carbide alloy element of surfacing welding of the present invention concentrates in the core wire, the powdery coating of outside mainly plays gas making, slag making, OR balance and transition portion alloy.Like this, the deposited metal of welding rod of the present invention not only can reach very high hardness and good wear resistance energy, also has good welding technological properties simultaneously, appearance of weld is attractive in appearance, even tissue, be difficult for producing pore, crackle, also overcome the in use flaky defective of other types welding rod deposited metal.
The invention has the beneficial effects as follows: 1, antifriction alloy tungsten carbide, nickel are concentrated on the centre of welding rod by sheetmetal, in welding process, allow antifriction alloy pass through the core wire even transition in deposited metal, utilization to antifriction alloy is more reasonable, with directly passing through coating transitional face ratio, wear-resisting better effects if, composition of weld line is even, the transfer coefficient height.2, outside sheetmetal, apply the coating powder, contain part transition alloy in the coating powder, guarantee that welding rod has good welding technological properties, bonding strength is higher, is difficult for producing pore and crackle, the removability of slag is good, can guarantee that deposited metal has higher hardness and anti-wear performance.3, manufacture craft is easy, and production cost is lower.4, the welding rod novel structure, the good moldability of welding is suitable for the full position built-up welding welding of various engineering machinery consumable accessorys such as metallurgy, mine.
The specific embodiment
The present invention is described in further detail below in conjunction with the specific embodiment:
A kind of Wolfram carbine abrasion-proof core deposit welding rod comprises medicine core and the sheetmetal that wraps up the medicine core, is coated with the coating powder outside sheetmetal, medicine core, sheetmetal and coating powder account for welding rod gross weight % respectively: medicine core 32～36, sheetmetal 32～36, coating powder 30～34, wherein:
The composition of medicine core and weight % are: tungsten carbide 96～98, nickel 2～4;
The composition of coating powder and weight % are: marble 33～35, fluorite 35～38, tungsten carbide 10～14, high carbon ferromanganese 2～6, ferrotianium 8～12, rare earth silicon 1～3, soda ash 1～3.Raw material in the described coating powder all can be buied on market, and the adhesive of described coating powder is a waterglass.
The filling rate of medicine core is 40～50% in the described sheetmetal.Described sheetmetal employing thickness is that 0.5～1 millimeter H08A steel band is made.
The external diameter of described sheetmetal is 3.2～5.0 millimeters, and the external diameter behind the coating coating powder is the 5.2-8.0 millimeter.
Embodiment 1: the components of welding electrode design
1.1 core wire composition
Welding rod mainly plays transition metal and alloy, so the powder in the core wire mainly is antifriction alloy tungsten carbide (WC), nickel (Ni), antifriction alloy is by the core wire transition, and it is even to have a composition of weld line, the transfer coefficient advantages of higher, and concrete composition is as follows:
Tungsten carbide (WC) 98%, nickel (Ni) 2%.
The steel band chemical composition should satisfy the requirement of GB/T3429, and strip material adopts H08A, size: thick 0.9 millimeter, wide 14 millimeters.
Core wire filling rate: 45～47%.
1.2 compositions of surfacing metal
Guarantee that welding rod has good welding technological properties, seam organization is even, be difficult for producing weld defects such as pore and crackle that possessing the transition portion alloy is the function of coating in this welding rod,, adopt basic slag system so should satisfy above-mentioned requirements in its composition design.
The design of coating powder composition is as follows:
Marble 34%, fluorite 37%, tungsten carbide 12%, high carbon ferromanganese 4%, ferrotianium 10%, rare earth silicon 1.5%, soda ash 1.5%.
Welding rod external diameter: 6.3 millimeters of Φ 6.2-Φ.
Embodiment 2: the welding rod preparation
2.1 core wire is made
Press the design of embodiment 1, with tungsten carbide powder, abundant mixing is made the medicine core after the alloy weighings such as nickel powder.On the flux-cored wire manufacturing equipment, the H08A steel band of 0.9 millimeters thick, 14 mm wides is U type → dosing core powder → seal into O type → rolling tube reducing → draw and dial tube reducing → spiral through putting band uncoiling → roll, pull into the welding wire of 4.0 millimeters of Φ at last, roll in the process, must measure the actual weight activity coefficient (being the core wire filling rate) of core wire, the core wire filling rate is controlled at 45～47%.On filament cutter, welding wire is cut into the core wire of 400 millimeters long then.
2.2 welding rod is made
Will be by the embodiment design with the abundant mixing of coating powder weighing, add waterglass by 20～30% of coating powder weight again and be stirred into the mud shape, on the hydraulic type electrode extrusion press, core wire is applied mud shape coating powder, finish the making of welding rod then by operations such as oven dry, packings.
