CN107335942B - PH13-8Mo stainless steel Self-protecting welding wire and preparation method thereof - Google Patents
PH13-8Mo stainless steel Self-protecting welding wire and preparation method thereof Download PDFInfo
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- CN107335942B CN107335942B CN201710565130.3A CN201710565130A CN107335942B CN 107335942 B CN107335942 B CN 107335942B CN 201710565130 A CN201710565130 A CN 201710565130A CN 107335942 B CN107335942 B CN 107335942B
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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
- B23K35/3093—Fe as the principal constituent with other elements as next major constituents
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- 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
- B23K35/406—Filled tubular wire or rods
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
PH13-8Mo stainless steel Self-protecting welding wire of the present invention, is made of crust and medicine core, and skin material is 304 stainless steel belts；Medicine core generates slag using mineral slag system, protects the molten bath formed when welding, plays the role of self-shield, has saving and protection gas and higher production efficiency, and the weld seam removability of slag is good, can be used for continuous wire feed automatic welder；, appearance of weld few with spatter be beautiful and good welds processing performance；The present invention also provides the preparation method of above-mentioned welding wire, medicine core material is metal molybdenum, metallic nickel, crome metal, electrolytic aluminium, barium fluoride, rutile, zircon sand, magnesium aluminum-alloy powder, aluminium oxide, quartz, lithium carbonate, magnesia, ferrosilicon, ferrotianium, boron powder and rare earth, remaining is iron powder；Medicine core is added to U-type groove that 304 stainless steel belts are rolled into, closure is rolled, drawing, is straightened, disk Cheng Yuanpan, sealed package can be obtained, and preparation method is simple, it is easy to accomplish.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to PH13-8Mo stainless steel Self-protecting welding wire, this hair
The bright preparation method for further relating to the welding wire.
Background technique
Martensite aged stainless steel is a kind of to be superimposed by low-carbon martensite phase transformation, ageing strengthening two kinds of strengthening effects
A kind of superhigh strength stainless steel arrived.This steel not only has all advantages of Maraging steel, but also has other geneva
Corrosion resistance characteristic not available for body aged steel；Martensite aged stainless steel has best corrosion resistance in fully hardened state,
Also there is best halophile stress-corrosion cracking performance, in addition, not only having high intensity, be also provided simultaneously with excellent fracture
Toughness, horizontal mechanical performance and anticorrosion stress-resistant performance.Therefore gradually replace precipitation-hardening stainless steel as high-strength stainless steel,
As a kind of important trend of development, it is widely used in the fields such as aerospace, nuclear reactor and petrochemical industry.
PH13-8Mo martensite aged stainless steel is mainly made of 8% Ni, 2% Mo, 13% Cr.PH13-8Mo horse
Family name's body aged stainless steel passes through heat treatment: (1) when solution treatment, i.e., steel being heated to 50 DEG C of Ac3 or more or so (all analysis at this time
Phased soln and crystal grain are not grown up acutely again out), it is then air-cooled, obtain uniform, tiny lath martensite tissue；In this state
The hardness of steel is lower, can carry out various cold deformations, welding and machining；(2) when ageing treatment, can be divided into highest reinforcing when
Effect processing and Wetted constructures: the former temperature is generally 480 DEG C or so, aging time about 3 hours, steel can at this time obtained best
Combination of strength and toughness, intensity is higher；Wetted constructures temperature be higher than most strong aging temperature, at this time intensity it is slightly lower but have compared with
High toughness.PH13-8Mo is for cold heading and machining fastener, aircraft components, nuclear reactor component and petrochemical industry dress
It is standby.
PH13-8Mo stainless steel is used mainly as high-strength steel, rarely has corresponding self-protection flux-cored wire, institute at present
To develop matching wlding with regard to reasonably necessary.
Summary of the invention
The object of the present invention is to provide a kind of PH13-8Mo stainless steel Self-protecting welding wires, are used for PH13-8Mo martensite
The welding of aged stainless steel does not have to additional protection gas, and spatter is small, postwelding is not necessarily to cleaning, has good welding usability.
The present invention also provides the preparation methods of above-mentioned welding wire.
The technical scheme adopted by the invention is that PH13-8Mo stainless steel Self-protecting welding wire, by crust and medicine core group
At medicine core is composed of the following components by mass percentage:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, ferrosilicon and each 0.5%-1% of ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%.
The features of the present invention also characterized in that:
The filling rate of medicine core is 20%-28%.
Skin material is 304 stainless steel belts.
