CN107042369A - Flux-cored wire granule modified medicinal powder of fine rare earth and preparation method thereof - Google Patents
Flux-cored wire granule modified medicinal powder of fine rare earth and preparation method thereof Download PDFInfo
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- CN107042369A CN107042369A CN201610928420.5A CN201610928420A CN107042369A CN 107042369 A CN107042369 A CN 107042369A CN 201610928420 A CN201610928420 A CN 201610928420A CN 107042369 A CN107042369 A CN 107042369A
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- powder
- rare earth
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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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
A kind of flux-cored wire granule modified medicinal powder of fine rare earth and preparation method thereof, it is characterized in that：The flux-cored wire is made up of with the granule modified medicinal powder of fine rare earth two kinds of components, and one kind is conventional medicinal powder（It is generally mixed by the alloyed powders such as iron powder, aluminium powder, magnesium powder, titanium-iron powder, ferro-boron powder and ground-slag）, another is the fine rare earth powder that average grain diameter is not more than 10 microns；Wherein, fine rare earth powder accounts for the 0.5 5% of the granule modified medicinal powder total mass fraction of fine rare earth, and fine rare earth powder is only combined with alloyed powder in conventional medicinal powder with mechanical alloying and mechanical cladding form.The present invention is realized to be modified with fine rare earth particle to flux-cored wire medication powder, can be given full play to active rare-earth effect and the synergy of its small-size effect such as nano effect etc. that fine rare earth particle has, be significantly improved the performance of flux-cored wire.
Description
Technical field
The invention belongs to field of welding material, be related to a kind of flux-cored wire, especially a kind of flux-cored wire medication powder and its
Preparation method, specifically a kind of flux-cored wire granule modified medicinal powder of fine rare earth and preparation method thereof.
Background technology
Flux-cored wire is bright spot prominent during world's wlding develops, and is the state-of-the-art welding material of forth generation, has and it
The unrivaled advantage of its welding material：High-quality, high efficiency, easily realizes semi-automation, automates and intelligent welding, save
Cost.Since 1990s, domestic shipbuilding industry, metallurgical construction etc. start batch and use flux-cored wire.Needed in market
Under the stimulation asked, welding circle of the country has started rapidly flux-cored wire and has developed heat.By the arduous of flux-cored wire industrial circle more than 30 years
Effort, domestic flux-cored wire either has significant progress in terms of the kind or in terms of production capacity, but allow not be with avoiding
There is no small gap in China more Japanese, U.S. and South Korea etc. on high-end flux-cored wire.
Flux-cored wire is made up of outside foreskin and internal medicinal powder, its traditional Chinese medicine powder be determine one of its quality it is important because
Element.In recent years, the concern that rare earth composition causes industry is introduced in medicinal powder.Rare earth oxide is added in flux-cored wire medicinal powder
Or containing rare earth element alloy, can preferably improve overlay cladding wearability（Such as CN201310174589.2）, welding seam toughness（Such as
CN201410673410.2）, etc..However, by optimizing rare earth composition and its content and then realizing that flux-cored wire is modified, it is modified
Effect certainly will have a limit.According to the inventors knowledge, although various rare earth modified flux-cored wires show good work(
Energy feature, but its performance not yet reaches the level of high-end flux-cored wire in the world.With reference to the relevant micro-nano composite granule of our early stages
The correlative study of aspect（Fine modified particles are introduced in micro-powder by intermediate of fine particle slurry, such as
CN201310006002.7 etc.）, we have attempted to introduce ceria nanoparticles in flux-cored wire medication powder in this way, with
Phase plays active rare-earth effect and the synergy of nano effect specific to nano rare earth particle, and then realizes in optimizing components
On the basis of further weld seam microstructure is modified.Unfortunately, its not only fall flat and also due to
Medicinal powder causes not enough flux-cored wire filling rate, welding forming variation, postwelding to take off slag difficulty etc. one and be by the significantly factor such as refinement
Row problem.It can be seen that, it there is no method to realize at present and flux-cored wire medication powder be modified with fine rare earth particle, and then constrain tool
There is application of the fine rare earth particle of multi-functional modified synergic effect in flux-cored wire medication powder, me is constrained to a certain extent
The development of the high-end flux-cored wire of state.
The content of the invention
The purpose of the present invention is for " there is no method to realize at present to change flux-cored wire medication powder with fine rare earth particle
Property, and then constrain application of the fine rare earth particle with the effect of multi-functional modified synergic in flux-cored wire medication powder "
Problem, invents a kind of flux-cored wire granule modified medicinal powder of fine rare earth and preparation method thereof.
