CN109940310A - Boiler build-up welding alloy material - Google Patents
Boiler build-up welding alloy material Download PDFInfo
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- CN109940310A CN109940310A CN201910235231.3A CN201910235231A CN109940310A CN 109940310 A CN109940310 A CN 109940310A CN 201910235231 A CN201910235231 A CN 201910235231A CN 109940310 A CN109940310 A CN 109940310A
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Abstract
This case is related to a kind of boiler build-up welding alloy material, including 4~8 parts of molybdenum titanium alloy powder, 1~2 part of silicomangan powder, 0.2~2 part of graphite powder, 0.2~1 part of cerium oxide, 2~4 parts of basic magnesium chloride whisker, 5~8 parts of tungsten carbide powder, 40~50 parts of high carbon ferro-chrome, 8~10 parts of miberal powder, 1~2 part of niobium powder and 1~2 part of nickel powder, surplus is atomized iron powder；The present invention selects different raw material granularity rational gradation compositions, improves the uniformity and density of material after boiler is formed with build-up welding alloy material, and advantageously reduce build-up welding alloy material holds tolerance, the generation of Minute pores when preventing or reducing built-up welding；The generation of bulky grain metallic crystal when the addition of cerium oxide and basic magnesium chloride whisker advantageously reduces built-up welding, promote the uniform generation of fine metal crystal, improve hardness and wearability, HRC60 or more is reached as high as using material pile postwelding macrohardness of the present invention, alloy-layer crackle is less or flawless, and not easily to fall off.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of boiler build-up welding alloy material.
Background technique
Abrasion is one of three big reasons of material damage, in metallurgy, mechanically and electrically some passes in the industries such as power, in equipment
Most of key member is in for a long time with working in the case of impact wear, and the wearability of workpiece, which has become, determines its service life
One of principal element.These wearing pieces are mainly mutually impacted and are rubbed with mineral and sand grains, according to wear parts in the course of work
In the abrasion that is subject to can be classified as abrasive wear, this wear type probably accounts for 50% or more in the industry, for example,
Crusher toothed plate, tup, beater plate；Ball grinding machine lining board, abrading-ball；The middle plate etc. of scrapper conveyor is made in sharp and hard abrasive material
With lower generation plow, roll with crackle and gradually peel off, until part is worn out or be broken due to crack propagation.
Metallurgy and power industry in, usually to use high-temperature boiler, in boiler in use, due to boiler inner wall and pot
The built-in equipment of furnace is in the case where being chronically at high temperature, inner wall and pot of the solid particle of entrained with to boiler in the air-flow in boiler furnace
The built-in equipment of furnace is impacted, and long-time service will cause biggish abrasion；In addition, corroding as sulphur contained in the coal of fuel etc.
Property element can also cause corrosivity to damage in boiler, the boiler of damage will cause the accidents such as booster, when serious as safeguarded not in time
Possibly even lead to the bursting of boilers.
Surface overlaying wear-resistant anticorrosive material is being equipped built in boiler inner wall, boiler, is to improve workpiece service life, to boiler
Carry out the effective ways of repair maintenance.
From the point of view of the research situation of current resurfacing welding material, high-temperature corrosion resistance, high rigidity, the high temperature that can be used for boiler Bead weld repair are resistance to
High-chromium cast iron-type alloy system can be used in mill property hardfacing alloy, since its hardstanding contains a large amount of eutectic carbide M7C3, M23C6
So as to obtain very high hardness, the impact from boiler internal solid fuel particle can be resisted, but high-chromium cast iron-type closes
The toughness of gold is poor, and high temperature corrosion is general, can crack under frequent blowing out, the impact of low-temperature solid fuel particle, comprehensive
It is bad to close performance.
In view of this, it is necessary to propose it is a kind of suitable for boiler, can corrosion-resistant at high temperature, the small microparticle punching of resistance to solid
Hit the build-up welding alloy material of abrasion.
Summary of the invention
The object of the present invention is to provide density after a kind of molding is larger, narrow-minded boiler build-up welding alloy material is held.
It is a further object to provide it is a kind of can corrosion-resistant and dust washes away at high temperature boiler heap soldering
Golden material.
