CN102528347A - Constraint radiating device for welding ferritic stainless steel plates and welding method - Google Patents
Constraint radiating device for welding ferritic stainless steel plates and welding method Download PDFInfo
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- CN102528347A CN102528347A CN201210009390XA CN201210009390A CN102528347A CN 102528347 A CN102528347 A CN 102528347A CN 201210009390X A CN201210009390X A CN 201210009390XA CN 201210009390 A CN201210009390 A CN 201210009390A CN 102528347 A CN102528347 A CN 102528347A
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Abstract
Disclosed are a constraint radiating device for welding ferritic stainless steel plates and a welding method. The device is characterized in that a groove is formed in the middle of a base plate along the length or width direction of the base plate, a gas inlet channel which is parallel to the groove is formed below the groove, a radiating structure is inlaid in the groove, and a fixing structure for fixing ferritic stainless steel plates to be welded is further disposed on the base plate. The radiating structure is provided with a gas groove in the middle of a copper body along the length direction of the copper body, a plurality of gas holes which are communicated with the gas inlet channel are arranged at the bottom of the groove, and two water flowing holes are respectively disposed on the copper body and positioned on two sides of the gas groove. The method includes that the two ferritic stainless steel plates are placed on the base plate in a butt joint manner, and a butt joint line of the ferritic stainless steel plates corresponds to the gas groove on the base plate and is fixed; industrial pure argon is filled into the gas inlet channel on the base plate; circulating cooling water is fed into the water flowing holes; the two ferritic stainless steel plates are welded; and a formed weld joint is obtained. The constraint radiating device and the welding method have the advantages that a welded part is prevented from deforming, heat transfer speed is fast, and the back of the weld joint is attractively formed.
Description
Technical field
The present invention relates to a kind of constraint formula heat abstractor of welding.Particularly relate to a kind of constraint formula heat abstractor and welding method that is used for the ferrite stainless steel welding.
Background technology
During the ferritic stainless steel welding, in the nearly seam district that is heated to more than 950 ℃, crystal grain is grown up easily, forms thick ferrite, and this grain growth sharply increases the toughness of welding point and plasticity.Because solid-state phase changes do not take place, the method that this phenomenon is difficult to adopt post weld heat treatment is with its refinement.When chromium content greater than 15.5% common ferritic stainless steel after temperature is 400～500 ℃ long-term heating, can occur that intensity raises and phenomenon that toughness descends, be called 475 ℃ of (885 ° of F) fragility.This shows that ferritic stainless steel is responsive to ratio of specific heat, and in the welding process because the concentrated effect of thermal source; There is thermograde on the weldment; Form uneven temperature field, must cause uneven tissue and performance variation, during welding heat source is kept in motion; When welding heat source near weldment on certain when a bit, heat heats up this point rapidly.Therefore make ferritic stainless steel heat radiation immediately in welding process, it is very important shortening high-temperature residence time.
Summary of the invention
Technical problem to be solved by this invention is; Provide a kind of through in welding process, the ferrite stainless steel sheet being imposed restriction; Avoid weldment distortion in the welding process; And accelerate heat radiation, avoid the long constraint formula heat abstractor and the welding method that are used for the ferrite stainless steel welding that makes that grain structure is thick and affect the mechanical properties of overheated time.
The technical scheme that the present invention adopted is: a kind of constraint formula heat abstractor and welding method that is used for the ferrite stainless steel welding; The constraint formula heat abstractor that is used for the ferrite stainless steel welding; Comprise substrate; The middle part of said substrate forms a groove along the length or the width of substrate; The below of described groove is parallel with this groove is formed with inlet channel, is inlaid with radiator structure in the described groove, also is provided with the fixed structure that is used for fixing the ferrite stainless steel material that is soldered on the described substrate.
Described radiator structure includes copper body; Be formed on the air drain at copper body middle part along the length direction of copper body; The bottom of said air drain has the pore that a plurality of and described inlet channel is connected, and the both sides that are positioned at air drain on the described copper body respectively have a limbers respectively.