Another technical solution of the present invention is a kind of preparation of PH13-8Mo stainless steel Self-protecting welding wire
Method is specifically implemented according to the following steps:
Step 1 weighs the following raw material respectively by mass percentage:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, each 0.5%-1% of ferrosilicon, ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%；Wherein, weighed all raw materials are all
It is powdered；
Step 2 mixes barium fluoride weighed in step 1, quartz, lithium carbonate, aluminium oxide and magnesia, obtains mixing medicine
Powder A is added into mixed powder A and sodium silicate binder and is uniformly mixed, be placed in heating furnace and be sintered, then successively ground
Mill, sieving processing, obtain mixed powder B, wherein the quality of the sodium silicate binder of addition is the 15%- of mixed powder A mass
21%；
Step 3, by metal molybdenum weighed in step 1, metallic nickel, crome metal, electrolytic aluminium, iron powder, magnesium alloy, golden red
Stone, zircon sand, ferrosilicon, ferrotianium, boron powder and rare earth are mixed with mixed powder B made from step 2, are dried after mixing evenly, are obtained medicine
Core powder；
Step 4 weighs crust, by crust be placed in flux-cored wire forming machine put band machine on, crust is rolled into U-type groove,
Then the medicine core powder obtained through step 3 is added into U-type groove, then is obtained U-type groove crust closure, drawing by molding machine
Flux-cored wire semi-finished product；
Step 5 the flux-cored wire semi-finished product that step 4 is prepared is straightened with wire drawing machine, disk Cheng Yuanpan, sealed package,
Finally obtain PH13-8Mo stainless steel Self-protecting welding wire.
In step 2: sintering temperature is 600 DEG C -800 DEG C, sintering time 4h-6h.
In step 3: drying temperature is 200 DEG C -300 DEG C, drying time 2h-3h.
In step 4: skin material is 304 stainless steel belts.
In step 4: the filling rate of medicine core is 20%-28%.
The beneficial effects of the present invention are:
1. PH13-8Mo stainless steel of the present invention is compared with Self-protecting welding wire with stainless steel electrode, solid welding wire, there is weldering
Connect splashing less, the advantages of appearance of weld is beautiful, good welds processing performance；
2. medicine core generates slag using mineral slag system, the molten bath formed when welding is protected, self-shield is played
Effect has saving and protection gas and higher production efficiency, and the weld seam removability of slag is good, can be used for continuous wire feed automatic welding
Machine；
3. PH13-8Mo stainless steel of the present invention is simple with the preparation method of Self-protecting welding wire, easy to operate, it is suitable for certainly
Dynamic welding machine, production efficiency with higher.
Specific embodiment
The present invention is described in detail With reference to embodiment.
The technical scheme adopted by the invention is that a kind of PH13-8Mo stainless steel Self-protecting welding wire, by crust and medicine
Core composition, medicine core are composed of the following components by mass percentage:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, ferrosilicon and each 0.5%-1% of ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%.
Wherein, in medicine core each component effect:
1, crome metal, molybdenum are the element for promoting ferrite to form and stablize in deposited metal, and electrolytic aluminium, which has, promotes needle
The formation of columnar ferrite, metallic nickel promote the formation of austenite, make to have the tendency that generating austenite in weld seam, four kinds of metal powders are matched
It closes and uses, so that austenite and ferrite are proportional in weld seam；
2, crome metal has certain effect to the raising of intensity, steel can be made to generate one kind in the medium with oxidisability
With the passivating film of the ferrochrome oxide of matrix firm connection；Influence of the chromium to intensity, which shows as suitable chromium, to improve
The obdurability of weld metal；
3, metallic nickel can also play certain solution strengthening effect in weld metal, acicular ferrite can be promoted to analyse
Out, and crystal grain is refined；
4, it is electrolysed aluminium powder, the toughness for improving welding point is played in weld metal；
5, magnesium aluminum-alloy powder, in conjunction with the oxygen in air to have the function that remove the oxygen element in molten bath, so that weldering
Other components in seam are protected；
6, barium fluoride is a kind of good gas making, slag making, dehydrogenation material, is suitable for the special smelting of self-protection flux-cored wire
The needs of golden process and good appearance of weld can carry out gas making and slag making, to form more effective gas-slag joint
Self-shield environment, such welding wire are adapted to special welding environment；
7, rutile can make welding wire medicine core realize the characteristic of " short slag " during welding fusing, to weld seam melt
