CN108367377A - The method that gas metal arc welding meets (GMAW) is carried out to nitridation steel part using cored wire - Google Patents
The method that gas metal arc welding meets (GMAW) is carried out to nitridation steel part using cored wire Download PDFInfo
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- CN108367377A CN108367377A CN201680071309.7A CN201680071309A CN108367377A CN 108367377 A CN108367377 A CN 108367377A CN 201680071309 A CN201680071309 A CN 201680071309A CN 108367377 A CN108367377 A CN 108367377A
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
-
- 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
-
- 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
-
- 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
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/008—Gears
Abstract
A kind of method for the first component gas metal arc welding formed by nitrated steel to be connected to second component is provided, this method makes the porosity in weld seam reduce.Welding wire using the core including being surrounded by a tube carrys out welding assembly.The material of core is formed by the mild steel of the aluminium comprising 0.7 weight % to 3.0 weight % and 0.7 weight % to the titanium of 1.5 weight %.The material of pipe is formed by mild steel completely.During soldering, nitrogen from nitrated steel and the aluminium of welding wire and titanium in conjunction with and form aluminium nitride and titanium nitride, the nitrogen bubble of Higher porosity can be caused without being formed.This method can be used for the component used in welding of automotive application, such as welding gear ring portion and the shell portion of flexible disk, but can also alternatively be used for other automobile applications, or be used for non-automotive applications.
Description
Cross reference to related applications
The continuation application of this U.S. part requires the U.S. Patent application No.13/993,244 submitted on June 11st, 2013
Equity, U.S. Patent application No.13/993,244 be on December 19th, 2011 PCT/CA11/01390 submitted into
Enter thenational phase application, which requires in the U.S. Provisional Patent Application submitted on December 17th, 2010
No.61/424,327 priority, during these applications are fully incorporated herein by reference respectively.The continuation application of this U.S. part is also
It is required that the U.S. Provisional Patent Application No.62/115 submitted on 2 13rd, 2015,859 equity, the US provisional patent Shen
It please be during No.62/115,859 be fully incorporated herein by reference.
Technical field
The present invention generally relates to welded, say like to nitrated steel to surface treated metal parts
Component carries out the welding structure that gas metal arc welding connects the method for (GMAW) and formed by surface treated metal parts.
Background technology
Steel part used in automobile application is usually engaged by welding technique.LASER BEAM WELDING is that a kind of provide is permitted
More advantages say like low_input_power, short cycle and good cosmetic welding joining technique.The processing is frequently used for high-volume and answers
In, it say like for welding together the power system components in auto industry.In this way, it is possible to relatively
Low is produced into component of the original manufacture comprising multiple grades or a plurality of types of materials.
It is the another of steel part used in welding metal component, such as automobile application that gas metal arc welding, which connects,
A kind of method.The welding technique be included between the joint portion between consumable wire electrode and two metal parts formed electric arc with
Material from the wire electrode is transferred to joint portion.Heated filamentary material can pass through a variety of different methods, example
As globular transfer, short circuiting transfer, spray transfer and pulsed spray transfer are shifted.The material at joint portion is transferred to from wire electrode
Material make both parts along joint portion partial melting and form weld seam.The weld seam includes the material from both parts
With the mixture of the material from consumable wire electrode.GMAW technologies are comparatively faster and can be automatic.Therefore,
GMAW technologies are typically optimization technique for the component in welding of automotive industry.
Usually it is also expected to the component that welding is formed by nitrated steel.Nitridation is one be diffused into nitrogen in the surface of steel part
Kind heat treatment.The nitridation of steel allows to become increasingly prevalent using the thinner parts of weight saving due to it.Nitridation also due to
It is expected to carry out which increase the tensile strength of component, yield strength and hardness.Nitrogen treatment may include gas nitriding, salt
Bath nitridation or plasma nitrided.However, when using GMAW to nitridation steel part, generated weld seam has by coming from nitrated steel
Nitrogen bubble caused by undesirable Higher porosity.This Higher porosity can influence the quality and performance and therefore of weld seam
It should be avoided by.It is before GMAW processing by the nitridation in welding region for avoiding a kind of technology of Higher porosity
The peripheral region that layer is removed from the surface of steel part and then masking nitrogenizes steel part.Therefore, weld seam not wrapping by component
The part for including nitration case is formed, and therefore avoids the nitrogen bubble that can lead to the undesirable porosity in welding.However, going
Except nitration case and shelter the cost needed for peripheral region and the time is unsatisfactory.
