Double-phase stainless steel welding method and welding system for adjusting two-phase proportion

A duplex stainless steel, welding method technology, applied in welding/welding/cutting items, welding equipment, laser welding equipment, etc. The effect of two-phase ratio imbalance and crack suppression

Pending Publication Date: 2022-01-11

CRRC QINGDAO SIFANG CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0003] The invention provides a duplex stainless steel welding method for adjusting the ratio of two phases, which is used to solve the imbalance of the duplex ratio of ferrite and austenite in the laser welding technology in the prior art, which reduces the For defects in the comprehensive performance of welded joints, the magnetic field that interacts with the molten pool metal fluid, plasma arc, and photoinduced plasm...

Method used

In detail, the present invention provides a kind of duplex stainless steel welding method that is used to adjust two-phase ratio, in order to solve laser welding technique in the prior art when welding duplex stainless steel, ferrite and austenite structure The unbalanced ratio of the two phases reduces the defect of the comprehensive performance of the welded joint. The magnetic field that interacts with the metal fluid in the molten pool, the plasma arc, and the photoinduced plasma in a non-contact manner can realize the stirring of the molten pool, which can effectively improve the welding performance. The internal shape of the seam can be adjusted reasonably, and the segregation of alloy elements in the weld can be reduced, cracks can be suppressed, the microstructure and production efficiency of the weld can be improved, and the problem of dual-phase ratio imbalance after welding of duplex stainless steel can be effectively overcome.

It should be noted that the dual-phase ratio is one of the most important features in the microstructural structure of duplex stainless steel, affected by the welding process, it is easy to cause the imbalance of the two-phase ratio in the weld structure after welding, and deteriorate the welded joint performance, by applying an alternating magnetic field to the duplex stainless steel workpiece to be welded, this embodiment can effectively overcome the technical problem of the imbalance of the two-phase ratio after welding the duplex stainless steel, can effectively control the two-phase ratio distribution of the weld structure, and improve the weld Performance, improve the strength, toughness and corrosion resistance of the joint, and expand the application field of laser welding.

Specifically, present embodiment provides a kind of embodiment of duplex stainless steel workpiece to be welded, by adopting alternating magnetic field to regulate and control duplex stainless steel weld seam structure in welding process, can significantly improve austenite and The microstructure and distribution characteristics of ferrite can quantitatively control the ratio of the two phases and improve the weld performance.

Specifically, the present embodiment provides a kind of embodiment of laser device and magnetic field e...

Abstract

The invention provides a double-phase stainless steel welding method and welding system for adjusting a two-phase proportion. The method comprises the following steps: pretreating the surface of a double-phase stainless steel workpiece to be welded; applying an alternating magnetic field to the double-phase stainless steel workpiece to be welded through magnetic field equipment; and conducting laser welding on the double-phase stainless steel workpiece to be welded through a laser device, and achieving double-phase proportion adjustment of the double-phase stainless steel workpiece to be welded under the action of the alternating magnetic field. According to the method, a magnetic field interacting with molten pool metal fluid, plasma arc and light-induced plasma is generated in a non-contact mode, stirring of a molten pool is achieved, the internal form of a welding seam can be effectively improved, tissue distribution can be reasonably adjusted, segregation of alloy elements in the welding seam is reduced, cracks are restrained, and meanwhile, the weld joint structure performance and the production efficiency are improved, and the problem of double-phase proportion imbalance after double-phase stainless steel welding is effectively solved.

Application Domain

Welding/soldering/cutting articlesLaser beam welding apparatus

Technology Topic

Alloy elementLaser soldering +9

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Examples

Experimental program(1)

Example Embodiment

[0047] In order to make the objects, technical solutions, and advantages of the present invention more clearly, the technical solutions in the embodiments of the present invention will be described in contemplation in the embodiment of the present invention. It is a part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained without making creative labor without making creative labor.