Sprawling for metal is highly beneficial, can also play the role of stable electric arc.Suitable rutile not only stabilising arc, but also reduction welding
It splashes, moreover it is possible to promote sprawling for molten pool metal, make appearance of weld well to reduce the formation of stomata in weld seam；
8, zircon sand, fusing generate two kinds of variants, a kind of monoclinic crystal, another stable quadratic crystal.Crystalline transformation
About 7% variation occurs for volume, can improve the removability of slag energy of solder flux using this characteristic, is conducive to de- slag；
9, aluminium oxide, quartz, magnesia have the function of slag making, and in welding, the slag of formation can be played molten bath
Protective effect；
10, lithium carbonate can inhibit the generation of nitrogen pore, the boiling of Li under conditions of not influencing deposited metal impact flexibility
Point is very low, and will not remain in deposited metal influences the microstructure and mechanical property of deposited metal；
11, rare earth, boron powder play the role of refining crystal grain in the deposited metal of weld seam；
The filling rate of medicine core is 20%-28%；
Skin material is 304 stainless steel belts；
The PH13-8Mo stainless steel preparation method of Self-protecting welding wire of the present invention, is specifically implemented according to the following steps:
Step 1 weighs the following raw material respectively by mass percentage:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, each 0.5%-1% of ferrosilicon, ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%；
Wherein, weighed all raw materials are all powdered；
Step 2 mixes barium fluoride weighed in step 1, quartz, lithium carbonate, aluminium oxide and magnesia, obtains mixing medicine
Powder A is added into mixed powder A and sodium silicate binder and is uniformly mixed, be placed in heating furnace and be sintered, sintering temperature is
600 DEG C -800 DEG C, sintering time 4h-6h；It successively carries out being ground up, sieved processing again, obtains mixed powder B, wherein addition
The quality of sodium silicate binder is the 15%-21% of mixed powder A mass；
Step 3, by metal molybdenum weighed in step 1, metallic nickel, crome metal, electrolytic aluminium, iron powder, magnesium alloy, golden red
Stone, zircon sand, ferrosilicon, ferrotianium, boron powder and rare earth are mixed with mixed powder B made from step 2, are dried after mixing evenly, drying temperature
Degree is 200 DEG C -300 DEG C, and drying time 2h-3h obtains medicine core powder；
Step 4 weighs 304 stainless steel belt crusts, by crust be placed in flux-cored wire forming machine put band machine on, by crust
It is rolled into U-type groove, then adds the medicine core powder that obtains through step 3 into U-type groove, the filling rate of medicine core be (medicine core and welding wire
Mass ratio) it is 20%-28%, then U-type groove crust closure, drawing are obtained by flux-cored wire semi-finished product by molding machine；
Step 5 the flux-cored wire semi-finished product that step 4 is prepared is straightened with wire drawing machine, disk Cheng Yuanpan, sealed package,
Finally obtain PH13-8Mo stainless steel Self-protecting welding wire；
Generally, the diameter of flux-cored wire is drawn to 1.2mm-2.0mm；
Wherein, rare earth main component is cerium oxide.
Embodiment 1
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 250g, quartz 30g, lithium carbonate 10g, aluminium oxide 35g and magnesia 20g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 600 DEG C, sintering time 4h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140 mesh
(i.e. 109 μm), obtain mixed powder B；
Step 2, weigh powdered: metal molybdenum 180g, metallic nickel 60g, crome metal 50g, electrolytic aluminium 40g, iron powder 60g,
Magnesium alloy 45g, rutile 100g, zircon sand 80g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 2h after mixing evenly, baking temperature be 200 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 20%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 1.2mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 1 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
853Mpa, yield limit 641Mpa, the contraction percentage of area 58%, ballistic work 58J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
Embodiment 2
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 240g, quartz 30g, lithium carbonate 10g, aluminium oxide 35g and magnesia 10g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 700 DEG C, sintering time 5h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140 mesh
(i.e. 109 μm), obtain mixed powder B；
Step 2, weigh powdered: metal molybdenum 170g, metallic nickel 70g, crome metal 50g, electrolytic aluminium 40g, iron powder 70g,
Magnesium alloy 55g, rutile 110g, zircon sand 70g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 2.5h after mixing evenly, baking temperature be 250 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 22%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 1.4mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 2 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