Invention content
One aspect of the present invention provides a kind of method for carrying out LASER BEAM WELDING to nitridation steel part.This method
Include being relatively arranged two steel parts to be shaped as waiting for soldered joint portion, wherein in the two steel parts extremely
A few steel part is nitridation steel part.This method then includes forming weld seam along joint portion so as to by the two steel portions
Part is bonded together.The forming step includes：Laser beam irradiation position is set to exist along joint portion traveling, laser beam along welding direction
It includes being heated to from the two steel parts to irradiate the two steel parts at irradiation position and formed in joint portion
The weldpool of the molten steel of welding temperature；And filling silk is made to advance along joint portion along welding direction, filling silk has core, the core
Include the metal composites of titaniferous, is opened before filling silk is located at laser beam irradiation position in welding direction and with beam separation
Following distances：The distance is small enough to so that the tip portion for filling silk is directly drawn along welding direction in the front of laser beam
Enter in weldpool.The melted material of tip portion from filling silk is mixed into weldpool, and is present in the melted material
Titanium is combined and under welding temperature with the nitrogen from nitridation steel part in forming titanium nitride in weldpool.
Another aspect of the present invention provides a kind of method for carrying out LASER BEAM WELDING to nitridation steel part, the party
Method includes：Two steel parts are relatively arranged and are shaped as waiting for soldered joint portion, in the two steel parts at least
One steel part is nitridation steel part；Irradiate the two steel parts along joint portion using laser beam, so as to by the two
The material in each steel part in steel part is heated to welding temperature and thus forms weldpool in joint portion；And it will
Titanium is introduced into the front edge portion of weldpool, and the front edge portion of weldpool is located at the front of laser beam in welding direction.The titanium being introduced into
With from nitridation steel part be discharged into the nitrogen in weldpool in conjunction with and under welding temperature in forming titanium nitride in weldpool.
Another aspect of the present invention provides a kind of for carrying out LASER BEAM WELDING to surface treated steel part
Method, this method includes：Two steel parts are relatively arranged and are shaped as waiting for soldered joint portion, the two steel portions
At least one of part steel part is surface treated steel part；And along joint portion formed weld seam so as to by this two
A steel part is bonded together.The forming step includes：So that laser beam irradiation position is advanced along joint portion along welding direction,
Laser beam irradiates the two steel parts at irradiation position and is formed comprising from the two steel parts in joint portion
It is heated to the weldpool of the molten steel of welding temperature；And filling silk is made to advance along joint portion along welding direction.Fill silk tool
There is core, which includes the metal composites containing following components：The component be selected to from surface treated steel part
Be discharged into substance in weldpool and form compound, and fill silk be located in welding direction before laser beam irradiation position and with
Beam separation opens following distances：The distance is small enough to so that the tip portion for filling silk is heated during the formation of weldpool
At more than its melting temperature.The melted material of tip portion from filling silk is mixed into weldpool, and is present in the melting
Component in material with from the substance that surface treated steel part discharges in conjunction with and under welding temperature in being formed in weldpool
Compound.
An additional aspect of the present invention provides a kind of for carrying out LASER BEAM WELDING to surface treated steel part
Method, this method includes：Two steel parts are relatively arranged and are shaped as waiting for soldered joint portion, the two steel portions
At least one of part steel part is surface treated steel part；Using laser beam the two steel are irradiated along joint portion
Matter component, so that the material in each steel part in the two steel parts is heated to welding temperature and weldering is consequently formed
Pond；And metal component is introduced into the front edge portion of weldpool, the front edge portion of weldpool is located at laser beam in welding direction
Front.The metal component being introduced into from surface treated steel part be discharged into the substance in weldpool in conjunction with and welding temperature
In forming stable compound in weldpool under degree.