[0048] In the description of the embodiments of the present invention, it is to be described in that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "post", "left", "right" , "Vertical", "horizontal", "top", "bottom", "inside", "outside", etc., based on the orientation or positional relationship shown in the drawings, is only for ease of description SUMMARY OF THE INVENTION A simplified description, rather than indicating or implying that the device or element must have a specific orientation, constructed and operated in a particular orientation, and thus is not to be construed as limiting the embodiments of the present invention. Moreover, the term "first", "second", "third" is only used to describe the purpose, and cannot be understood as an indication or implies relative importance.

[0049] figure 1 It is a flow diagram of a bisphase stainless steel welding method for adjusting two-phase ratio provided by the present invention. figure 1 An embodiment of a double phase stainless steel welding method for adjusting two-phase ratio is shown.

[0050] figure 2 It is one of the mechanical properties of the mechanical properties of the examples and the contrast of the present invention in the biphasic stainless steel welding method for adjusting the two-phase ratio. like figure 2 In the illustrated embodiment, the double phase stainless steel welding method for adjusting the two-phase ratio includes:

[0051] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0052] Step 2, load an adjustable alternating magnetic field device is loaded over the workpiece, and the device is fixed to the welding mechanism, during the welding process, the magnetic field assisting equipment is kept linkage with the laser, and the alternating magnetic field strength is 20mT, and the magnetic field frequency is 10 Hz. ;

[0053] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0054] Step four 10mm, laser welding for double phase stainless steel.

[0055] In the contrast, the welding method includes the steps of:

[0056] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0057] Step 2, do not load the adjustable alternating magnetic field equipment above the welding workpiece, so that no magnetic field assistance is maintained during the welding;

[0058] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0059] Step 4. The laser power is 4500W, the wire feed speed is 2.3 m / min, the amount of defocus + 10 mm, the welding speed is 0.48 m / min, and the wire welding process parameters of the wire spacing of 1 mm are laser welding.

[0060] What needs to be explained, through figure 2 It can be seen that the double phase ratio of microstructure in the example and comparative example has been found that the proportion of the austenite and ferrite is in the action of an alternating magnetic field assist in the magnetic field intensity of 20 mT and the magnetic field frequency is 10 Hz. It was 42.21%: 57.79%, and the austenite and ferrite proportion of the comparative example were 34.77%: 65.23%, indicating that the alternating magnetic field in the examples effectively improve the imbalance of ferritic and Austenite tissue. The problem, the austenite content is significantly increased.

[0061] image 3 It is a two-dimensional mechanical properties of the present invention and the contrast of the mechanical properties of the present invention. like image 3 In the illustrated embodiment, the double phase stainless steel welding method for adjusting the two-phase ratio includes:

[0062] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0063] Step 2, the adjustable alternating magnetic field device is loaded over the water welded workpiece, and the device is fixed to the welding mechanism, and during the welding process, the magnetic field assist device is kept in connection with the laser, and the intensity of the alternating magnetic field is 80mT, and the magnetic field frequency is 20 Hz. ;

[0064] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0065] Step four 20mm, laser welding for double phase stainless steel.

[0066] In the contrast, the welding method includes the steps of:

[0067] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0068] Step 2, do not load the adjustable alternating magnetic field equipment above the welding workpiece, so that no magnetic field assistance is maintained during the welding;

[0069] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0070] Step 4. The laser power is 4500W, the wire feed speed is 2.3 m / min, the amount of defocus + 10 mm, the welding speed is 0.48 m / min, and the wire welding process parameters of the wire spacing of 1 mm are laser welding.

[0071] What needs to be explained, through image 3 It can be seen that the two-phase proportional analysis of the microstructure and the comparative example is found that the proportion of the austenite and ferrite is based on an alternating magnetic field assist in the magnetic field intensity of 80 MT and the magnetic field frequency is 20 Hz. It was 47.25%: 52.75%, and the proportion of the austenite and ferrite proportion of the contrast was 31.12%: 68.88%, indicating that the alternating magnetic field in Example 2 effectively regulates the double phase ratio of the double-phase stainless steel welded joint, and the effect effect Best.