In order to solve the above-mentioned technical problem, the invention discloses a kind of boiler build-up welding alloy materials, including molybdenum titanium alloy
4~8 parts of powder, 1~2 part of silicomangan powder, 0.2~2 part of graphite powder, 0.2~1 part of cerium oxide, 2~4 parts of basic magnesium chloride whisker,
5~8 parts of tungsten carbide powder, 40~50 parts of high carbon ferro-chrome, 8~10 parts of miberal powder, 1~2 part of niobium powder and 1~2 part of nickel powder, surplus are atomization
Iron powder；
Preferably, in each dusty raw materials, 100 μm of partial size or more account for 25~30%, and 40 μm~100 μm of partial size account for 45
~50%, partial size accounts for 20~30% less than 40 μm.
Preferably, the partial size is no more than 5% less than 1 μm.
Preferably, the miberal powder include artificial 20~30wt% of zircon flour, 30~40wt% of Fluorspar Powder, marble powder 30~
50wt%。
Preferably, the molybdenum titanium alloy powder is Mo-0.5Ti alloy.
Preferably, the atomized iron powder is water-atomized iron powder.
By 4~8 parts of molybdenum titanium alloy powder, 1~2 part of silicomangan powder, 0.2~2 part of graphite powder, 0.2~1 part of cerium oxide, alkali
2~4 parts of formula magnesium chloride whisker, 5~8 parts of tungsten carbide powder, 40~50 parts of high carbon ferro-chrome, 8~10 parts of miberal powder, 1~2 part of niobium powder and nickel
1~2 part of powder, surplus is the raw material of atomized iron powder, is sufficiently mixed uniformly in proportion, 0.5~1h is dried under the conditions of 80~100 DEG C,
It is placed in roll-forming in mold, 3-4h is kept the temperature under the conditions of being warming up to 200~300 DEG C, it is cooling after roll-in again.
The pressure of the roll-forming is not less than 50kg/cm3.Higher roll-forming pressure helps to improve hardfacing alloy
The compactness of material improves surfacing layer quality when built-up welding.
Boiler build-up welding alloy material of the invention, has at least the following advantages:
1. select different raw material granularity rational gradation composition, improve after boiler is formed with build-up welding alloy material the uniformity of material and
Density, advantageously reduce build-up welding alloy material holds tolerance, the generation of Minute pores when preventing or reducing built-up welding.
The generation of bulky grain metallic crystal when 2. the addition of cerium oxide and basic magnesium chloride whisker advantageously reduces built-up welding,
Promote the uniform generation of fine metal crystal, hardness and wearability is improved, using material pile postwelding macrohardness highest of the present invention
Up to HRC60 or more, alloy-layer crackle is less or flawless, and not easily to fall off.
3. the addition of molybdenum titanium alloy is conducive to improve the corrosion resistance and toughness of resurfacing welding material at high temperature.
4. the characteristics of being impacted according to long-term under pot furnace high-temperature, a large amount of minute solid particles, is added artificial zircon flour, has
Conducive to resurfacing welding material skin-friction coefficient is reduced, the performance that dust washes away under resurfacing welding material high temperature resistant is improved.
Specific embodiment
Below by embodiment, the present invention is described in further detail, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
Such as " have " it should be appreciated that used herein, "comprising" and " comprising " term are not precluded one or more
The presence or addition of a other elements or combinations thereof.
Embodiment 1
A kind of boiler build-up welding alloy material, including 4 parts of molybdenum titanium alloy powder, 2 parts of silicomangan powder, 1 part of graphite powder, cerium oxide
0.4 part, 2 parts of basic magnesium chloride whisker, 8 parts of tungsten carbide powder, 50 parts of high carbon ferro-chrome, 8 parts of miberal powder, 1 part of niobium powder and 2 parts of nickel powder, it is remaining
Amount is atomized iron powder and inevitable impurity；
In each dusty raw materials, 100 μm of partial size or more account for 25~30%, and 40 μm~100 μm of partial size account for 45~50%, partial size
20~30% are accounted for less than 40 μm.Wherein, the granularity maximum of tungsten carbide powder must not exceed 500 μm, the granularity of basic magnesium chloride whisker
Maximum must not exceed 150 μm, and miberal powder should cross 140 mesh or more and sieve.
The partial size is no more than 5% less than 1 μm.Meticulous raw material is easy to assemble in the lower layer of raw material at the time of molding, thus
Cause raw material uneven.
The miberal powder includes artificial zircon flour 20wt%, Fluorspar Powder 40wt%, marble powder 40wt%.