The present invention also provides a kind of for the component gas metal arc welding formed by nitrated steel to be met (GMAW) to another
The method of one component, this method is without removing nitration case or being sheltered, and so that cost reduction and efficiency raising.
This method includes that the first component that will be formed by nitrated steel is arranged along second component in the first component and second
Component provides joint portion；And electric arc is formed between welding wire and joint portion.The step of electric arc is formed between welding wire and joint portion
Rapid includes so that the material of welding wire is transferred to joint portion and making the material molten of at least part of each component and welding wire to be formed
Weld seam.The material of welding wire is iron-based material and includes aluminium and/or titanium.Preferably, welding wire includes by the iron with aluminium and/or titanium
The core that sill is formed, and the pipe that the core is formed by iron-based material surrounds.The nitrogen being present in the nitrated steel of melting is welding
Chi Zhongyu melts the aluminium of welding wire and/or titanium combines and therefore forms aluminium nitride (AlN) and/or titanium nitride (TiN), without forming meeting
Lead to the nitrogen bubble of undesirable Higher porosity.
Another aspect of the present invention, which provides, a kind of connecing the welding structure to be formed by gas metal arc welding, wherein
Welding wire includes aluminium and titanium.The welding structure includes the first component formed by nitrated steel and is soldered to second of the first component
Part.The weld seam formed between these two parts includes that aluminium nitride and titanium nitride are not expected without present in existing structure
Higher porosity.
Description of the drawings
It will readily perceived that by referring to other advantages described in detail below when being considered in conjunction with the accompanying, of the invention, simultaneously
It becomes better understood, in the accompanying drawings：
Fig. 1 is the simplification stereogram for the laser welding system for being adapted for carrying out method according to the embodiment of the present invention；
Fig. 2 is the schematic perspective view for showing method for laser welding according to the embodiment of the present invention；
Fig. 3 is that the cross section for the laser welded seam that the method using the prior art between illustrating nitridation steel part is formed is taken turns
Wide schematic diagram；
Fig. 4 is the Laser Welding that the method for use according to the embodiment of the present invention between illustrating nitridation steel part is formed
The schematic diagram of the cross-sectional profiles of seam；
Fig. 5 be the second component for including the first component formed by nitrated steel and being formed by medium carbon steel welding structure and
For formed according to an illustrative embodiment of the invention weld seam welding wire side cross-sectional view；
Fig. 6 shows the low-porosity weld seam formed according to an illustrative embodiment of the invention；And
Fig. 7 shows the high porosity weld seam formed according to comparative approach.
Specific implementation mode
Offer is described below so that those skilled in the art can manufacture and use the present invention, and be described below
It is provided under the background of specific application and its demand.To the various remodeling of disclosed embodiment for those skilled in the art
For will be apparent, and without departing substantially from the scope of the present invention, herein defined by General Principle can be with
Applied to other embodiment and application.Therefore, the present invention is without intending to be limited to disclosed embodiment, but should be assigned
Give the widest range consistent with principle disclosed herein and feature.
Referring to Fig.1, Fig. 1 shows the letter for the laser welding system for being adapted for carrying out method according to the embodiment of the present invention
Change stereogram.Particularly, the system of Fig. 1 is considerably inhibited nitridation steel part and other kinds of surface treated metal
Component.Include generally lasing light emitter (not shown) with the system shown in 100, say like disk laser.As specific and
Unrestricted example, lasing light emitter are the Trumpf of the peak power output with 4kW at the wavelength of 1030nm
TruDisk4002 type lasers.The optical fiber (not shown) transmission laser beam for the use of core diameter being 600 μm simultaneously uses suitable laser
Plumb joint 104 say like Trumpf D70 laser welding heads by laser beam focus on the surface of the workpiece.In this example,
Both the collimation lens and condenser lens of plumb joint 104 have the focal length of 200mm.Therefore, size of the beam spot 106 in focal point
It is 0.6mm in diametrically.Optionally, it is replaced above using another suitable lasing light emitter and/or another suitable plumb joint
The specific example discussed.