[0072] Figure 4 It is a three-phase stainless steel welding method provided by the present invention for adjusting two-phase ratios, and the mechanical properties of the examples and the contrast. like Figure 4 In the illustrated embodiment, the double phase stainless steel welding method for adjusting the two-phase ratio includes:

[0073] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0074] Step 2, the adjustable alternating magnetic field device is loaded over the water welding workpiece, and the device is fixed to the welding mechanism, during the welding process, the magnetic field assisting equipment is kept in connection with the laser, and the intensity of the alternating magnetic field is 120mT, the magnetic field frequency is 30 Hz. ;

[0075] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0076] Step four 25mm, laser welding for double phase stainless steel.

[0077] In the contrast, the welding method includes the steps of:

[0078] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0079] Step 2, do not load the adjustable alternating magnetic field equipment above the welding workpiece, so that no magnetic field assistance is maintained during the welding;

[0080] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0081] Step 4

[0082] What needs to be explained, through Figure 4 It can be seen that the double phase ratio of microstructure in the example and comparative example has been found that the proportion of the austenite and ferrite is based on an alternating magnetic field assist in the magnetic field intensity of 120 MT and a magnetic field frequency of 30 Hz. It was 49.13%: 50.87%, the proportion of the austenite and ferrite proportion of the comparative example was 34.25%: 65.75%, indicating that the alternating magnetic field regulation dual-phase proportional effect in the examples was very significant, and the laser welding under this parameter, 120MT magnetic field strength and alternating magnetic field assistive effect of 30 Hz magnetic field frequency.

[0083] Figure 5 It is a four-phase stainless steel welding method provided in the present invention for adjusting the two-phase ratio, and is shown in the second example of the mechanical properties of the examples and the contrast. like Figure 5 In the illustrated embodiment, the double phase stainless steel welding method for adjusting the two-phase ratio includes:

[0084] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0085] Step two, the member to be welded over an alternating magnetic field of adjustable loading device and the fixing device and the welding means, so that the welding process, the laser field in conjunction with auxiliary holding device, the control magnetic field strength of 150 mT, frequency of 40Hz magnetic field;

[0086] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0087] Step four, laser power 4500W, wire feed speed 2.3m / min, the defocus amount + 10mm, welding speed 0.48m / min, a laser welding process parameters of the optical fiber is 1mm pitch, the alternating magnetic field from the surface to be welded to the height h 30mm, laser welding of duplex stainless steel.

[0088] In the contrast, the welding method includes the steps of:

[0089] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0090] Step 2, do not load the adjustable alternating magnetic field equipment above the welding workpiece, so that no magnetic field assistance is maintained during the welding;

[0091] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0092] Step 4. The laser power is 4500W, the wire feed speed is 2.3 m / min, the amount of defocus + 10 mm, the welding speed is 0.48 m / min, and the wire welding process parameters of the wire spacing of 1 mm are laser welding.

[0093] What needs to be explained, through Figure 5 Found that the ratio of the bipolar embodiments and comparative analysis of the microstructure found in comparison, in the embodiment magnetic field strength of 150 mT, the magnetic field frequency is 40Hz alternating magnetic field action of the auxiliary, the content ratio of austenite and ferrite It was 47.29%: 52.71%, the proportion of austenite to ferrite ratio was 30.94%: 69.06%, illustrate embodiments of the alternating magnetic field in the embodiment effectively regulate duplex duplex stainless steel welded joint ratio, and effects than good.

[0094] Image 6 It is a five-phase state of the mechanical properties of the examples and the contraction of the above-in-law. like Image 6 In the illustrated embodiment, the double phase stainless steel welding method for adjusting the two-phase ratio includes:

[0095] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0096] Step two, above the loading member to be welded adjustable alternating field device and the fixing device and the welding means, so that the welding process, the laser device remains magnetic auxiliary linkage controlling the magnetic field strength is controlled to 200 mT, the magnetic field frequency is 50Hz;

[0097] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0098] Step four, laser power 4500W, wire feed speed 2.3m / min, the defocus amount + 10mm, welding speed 0.48m / min, a laser welding process parameters of the optical fiber is 1mm pitch, the alternating magnetic field from the surface to be welded to the height h 40mm, laser welding of duplex stainless steel.

