CN105665960A - Flux core of high-chromium residue-free wear-resistant welding wire - Google Patents
Flux core of high-chromium residue-free wear-resistant welding wire Download PDFInfo
- Publication number
- CN105665960A CN105665960A CN201610253170.XA CN201610253170A CN105665960A CN 105665960 A CN105665960 A CN 105665960A CN 201610253170 A CN201610253170 A CN 201610253170A CN 105665960 A CN105665960 A CN 105665960A
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- China
- Prior art keywords
- powder
- welding wire
- abrasion
- resistant welding
- medicated core
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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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
Abstract
The invention relates to a flux-cored welding wire, particularly to a flux core of a high-chromium residue-free wear-resistant welding wire. The flux core is prepared from the following components in percentage by weight: 3-5% of high-carbon ferrochrome alloy powder, 5-10% of boron carbide powder, 8-15% of ferroboron alloy powder, 4-10% of silicon carbide powder, 5-15% of ferrosilicon alloy powder, 4-6% of silver graphite powder, 1-2% of aluminum powder and the balance of iron powder. The high-carbon ferrochrome is appropriately added, so that the wear resistance of the weld alloy can be improved; the carbon content is appropriately increased, so that the improvement of the electrical arc stability can be facilitated; the aluminum content is appropriately increased, so that not only are the deoxidization and nitrogen fixation capacities improved, but also the electrical arc stability is further improved, the carbon oxidation is inhibited, and in addition, overflow splashing of gas is reduced.
Description
Technical field
The present invention relates to abrasion-resistant welding wire, specifically high chromium is without the medicated core of slag abrasion-resistant welding wire.
Background technology
In actual industrial production process, the wear out failure of plant equipment and part is huge to Influence of production. Alleviating weares and teares has energy-saving material-saving, resource makes full use of and safing important function. And the effectively method of the abrasion alleviating machine components is welded exactly. The appearance of flux-cored wire and development adapted to welding production to high benefit, low cost, high-quality, automation development trend. Along with developing rapidly of world industry, solder technology also steps into semi-automatic, the automatic and intelligentized stage, thus bringing wide prospect to the development of flux-cored wire. Flux-cored wire is development in recent years a kind of advanced welding material faster swift and violent, universal, is the leading welding material in following century, automatically and become one of a kind of rising welding material in semi-automatic welding.
At present, the medicated powder in flux-cored wire typically contains marble, and marmorean Main Function is gas making, and the calcium oxide that marble produces after decomposing is basic anhydride, can improve weld metal heat resistanceheat resistant crackle ability; Simultaneous oxidation calcium can make molten drop alligatoring, changes the transitional form of molten drop. Marble decomposes the carbon dioxide produced also can strengthen the oxidisability of arc atmosphere, reduces the hydrogen dividing potential drop in electric arc, makes the hydrogen content in weld metal reduce. But adopting the weld appearance that this kind of welding wire welds rough, splash big, arc stability is undesirable, and can produce pore.
Summary of the invention
For above-mentioned technical problem, the present invention provide a kind of in welding process the good high chromium of arc stability without the medicated core of slag abrasion-resistant welding wire.
The technical solution used in the present invention is: high chromium is without the medicated core of slag abrasion-resistant welding wire, its component is by following mass percent composition: high-carbon chrome alloy powder 3 5%, boron carbide powder 5 10%, ferro-boron powder 8 15%, carborundum powder 4 10%, ferro-silicon alloy powder 5 15%, silver strip graphite powder 4 6%, aluminium powder 1 2%, surplus is iron powder.
As preferably, containing chromium 65wt% in high-carbon chrome alloy powder, carbon containing 8wt%.
As preferably, the impurity content in boron carbide powder is less than 0.3wt%.
As preferably, in ferro-boron powder, Boron contents is 18wt%.
As preferably, the impurity content in carborundum powder is less than 0.4wt%.
As preferably, in ferro-silicon alloy powder, silicone content is 45wt%.
As preferably, more than the phosphorus content 98wt% of silver strip graphite powder.
As preferably, the impurity content in aluminium powder is less than 0.4wt%.
As preferably, the impurity content in iron powder is less than 0.5wt%.
From the above it can be seen that the present invention is suitably added high carbon ferro-chrome, the wearability of weld seam alloy can be improved, suitably increase carbon content simultaneously, be of value to raising arc stability; And suitably increase aluminum content, not only increase deoxidation, nitrogen fixing capacity, increase arc stability further, it is suppressed that the oxidation of carbon; And reduce gas overflowing and splash.