In system 100 shown in FIG. 1, plumb joint 104 is mounted on manipulator (not shown), say like ABB
On the end effector of 4400 type manipulators of IRB.For example, manipulator is programmed to make the movement of plumb joint 104 in gear ring portion
It is welded between 108 and thin disk 110 made of stamped steel and forms flexible disk.As discussed above, gear ring portion 108 is logical
Processing is often carbonized to increase the hardness and wearability of its tooth, and punching press disk 110 is made of mild steel and is nitrogenized.In this example
In, punching press disk 110 is by gas nitriding and by gyro-finishing, the minimum 0.45mm of diffusion thickness of nitrogen, and compound layer thickness
≧0.015mm.The surface with nitration case of punching press disk 110 is one in the butting surface in the joint portion being hermetically laser welded
Butting surface.
Referring now still to Fig. 1, the filling silk 112 with metal core is fed using wire feeder 114 so that be also commonly referred to as filling out
The tip portion of the filling silk 112 of angle silk is located near beam spot 106.Wire feeder 114 is mounted on plumb joint 104 so that
Wire feeder 114 is fixed relative to the position of plumb joint 104.It is provided in known manner via protective gas nozzle 116
Protective gas, to prevent welding region from aoxidizing.
Referring now to Fig. 2, Fig. 2 shows the schematic isometrics of laser welding processing according to the embodiment of the present invention
Figure.During laser welding processing, filling silk 112, which is located in welding direction at the position in 204 front of laser beam, to be fed into
In weldpool 200 so that the melted material in joint portion between the filling wire material 202 and just soldered component of melting is effective
Ground mixes.When laser beam 204 irradiates the surface of workpiece 206a and 206b and forms weldpool 200, generated heat is enough to make filling
Silk 116 melts so that the tip portion of filling silk 112 is deposited directly in the front edge portion of weldpool 200.As specific and non-limit
The example of property processed, filling silk have stainless steel sheath and the metal core containing titanium.Suitable and commercially available filling silk (comes from
The filling silk of Select Arc companies) there are following metal cores：Metal core % by weight is counted：0.03 C, 0.60
Mn, 0.01 P, 0.01 S, 0.69 Si, 11.90 Cr, 1.00 Ti.
Undesirable to be bound by any particular theory, following the description is considered applicable.Two be just welded together
The material of a component is melted when laser beam 204 is moved along welding direction under the action of laser beam 204, to form movement
Weldpool 200, wherein described two components in this example be gear ring portion 108 and punching press disk 110.Recognize in order that, punching press disk
Decomposed at a high temperature of 110 nitration case is in the weldpool 200, to release nitrogen, nitrogen then with from the filling silk 112 with metal core
The titanium of introducing reacts and forms titanium nitride.Titanium nitride has very high fusing point (2950 DEG C) and in 200 memory of weldpool
It is chemically stable under the conditions.Therefore, when laser beam 204 is advanced along welding direction, nitrogen remain bonded to titanium and
It is cooled down in weldpool 200 and will not form bubble when finally solidifying.
Fig. 3 and Fig. 4 is to using the method (Fig. 3) of the prior art to exist with method (Fig. 4) according to the embodiment of the present invention
The laser welded seam formed between nitridation steel part is compared.As shown in Figure 3, the shape between gear ring portion 108 and punching press disk 110
At weld seam 300 include larger gap or hole 302, these gaps or hole 302 correspond to the prisoner during being quickly cooled down of weldpool 200
The occlusion nitrogen bubble obtained.Particularly, these larger gaps or hole 302 are present in the side using the prior art without filling silk
In the entire laser welded seam that method is formed.Although weld seam 300 is aesthetically acceptable, the presence in gap or hole 302 makes
It is unacceptable in structure to obtain weld seam.On the other hand, the weld seam 400 illustrated in Fig. 4 is in compared to the weld seam illustrated in Fig. 3
Reveal the porosity of reduction.In fact, the main body of weld seam 400 does not include any larger gap or hole.Only in the root of weld seam 400
Nearby there is recognizable smaller gap in portion, this is considered as due to the material from filling silk 112 and the melting material from workpiece
Material cannot mix at the bottom of weld seam 400 and be occurred.That is, the existing smaller sky near the root of weld seam 400
Gap will not have an adverse effect to the intensity of weld seam 400.For example, with 8 sections of weld seams being equally spaced along joint interface
In the destructive testing of finished product flexible disk, which can bear the power more than 37,000 pounds before welding seam breaking.In order to say
The nominal rating of this bright point, the pushing test of the component is 10,000 pound.