[0099] In the contrast, the welding method includes the steps of:

[0100] Step 1, build laser welding test platforms, laser welding systems include fiber lasers and cooling equipment, six-axis robotic arm, wire welding machine, welding tooling fixture, etc .;

[0101] Step two, the member to be welded is not loaded above the adjustable magnetic field means, so that during the welding process, holding no auxiliary magnetic field;

[0102] Step three, pre-treatment of the surface of the welder, eliminate the influencing factors such as rust, oil, and avoid negative impact on the quality of the welding joints;

[0103] Step 4. The laser power is 4500W, the wire feed speed is 2.3 m / min, the amount of defocus + 10 mm, the welding speed is 0.48 m / min, and the wire welding process parameters of the wire spacing of 1 mm are laser welding.

[0104] What needs to be explained, through Image 6 Clear, biphasic ratio of Comparative Example and comparative analysis for microstructure found in the embodiment of the alternating magnetic field assisted 200mT effect, the content ratio of austenite and ferrite was 43.18%: 56.82%, of austenite and ferrite fraction ratio was 31.87%: 68.13%, the alternating magnetic field described embodiments improve the proportion of ferrite and austenite imbalance in the austenite were significantly Increase.

[0105] Based on the above display Figures 2 to 6 The present invention provides a five and five comparative embodiment, in practice, the test can be repeated, so as to form the model parameters of the sample, to facilitate the acquisition parameters by the outer magnetic field and the immediate scope of the instant preset parameters instant magnetic field frequency.

[0106] In the description of the embodiments of the present invention, it is to be noted that the terms "connected", "connection" should be made in general understanding unless otherwise expressly specified and defined, for example, may be a fixed connection, or a detachable connection. Or integrate; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly via an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention can be understood from the specifically described.

[0107] In an embodiment of the present invention, unless otherwise expressly specified or limited, the first feature in the "on" a second or "lower" may be in direct contact with the first and second features, or by the first and second intermediate feature medium indirect contact. Moreover, the first feature "above", "above", and "upper", but the first feature is above or obliquely above the second feature, or only means that the first feature level height is higher than the second feature. The first feature is in the second feature "under" "lower" and "below" may be that the first feature is below the second feature or obliquely below, or only the first feature level height is less than the second feature.

[0108] In some embodiments of the invention, as Figure 1 to 6 , The present embodiment provides a two-phase ratio adjustment process for welding duplex stainless steel, comprising: a pair of duplex stainless steel to be welded surface pretreatment;

[0109] Member to be welded by a magnetic field means for applying an alternating magnetic field duplex stainless steel;

[0110] By a laser welder to be laser welded duplex stainless steel, duplex stainless steel member to be welded in the alternating magnetic field effect, to achieve the adjustment of the ratio of two phases.

[0111] In detail, the present invention provides a duplex stainless steel welding method for adjusting the phase ratio of the time to solve the prior art laser welding in welding duplex stainless steel, ferrite and austenite dual phase ratio imbalance, reducing the defects in the welded joint overall performance, by generating a magnetic field interacting with the metal bath in the form of a non-contact fluid, plasma arc and laser induced plasma, to achieve stirring of the bath, can effectively improve the internal weld form, rationally adjust tissue distribution, and to reduce the segregation of alloying elements in the weld, suppressing cracks, weld structure while improving performance and productivity, effectively overcome the duplex stainless steel of dual phase imbalance.

[0112] Incidentally, the ratio is one of the duplex stainless steel duplex microstructure of the most important features of the affected welding process, the weld metal after welding is likely to cause imbalance between the two phases, deterioration of performance of welded joints, the present Example embodiments of the duplex stainless steel by welders to be an alternating magnetic field is applied, can effectively overcome the duplex stainless steel welding duplex imbalance technical problems, can effectively control the phase ratio of the distribution of weld metal, weld to improve performance, increase joint toughness and corrosion resistance, expanding the application fields of laser welding.

[0113] In some possible embodiments of the present invention, the duplex stainless steel surface to be welded preprocessing step comprises: using a nonwoven fabric to wipe dipped in ethanol slope members in addition to duplex stainless steel to be welded to the front and back 10 to 20mm rim of rust and oil; wherein the front face refers to duplex stainless steel welding member to be welded.