877Mpa, yield limit 663Mpa, the contraction percentage of area 61%, ballistic work 61J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
Embodiment 3
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 250g, quartz 30g, lithium carbonate 10g, aluminium oxide 35g and magnesia 10g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 800 DEG C, sintering time 6h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140 mesh
(i.e. 109 μm), obtain mixed powder B；
Step 2, weigh powdered: metal molybdenum 170g, metallic nickel 60g, crome metal 40g, electrolytic aluminium 50g, iron powder 50g,
Magnesium alloy 75g, rutile 120g, zircon sand 70g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 3h after mixing evenly, baking temperature be 300 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 24%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 1.6mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 3 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
857Mpa, yield limit 632Mpa, the contraction percentage of area 60%, ballistic work 59J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
Embodiment 4
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 240g, quartz 30g, lithium carbonate 10g, aluminium oxide 25g and magnesia 10g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 750 DEG C, sintering time 4.5h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140
Mesh (i.e. 109 μm), obtains mixed powder B；
Step 2, weigh powdered: metal molybdenum 170g, metallic nickel 70g, crome metal 50g, electrolytic aluminium 50g, iron powder 30g,
Magnesium alloy 75g, rutile 110g, zircon sand 80g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 2.5h after mixing evenly, baking temperature be 200 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 24%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 1.6mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 4 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
831Mpa, yield limit 622Mpa, the contraction percentage of area 48%, ballistic work 55J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
Embodiment 5
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 250g, quartz 30g, lithium carbonate 10g, aluminium oxide 35g and magnesia 10g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 700 DEG C, sintering time 4h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140 mesh
(i.e. 109 μm), obtain mixed powder B；
Step 2, weigh powdered: metal molybdenum 170g, metallic nickel 60g, crome metal 40g, electrolytic aluminium 50g, iron powder 50g,
Magnesium alloy 75g, rutile 120g, zircon sand 70g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 3h after mixing evenly, baking temperature be 250 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 26%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 1.8mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 5 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
889Mpa, yield limit 689Mpa, the contraction percentage of area 54%, ballistic work 64J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
Embodiment 6
Prepare PH13-8Mo stainless steel Self-protecting welding wire:
Step 1, it weighs powdered: barium fluoride 250g, quartz 20g, lithium carbonate 10g, aluminium oxide 30g and magnesia 10g
Mixing, obtains mixed powder A, is added and 200g sodium silicate binder and is uniformly mixed into mixed powder A, be placed on heating furnace
Middle sintering, sintering temperature are 750 DEG C, sintering time 4h, then successively carry out being ground up, sieved processing, and the mesh number of sieving is 140 mesh
(i.e. 109 μm), obtain mixed powder B；
Step 2, weigh powdered: metal molybdenum 160g, metallic nickel 70g, crome metal 50g, electrolytic aluminium 40g, iron powder 90g,
Magnesium alloy 65g, rutile 110g, zircon sand 60g, ferrosilicon 10g, ferrotianium 10g, boron powder 10g and rare earth 10g and step 1 are made
Mixed powder B mixing, be put into drying oven toast 2h after mixing evenly, baking temperature be 220 DEG C, obtain medicine core powder；
Step 3,304 stainless steel belts are weighed, wherein width of steel band is 7mm, with a thickness of 0.3mm, is placed on flux-cored wire
Putting on band machine for molding machine, is rolled into U-type groove for carbon steel steel band by molding machine, then adds into U-type groove and obtain through step 2
Medicine core powder, the filling rate control of medicine core is 28%, then carbon steel steel band is rolled by U-type groove by molding machine and rolls closure,
Drawing, final drawing flux-cored wire to diameter are 2.0mm, obtain flux-cored wire semi-finished product；
Step 4, finally the flux-cored wire semi-finished product that step 3 is prepared are straightened with wire drawing machine, disk Cheng Yuanpan, sealing packet
Dress, finally obtains PH13-8Mo stainless steel Self-protecting welding wire.
Flux-cored wire made from method using embodiment 6 is suitable for flux cored wire arc welding (FCAW-S), without additional
Protective gas.Welding current is 165A-195A, weldingvoltage 19.5V-21.5V.The tensile strength of welding point is
841Mpa, yield limit 634Mpa, the contraction percentage of area 52%, ballistic work 59J.Performance meets PH13-8Mo martensite ag(e)ing
The requirement of stainless steel.
