CN101412155A - Method for producing GH4169 high-temperature alloy multiply laminate structure - Google Patents
Method for producing GH4169 high-temperature alloy multiply laminate structure Download PDFInfo
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- CN101412155A CN101412155A CN 200810209590 CN200810209590A CN101412155A CN 101412155 A CN101412155 A CN 101412155A CN 200810209590 CN200810209590 CN 200810209590 CN 200810209590 A CN200810209590 A CN 200810209590A CN 101412155 A CN101412155 A CN 101412155A
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Abstract
The invention provides a method for manufacturing the GH4169 high-temperature alloy sandwich panel structure, which belongs to the field of material processing. The aim of the invention is to solve the problems in manufacturing the GH4169 high-temperature alloy with a multi-layer structure by SPF/DB. The method comprises the following steps: 1. the ultrasonic cleaning is performed; 2. by adopting the laser deep penetration welding, various workpieces are welded together; 3. by adopting the argon-arc welding, a sealed space is formed, and only a vent hole is reserved; 4. the welded workpieces are placed in a die; 5. the die is placed in a heating furnace, heated at a temperature of between 950 and 980 DEG C and subjected to heat preservation for 25 and 40 minutes; 6. the inert gas is filled in for the superplastic bulging treatment; and 7. the die is cooled down to the room temperature. In the invention, by adopting the laser connection/ superplastic bulging combined technique, the GH4169 high-temperature alloy sandwich panel structure is successfully manufactured; and by utilizing the quickness and the accuracy in the laser connection, the manufacturing time of the sandwich panel is shortened.
Description
Technical field
The present invention relates to a kind of method of the GH4169 of manufacturing high temperature alloy multi-layer sheet structure, particularly relate to expansive forming and connect the method for making multi-layer sheet structure GH4169 high temperature alloy, belong to material processing field in conjunction with the laser deep penetration welding.
Background technology
The GH4169 high temperature alloy is a kind of age-hardening Ni-Cr-Fe base wrought superalloy, this alloy has very high obdurability, anti-fatigue performance and good comprehensive mechanical properties under 650 ℃, this alloy multi-layer sheet structure has the characteristics of high strength, high rigidity, lightweight structure, have broad application prospects in the heat-resisting and solar heat protection of Aero-Space, its basic structure has three layers and four layers two kinds.Usually the multi-layer sheet structural member is to adopt SPF/DB (expansive forming/diffusion interconnection technique) to make, the GH4169 diffusion connects difficulty, usually its diffusion connection temperature is not less than 1040 ℃, connect hours is not less than 45min, and the GH4169 alloy grain is sharply grown up under this condition, its superplastic ability of serious reduction, and the low needs that are difficult to satisfy the sandwich construction shaping of the intensity that its diffusion connects, but the heat-resisting and heat insulation aspect of Aero-Space is very urgent to GH4169 high temperature alloy sandwich construction demand at present, and therefore how seeking new technology manufacturing multi-layer sheet structural member becomes present urgent problem.
Summary of the invention
The objective of the invention is to solve the problem that present SPF/DB method can't be made sandwich construction GH4169 high temperature alloy, a kind of method of the GH4169 of manufacturing high temperature alloy multi-layer sheet structure is provided.
