CN106112304A - A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire and preparation method thereof - Google Patents
A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire and preparation method thereof Download PDFInfo
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- CN106112304A CN106112304A CN201610607718.6A CN201610607718A CN106112304A CN 106112304 A CN106112304 A CN 106112304A CN 201610607718 A CN201610607718 A CN 201610607718A CN 106112304 A CN106112304 A CN 106112304A
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
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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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
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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
- B23K35/40—Making wire or rods for soldering or welding
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- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The open a kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire of the present invention; with mild-carbon steel strip as crust, drug core component is by mass percentage: 60～the 80 mesh high carbon ferro-chromes of 72%, 12～the 80 mesh electrolytic manganese powders of 18%; 1～the graphite of 2%; 2～the ferro-boron of 8%, 1～the 60 mesh almags of 4%, 2～the ferrosilicon of 6%; surplus is 80 mesh iron powders; wherein, graphite, ferro-boron, almag and ferrosilicon all add with 60 mesh and two kinds of granularities of 200 mesh, and medicated core powder accounts for the 54 58% of welding wire gross weight.The welding wire that the present invention provides, ensure that, by the interpolation of many granularities deoxidizer, the processing performance that welding wire is good, by with the addition of more large content of Mn element in medicated core, effectively facilitating the formation of " Binder Phase " austenite structure, effectively improve the toughness of hardfacing alloy, thus improve its crack resistance.And owing to Mn is solid-solution in M7C3Among, further increase M7C3Hardness.The comprehensive function of two aspects so that the wearability of rich chromium cast iron hardfacing alloy is effectively improved.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, more particularly to a kind of manganese Strengthening and Toughening rich chromium cast iron self-insurance
Protect flux-cored wire and preparation method thereof.
Background technology
Built-up welding, as a kind of green manufacturing technique, is widely used in the reparation of all kinds of wear parts or remanufactures.Owing to becoming
This cheap being in addition easy to is prepared, with M7C3Type carbide (M=Cr, Fe) is that the rich chromium cast iron hardfacing alloy of wear-resisting skeleton obtains extensively
General application.M thick in the hypereutectic tissue of rich chromium cast iron hardfacing alloy7C3Type carbide, on the one hand has for raising wearability more
Benifit, on the other hand easily there is metallurgical imperfection and micro-crack in itself, and fragility is very big, become hardfacing alloy under arms during
Develop into the macroscopic cracking even major reason of cracking destruction.Therefore, tradition high-chromium cast iron-type hardfacing alloy crack resistance is overcome
The defect of difference, is a hot subject of development in recent years technique for overlaying.
Generally use and reduce C and the way of alloying element content so that high-chromium cast iron-type hardfacing alloy is by hypereutectic tissue
Change to hypoeutectic structure, to obtain enough toughness；But reducing C and alloying element content, to also result in hardfacing alloy hard
Degree is decreased obviously, and wearability also cannot be ensured.It should be noted that the austenitic type in high-chromium cast iron-type hardfacing alloy seemingly
" Binder Phase " in hard alloy.By the method that composition is modified, suitably increase this " Binder Phase " austenite, will be to change
The new thought of kind high-chromium cast iron-type hardfacing alloy crack resistance.
Summary of the invention
Goal of the invention: for solving technical problem present in prior art, the present invention provides a kind of manganese Strengthening and Toughening height chromium casting
Ferrum self protection pile-up welding flux core welding wire and preparation method thereof.
Technology contents: for realizing above-mentioned technical purpose, the present invention proposes a kind of manganese Strengthening and Toughening rich chromium cast iron self-shield built-up welding
Flux-cored wire, including mild-carbon steel strip and medicated core, flux cored filler is in steel band, and described drug core component weight/mass percentage composition scope is such as
Under: 60～the 80 mesh high carbon ferro-chromes of 72%, 12～the 80 mesh electrolytic manganese powders of 18%, 1～the graphite of 2%, 2～the ferro-boron of 8%, 1
～the 60 mesh almags of 4%, 2～the ferrosilicon of 6%, surplus is 80 mesh iron powders, wherein, graphite, ferro-boron, almag and ferrosilicon
All add with 60 mesh and two kinds of granularities of 200 mesh, wherein, medicated core powder accounts for the 54-58% of welding wire gross weight.