One of technical scheme is：
A kind of flux-cored wire granule modified medicinal powder of fine rare earth, it is characterized in that：It is made up of two kinds of components, and a kind of component is normal
Medicinal powder is advised, another is that component is the fine rare earth powder that average grain diameter is not more than 10 microns；Wherein, fine rare earth powder accounts for gross mass
The 0.5-5% of fraction, and fine rare earth powder is only compound with mechanical alloying and mechanical cladding form with the alloyed powder in conventional medicinal powder
Form；Described conventional medicinal powder is mixed by alloyed powder and ground-slag, and alloyed powder includes iron powder, aluminium powder, magnesium powder, titanium-iron powder and boron
Iron powder.
The fine rare earth powder, can be rareearth oxidate powder or containing one kind in rare earth alloy powder or several groups
Close, preferably single rare earth oxidate powder.
The particle diameter of the fine rare earth powder is preferably 30-50 nanometers.
The two of technical scheme are：
The preparation method of a kind of flux-cored wire granule modified medicinal powder of fine rare earth, it is characterized in that it comprises the following steps：
Step 1, fine rare earth slurry is made in fine rare earth powder；
Step 2, iron powder, aluminium powder, magnesium powder, titanium-iron powder, ferro-boron powder etc. are mixed in modes such as stirrings, prepares conventional medicinal powder and remove
Alloyed powder outside ground-slag；
Step 3, according to alloyed powder described in fine rare earth slurry described in required proportioning weighing step 1 and step 2, both are subjected to ball
Combined Processing is ground, the granule modified alloyed powder slurry of fine rare earth is obtained；
Step 4, it will be ground after the granule modified alloyed powder slurry drying of fine rare earth, obtain the granule modified alloy of fine rare earth
Powder；
Finally, weigh ground-slag according to required proportioning to mix with the granule modified alloyed powder of fine rare earth described in step 4, you can obtain medicine
The core welding wire granule modified medicinal powder of fine rare earth.
The fine rare earth slurry is preferably suspension.
The ball milling parameter is that rotational speed of ball-mill is 200-300 revs/min, ratio of grinding media to material 5:1-10:1st, Ball-milling Time is 0.25-
0.5 hour.
Beneficial effects of the present invention：
（1）The present invention is realized to be modified with fine rare earth particle to flux-cored wire medication powder, can give full play to fine rare earth
The synergy of active rare-earth effect and its small-size effect such as nano effect that particle has etc., significantly improves medicine core
The performance of welding wire, develops high-end flux-cored wire for China and provides new way.
（2）The present invention creatively proposes fine rare earth particle being first combined what is mixed with ground-slag again with alloyed powder in medicinal powder
Fine rare earth particle in method, the prepared granule modified medicinal powder of fine rare earth is only with alloyed powder in conventional medicinal powder with mechanical alloy
Change and mechanical cladding form is combined, not only ensure that welding usability is such as easy to de- slag but also drastically increases fine rare earth
The effective rate of utilization and modified effect of powder.
（3）Relative to using fine rare earth particle medicinal powder is not added with, using the flux-cored wire of medicinal powder of the present invention preparation
When being welded, its welding forming is greatly improved, be embodied in weld seam integrally narrow, the high step-down of heap, face of weld
Flat smooth etc..
（4）Relative to using for being not added with fine rare earth particle medicinal powder, using the medicine core of medicinal powder of the present invention preparation
When welding wire is welded, its seam organization and performance effectively improve；For example, its heat affected area significantly reduces and wherein fused
Area is only 50% or so when being not added with；For another example, its anti-intensity can be improved about in the case of ensureing that low-temperature impact toughness is not reduced
20% or so.
Brief description of the drawings
Weld seam macro morphology comparison diagram during the flux-cored wire welding plate that Fig. 1 is prepared using two kinds of medicinal powder；
Weld seam cross section pattern comparison diagram during the flux-cored wire welding plate that Fig. 2 is prepared using two kinds of medicinal powder.
Embodiment
As shown in Figure 1-2.
Embodiment one.