The alloy compositions of the filling silk 112 with metal core can be prepared for steel part and specific coating to be bonded on
Together.In this way, it is possible to using the titanium in the filling silk 112 with metal core by steel part and nitration coating layer as above as
Specific and unrestricted example is bonded together as discussing.Optionally, since aluminium nitride (AlN) also has higher point
Solution temperature and fusing point and be stable compound in weldpool, therefore titanium is replaced by aluminium in the filling silk 112 with metal core
To solve the problems, such as nitrogen associated with laser welding.Also it is alternatively possible in the filling silk with metal core provide zinc for
To coated with aluminium steel, say likeSteel carries out LASER BEAM WELDING.Aluminium is with low melting point and aluminium and liquid Zn
Fast reaction.In weldpool, aluminum and zinc forms the liquefied compound with very high evaporating temperature (about 2450 DEG C), to anti-
Only or reduce aluminium and iron frangible compounds formation.Of course, it is also contemplated that other modifications.
Another aspect provides one kind manufacturing welding structure for meeting (GMAW) by gas metal arc welding
20 effective and cost-effective method, wherein at least one component 22,24 of structure 20 is formed by nitrated steel.This method
It is provided in the case where each section of nitration case or masking nitridation steel part need not be removed before soldering securely and reliable
Weld seam 26.Improved weld seam 26 is realized by the welding wire 28 comprising aluminium and/or titanium.Preferably, welding wire 28 includes by with aluminium
And/or the core 30 that the iron-based material of titanium is formed, and core 30 is surrounded by the pipe 32 formed by iron-based material.In the soldering phase
Between, the nitrogen of the melting from nitrated steel mixes with the aluminium of the welding wire 28 of melting and/or titanium and forms aluminium nitride in weld seam 26
(AlN) and/or titanium nitride (TiN) nitrogen bubble of undesirable Higher porosity, can be caused without being formed.
This method, which starts from providing, waits for soldered component 22,24.Although this method generally include it is as shown in Figure 5 that
The first component 22 is soldered to second component 24 by sample, but this method can also include alternatively welding more than two component
Together.In the illustrative embodiments, the first component 22 is being claimed for 400HV1 by nitrated steel, particularly by case hardness
It is formed for High-Strength Low-Alloy (HSLA) steel of 420XF.It is also possible, however, to use various other nitrated steel compositions.This is exemplary
The second component 24 of embodiment is also formed by steel, particularly the medium carbon steel by being referred to as 1045 or 1050 impewdance matching steel.So
And it can also be formed using various other steel or even different metals form to form second component 24.For example, second
Part 24 can also be formed by nitrated steel or second component 24 can be formed by another metal different from the first component 22.
According to the intended application of welding structure 20, the first component 22 and second component 24 can have a variety of different geometry
Structure.In the exemplary embodiment, the first component 22 and second component 24 are designed to provide for making in the motor vehicle
Two-piece type flexible disk.The first component 22 formed by nitrated steel is used as the shell portion of flexible disk, and is formed by medium carbon steel
Second component 24 be used as the gear ring portion of flexible disk.Gear ring portion includes multiple teeth, and the steel of these teeth is usually and gear ring portion
Rest part it is the same not by impewdance matching.However, the first component 22 and second component 24 can be designed to it is any its
The such as dynamical system application of the automobile application of his type, or it is used for non-automotive applications.In addition, according to the method for the present invention can be with
Weld more than two component.With need remove nitration case and/or shelter nitrated steel other methods compared with, by component 22,
24 weld together before need not be to the preparation of component 22,24.