The step that a kind of method of the GH4169 of manufacturing high temperature alloy multi-layer sheet structure realizes comprises:
Step 1: will all be that to put into purity respectively be the above acetone soln ultrasonic cleaning 1min～5min of 99.9% (quality) for panel, base plate and the N central layer of GH4169 high temperature alloy material, then with polish the respectively surperficial 8min～20min of panel, a base plate and N central layer of stainless steel steel brush and sand paper, panel, a base plate and N central layer being put into purity respectively is that the above acetone soln of 99.9% (quality) cleans 5min～15min again, N=1 or N=2K, K are positive integer;
Step 2: panel, a base plate and N central layer is fixed on the work stage, adopts the laser deep penetration welding panel, a base plate and N central layer to be welded together by the scheme of setting from panel side and base plate side respectively;
Step 3: adopt inferior arc-welding to be welded together to form second welding point around panel and the base plate, and leave a passage;
Step 4: the panel that will weld together, a base plate and N central layer is packed in the upper die and lower die, and upper die and lower die are provided with a plurality of steam vents;
Step 5: then, integral body is put into heating furnace and is heated between 950 ℃～980 ℃, and insulation 25min～40min;
Step 6: the pressing speed by 0.06MPa/min～0.07MPa/min feeds inert gas along passage, pressure in the chamber that forms when panel, base plate and N central layer expansive forming stops to feed inert gas when reaching between 4.0MPa～4.5MPa, and pressurize 25min～40min;
Step 7: be cooled to room temperature.
Advantage of the present invention is: the present invention adopt the success of laser connection/expansive forming combination technique manufacturing GH4169 high temperature alloy multi-layer sheet structural member, rapidity, the accuracy of utilizing laser to connect have not only shortened the multi-layer sheet preparation time, and for the alloy that can not use the SPF/DB method to make the multi-layer sheet structure has found a kind of new method, and very strong practicality is also arranged for the alloy the method that can spread connection.
Description of drawings
Fig. 1 is the three ply board structural representation of GH4169 high temperature alloy before the processing, Fig. 2 is the vertical view of Fig. 1, Fig. 3 is the upward view of Fig. 1, Fig. 4 is the A-A cutaway view of Fig. 1, Fig. 5 is the three ply board structural representation of processing back GH4169 high temperature alloy, Fig. 6 is the four-sheet structure schematic diagram of GH4169 high temperature alloy before the processing, and Fig. 7 is the four-sheet structure schematic diagram of processing back GH4169 high temperature alloy.
The specific embodiment
The specific embodiment one: referring to Fig. 1 to Fig. 7 present embodiment is described, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure, realize that the step of this method comprises:
Step 1: will all be that to put into purity respectively be the above acetone soln ultrasonic cleaning 1min～5min of 99.9% (quality) for the panel 1, base plate 3 of GH4169 high temperature alloy material and N central layer 2, then with polish the respectively surperficial 8min～20min of panel 1, base plate 3 and N central layer 2 of stainless steel steel brush and sand paper, again panel 1, base plate 3 and N central layer 2 being put into purity respectively is that the above acetone soln of 99.9% (quality) cleans 5min～15min, N=1 or N=2K, K are positive integer;
Step 2: panel 1, base plate 3 and N central layer 2 are fixed on the work stage, adopt the laser deep penetration welding panel 1, base plate 3 and N central layer 2 to be welded together by the scheme of setting from panel 1 side and base plate 3 sides respectively;
Step 3: adopt inferior arc-welding to be welded together to form second welding point 5 around panel 1 and the base plate 3, and leave a passage 6;
Step 4: the panel 1 that will weld together, base plate 3 and N central layer 2 are packed in patrix 7 and the counterdie 8, and patrix 7 and counterdie 8 are provided with a plurality of steam vents;
Step 5: then, integral body is put into heating furnace and is heated between 950 ℃～980 ℃, and insulation 25min～40min;
Step 6: the pressing speed of pressing 0.06MPa/min～0.07MPa/min feeds inert gas along passage 6, pressure in the chamber that forms when panel 1, base plate 3 and N central layer 2 expansive formings stops to feed inert gas when reaching between 4.0MPa～4.5MPa, and pressurize 25min～40min;
Step 7: be cooled to room temperature.
The purpose of ultrasonic cleaning panel 1, base plate 3 and N central layer 2 is in order to remove surperficial grease in the step 1, and the purpose of polishing respectively with stainless steel steel brush and sand paper is in order to remove surface film oxide.After carry out this step process, can prevent that the oxide-film and the impurity of panel 1, base plate 3 and N central layer 2 from causing harmful effect to welding point.