Described fixed structure includes the pressing article that is used to push down the ferrite sheet material that is soldered, and is formed on the screw that is used for fixing pressing article on the substrate.
Be used for the welding method of the constraint formula heat abstractor of ferrite stainless steel welding, comprise the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate, adopt screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate;
2) inlet channel on substrate feeds industrial straight argon, and adjustments of gas flow, argon gas are expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate;
3) recirculated cooling water is sent into the limbers of radiator structure;
4) adopt pulsed tungsten argon arc weld(ing), and regulate welding parameter, two blocks of ferrite stainless steel materials are welded;
5) close the source of welding current, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
A kind of welding method that is used for the constraint formula heat abstractor of ferrite stainless steel welding comprises the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate, adopt screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate;
2) open laser instrument, make hot spot be radiated at the weldment center, the inlet channel on substrate feeds industrial straight argon simultaneously, and adjustments of gas flow, argon gas are expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate;
3) recirculated cooling water is sent into the limbers of radiator structure;
4) regulate welding parameter and weld, two blocks of ferrite stainless steel materials are welded;
5) close laser instrument, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
Constraint formula heat abstractor and the welding method that is used for ferrite stainless steel welding of the present invention avoided weldment distortion in the welding process, and accelerated heat radiation, avoids the overheated time longly to make that grain structure is thick and affect the mechanical properties.Utilize copper higher, adopt copper material, make rapid heat dissipation in the ferritic stainless steel welding process than the thermal conductivity factor of common iron; Feed inert gas and carry out the weld metal zone protection, feed cooling water simultaneously, the heat conduction of velocity is fast, makes the back of weld moulding attractive in appearance.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention;
Fig. 2 is a horizontal profile structure sketch map of the present invention;
Fig. 3 is the front side structure sketch map of Fig. 1;
Fig. 4 is Fig. 3 middle part vertical section structural representation.
Among the figure:
1: substrate 2: radiator structure
3: ferrite stainless steel material 4: screw
5: pressing article 6: inlet channel
7: groove 8: screw
21: copper body 22: air drain
23: limbers 24: pore
The specific embodiment
Below in conjunction with embodiment and accompanying drawing constraint formula heat abstractor and the welding method that is used for the ferrite stainless steel welding of the present invention made detailed description.
Like Fig. 1～shown in Figure 4; The constraint formula heat abstractor that is used for the ferrite stainless steel welding of the present invention; Utilize the thermal conductivity factor of copper to be higher than the thermal conductivity factor of general steel; Adopt copper as appearance of weld groove material, adopt the ordinary carbon steel material, improve ferritic stainless steel welding rate of heat dispation as baseplate material.Specifically include the substrate 1 of ordinary carbon steel material; The middle part of said substrate 1 forms a groove 7 along the length or the width of substrate 1; The inlet channel that is formed with an end opening 6 that the below of described groove 7 and this groove 7 are parallel; Be inlaid with copper radiator structure 2 in the described groove 7, also be provided with the fixed structure that is used for fixing the ferrite stainless steel material 3 that is soldered on the described substrate 1.
Described radiator structure 2 includes copper body 21; Be formed on the air drain 22 at copper body 21 middle parts along the length direction of copper body 21; The bottom of said air drain 22 has the pore 24 that a plurality of and described inlet channel 6 is connected, and cools off the weld seam center so that feed inert gas.The both sides that are positioned at air drain 22 on the described copper body 21 respectively have a limbers 23 respectively, feed cooling water, make radiating effect better.
Described fixed structure includes the pressing article 5 that is used to push down the ferrite sheet material 3 that is soldered, and is formed on the screw 8 that is used for fixing pressing article 5 on the substrate 1.