As preferably, described high carbon ferro-chrome phosphorus content is 9～10wt%, and chrome content is 60～70wt%, and remaining is ferrum；
Described ferrosilicon silicon content is 72～80wt%, and remaining is ferrum；Described ferro-boron boron content is 19～25wt%, and remaining is ferrum；
Described almag aluminum content is 47～53wt%, and remaining is magnesium.
Preferably, varigrained graphite in described medicated core: the graphite of 60 mesh and the graphite of 200 mesh, and with mass ratio 1:1
The mode of combination adds.
Preferably, varigrained ferro-boron in described medicated core: the graphite of 60 mesh and the graphite of 200 mesh, and with mass ratio 1:1
The mode of combination adds.
Preferably, the almag of different-grain diameter in described medicated core: the almag of 60 mesh and the almag of 200 mesh,
And add in the way of mass ratio 1:1 combination.
Preferably, the ferrosilicon of different-grain diameter in described medicated core: the ferrosilicon of 60 mesh and the ferrosilicon of 200 mesh, and with mass ratio 1:1
The mode of combination adds.
Preferably, in described medicated core, the particle diameter of high carbon ferro-chrome, ferrosilicon and iron powder component in described medicated core is equal to 80
Mesh.
Preferably, in described medicated core, described mild-carbon steel strip thickness × width is 0.5 × 21mm.
Preferably, in described medicated core, in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of described welding wire
Any one.
The preparation method of above-mentioned manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, comprises the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder by the medicated core powder of the present invention
Join in U-lag by the 54-58% of welding wire gross weight of the present invention；
(2) U-lag is healed up, make medicated core wrap up wherein, by wire drawing die, by road drawing, tube reducing, finally make its diameter
To 2.8～4.2mm, obtain final products.
In above-mentioned medicated core, each component Main Function is as follows:
High carbon ferro-chrome: transition alloy elements Cr in deposited metal, and C element is provided.
Manganese powder: transition alloy elements Mn, solution strengthening M7C3Carbide, promotes the formation of " Binder Phase " austenite.
Ferro-boron: deoxidation, reduces weld pool surface tension force, improves figuration of bead.
Graphite: provide C element, deoxidation forms CO, and reduces the partial pressure of oxygen in welding atmosphere and nitrogen partial pressure.
Almag: deoxidation, fixed nitrogen, strengthen self-shield effect.
Ferrosilicon: deoxidation, oozes Si.
Sketched by the effect of component each in technique scheme and medicated core it is understood that due to the fact that and add in medicated core
More large content of Mn element, it is primarily present in M in hardfacing alloy tissue7C3Among, and small amount is present in matrix,
Mn is as a kind of austenite former simultaneously, promotes the formation of " Binder Phase " austenite structure, effectively improves hardfacing alloy
Toughness, thus improve its crack resistance, improve wearability.On the other hand, it is solid-solution in M due to Mn7C3Among, further increase
M7C3Hardness.
Additionally, in medicated core, the granularity of graphite, ferro-boron, almag and ferrosilicon all has two kinds: 60 mesh and 200 mesh, with granularity
The mode of difference combination is added.In whole welding process, in the molten drop stage of existing extreme temperatures, there is again the molten bath that temperature is slightly lower
In the stage, whichever is required for being prevented effectively from air pollution and just can obtain qualified welding deposited metal in stage, and seminar passes through
The substantial amounts of engineer testing of early stage finds, the self-shield that can be obviously improved welding wire by varigrained above-mentioned medicated core component is imitated
Really.This is that varigrained powder has different oxidation activities.The new of chemical metallurgy reactivity is controlled by component particle size
Thinking, adds superfine 200 mesh graphite, ferro-boron, almag and ferrosilicon in medicated core, utilizes it to carry out in the welding temperature rise period
Effective precedent desoxydation, adds thicker 60 mesh graphite, almag and ferrosilicon in medicated core simultaneously, is retained in molten drop high temperature rank
Section and molten bath stage, it is also possible to carry out effective deoxidation gas making, thus ensure to be heated at whole welding wire, melt, form molten drop, melt
Drip transition, form molten bath and start the Welding Metallurgy whole process of solidification and be provided with good self-shield effect, it is achieved thereby that this weldering
Silk, in the case of not adding any mineral powder slag former, remains able to possess good welding technological properties and welding metal
Shaping surface.Meanwhile, the interpolation of many granularities deoxidizer, it is ensured that under the adding conditional of less deoxidizer, obtains good self-shield
Effect, for medicated core formula medium high carbon ferrochrome, manganese powder etc. enough interpolations and with great transition coefficient transition create steric requirements and
Environmental condition.