A kind of flux-cored wire granule modified medicinal powder of fine rare earth, is made up of two kinds of components, and one kind is conventional medicinal powder（It can join
According to existing flux-cored wire traditional Chinese medicine powder proportioning, such as by account for the iron powder of conventional medicinal powder mass fraction 30%, 3% aluminium powder, 8% magnesium powder,
The alloyed powder that 3% titanium-iron powder and 6% ferro-boron powder are configured to is mixed as ground-slag with accounting for the conventional golden red stone flour of medicinal powder mass fraction 50%
Conjunction is formed, similarly hereinafter）, another is the fine rare earth powder that average grain diameter is not more than 10 microns；Wherein, fine rare earth powder accounts for fine dilute
Soil particle is modified the 0.5-5% of medicinal powder total mass fraction, and fine rare earth powder is only closed with the alloyed powder in conventional medicinal powder with machinery
Aurification and mechanical cladding form are composited.The fine rare earth powder, can be rareearth oxidate powder or containing in rare earth alloy powder
One kind or several combinations, preferably single rare earth oxidate powder.The particle diameter of the fine rare earth powder is preferably that 30-50 receives
Rice.The preparation method of the granule modified medicinal powder of flux-cored wire fine rare earth of the present invention comprises the following steps：
Step 1, fine rare earth slurry, preferably suspension is made in fine rare earth powder；
Step 2, iron powder, aluminium powder, magnesium powder, titanium-iron powder, ferro-boron powder etc. be mixed with obtaining alloyed powder in modes such as stirrings；
Step 3, according to alloyed powder described in fine rare earth slurry described in required proportioning weighing step 1 and step 2, both are subjected to ball
Combined Processing is ground, the granule modified alloyed powder slurry of fine rare earth is obtained；Ball milling parameter be rotational speed of ball-mill be 200-300 revs/min,
Ratio of grinding media to material 5:1-10:1st, Ball-milling Time is 0.25-0.5 hours；
Step 4, it will be ground after the granule modified alloyed powder slurry drying of fine rare earth, obtain the granule modified alloy of fine rare earth
Powder；
Finally, weigh ground-slag according to required proportioning to mix with the granule modified alloyed powder of fine rare earth described in step 4, you can obtain medicine
The core welding wire granule modified medicinal powder of fine rare earth.
Embodiment two.
Particle diameter purchased in market is placed in alcohol water mixed solution for 30-50 nanometers of cerium oxide powder（Absolute ethyl alcohol and deionized water
Volume ratio be 1:1）In, it is prepared into the Oxidized Cerium slurry that solid content is 5%（Suspension）, it is standby；By institute in embodiment one
State proportioning and weigh iron powder, aluminium powder, magnesium powder, titanium-iron powder, ferro-boron powder, be mixed using mechanical agitation methods, prepare conventional medicinal powder
Alloyed powder in addition to ground-slag, it is standby；Weigh the alloy that the Oxidized Cerium slurry containing 0.5g cerium oxide and 49.5g are prepared
Powder, is placed in ball grinder and carries out ball-milling, and ball milling parameter is 300 revs/min, ratio of grinding media to material 10:1st, Ball-milling Time is 0.5
Hour, obtain the granule modified alloyed powder slurry of fine rare earth；It will be ground after the granule modified alloyed powder slurry drying of fine rare earth
Mill, obtains the granule modified alloyed powder of fine rare earth；Finally, 50g rutile is weighed to close as ground-slag and fine rare earth are granule modified
Bronze is closed, you can obtain the flux-cored wire granule modified medicinal powder of fine rare earth.
Flux-cored wire is prepared using the granule modified medicinal powder of above-mentioned fine rare earth, butt welding is carried out to 10 millimeters thick E36 steel plates, its
Welding forming is greatly improved, and is embodied in that weld seam integrally narrows, the high step-down of heap, face of weld is smooth, smooth, have no
Horizontal and vertical welding trace（Fig. 1）.Its cross section is further looked at, its heat affected area significantly reduces and wherein fusion area does not add only
50% or so of added-time（Fig. 2）；In addition, testing its low-temperature impact toughness and tensile strength, find ensureing low-temperature impact toughness not
Its anti-intensity can improve about 20% or so in the case of reduction.Control sample employed in this example, in addition to institute's medication powder is conventional medicinal powder,
Remaining process conditions sample as described in flux-cored wire preparation method and its technological parameter and welding condition with the present embodiment
It is identical.
Embodiment three.
Average grain diameter purchased in market is placed in alcohol water mixed solution for 10 microns of cerium oxide powder（Absolute ethyl alcohol and deionized water
Volume ratio be 1:1）In, the Oxidized Cerium slurry that solid content is 20% is prepared into, it is standby；Matched by described in embodiment one
Iron powder, aluminium powder, magnesium powder, titanium-iron powder, ferro-boron powder are weighed, is mixed using mechanical agitation methods, conventional medicinal powder is prepared and removes ground-slag
Outer alloyed powder, it is standby；The alloyed powder that the Oxidized Cerium slurry containing 5g cerium oxide and 45g are prepared is weighed, is placed on
Ball-milling is carried out in ball grinder, ball milling parameter is 200 revs/min, ratio of grinding media to material 5:1st, Ball-milling Time is 0.25 hour, is obtained micro-
The granule modified alloyed powder slurry of thin rare earth；It will be ground, obtain fine after the granule modified alloyed powder slurry drying of fine rare earth
The granule modified alloyed powder of rare earth；Finally, 50g rutile is weighed to close as ground-slag and the granule modified alloyed powder of fine rare earth, you can
Obtain the flux-cored wire granule modified medicinal powder of fine rare earth.
Flux-cored wire is prepared using the granule modified medicinal powder of above-mentioned fine rare earth, the similar effect of embodiment two is reached.