The molybdenum titanium alloy powder is Mo-0.5Ti alloy.Mo-0.5Ti alloy comprehensive performance is preferable, applied to of the invention
Preferable corrosion resistance, increasing tougheness and preferable impact strength can be played in build-up welding alloy material.
The atomized iron powder is water-atomized iron powder.Water-atomized iron powder is conducive to roll-forming, and raising is melted in build-up welding alloy material
Uniformity when change.
Embodiment 2
A kind of boiler build-up welding alloy material, including 8 parts of molybdenum titanium alloy powder, 2 parts of silicomangan powder, 0.5 part of graphite powder, cerium oxide
0.2~1 part, 2 parts of basic magnesium chloride whisker, 6 parts of tungsten carbide powder, 45 parts of high carbon ferro-chrome, 10 parts of miberal powder, 2 parts of niobium powder and nickel powder 1
Part, surplus is atomized iron powder；
In each dusty raw materials, 100 μm of partial size or more account for 25~30%, and 40 μm~100 μm of partial size account for 45~50%, partial size
20~30% are accounted for less than 40 μm；The partial size is no more than 5% less than 1 μm.
The miberal powder includes artificial zircon flour 30wt%, Fluorspar Powder 40wt%, marble powder 30wt%.
The molybdenum titanium alloy powder is Mo-0.5Ti alloy.
Embodiment 3
A kind of preparation method of boiler build-up welding alloy material, by 6 parts of molybdenum titanium alloy powder, 2 parts of silicomangan powder, graphite powder 0.5
Part, 0.2~1 part of cerium oxide, 2 parts of basic magnesium chloride whisker, 8 parts of tungsten carbide powder, 45 parts of high carbon ferro-chrome, 10 parts of miberal powder, 2 parts of niobium powder
And 1 part of nickel powder, surplus is atomized iron powder, and surplus is the raw material of atomized iron powder, is sufficiently mixed in proportion uniformly, 80~100 DEG C of items
0.5~1h is dried under part, is placed in roll-forming in mold, 3-4h is kept the temperature under the conditions of being warming up to 200~300 DEG C, again after roll-in
It is cooling.
The pressure of the roll-forming is not less than 50kg/cm3。
When roll-forming, Ying Fanfu roll-in, roll-in number is no less than 3 times.By multiple roll-forming, heap soldering after cooling
The compactness of golden material is up to 99.5% or more.
Embodiment 4
On the basis of embodiment 1, using unitary variant method, using the content of zircon flour artificial in miberal powder as unitary variant, in pot
Furnace inner wall carries out overlay-operation, and carries out abrasion test, and acquired results are as follows:
| Artificial zircon powder content (wt%) | 0 | 5 | 10 | 20 | 25 | 30 |
| Rockwell hardness HRC | 46.2 | 48.9 | 50.1 | 52.9 | 53.6 | 53.7 |
| Coefficient of friction | 0.772 | 0.722 | 0.694 | 0.643 | 0.626 | 0.613 |
Embodiment 5
On the basis of embodiment 1, use argon flow for 18L/min, welding current 120A, weldingvoltage 16V, weldering
Connecing speed is the overlaying method of 50mm/min to about 50cm2, and the economizer surface damage of deep about 3mm carries out overlay-operation, completes
Tested afterwards with X-ray detectoscope, weld seam junction without internal injury or crackle, weld seam joint and workpiece performance deposit ± 3% it is strong
Error is spent, molten bath periphery is remaining without obvious stress.
Embodiment 6
Through test of many times, under the conditions of component, the boiler build-up welding alloy material of raw material particle size proportion is carried out using grading method
It is more general than the build-up welding alloy material density without rational proportion to be higher by 2% or more；Heap postwelding carries out raw material using grading method
Internal injury or cracking frequency of the boiler build-up welding alloy material of partial size proportion than the build-up welding alloy material without rational proportion
Low 3% or more.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (8)
1. a kind of boiler build-up welding alloy material, which is characterized in that including 4~8 parts of molybdenum titanium alloy powder, silicomangan powder 1~2
Part, 0.2~2 part of graphite powder, 0.2~1 part of cerium oxide, 2~4 parts of basic magnesium chloride whisker, 5~8 parts of tungsten carbide powder, high carbon ferro-chrome
40~50 parts, 8~10 parts of miberal powder, 1~2 part of niobium powder and 1~2 part of nickel powder, surplus is atomized iron powder；
Contain artificial zircon flour in the miberal powder.