Beneficial effect: the present invention is by with the addition of more large content of Mn element in medicated core, and on the one hand it effectively facilitate " viscous
Knot phase " formation of austenite structure, effectively improve the toughness of hardfacing alloy, thus improve its crack resistance.On the other hand, due to
Mn is solid-solution in M7C3Among, further increase M7C3Hardness.The comprehensive function of two aspects so that rich chromium cast iron heap seam
The wearability of gold is effectively improved.Additionally, control the new approaches of chemical metallurgy reactivity also by component particle size, at medicated core
In be respectively combined interpolation 200 superfine mesh and thicker 60 mesh graphite, ferro-boron, almag and ferrosilicon, be effectively ensured whole
Welding wire is heated, melt, form molten drop, droplet transfer, formation molten bath and start the Welding Metallurgy whole process of solidification and be provided with good
Self-shield effect, it is achieved thereby that this welding wire is not in the case of adding any mineral powder slag former, remains able to possess good
Good welding technological properties and welding bead shaping surface.The flux-cored wire welding technological properties of the present invention is good, and alloy structure refinement is bright
Aobvious, overlay surface hardness is uniform, and toughness is preferable, and average hardness is in 62～66HRC scopes.Wearability is 30 times of left sides of Q235
Right.
Detailed description of the invention
According to following embodiment, the present invention be may be better understood.But, the concrete medicated core component described by embodiment
Proportioning, process conditions and result thereof are merely to illustrate the present invention, and should also not retouch in detail without limitation in claims
The present invention stated.Wherein, the high carbon ferro-chrome phosphorus content used in following examples is 9～10wt%, chrome content be 60～
70wt%, remaining is ferrum；Described ferrosilicon silicon content is 72～80wt%, and remaining is ferrum；Described ferro-boron boron content be 19～
25wt%, remaining is ferrum；Described almag aluminum content is 47～53wt%, and remaining is magnesium.
Embodiment 1
A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, including mild-carbon steel strip and medicated core, flux cored filler in
In steel band, drug core component is prepared by following quality: the 80 mesh high carbon ferro-chromes of 72g, the 80 mesh electrolytic manganese powders of 12g, the stone of 1g
Ink, the ferro-boron of 3g, the 60 mesh almags of 1g, the ferrosilicon of 2g, the 80 mesh iron powders of 9g, wherein, graphite, ferro-boron, almag and
Ferrosilicon all adds with 60 mesh and two kinds of granularities of 200 mesh, and it is equal each of to be added the mass fraction of 60 mesh and 200 mesh in powder
Respectively account for 50%.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder add U-shaped 21 ×
In the H08A carbon steel steel band groove of 0.5mm, filling rate is 54%.Again U-lag is healed up, make medicated powder wrap up wherein.Then its point is made
Not Tong Guo one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, subtract
Footpath, finally obtains the product of a diameter of 2.8～4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, welding
Speed is 0.4m/min, and interlayer temperature controls at 150～250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 2
A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, including mild-carbon steel strip and medicated core, flux cored filler in
In steel band, drug core component is prepared by following quality: the 80 mesh high carbon ferro-chromes of 65g, the 80 mesh electrolytic manganese powders of 14g, 1.5g's
Graphite, the ferro-boron of 2g, the 60 mesh almags of 4g, the ferrosilicon of 6g, the 80 mesh iron powders of 7.5g, wherein, graphite, ferro-boron, magnalium close
Gold and ferrosilicon all add with 60 mesh and two kinds of granularities of 200 mesh, and each of are added the quality of 60 mesh and 200 mesh in powder and divide
Number respectively accounts for 50%.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder is added the 21 of U-shaped