Example IV.
It is 10% that cerium oxide powder and lanthanum oxide powder that average grain diameter purchased in market is 100 nanometers are prepared into solid content respectively
Fine rare earth slurry, it is standby；Match somebody with somebody by proportioning described in embodiment one or by the composition in medicine core in presently commercially available flux-cored wire
Than weighing iron powder, aluminium powder, magnesium powder, titanium-iron powder and ferro-boron powder, it is mixed using mechanical agitation methods, prepares conventional medicinal powder slagging-off
Alloyed powder outside powder, it is standby；Weigh the conjunction that fine rare earth slurry and 47g containing 1.5g cerium oxide and 1.5g lanthanas are prepared
Bronze, is placed in ball grinder and carries out ball-milling, and ball milling parameter is 250 revs/min, ratio of grinding media to material 7.5:1st, Ball-milling Time is
0.4 hour, obtain the granule modified alloyed powder slurry of fine rare earth；It will be carried out after the granule modified alloyed powder slurry drying of fine rare earth
Grinding, obtains the granule modified alloyed powder of fine rare earth；Finally, 50g rutile is weighed granule modified with fine rare earth as ground-slag
Alloyed powder is closed, you can obtain the flux-cored wire granule modified medicinal powder of fine rare earth.
Flux-cored wire is prepared using the granule modified medicinal powder of above-mentioned fine rare earth, the similar effect of embodiment two is reached.
Above-mentioned only to list the several frequently seen flux-cored wire granule modified medicinal powder of fine rare earth, those skilled in the art can
According to of the present invention with when preparation method, the preferable granule modified medicinal powder of flux-cored wire fine rare earth can be obtained.
Part that the present invention does not relate to is same as the prior art or can be realized using prior art.
Claims (6)
1. a kind of flux-cored wire granule modified medicinal powder of fine rare earth, it is characterized in that：It is made up of two kinds of components, and a kind of component is
Conventional medicinal powder, another is that component is the fine rare earth powder that average grain diameter is not more than 10 microns；Wherein, fine rare earth powder accounts for total matter
The 0.5-5% of fraction is measured, and fine rare earth powder is only answered with the alloyed powder in conventional medicinal powder with mechanical alloying and mechanical cladding form
Conjunction is formed；Described conventional medicinal powder is mixed by alloyed powder and ground-slag, alloyed powder include iron powder, aluminium powder, magnesium powder, titanium-iron powder and
Ferro-boron powder.
2. the flux-cored wire granule modified medicinal powder of fine rare earth according to claim 1, it is characterized in that：The fine rare earth powder
It is single rare earth oxidate powder or containing one kind in rare earth alloy powder or several combinations.
3. the flux-cored wire granule modified medicinal powder of fine rare earth according to claim 1, it is characterized in that：The fine rare earth powder
Particle diameter be 30-50 nanometers.
4. a kind of preparation method of the flux-cored wire granule modified medicinal powder of fine rare earth described in claim 1, it is characterized in that it
Comprise the following steps：
Step 1, fine rare earth slurry is made in fine rare earth powder；
Step 2, iron powder, aluminium powder, magnesium powder, titanium-iron powder and ferro-boron powder are mixed with agitating mode, prepared in conventional medicinal powder
Alloyed powder；
Step 3, according to alloyed powder described in fine rare earth slurry described in required proportioning weighing step 1 and step 2, both are subjected to ball
Combined Processing is ground, the granule modified alloyed powder slurry of fine rare earth is obtained；
Step 4, it will be ground after the granule modified alloyed powder slurry drying of fine rare earth, obtain the granule modified alloy of fine rare earth
Powder；
Finally, weigh ground-slag according to required proportioning to mix with the granule modified alloyed powder of fine rare earth described in step 4, you can obtain medicine
The core welding wire granule modified medicinal powder of fine rare earth.
5. the preparation method of the flux-cored wire granule modified medicinal powder of fine rare earth according to claim 4, it is characterized in that：It is described
Fine rare earth slurry is suspension.
6. the preparation method of the flux-cored wire granule modified medicinal powder of fine rare earth according to claim 4, it is characterized in that：It is described
Ball milling parameter is that rotational speed of ball-mill is 200-300 revs/min, ratio of grinding media to material 5:1-10:1st, Ball-milling Time is 0.25-0.5 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005188A1 (en) * | 2021-07-30 | 2023-02-02 | 江苏大学 | Aluminum alloy flux-cored wire and preparation method therefor |
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Effective date of registration: 20210308 Address after: 225721 Xingda Avenue, Dainan Town, Xinghua City, Taizhou City, Jiangsu Province Patentee after: XINGHUA HUANYU WELDING MATERIAL Co.,Ltd. Address before: 212013 No. 301, Xuefu Road, Zhenjiang, Jiangsu Patentee before: JIANGSU University |
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