Embodiment 3: the welding rod assessment of performance
Be the application performance of examination welding rod, make medicine core surfacing welding rod of the present invention earlier, and examine from the welding technological properties and mechanical property two broad aspect of welding rod.
3.1 welding technological properties
The welding technological properties of examination welding rod mainly welds on material object, selects rational welding parameter and technology, is evaluated from the following aspects at last, and its result of appraisal see Table 1.
Table 1: the welding technological properties of welding rod
| Sequence number | Welding technological properties | Appraisal result |
| 1 | Arc stability | Very |
| 2 | The built-up welding moulding | Very |
| 3 | Crack resistance | Excellent |
| 4 | The cracking resistance stomata sensitivity | Very |
| 5 | The removability of slag | Excellent |
3.2 the serviceability of welding rod
The serviceability of examination welding rod waits from the hardness of the chemical composition of deposited metal, overlay cladding and wearability and evaluates.Press the step of embodiment 1 and embodiment 2 and make welding rod, as sample 1.The deposited metal chemical composition of welding rod sees Table 2.
Table 2: deposited metal chemical composition (%)
| Test piece number (Test pc No.) | C | Si | Mn | W | Ni |
| 1 | 1.7 | 0.36 | 1.19 | 28.25 | 0.24 |
The surfacing hardness test sees Table 3:
Table 3: surfacing hardness value
| Test piece number (Test pc No.) | Hardness test value (HRC) | Mean value |
| 1 | 63.5 64.6 65.0 63.9 64.8 64.2 | 64.3 |
The wearability of welding rod compares test with 35SiMn steel and sample 1 on abrasion tester, draw its relative wear resistance, and it the results are shown in Table 4:
Table 4: the wearability unit of welding rod overlay cladding: doubly
| Test piece number (Test pc No.) | Relative wear resistance (with respect to the 35SiMn steel) |
| 1 | 5.28 |
Surfacing welding of the present invention is through the integration test of 35SiMn steel consumable accessory surface overlaying on the dredger: reduce in the digging tool overall weight under 26% the situation, the service efficiency of its consumable accessory has but risen 19.9%, simultaneously because the surface overlaying easy to wear on consumable accessory, make the wearability of its consumable accessory improve several times, improved the anti-wear performance of digging tool, the frequency that consumable accessory is changed in the work reduces, prolonged the cycle of consumable accessory continuous firing, saved the replacing time, improve labor productivity greatly, also improved economic results in society to a great extent.Go for being subjected to the hardfacing of high-wearing machine components such as rock, silt to weld.
Claims (6)
1. a Wolfram carbine abrasion-proof core deposit welding rod comprises medicine core and the sheetmetal that wraps up the medicine core, it is characterized in that: be coated with the coating powder outside sheetmetal, medicine core, sheetmetal and coating powder account for welding rod gross weight % respectively: medicine core 32～36, sheetmetal 32～36, coating powder 30～34, wherein:
The composition of medicine core and weight % are: tungsten carbide 96～98, nickel 2～4;
The composition of coating powder and weight % are: marble 33～35, fluorite 35～38, tungsten carbide 10～14, high carbon ferromanganese 2～6, ferrotianium 8～12, rare earth silicon 1～3, soda ash 1～3.
2. a kind of Wolfram carbine abrasion-proof core deposit welding rod according to claim 1 is characterized in that: the composition of described coating powder and weight % are: marble 34, fluorite 37, tungsten carbide 12, high carbon ferromanganese 4, ferrotianium 10, rare earth silicon 1.5%, soda ash 1.5%.
3. a kind of Wolfram carbine abrasion-proof core deposit welding rod according to claim 1 and 2 is characterized in that: the adhesive of described coating powder is a waterglass.
4. a kind of Wolfram carbine abrasion-proof core deposit welding rod according to claim 1 is characterized in that: the filling rate of medicine core is 40-50% in the described sheetmetal.
5. a kind of Wolfram carbine abrasion-proof core deposit welding rod according to claim 1 is characterized in that: the H08A steel band that described sheetmetal employing thickness is the 0.5-1 millimeter is made.
6. a kind of Wolfram carbine abrasion-proof core deposit welding rod according to claim 1 is characterized in that: the external diameter of described sheetmetal is the 3.2-5.0 millimeter, and the external diameter behind the coating coating powder is the 5.2-8.0 millimeter.