PH13-8Mo stainless steel Self-protecting welding wire of the present invention, is made of crust and medicine core, and skin material is 304 stainless
Steel steel band；Medicine core generates slag using mineral slag system, protects the molten bath formed when welding, plays the work of self-shield
With with saving and protection gas and higher production efficiency, and the weld seam removability of slag is good, can be used for continuous wire feed automatic welder；
It is compared with stainless steel electrode, solid welding wire, has the advantages that spatter is few, appearance of weld is beautiful, good welds processing performance；
The present invention also provides the preparation method of above-mentioned PH13-8Mo stainless steel Self-protecting welding wire, medicine core material is gold
Belonging to molybdenum, metallic nickel, crome metal, electrolytic aluminium, barium fluoride, rutile, zircon sand, magnesium aluminum-alloy powder, aluminium oxide is quartzy, lithium carbonate,
Magnesia, ferrosilicon, ferrotianium, boron powder, rare earth, remaining is iron powder；By medicine core be added to U-type groove that 304 stainless steel belts are rolled into,
It rolls closure, drawing, be straightened, disk Cheng Yuanpan, sealed package can be obtained, and preparation method is simple, it is easy to accomplish.
Claims (4)
1.PH13-8Mo stainless steel Self-protecting welding wire, which is characterized in that be made of crust and medicine core, medicine core presses quality percentage
Than composed of the following components:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, ferrosilicon and each 0.5%-1% of ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%；
The filling rate of the medicine core is 20%-28%；
The skin material is 304 stainless steel belts.
2. a kind of preparation method of PH13-8Mo stainless steel Self-protecting welding wire as described in claim 1, which is characterized in that
It is specifically implemented according to the following steps:
Step 1 weighs the following raw material respectively by mass percentage:
Metal molybdenum 15%-20%, metallic nickel 4%-7%, crome metal 3%-6%, electrolytic aluminium 3%-5%, barium fluoride 22%-
28%, rutile 10%-12%, zircon sand 8%-10%, magnesium aluminum-alloy powder 4%-7%, aluminium oxide 3%-5%, quartzy 2%-
5%, lithium carbonate 1%-2.5%, magnesia 1.5%-3%, each 0.5%-1% of ferrosilicon, ferrotianium, boron powder 1%-1.5%, rare earth
0.5%-1.5%, remaining is iron powder, and the sum of above constituent mass percentage is 100%；
Wherein, weighed all raw materials are all powdered；
Step 2 mixes barium fluoride weighed in step 1, quartz, lithium carbonate, aluminium oxide and magnesia, obtains mixed powder A,
Be added and sodium silicate binder and be uniformly mixed into mixed powder A, be placed in heating furnace and be sintered, then successively ground,
Sieving processing, obtains mixed powder B；
Step 3, by metal molybdenum weighed in step 1, metallic nickel, crome metal, electrolytic aluminium, iron powder, magnesium alloy, rutile, zirconium
Sand, ferrosilicon, ferrotianium, boron powder and rare earth are mixed with mixed powder B made from step 2, are dried after mixing evenly, and medicine core powder is obtained
End；
Step 4 weighs crust, by crust be placed in flux-cored wire forming machine put band machine on, crust is rolled into U-type groove, then
The medicine core powder obtained through step 3 is added into U-type groove, then U-type groove crust closure, drawing are obtained by medicine core by molding machine
Welding wire semi-finished product；
Step 5 the flux-cored wire semi-finished product that step 4 is prepared is straightened with wire drawing machine, disk Cheng Yuanpan, sealed package, finally
Obtain PH13-8Mo stainless steel Self-protecting welding wire；
In the step 2: sintering temperature is 600 DEG C -800 DEG C, sintering time 4h-6h；
In the step 3: drying temperature is 200 DEG C -300 DEG C, drying time 2h-3h.
3. the preparation method of PH13-8Mo stainless steel Self-protecting welding wire according to claim 2, in the step 4:
Skin material is 304 stainless steel belts.
4. the preparation method of PH13-8Mo stainless steel Self-protecting welding wire according to claim 2, in the step 4:
The filling rate of medicine core is 20%-28%.
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| CN107877035B (en) * | 2017-11-30 | 2020-02-04 | 桂林航天工业学院 | Stainless steel flux-cored wire and production method thereof |
| CN108213672A (en) * | 2018-03-06 | 2018-06-29 | 盐城工学院 | A kind of dedicated welding robot of airconium alloy plates |
| CN110064863A (en) * | 2019-05-22 | 2019-07-30 | 张家港市亨昌焊材有限公司 | A kind of flux-cored wire formula and technique |
| CN110539101A (en) * | 2019-09-29 | 2019-12-06 | 鞍钢集团北京研究院有限公司 | Open arc self-protection flux-cored wire for continuous casting roller surfacing of fan-shaped section of continuous casting machine and manufacturing method thereof |
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