2. boiler build-up welding alloy material as described in claim 1, which is characterized in that in each dusty material, partial size
100 μm or more account for 25~30%, and 40 μm~100 μm of partial size account for 45~50%, and partial size accounts for 20~30% less than 40 μm.
3. boiler build-up welding alloy material as claimed in claim 2, which is characterized in that the partial size being no more than less than 1 μm
5%。
4. boiler build-up welding alloy material as described in claim 1, which is characterized in that the miberal powder includes artificial zircon flour 20
~30wt%, 30~40wt% of Fluorspar Powder, 30~50wt% of marble powder.
5. boiler build-up welding alloy material as described in claim 1, which is characterized in that the molybdenum titanium alloy powder is Mo-0.5Ti
Alloy.
6. boiler build-up welding alloy material as described in claim 1, which is characterized in that the atomized iron powder is water atomization iron
Powder.
7. a kind of preparation method of boiler build-up welding alloy material described in claim 1, which is characterized in that by molybdenum titanium alloy powder
4~8 parts, 1~2 part of silicomangan powder, 0.2~2 part of graphite powder, 0.2~1 part of cerium oxide, 2~4 parts of basic magnesium chloride whisker, carbon
5~8 parts of tungsten powder of change, 40~50 parts of high carbon ferro-chrome, 8~10 parts of miberal powder, 1~2 part of niobium powder and 1~2 part of nickel powder, surplus are atomization iron
The raw material of powder is sufficiently mixed uniformly in proportion, 0.5~1h is dried under the conditions of 80~100 DEG C, is placed in roll-forming in mold, rises
Temperature is cooling after roll-in again to 3-4h is kept the temperature under the conditions of 200~300 DEG C.
8. the preparation method of boiler build-up welding alloy material as described in claim 1, which is characterized in that the roll-forming
Pressure is not less than 50kg/cm3。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910235231.3A CN109940310A (en) | 2019-03-27 | 2019-03-27 | Boiler build-up welding alloy material |
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| CN201910235231.3A CN109940310A (en) | 2019-03-27 | 2019-03-27 | Boiler build-up welding alloy material |
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| CN109940310A true CN109940310A (en) | 2019-06-28 |
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| CN106271197A (en) * | 2015-05-26 | 2017-01-04 | 中冶建筑研究总院有限公司 | Chromium-titanium intensified high-carbon high-alloy steel abrasion-proof overlaying welding flux-cored wire and preparation method thereof |
| CN107775210A (en) * | 2016-08-24 | 2018-03-09 | 颜瑞 | A kind of preparation method of wear-resistant overlay welding alloy material |
| CN109048120A (en) * | 2018-09-11 | 2018-12-21 | 江苏思迪彼特新材料科技有限公司 | A kind of high-strength, high-anti-friction stainless steel flux-cored wire and its application |
| RU2679374C1 (en) * | 2018-05-16 | 2019-02-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Flux cored wire |
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2019
- 2019-03-27 CN CN201910235231.3A patent/CN109940310A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528321A (en) * | 2011-12-07 | 2012-07-04 | 燕山大学 | Special welding rod used for surfacing reparation of high carbon steel type high-speed railway base tamping pick |
| CN103240539A (en) * | 2013-05-13 | 2013-08-14 | 王井丽 | Flux-cored wire having high abrasion resistance and application thereof |
| CN103785971A (en) * | 2014-01-23 | 2014-05-14 | 江苏科技大学 | Non-slag self-protection flux-cored wire with ultra-low stomatal sensitivity for bead weld |
| CN106271197A (en) * | 2015-05-26 | 2017-01-04 | 中冶建筑研究总院有限公司 | Chromium-titanium intensified high-carbon high-alloy steel abrasion-proof overlaying welding flux-cored wire and preparation method thereof |
| CN106077999A (en) * | 2016-08-05 | 2016-11-09 | 天长市通联焊业有限公司 | A kind of corrosion-resistant high rigidity flux-cored wire |
| CN107775210A (en) * | 2016-08-24 | 2018-03-09 | 颜瑞 | A kind of preparation method of wear-resistant overlay welding alloy material |
| RU2679374C1 (en) * | 2018-05-16 | 2019-02-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Flux cored wire |
| CN109048120A (en) * | 2018-09-11 | 2018-12-21 | 江苏思迪彼特新材料科技有限公司 | A kind of high-strength, high-anti-friction stainless steel flux-cored wire and its application |
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