Detailed description of the invention
The present invention is described more detail below, and illustrative examples and explanation in this present invention are used for explaining the present invention, but not as a limitation of the invention.
A kind of medicated core of abrasion-resistant welding wire, its component is by following mass percent composition: high chromium is without the medicated core of slag abrasion-resistant welding wire, its component is by following mass percent composition: high-carbon chrome alloy powder 3 5%, boron carbide powder 5 10%, ferro-boron powder 8 15%, carborundum powder 4 10%, ferro-silicon alloy powder 5 15%, silver strip graphite powder 4 6%, aluminium powder 1 2%, surplus is iron powder, wherein
In high-carbon chrome alloy powder, chromium and carbon have stronger affinity, and chromium can be solid-solution in iron-based body, play the effect increasing matrix strength and corrosion resistance; Chromium atom also forms carbide with carbon atom at matrix grain boundaries, often in netted or dendroid distribution, can improve the anti-wear performance of weld seam alloy. In actual welding process, in weld seam alloy, chromium content is lower than the content of ferrum, but chromium element is often solidly soluted in iron-carbon compound with atomic form, replaces part iron atom therein, forms binary carbon compound, thus ensureing the wearability of weld seam alloy. And in the medicated core of the present invention; add appropriate silver strip graphite powder; in welding heating pyroprocess; the affinity of carbon and oxygen strengthens; the carbon monoxide generated and carbon dioxide form protection atmosphere in arc region; stop the intrusion of harmful gas in air so that it is his alloying element smoothly transits to weld seam alloy, thus reaching micro-slag even without the purpose of slag.
Medicated core adds carborundum, silicon mainly exists with atom solid solution and two kinds of forms of compound, the silicon of silicon carbide decomposition generation and carbon atom, improve weld seam alloy carbon content, and promote carbon atom to assemble, reduce retained austenite quantity, and eutectic structure quantity increases, and improves weld seam alloy rigidity and wearability; In addition, the addition of ferro-silicon alloy powder can obtain that toughness is higher and the wear-resisting weld seam alloy of hard.
Aluminium powder is as good deoxidation denitrifying alloys composition, it is possible to effectively reduce the oxygen content in welding arc region and liquid metal, to the formation of molten drop in welding process, grow up, process plays a very good protection; The present invention also adopts silicon deoxidation, and the carbon added and aluminum can protect silicon transition, so that it undertakes the deoxidation task in molten bath. The present invention is additionally added boron carbide powder, ferro-boron powder, can reduce spatter and flue dust.
Embodiment 1
High chromium is without the medicated core of slag abrasion-resistant welding wire containing high-carbon chrome alloy powder 3%, boron carbide powder 5%, ferro-boron powder 15%, carborundum powder 10%, ferro-silicon alloy powder 5%, silver strip graphite powder 4%, aluminium powder 2%, and surplus is iron powder. Welding after the medicated core of this component is made welding wire, the hardness recording weld seam alloy is 61.5HRC, and spatter loss coefficient is 9.6%, and arc stability is good.
Embodiment 2
High chromium is without the medicated core of slag abrasion-resistant welding wire containing high-carbon chrome alloy powder 4%, boron carbide powder 8%, ferro-boron powder 12%, carborundum powder 7%, ferro-silicon alloy powder 10%, silver strip graphite powder 5%, aluminium powder 1.5%, and surplus is iron powder.Welding after the medicated core of this component is made welding wire, the hardness recording weld seam alloy is 64.8HRC, and spatter loss coefficient is 9.3%, and arc stability is good.
Embodiment 3
High chromium is without the medicated core of slag abrasion-resistant welding wire containing high-carbon chrome alloy powder 5%, boron carbide powder 10%, ferro-boron powder 8%, carborundum powder 4%, ferro-silicon alloy powder 15%, silver strip graphite powder 6%, aluminium powder 1%, and surplus is iron powder. Welding after the medicated core of this component is made welding wire, the hardness recording weld seam alloy is 62.5HRC, and spatter loss coefficient is 9.8%, and arc stability is good.
The technical scheme above embodiment of the present invention provided is described in detail, principle and the embodiment of the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only applicable to help to understand the principle of the embodiment of the present invention; Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (9)
1. high chromium is without the medicated core of slag abrasion-resistant welding wire, its component is by following mass percent composition: high-carbon chrome alloy powder 3 5%, boron carbide powder 5 10%, ferro-boron powder 8 15%, carborundum powder 4 10%, ferro-silicon alloy powder 5 15%, silver strip graphite powder 4 6%, aluminium powder 1 2%, surplus is iron powder.