This method then meets (GMAW) by gas metal arc welding including the use of welding wire 28 and is soldered to the first component 22
Second component 24.At least part of welding wire 28 includes at least one of aluminium and titanium but preferably includes both aluminium and titanium, with
It prevents nitrogen bubble and reduces the porosity in finished product weld seam 26.In the illustrative embodiments being shown in FIG. 5, welding wire 28 includes
The core 30 surrounded by pipe 32.The material of core 30 is formed by mild steel and includes both aluminium and titanium.Aluminium is usually with based on the soft of core 30
The amount of 0.7 weight percent (weight %) of the total weight of steel to 3.0 weight % exist, and titanium is usually with based on the soft of core 30
The amount of the 0.7 weight % to 1.5 weight % of the total weight of steel exists.In the illustrative embodiments, mild steel includes 0.8 weight
Measure the titanium of the aluminium and 0.7 weight % of %.Mild steel also includes about 0.1 weight % of the total weight based on mild steel to 0.3 weight %'s
Carbon and various other alloying elements that usually trace can be contained.For example, other than aluminium and titanium, the mild steel of core 30 may be used also
With the carbon comprising 0.18 weight %, the manganese of 0.80 weight %, the phosphorus of 0.01 weight %, the sulphur of 0.01 weight %, 0.4 weight %
The impurity of silicon, possible trace, and surplus is iron.However, it is possible to use various other form to form the core 30 of welding wire 28,
As long as welding wire 28 includes aluminium and/or titanium.
The pipe 32 of exemplary welding wire 28 is formed by mild steel completely, and the mild steel is also generally comprised based on the mild steel
Total weight about 0.1 weight % to 0.3 weight % carbon and various other alloying elements can be contained.For example, pipe 32
Mild steel can include the carbon of 0.18 weight %, the manganese of 0.80 weight %, the phosphorus of 0.01 weight %, the sulphur of 0.01 weight %, 0.4
The impurity of the silicon of weight %, possible trace, and surplus is iron.However, it is possible to use various other form to form welding wire
28 pipe 32.
The design of the core 30 and pipe 32 of welding wire 28 is for many reasons but preferred compared to other designs, one of them
The reason is that the raising of efficiency.For example, core 30 and pipe 32 reduce aeration quantity, splashing object amount and slag amount during soldering.
Therefore, peripheral part of masking component 22,24, after the welding treatment removal splash and slag and/or cleaning member
22, the time quantum needed for 24 and cost are reduced.Due to the inflation of reduction, splash and slag, core 30 and pipe 32 also provide compared with
High deposition rate and larger speed of welding.It has been found that by the design of core 30 and pipe 32, at least 97% quilt of welding wire 28
It is transferred to component 22,24 and forms weld seam 26.Due to higher deposition rate, needs weight saving and measure reduced welding wire 28
Form weld seam 26.In other words, the consumption of welding wire 28 is reduced.In addition, in the case that using core 30 and pipe 32, the speed of soldering
About 20% can be increased.
Gas metal arc welding connects method and usually carries out in a closed chamber, and gas metal arc welding connects method first
Including two individual components 22,24 are arranged to be in contact with each other to form engagement between the two individual components 22,24
Portion.This method then includes that welding wire 28 is arranged in welding gun and welding gun is directed toward the joint portion between both parts 22,24.
Soldering then includes applying voltage and current to welding wire 28 so that forms electric arc between welding wire 28 and component 22,24.Weldering
Silk 28 is continuously fed via welding gun and accordingly acts as consutrode.Also protective gas is fed to reduce dirt via welding gun
Dye.
When forming electric arc between welding wire 28 and component 22,24, the material molten at the top end of welding wire 28 and transfer
Joint portion to both parts 22,24.The transfer to joint portion of welding wire 28 can be by known in the art various
Method, such as globular transfer, short circuiting transfer, spray transfer and pulsed spray transfer are completed.Melted material from welding wire 28
The part being arranged along joint portion that is very hot and therefore making the first component 22 and second component 24 are arranged along joint portion
Partial melting.Including the melted material of the welding wire 28 of aluminium and titanium mixes with the puddle of component 22,24 and forms weldpool, and
And weldpool solidifies and forms weld seam 26.
As discussed above, aluminium and/or titanium from welding wire 28 mix and shape with the nitrogen from nitrated steel in weldpool
At aluminium nitride and/or titanium nitride, the nitrogen bubble of the undesirable porosity in weld seam 26 can be caused without being formed.Fig. 6 is shown
The low-porosity weld seam 26 that method through the invention is formed.The amount of the aluminium nitride and titanium nitride that are formed in weld seam 26 at least portion
The conversion ratio for dividing ground to depend on aluminium and titanium.The conversion ratio additionally depends on several factors, these factors include the aluminium in welding wire 28
The amount of the nitrogen discharged from the first component 22 with the amount of titanium and during soldering.