In the H08A carbon steel steel band groove of × 0.5mm, filling rate is 55%.Again U-lag is healed up, make medicated powder wrap up wherein.Then it is made
Respectively by one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, subtract
Footpath, finally obtains the product of a diameter of 2.8～4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, welding
Speed is 0.4m/min, and interlayer temperature controls at 150～250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 3
A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, including mild-carbon steel strip and medicated core, flux cored filler in
In steel band, drug core component is prepared by following quality: the 80 mesh high carbon ferro-chromes of 70g, the 80 mesh electrolytic manganese powders of 16g, 1.5g's
Graphite, the ferro-boron of 5g, the 60 mesh almags of 2g, the ferrosilicon of 4g, the 80 mesh iron powders of 4.5g, wherein, graphite, ferro-boron, magnalium close
Gold and ferrosilicon all add with 60 mesh and two kinds of granularities of 200 mesh, and each of are added the quality of 60 mesh and 200 mesh in powder and divide
Number respectively accounts for 50%.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder is added the 21 of U-shaped
In the H08A carbon steel steel band groove of × 0.5mm, filling rate is 57%.Again U-lag is healed up, make medicated powder wrap up wherein.Then it is made
Respectively by one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, subtract
Footpath, finally obtains the product of a diameter of 2.8～4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, welding
Speed is 0.4m/min, and interlayer temperature controls at 150～250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are shown in Table 1.
Embodiment 4
A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, including mild-carbon steel strip and medicated core, flux cored filler in
In steel band, drug core component is prepared by following quality: the 80 mesh high carbon ferro-chromes of 60g, the 80 mesh electrolytic manganese powders of 18g, the stone of 2g
Ink, the ferro-boron of 8g, the 60 mesh almags of 3g, the ferrosilicon of 5g, the 80 mesh iron powders of 4g, wherein, graphite, ferro-boron, almag and
Ferrosilicon all adds with 60 mesh and two kinds of granularities of 200 mesh, and it is equal each of to be added the mass fraction of 60 mesh and 200 mesh in powder
Respectively account for 50%.Taken various powder are inserted in mixed powder machine, mix 40 minutes, then mixed-powder add U-shaped 21 ×
In the H08A carbon steel steel band groove of 0.5mm, filling rate is 58%.Again U-lag is healed up, make medicated powder wrap up wherein.Then its point is made
Not Tong Guo one or more in the wire drawing die of a diameter of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm, by road drawing, subtract
Footpath, finally obtains the product of a diameter of 2.8～4.2mm.Welding current is 280～420A, and weldingvoltage is 30～42V, welding
Speed is 0.4m/min, and interlayer temperature controls at 150～250 DEG C, built-up welding 3 layers.Deposited metal hardness and wearability are shown in Table 1.
The beaten hardness of table 1 uses HR-150A Rockwell apparatus, load 150Kg, and each test specimens takes 5 point hardnesses, meter
Calculate average hardness value.
Wear test uses MLS-225 type wet type rubber wheel abrasion tester.
The overlay cladding of each embodiment is cut five a size of 57 × 25 × 6mm Wear specimens.Wear test parameter is as follows:
Rubber wheel diameter: 178mm, rubber wheel rotating speed: 240 revs/min, rubber wheel hardness: 70 (Shao Er hardness), load: 10Kg, rubber wheel
Revolution: pre-grinding 1000 turns, formal test turns 1000 turns, abrasive material: the quartz sand of 40～70 mesh.The anti-wear performance of deposited metal is with just
The weight loss of formula abrasion is weighed.Sample is inserted in the beaker filling acetone soln every time experiment is forward and backward, clear at ultrasound wave
Wash in instrument and clean 3～5 minutes, record of weighing after dry.Experiment Q235 steel sample as a comparison, contrast piece weight loss and measuring piece
Relative wear resistance ε being used for built-up welding sample of weight loss.