2. the medicated core of abrasion-resistant welding wire according to claim 1, it is characterised in that: containing chromium 65wt% in high-carbon chrome alloy powder, carbon containing 8wt%.
3. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: the impurity content in boron carbide powder is less than 0.3wt%.
4. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: in ferro-boron powder, Boron contents is 18wt%.
5. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: the impurity content in carborundum powder is less than 0.4wt%.
6. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: in ferro-silicon alloy powder, silicone content is 45wt%.
7. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: more than the phosphorus content 98wt% of silver strip graphite powder.
8. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: the impurity content in aluminium powder is less than 0.4wt%.
9. the medicated core of abrasion-resistant welding wire as claimed in claim 1, it is characterised in that: the impurity content in iron powder is less than 0.5wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253170.XA CN105665960A (en) | 2016-04-22 | 2016-04-22 | Flux core of high-chromium residue-free wear-resistant welding wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253170.XA CN105665960A (en) | 2016-04-22 | 2016-04-22 | Flux core of high-chromium residue-free wear-resistant welding wire |
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| CN105665960A true CN105665960A (en) | 2016-06-15 |
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| CN201610253170.XA Pending CN105665960A (en) | 2016-04-22 | 2016-04-22 | Flux core of high-chromium residue-free wear-resistant welding wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570910A (en) * | 2017-10-18 | 2018-01-12 | 柳州凯通新材料科技有限公司 | A kind of highly wear-resisting alloy steel welding wire medicine core |
| CN108747083A (en) * | 2018-07-03 | 2018-11-06 | 湘潭大学 | A kind of high boron flux-cored wire and its application process of the wear-resisting phase of two-phase complex intensifying master |
| CN108907507A (en) * | 2018-09-07 | 2018-11-30 | 南京工程学院 | A kind of method of the multielement steel band preparation without slag self-protection flux-cored wire |
| CN111940948A (en) * | 2020-07-24 | 2020-11-17 | 天津沃盾耐磨材料有限公司 | Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof |
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| JP2010501350A (en) * | 2006-07-11 | 2010-01-21 | リンカーン グローバル インコーポレーテッド | Carbon for welding metal |
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| CN103381527A (en) * | 2013-07-06 | 2013-11-06 | 北京工业大学 | Tungsten carbide reinforcing iron-based abrasion resistance build-up welding flux-cored wire |
| 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 |
| CN103949794A (en) * | 2014-04-10 | 2014-07-30 | 北京工业大学 | Iron base hardfacing flux-cored wire containing superfine carbide hard phase |
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- 2016-04-22 CN CN201610253170.XA patent/CN105665960A/en active Pending
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| JP2010501350A (en) * | 2006-07-11 | 2010-01-21 | リンカーン グローバル インコーポレーテッド | Carbon for welding metal |
| CN103240547A (en) * | 2013-05-09 | 2013-08-14 | 太原理工大学 | Method for manufacturing TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire |
| CN103381527A (en) * | 2013-07-06 | 2013-11-06 | 北京工业大学 | Tungsten carbide reinforcing iron-based abrasion resistance build-up welding flux-cored wire |
| 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 |
| CN103949794A (en) * | 2014-04-10 | 2014-07-30 | 北京工业大学 | Iron base hardfacing flux-cored wire containing superfine carbide hard phase |
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| 唐天顺: ""高铬自保护明弧堆焊无渣耐磨药芯焊丝的研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570910A (en) * | 2017-10-18 | 2018-01-12 | 柳州凯通新材料科技有限公司 | A kind of highly wear-resisting alloy steel welding wire medicine core |
| CN108747083A (en) * | 2018-07-03 | 2018-11-06 | 湘潭大学 | A kind of high boron flux-cored wire and its application process of the wear-resisting phase of two-phase complex intensifying master |
| CN108907507A (en) * | 2018-09-07 | 2018-11-30 | 南京工程学院 | A kind of method of the multielement steel band preparation without slag self-protection flux-cored wire |
| CN111940948A (en) * | 2020-07-24 | 2020-11-17 | 天津沃盾耐磨材料有限公司 | Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof |
| CN111940948B (en) * | 2020-07-24 | 2021-03-19 | 天津沃盾耐磨材料有限公司 | Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof |
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Application publication date: 20160615 |
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