The scheme of setting described in the step 2 is meant according to the different different organization plans of number of plies design, the multiple-plate basic structure of alloy comprises three layers and four layers two kinds, making of three-decker by embodiment nine described organization plans, four-layer structure press embodiment 12 described organization plan manufacturings.
Passage described in the step 3 is an external stainless steel breather pipe when using, and convenient control feeds inert gas.
It is for after feeding inert gas that patrix described in the step 47 and counterdie 8 are provided with a plurality of steam vents, there is pressure differential inside and outside panel 1 and the base plate 3, make panel 1 and base plate 3 expansive formings successful, and be attached on the inwall of patrix 7, otherwise expansive forming can be not successful.
The specific embodiment two: the difference of present embodiment and embodiment one is, to all panels 1 of GH4169 high temperature alloy material in the step 1, it is the above acetone soln ultrasonic cleaning 2min～3min of 99.9% (quality) that central layer 2 and base plate 3 are put into purity respectively, then with stainless steel steel brush and the sand paper panel 1 of polishing respectively, surperficial 10min～the 15min of central layer 2 and base plate 3, again with panel 1, it is that the above acetone soln of 99.9% (quality) cleans 10min～15min that central layer 2 and base plate 3 are put into purity respectively, and other step is identical with embodiment one with technical parameter.
The specific embodiment three: the difference of present embodiment and embodiment one is that patrix 7 and counterdie 8 are provided with 1～3 steam vent in the step 4, and other step is identical with embodiment one with technical parameter.
The specific embodiment four: the difference of present embodiment and embodiment one is, integral body is put into heating furnace and is heated between 965 ℃～970 ℃ in the step 5, and insulation 28min～32min, and other step is identical with embodiment one with technical parameter.
The specific embodiment five: the difference of present embodiment and embodiment one is, integral body is put into heating furnace and is heated between 965 ℃～970 ℃ in the step 5, and insulation 30min, and other step is identical with embodiment one with technical parameter.
The specific embodiment six: the difference of present embodiment and embodiment one is, pressing speed described in the step 6 is 0.066MPa/min, pressure stops to feed inert gas when reaching 4.1MPa～4.3MPa, and other step is identical with embodiment one with technical parameter.
The specific embodiment seven: the difference of present embodiment and embodiment one is that pressing speed described in the step 6 is 0.066MPa/min, stops to feed inert gas when pressure reaches 4.2MPa, and other step is identical with embodiment one with technical parameter.
The specific embodiment eight: the difference of present embodiment and embodiment one is that inert gas described in the step 6 is nitrogen or argon gas, and other step is identical with embodiment one with technical parameter.
The specific embodiment nine: present embodiment is described referring to Fig. 1 to Fig. 5, the difference of present embodiment and embodiment one is, N=1, with panel 1, central layer 2 and base plate 3 are fixed on the work stage, panel 1 and base plate 3 equal and opposite in directions, central layer 2 is positioned at the centre of panel 1 and base plate 3, panel 1, central layer 2 and base plate 3 center-aligned are placed, adopt the laser deep penetration welding to weld together from panel 1 side and base plate 3 sides and central layer 2 respectively, form a plurality of parallel and equally spaced first welding points 4, staggered from first welding point 4 that panel 1 side forms with first welding point 4 that forms from base plate 3 sides, the intensity of first welding point 4 is between 550MPa～670MPa, the degree of depth of first welding point 4 surpasses the mid-depth line of central layer 2, keep the angle α between central layer 2 and the horizontal direction to spend between～45 degree 15 behind the expansive forming, other step is identical with embodiment one with technical parameter.
It during N=1 three-decker, adopt the laser deep penetration welding, when the size of panel 1, central layer 2 and base plate 3 not simultaneously, selected welding parameter is different, total principle be to guarantee first welding point 4 intensity between 550MPa～670MPa, the degree of depth of first welding point 4 surpasses the mid-depth line of central layer 2.