[0114] Specifically, the present embodiment provides a duplex stainless steel member to be welded pretreatment embodiments, the surface treatment by duplex stainless steel member to be welded, to eliminate factors rust, oil, etc., to avoid the welding joint a negative impact on quality.

[0115] In some possible embodiments of the present invention, duplex stainless steel is a duplex stainless steel member to be welded ferrite and austenite thereof.

[0116] Specifically, the present embodiment provides a way of embodiment of duplex stainless steel member to be welded, the duplex stainless steel weld metal by use of an alternating magnetic field to regulate the welding process, can be significantly improved austenitic ferritic tissue distribution, regulation of the quantitative ratio of the two phases, to improve the weld properties.

[0117] In some possible embodiments of the present invention, duplex stainless steel by a laser welder to be laser welded, in the alternating magnetic field effect, to achieve the phase ratio adjustment step of duplex stainless steel member to be welded, in particular comprising :

[0118] Get duplex stainless steel and the magnetic field means and the instantaneous parameters to be preset parameters between welders, and judged according to the instantaneous parameters and preset parameters;

[0119] Now if the parameter is within the preset range of parameters, according to a preset magnetic field strength and the magnetic field of a predetermined frequency to be welded duplex stainless steel member applying an alternating magnetic field;

[0120] If the real time parameters are outside the range of preset parameters, then the instantaneous parameters adjusted according to the magnetic field means and the instant immediate field strength magnetic field frequency, member to be welded and applying an alternating magnetic field to the magnetic field strength of the duplex stainless steel according to the instant the adjusted frequency magnetic field and current .

[0121] Specifically, the present embodiment provides an alternating magnetic field by adjusting the ratio of the two phases to be duplex stainless steel member of the welders embodiment, the magnetic field by the device and parameters of duplex stainless steel to be immediate and preset parameters between welders Get can be welded duplex stainless steel member according to different shapes, sizes and configurations are adjusted alternating magnetic field strength and field frequency to satisfy the phase ratio adjusting member of the welders to be duplex stainless steel.

[0122]In addition, the present embodiment applies an alternating magnetic field assisted joint effect during a laser welding of a bipolar stainless steel to weld. The water surface of the weld pool under the action of the transform magnetic field fluctuates small fluctuations, and the weld is beautiful. The droplets are transitions are "spreading transition", and the proportion of ferritic and austenite organizations can be quantified according to the alternating magnetic field parameters. The loading alternating magnetic field has a certain stirring effect on the molten pool to make the molten pool flow more stable, and the tissue distribution is more uniform. The welded joint under alternating magnetic field assistance, due to the high coherency of the austenite and ferrite, the welding joint has excellent strength and plastic, weld metal after welding Good corrosion resistance. The present invention overcomes a conventional welding process to weld the austenite content of the welded joint in the welding process of the bisphase stainless steel, and improve the integrated mechanical properties of the welded joint after bipolar stainless steel welding.

[0123] In some possible embodiments of the present invention, the preset parameters include: preset height and preset thickness; preset height is the distance between the magnetic field equipment and the biphasic stainless steel, the preset thickness is the laser to double phase stainless steel The thickness of the laser welding is applied to be welded to form a thickness at the molten tank.

[0124] Specifically, the present embodiment provides an embodiment of a preset parameter, by acquiring the thickness of the magnetic field device and the bisphase stainless steel to weld the fabric, and the thickness of the bipolar stainless steel to be welded by the welder. The magnetic field strength and magnetic field frequency of the alternating magnetic field are adjusted according to the modulation of the magnetic field strength and the magnetic field frequency of the alternating magnetic field according to different shapes, sizes and structures, to satisfy the adjustment of two phase ratios of the bipolar stainless steel to be soldered.

[0125] In some possible embodiments of the present invention, the magnetic field strength adjustment range of the magnetic field device is between 20 and 200 mt; the magnetic field frequency adjustment range of the magnetic field device is between 10 and 50 Hz.