The weld seam 26 of finished product structure 20 includes the nitrated steel of the first component 22, the mild steel of second component 24 and welding wire 28
The mixture of mild steel.Only the first component 22 along joint portion smaller portions and second component 24 along the smaller of joint portion
Partial melting and form weld seam 26, and the rest part of each component 22,24 keeps being in solid.In the exemplary embodiment party
In formula, the material of the weld seam 26 in finished product structure 20 includes about 0.3 weight % to 2.9 of the total weight of the material based on weld seam 26
The solid titanium nitride of the solid aluminium nitride of weight % and about 0.3 weight % to 2.9 weight %.However, it is noted that the composition
Only example, and the weld seam 26 of the finished product structure 20 formed according to the method for the present invention can include the aluminium nitride of other amounts
And/or titanium nitride.The presence of aluminium nitride and/or titanium nitride in the weld seam 26 of finished product structure 20 can be penetrated by power dissipation X
Linear light spectrometry (EDS) and X-ray diffraction method (XRD) detect.
The geometry of weld seam 26 can also change according to the geometry of the finished product structure 20 of intended application.However,
The geometry at the joint portion between component 22,24 is had no need to change to form weld seam 26.The exemplary implementation being shown in FIG. 6
In mode, the side of weld seam 26 has the length of about 4.15mm, and the other side has the length of about 3.47mm.
Experiment has been carried out come to the porosity in the weld seam 26 formed using exemplary welding wire 28 and the welding wire shape compared with
At weld seam in porosity be compared.As described above, exemplary welding wire 28 includes the core 30 formed by mild steel and by low-carbon
Steel formed pipe 32, wherein the mild steel have amount be 0.7 weight % to 3.0 weight % aluminium and amount be 0.7 weight % extremely
The titanium of 1.5 weight %.It includes pipe and the core with aluminium and titanium to compare welding wire not.But it includes low-carbon steel material to compare welding wire.It should
22 gas metal arc welding of the first component formed by nitrated steel is connected to by non-nitriding by experiment including the use of exemplary welding wire 28
The second component 24 that steel is formed and 22 gas metal arc welding of the first component that will also be formed by nitrated steel using welding wire is compared
It is connected to the second component 24 formed by non-nitriding steel.Fig. 6 shows the weld seam 26 generated using exemplary welding wire 28, and Fig. 7
It shows using the weld seam 34 for comparing the generation of welding wire 28.This two width figure is clearly show to be subtracted using what exemplary welding wire 28 was realized
Small porosity.Include multiple holes using the weld seam 34 of welding wire formation is compared, and the hole shown has the length of 1.29mm
Degree.The weld seam 26 formed by exemplary welding wire 28 hardly includes hole, and without the hole that length is 1.29mm or bigger.
Obviously, according to teachings above, many remodeling of the invention and modification are possible, and these remodeling of the present invention
Other modes other than in a manner of as specifically described it can implement within the scope of the invention with modification.
Claims (20)
1. a kind of method for welding assembly includes the following steps：
By the first component formed by nitrated steel along second component be arranged with the first component and the second component it
Between joint portion is provided；
Electric arc is formed between welding wire and the joint portion；
The step of forming the electric arc between the welding wire and the joint portion includes that the material of the welding wire is made to be transferred to institute
It states joint portion and makes the material molten of at least part of each component and the welding wire to form weld seam along the joint portion,
Wherein, the material of the welding wire is iron-based material and includes aluminium and/or titanium.
2. according to the method described in claim 1, wherein, at least part of the iron-based material of the welding wire includes based on described
0.7 weight percent (weight %) of the total weight of iron-based material to 3.0 weight % aluminium and 0.7 weight % to 1.5 weight %
Titanium.
3. according to the method described in claim 1, wherein, the welding wire includes the core being surrounded by a tube, the material of the core includes
Aluminium and/or 0.7 weight % with 0.7 weight % to 3.0 weight % to the titanium of 1.5 weight % iron-based material, and it is described
The material of pipe is formed by another iron-based material.