Give a specific embodiment, the selection of dimension 70mm of central layer 2 * 50mm * 1.1mm, the selection of dimension 130mm of panel 1 and base plate 3 * 130mm * 1.6mm, be spaced apart between 12.73mm～15.60mm between parallel first welding point 4 on the panel 1, the height of patrix 7 is 10mm, counterdie 8 is dull and stereotyped in the present embodiment, dress during mould and base plate 3 be close to, adopt the welding parameter of laser deep penetration welding: peak power is 4500W, and pulse power is 32Hz, and pulsewidth is 3ms, speed of welding is 180mm/min, defocusing amount is 0mm, and the degree of depth of first welding point 4 that welding forms is greater than 2.2mm, and compute depth is as requested
The specific embodiment ten: the difference of present embodiment and embodiment nine is that the intensity of first welding point 4 is between 580MPa～650MPa, and other step is identical with embodiment nine with technical parameter.
The specific embodiment 11: the difference of present embodiment and embodiment nine is, keeps the angle α between central layer 2 and the horizontal direction to spend between～35 degree 25 behind the expansive forming, and other step is identical with embodiment nine with technical parameter.
The specific embodiment 12: referring to Fig. 6, Fig. 7 illustrates present embodiment, the difference of present embodiment and embodiment one is, N=2K, with panel 1, base plate 3 an and N central layer 2 is fixed on the work stage, panel 1 and base plate 3 equal and opposite in directions, consistency from top to bottom is placed, N central layer 2 is divided into K core assembly plate group, two central layers, the 2 consistency from top to bottom settings of every core assembly plate group, K core assembly plate group is arranged side by side, equidistantly place between panel 1 and the base plate 3, adopt the laser deep penetration welding that one end of every core assembly plate group is welded together to form the 3rd welding point 9, weld together from the other end of panel 1 side and base plate 3 sides and every core assembly plate group respectively then, form a plurality of parallel and equally spaced first welding points 4, the intensity of first welding point 4 is between 550MPa～670MPa, the degree of depth of first welding point 4 surpasses the mid-depth line of central layer 2, the intensity of the 3rd welding point 9 is between 400MPa～500MPa, keep N central layer 2 vertical with base plate 3 with panel 1 behind the expansive forming, other step is identical with embodiment one with technical parameter.
N=2K is a four-layer structure, give a specific embodiment, the selection of dimension 50mm of central layer 2 * 16mm * 1.1mm, the selection of dimension 130mm of panel 1 and base plate 3 * 130mm * 1.6mm, be spaced apart between the 50-65mm between parallel first welding point 4 on the panel 1, the height of patrix 7 is 15mm, and counterdie 8 is the same with patrix 7 shapes in the present embodiment, and make-up is placed.
Adopt the welding parameter of two central layers 2 of laser deep penetration welding welding: peak power is 3200W, and pulse power is 32Hz, and pulsewidth is 3ms, and speed of welding is 180mm/min, and defocusing amount is 0mm.
Adopt the welding parameter of laser deep penetration welding welding central layer 2 and panel 1 or base plate 3: peak power is 4500W, and pulse power is 32Hz, and pulsewidth is 3ms, and speed of welding is 180mm/min, and defocusing amount is 0mm.
The degree of depth of first welding point 4 that welding forms is greater than 2.2mm, according to the compute depth that requires of step 3 is
The specific embodiment 13: the difference of present embodiment and embodiment 12 is, the intensity of first welding point 4 is between 580MPa～650MPa, the degree of depth of first welding point 4 surpasses the mid-depth line of central layer 2, the intensity of the 3rd welding point 9 is between 420MPa～480MPa, and other step is identical with embodiment 12 with technical parameter.
The specific embodiment 14: the difference of present embodiment and embodiment 12 is, the intensity of first welding point 4 is between 600MPa～610MPa, the degree of depth of first welding point 4 surpasses the mid-depth line of central layer 2, the intensity of the 3rd welding point 9 is between 430MPa～470MPa, and other step is identical with embodiment 12 with technical parameter.