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| CN102434113A (en) * | 2011-12-30 | 2012-05-02 | 苏州新锐工程工具有限公司 | Front connector of high air-pressure down-the-hole hammer |
| CN106041370A (en) * | 2016-06-25 | 2016-10-26 | 袁春华 | Preparation method of hardfacing electrode |
| CN106736004A (en) * | 2016-12-22 | 2017-05-31 | 中冶建筑研究总院有限公司 | The resurfacing welding material and technique of a kind of composite manufacturing by hard surfacing blast furnace iron tapping hole drill |
| CN109079365A (en) * | 2018-08-29 | 2018-12-25 | 李少伟 | A kind of wiring board electronics scaling powder and preparation method thereof |
| CN110026706A (en) * | 2019-03-20 | 2019-07-19 | 江苏孚尔姆焊业股份有限公司 | Oil drill rocker head wear-resisting welding wire with flux core and its manufacturing method |
| CN112222670A (en) * | 2020-10-12 | 2021-01-15 | 广州鑫钻新材料科技开发有限公司 | High-wear-resistance flux-cored welding electrode and preparation method thereof |
| CN112975194A (en) * | 2021-02-09 | 2021-06-18 | 天津市金桥焊材集团股份有限公司 | Low-yield-ratio high-strength weathering resistant steel welding rod |
| CN113967809A (en) * | 2021-10-08 | 2022-01-25 | 广州鑫钻新材料科技开发有限公司 | Iron-nickel base alloy flux-cored welding electrode and preparation method thereof |
| CN113977135A (en) * | 2021-11-22 | 2022-01-28 | 郑州大学 | Iron-based amorphous flux-cored welding rod for surfacing anti-crack and wear-resistant alloy on surface of squeeze roller/grinding roller |
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| JP2002263883A (en) * | 2001-03-13 | 2002-09-17 | Nkk Corp | Coated electrode for low alloy heat resistance steel |
| CN2600211Y (en) * | 2002-08-12 | 2004-01-21 | 雷廷阳 | Modified tubular granular tungsten carbide welding rod |
| CN2675322Y (en) * | 2004-02-03 | 2005-02-02 | 四川石油管理局成都总机械厂 | Double tube alloy surfacing electrode |
| CN100343008C (en) * | 2005-07-06 | 2007-10-17 | 湘潭大学 | High chromium rust free, wear resistance cored welding wire |
| US8669491B2 (en) * | 2006-02-16 | 2014-03-11 | Ravi Menon | Hard-facing alloys having improved crack resistance |
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Cited By (13)
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| CN102434113A (en) * | 2011-12-30 | 2012-05-02 | 苏州新锐工程工具有限公司 | Front connector of high air-pressure down-the-hole hammer |
| CN106041370A (en) * | 2016-06-25 | 2016-10-26 | 袁春华 | Preparation method of hardfacing electrode |
| CN106736004A (en) * | 2016-12-22 | 2017-05-31 | 中冶建筑研究总院有限公司 | The resurfacing welding material and technique of a kind of composite manufacturing by hard surfacing blast furnace iron tapping hole drill |
| CN106736004B (en) * | 2016-12-22 | 2019-10-25 | 中冶建筑研究总院有限公司 | A kind of resurfacing welding material and technique of composite manufacturing by hard surfacing blast furnace iron tapping hole drill |
| CN109079365A (en) * | 2018-08-29 | 2018-12-25 | 李少伟 | A kind of wiring board electronics scaling powder and preparation method thereof |
| CN110026706B (en) * | 2019-03-20 | 2021-05-28 | 江苏孚尔姆焊业股份有限公司 | Wear-resistant flux-cored wire for oil drill pipe head and manufacturing method thereof |
| CN110026706A (en) * | 2019-03-20 | 2019-07-19 | 江苏孚尔姆焊业股份有限公司 | Oil drill rocker head wear-resisting welding wire with flux core and its manufacturing method |
| CN112222670A (en) * | 2020-10-12 | 2021-01-15 | 广州鑫钻新材料科技开发有限公司 | High-wear-resistance flux-cored welding electrode and preparation method thereof |
| CN112975194A (en) * | 2021-02-09 | 2021-06-18 | 天津市金桥焊材集团股份有限公司 | Low-yield-ratio high-strength weathering resistant steel welding rod |
| CN113967809A (en) * | 2021-10-08 | 2022-01-25 | 广州鑫钻新材料科技开发有限公司 | Iron-nickel base alloy flux-cored welding electrode and preparation method thereof |
| CN113967809B (en) * | 2021-10-08 | 2022-10-14 | 广州鑫钻新材料科技开发有限公司 | Iron-nickel base alloy flux-cored welding electrode and preparation method thereof |
| CN113977135A (en) * | 2021-11-22 | 2022-01-28 | 郑州大学 | Iron-based amorphous flux-cored welding rod for surfacing anti-crack and wear-resistant alloy on surface of squeeze roller/grinding roller |
| CN113977135B (en) * | 2021-11-22 | 2023-01-13 | 郑州大学 | Iron-based amorphous flux-cored welding rod for surfacing anti-crack and wear-resistant alloy on surface of squeeze roller/grinding roller |
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