Table 1 each embodiment deposited metal hardness and wear resistance
The present invention is by with the addition of more large content of Mn element in medicated core, and on the one hand it effectively facilitate " Binder Phase " Ovshinsky
The formation of soma, effectively improves the toughness of hardfacing alloy, thus improves its crack resistance.On the other hand, it is solid-solution in due to Mn
M7C3Among, further increase M7C3Hardness.The comprehensive function of two aspects so that rich chromium cast iron hardfacing alloy wear-resisting
Property is effectively improved.Additionally, control the new approaches of chemical metallurgy reactivity also by component particle size, group respectively in medicated core
Close and add 200 superfine mesh and thicker 60 mesh graphite, ferro-boron, almag and ferrosilicon, be effectively ensured be heated at whole welding wire,
Fusing, formation molten drop, droplet transfer, formation molten bath the Welding Metallurgy whole process starting to solidify are provided with good self-shield effect
Really, it is achieved thereby that this welding wire is not in the case of adding any mineral powder slag former, remain able to possess good welding
Processing performance and welding bead shaping surface.The flux-cored wire welding technological properties of the present invention is good, and alloy structure refinement is obvious, overlay cladding
Case hardness is uniform, and toughness is preferable, and average hardness is in 62～66HRC scopes.Wearability is about 30 times of Q235.
Claims (10)
1. a manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, including mild-carbon steel strip and medicated core, flux cored filler is in steel
In band, it is characterised in that described drug core component weight/mass percentage composition scope is as follows: 60～the high carbon ferro-chrome of 72%, 12～
The electrolytic manganese powder of 18%, 1～the graphite of 2%, 2～the ferro-boron of 8%, 1～the almag of 4%, 2～the ferrosilicon of 6%, surplus is
80 mesh iron powders, wherein, graphite, ferro-boron, almag and ferrosilicon all add with the mixture of 60 mesh and 200 two kinds of granularities of mesh, its
In, medicated core powder accounts for the 54-58% of welding wire gross weight.
Manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire the most according to claim 1, it is characterised in that described
High carbon ferro-chrome phosphorus content is 9～10wt%, and chrome content is 60～70wt%, and remaining is ferrum；Described ferrosilicon silicon content be 72～
80wt%, remaining is ferrum；Described ferro-boron boron content is 19～25wt%, and remaining is ferrum；Described almag aluminum content is
47～53wt%, remaining is magnesium.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that no
The graphite of one-size: the graphite of 60 mesh and the graphite of 200 mesh, and add in the way of mass ratio 1:1 combination.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that no
The ferro-boron of one-size: the ferro-boron of 60 mesh and the ferro-boron of 200 mesh, and add in the way of mass ratio 1:1 combination.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that no
Almag with particle diameter: the almag of 60 mesh and the almag of 200 mesh, and add in the way of mass ratio 1:1 combination.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that no
Manganese powder with particle diameter: the ferrosilicon of 60 mesh and the ferrosilicon of 200 mesh, and add in the way of mass ratio 1:1 combination.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that institute
The particle diameter stating the high carbon ferro-chrome in medicated core, manganese powder and iron powder component is equal to 80 mesh.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that institute
Stating mild-carbon steel strip thickness × width is 0.5 × 21mm.
The most according to claim 1 containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire, it is characterised in that institute
State in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of welding wire any one.
10. the preparation method containing manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire described in claim 1, its feature
It is, comprises the steps:
(1) utilize molding roller that mild steel steel band is rolled into U-shaped, then by dust feeder, the medicated core powder of the present invention is pressed weldering
The 54-58% of silk gross weight joins in U-lag；
(2) U-lag is healed up, make medicated core wrap up wherein, by wire drawing die, by road drawing, tube reducing, finally make its diameter reach
2.8～4.2mm, obtain final products.
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| CN201610607718.6A CN106112304B (en) | 2016-07-28 | 2016-07-28 | A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire and preparation method thereof |
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| CN201610607718.6A CN106112304B (en) | 2016-07-28 | 2016-07-28 | A kind of manganese Strengthening and Toughening high chromium cast iron self protective build-up welding cored welding wire and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113146094A (en) * | 2021-02-04 | 2021-07-23 | 苏州鑫之泰焊接材料有限公司 | High-hardness crack-free boron-containing hardfacing flux-cored wire |
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| CN113146094B (en) * | 2021-02-04 | 2024-01-09 | 苏州鑫之泰焊接材料有限公司 | High-hardness crack-free boron-containing hardfacing flux-cored wire |
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| CN106112304B (en) | 2018-07-27 |
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