[0126] Specifically, the present embodiment provides an embodiment of a magnetic field strength and a magnetic field frequency, by providing the magnetic field strength and the magnetic field frequency adjustment range, double phase stainless steel to be welded according to different shapes, sizes, and structures Magnetic field strength and magnetic field frequency adjustment of the magnetic field.

[0127] In a possible embodiment, the magnetic field strength adjustment range of the magnetic field device is between 80 and 150 mT, and the magnetic field frequency adjustment range of the magnetic field device is between 20 and 40 Hz.

[0128] In some possible embodiments of the present invention, the laser and the magnetic field device are disposed in the welding direction, and the alternating magnetic field applied by the magnetic field apparatus is wrapped in the welding direction of the laser in the surface of the bisphase stainless steel to be welded to the surface of the worker.

[0129] Specifically, the present embodiment provides an embodiment of a laser and a magnetic field device arrangement relationship. By setting the alternating magnetic field to the wrapped laser to be formed on the surface of the bisphase stainless steel to be welded to the surface of the worker, the alternating magnetic field can be pair Phase stainless steel to prepare a comprehensive agitation effect on the surface of the surface of the welder, effectively improve the internal morphology of the weld and rationally adjust the tissue distribution.

[0130] In some possible embodiments of the invention, the alternating magnetic field applied by the magnetic field device is a longitudinal magnetic field extending in the welding direction.

[0131] Specifically, the present embodiment provides an embodiment of an alternating magnetic field that is more conforming to the welding process by applying a longitudinal alternating magnetic field, and the alternating magnetic field is coupled to the laser beam, the molten pool, the internal heat flow direction.

[0132] In some possible embodiments of the present invention, if the instant parameter is in the range of the preset parameter, the immediate magnetic field intensity and the instant magnetic field intensity of the magnetic field device are adjusted according to the instant parameter, the specifically includes:

[0133] Get the first parameter feature of the instant parameter, input the first parameter feature, the parameter sample model, and obtain the second parameter characteristic of the first parameter feature by the parameter sample model;

[0134] Take the sample magnetic field strength and sample magnetic field frequency corresponding to the second parameter feature value in the parameter sample model, and the sample magnetic field strength is used as the immediate magnetic field intensity, and the sample magnetic field frequency is used as the instant magnetic field frequency.

[0135] Specifically, the present embodiment provides an embodiment of an instant magnetic field strength and an instant magnetic field intensity and an instant magnetic field frequency of the magnetic field device, facilitating instant parameters except the preset parameters in the range of the preset parameter according to an instant parameter. Magnetic field strength and instant magnetic field frequency.

[0136] It should be noted that the parameter sample model is to train the big data of the parameter sample.

[0137] In some embodiments of the invention, the present solution provides a welding system having the above-described two-phase stainless steel welding method for adjusting the ratio of two phase ratios.

[0138] In the description of this specification, the description of the reference terms "one embodiment", "some embodiments", "manner", "specific embodiment", or "some ways", etc., meant to combine the specific characteristics described in connection. , Structures, materials, or features are included in at least one embodiment or method of the embodiment of the present invention. In the present specification, schematic representation of the above terms is not necessarily directed to the same embodiment or method. Moreover, the specific features, structures, materials or features described may be combined in any one or more embodiments or methods. In addition, those skilled in the art can combine and combine features and different embodiments, and different embodiments, and features of the present specification, in the case of non-compament.

[0139] It will be noted in that the above embodiment is intended to illustrate the invention, and is not intended to limit the invention. Although the present invention will be described in detail with reference to the examples, those skilled in the art will appreciate that various combinations, modifications, or equivalents of the technical solutions of the present invention are not separated from the spirit and scope of the technical solutions of the present invention. In the scope of the claims of the invention.

PUM

Property	Measurement	Unit
Magnetic field strength	20.0 ~ 200.0	mT

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Double-phase stainless steel welding method and welding system for adjusting two-phase proportion

A duplex stainless steel, welding method technology, applied in welding/welding/cutting items, welding equipment, laser welding equipment, etc. The effect of two-phase ratio imbalance and crack suppression

AI-Extracted Technical Summary

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