The welding method that is used for the constraint formula heat abstractor of ferrite stainless steel welding of the present invention comprises the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate; Adopting screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate, through adjusting fixedly weldment of screw and pressing plate height, is in welding process, to produce distortion;
2) inlet channel on substrate feeds industrial straight argon, the adjustments of gas flow, and argon gas is expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate, protects thereby reach the butt welded seam back side;
3) recirculated cooling water is sent into the limbers of radiator structure, changed the cooling water flow velocity and reach thermolysis;
4) adopt pulsed tungsten argon arc weld(ing), and regulate welding parameter, two blocks of ferrite stainless steel materials are welded;
5) close the source of welding current, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
The welding method that is used for the constraint formula heat abstractor of ferrite stainless steel welding of the present invention can also be to comprise the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate; Adopt screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate,, avoid producing in the welding process distortion through adjusting fixedly weldment of screw and pressing plate height;
2) open laser instrument; Make hot spot be radiated at the weldment center; Inlet channel on substrate feeds industrial straight argon simultaneously; The adjustments of gas flow, argon gas is expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate, protects thereby reach the butt welded seam back side;
3) recirculated cooling water is sent into the limbers of radiator structure, changed the cooling water flow velocity and reach thermolysis;
4) regulate welding parameter and weld, two blocks of ferrite stainless steel materials are welded;
5) close laser instrument, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
Claims (5)
1. one kind is used for the constraint formula heat abstractor that ferrite stainless steel welds; It is characterized in that; Comprise substrate (1), the middle part of said substrate (1) forms a groove (7) along the length or the width of substrate (1), and the below of described groove (7) is parallel with this groove (7) is formed with inlet channel (6); Be inlaid with radiator structure (2) in the described groove (7), also be provided with the fixed structure that is used for fixing the ferrite stainless steel material (3) that is soldered on the described substrate (1).
2. the constraint formula heat abstractor that is used for the ferrite stainless steel welding according to claim 1; It is characterized in that; Described radiator structure (2) includes copper body (21); The length direction of the copper body in edge (21) is formed on the air drain (22) at copper body (21) middle part, and the bottom of said air drain (22) has the pore (24) that a plurality of and described inlet channel (6) is connected, and the both sides that are positioned at air drain (22) on the described copper body (21) respectively have a limbers (23) respectively.
3. the constraint formula heat abstractor that is used for the ferrite stainless steel welding according to claim 1; It is characterized in that; Described fixed structure includes the pressing article (5) that is used to push down the ferrite sheet material (3) that is soldered, and is formed on the screw (8) that is used for fixing pressing article (5) on the substrate (1).
4. the described welding method that is used for the constraint formula heat abstractor of ferrite stainless steel welding of claim 1 is characterized in that, comprises the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate, adopt screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate;
2) inlet channel on substrate feeds industrial straight argon, and adjustments of gas flow, argon gas are expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate;
3) recirculated cooling water is sent into the limbers of radiator structure;
4) adopt pulsed tungsten argon arc weld(ing), and regulate welding parameter, two blocks of ferrite stainless steel materials are welded;
5) close the source of welding current, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
5. the described welding method that is used for the constraint formula heat abstractor of ferrite stainless steel welding of claim 1 is characterized in that, comprises the steps:
1) selects two of the thick ferrite stainless steel materials of 1～3.5mm for use; With placing on the substrate of these two ferrite stainless steel material butt joints; Make the butted line of these two blocks of ferrite stainless steel materials and the corresponding placement of air drain on the substrate, adopt screw and fixation clip bar that two blocks of ferrite stainless steel materials are fixed on the substrate;
2) open laser instrument, make hot spot be radiated at the weldment center, the inlet channel on substrate feeds industrial straight argon simultaneously, and adjustments of gas flow, argon gas are expelled on the butted line of two blocks of ferrite stainless steel materials through the pore that is embedded in the radiator structure on the substrate;
3) recirculated cooling water is sent into the limbers of radiator structure;
4) regulate welding parameter and weld, two blocks of ferrite stainless steel materials are welded;
5) close laser instrument, close industrial straight argon flow valve, close cooling water, obtain the weld seam of forming.
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| CN201210009390XA CN102528347A (en) | 2012-01-12 | 2012-01-12 | Constraint radiating device for welding ferritic stainless steel plates and welding method |
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Application publication date: 20120704 |