4. according to the method described in claim 3, wherein, it is based on the total of the iron-based material that the iron-based material of the core, which includes amount,
The carbon of the 0.1 weight % to 0.3 weight % of weight.
5. according to the method described in claim 3, wherein, it is based on the total of the iron-based material that the iron-based material of the pipe, which includes amount,
The carbon of the 0.1 weight % to 0.3 weight % of weight, and the iron-based material of the pipe does not include titanium or aluminium.
6. according to the method described in claim 1, wherein, along the weld seam that the joint portion is formed include aluminium nitride and/
Or titanium nitride.
7. according to the method described in claim 6, wherein, the weld seam formed along the joint portion includes amount for based on institute
It is the material based on the weld seam to state the aluminium nitride of the 0.3 weight % to 2.9 weight % of the total weight of the material of weld seam and amount
The titanium nitride of the 0.3 weight % to 2.9 weight % of total weight.
8. according to the method described in claim 1, wherein, the second component is formed by steel.
9. according to the method described in claim 1, including having to form the electric arc and the material of the welding wire is made to be transferred to
The gas metal arc welding of the step of joint portion connects processing.
10. according to the method described in claim 9, further including following step：
Before forming the electric arc in a closed chamber by component setting；
The welding wire is arranged in welding gun；
The welding gun is directed toward the joint portion between two components；And
Apply to the welding wire when the component is located in the closed room and feeds the welding wire via the welding gun
Voltage and current, to form the electric arc between the welding wire and the component.
11. according to the method described in claim 1, wherein, the step of making the material of the welding wire be transferred to the joint portion, wraps
Include at least one in following items：The material of the welding wire is set slightly to drip transfer；Make material short circuiting transfer, the injection of the welding wire
Transition；And make the material pulse spray transfer of the welding wire.
12. according to the method described in claim 1, wherein, the weld seam is without the hole that hole is 1.29mm or bigger.
13. according to the method described in claim 1, wherein, the first component forms the shell portion of flexible disk, and described second
Component forms the gear ring portion of the flexible disk.
14. a kind of welding structure, including：
The first component, the first component are formed by nitrated steel；
Second component, the second component are soldered to the first component, wherein weld seam includes aluminium nitride and/or titanium nitride.
15. welding structure according to claim 14, wherein the weld seam includes aluminium nitride and titanium nitride.
16. welding structure according to claim 15, wherein the weld seam includes that amount is 0.3 weight % to 2.9 weight %
Aluminium nitride and amount be 0.3 weight % to 2.9 weight % titanium nitride.
17. welding structure according to claim 14, wherein the second component is formed by steel.
18. welding structure according to claim 14, wherein the weld seam is without the hole that hole is 1.29mm or bigger.
19. welding structure according to claim 14, wherein the first component forms the shell portion of flexible disk, and institute
State the gear ring portion that second component forms the flexible disk.
20. welding structure according to claim 14, wherein the weld seam connects to be formed by gas metal arc welding.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/961,226 US10974349B2 (en) | 2010-12-17 | 2015-12-07 | Method for gas metal arc welding (GMAW) of nitrided steel components using cored welding wire |
| US14/961,226 | 2015-12-07 | ||
| PCT/CA2016/000303 WO2017096456A1 (en) | 2015-12-07 | 2016-12-07 | Method for gas metal arc welding (gmaw) of nitrided steel components using cored welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108367377A true CN108367377A (en) | 2018-08-03 |
Family
ID=59012487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680071309.7A Pending CN108367377A (en) | 2015-12-07 | 2016-12-07 | The method that gas metal arc welding meets (GMAW) is carried out to nitridation steel part using cored wire |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108367377A (en) |
| DE (1) | DE112016005584T5 (en) |
| WO (1) | WO2017096456A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168239A (en) * | 2018-11-13 | 2020-05-19 | 通用汽车环球科技运作有限责任公司 | Fusion welding of ferroalloy components using low carbon steel strip |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112016005584T5 (en) | 2018-09-13 |
| WO2017096456A1 (en) | 2017-06-15 |
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Application publication date: 20180803 |