Claims (10)
1, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure is characterized in that it comprises:
Step 1: will all be that to put into purity respectively be the above acetone soln ultrasonic cleaning 1min～5min of 99.9% (quality) for panel (1), base plate (3) and N the central layer (2) of GH4169 high temperature alloy material, then with polish the respectively surperficial 8min～20min of panel (1), base plate (3) and N central layer (2) of stainless steel steel brush and sand paper, panel (1), base plate (3) and N central layer (2) being put into purity respectively is that the above acetone soln of 99.9% (quality) cleans 5min～15min again, N=1 or N=2K, K are positive integer;
Step 2: panel (1), base plate (3) and N central layer (2) are fixed on the work stage, adopt the laser deep penetration welding panel (1), base plate (3) and N central layer (2) to be welded together by the scheme of setting from panel (1) side and base plate (3) side respectively;
Step 3: adopt inferior arc-welding to be welded together to form second welding point (5) around panel (1) and the base plate (3), and leave a passage (6);
Step 4: the panel that will weld together (1), base plate (3) and N central layer (2) are packed in patrix (7) and the counterdie (8), and patrix (7) and counterdie (8) are provided with a plurality of steam vents;
Step 5: then, integral body is put into heating furnace and is heated between 950 ℃～980 ℃, and insulation 25min～40min;
Step 6: the pressing speed of pressing 0.06MPa/min～0.07MPa/min feeds inert gas along passage (6), pressure in the chamber that forms when panel (1), base plate (3) and N central layer (2) expansive forming stops to feed inert gas when reaching between 4.0MPa～4.5MPa, and pressurize 25min～40min;
Step 7: be cooled to room temperature.
2, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1, it is characterized in that in the step 1 it will all being panels (1) of GH4169 high temperature alloy material, it is the above acetone soln ultrasonic cleaning 2min～3min of 99.9% (quality) that base plate (3) and N central layer (2) are put into purity respectively, then with stainless steel steel brush and the sand paper panel (1) of polishing respectively, surperficial 10min～the 15min of base plate (3) and N central layer (2) is again with panel (1), it is that the above acetone soln of 99.9% (quality) cleans 10min～15min that base plate (3) and N central layer (2) are put into purity respectively.
3, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1 is characterized in that integral body is put into heating furnace in the step 5 to be heated between 965 ℃～970 ℃, and insulation 28min～32min.
4, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1 is characterized in that pressing speed described in the step 6 is 0.066MPa/min, stops to feed inert gas when pressure reaches 4.2MPa.
5, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1 is characterized in that inert gas described in the step 6 is nitrogen or argon gas.
6, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1, it is characterized in that N=1, with panel (1), central layer (2) and base plate (3) are fixed on the work stage, panel (1) and base plate (3) equal and opposite in direction, central layer (2) is positioned at the centre of panel (1) and base plate (3), panel (1), central layer (2) and base plate (3) center-aligned are placed, adopt the laser deep penetration welding to weld together from panel (1) side and base plate (3) side and central layer (2) respectively, form a plurality of parallel and equally spaced first welding points (4), staggered from first welding point (4) that panel (1) side forms with first welding point (4) that forms from base plate (3) side, the intensity of first welding point (4) is between 550MPa～670MPa, the degree of depth of first welding point (4) surpasses the mid-depth line of central layer (2), keeps the angle (a) between central layer (2) and the horizontal direction to spend between～45 degree 15 behind the expansive forming.
7, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 6, the intensity that it is characterized in that first welding point (4) is between 580MPa～650MPa.
8, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 6 is characterized in that keeping the angle (a) between central layer (2) and the horizontal direction to spend between～35 degree 25 behind the expansive forming.
9, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 1, it is characterized in that N=2K, with panel (1), base plate (3) and N central layer (2) are fixed on the work stage, panel (1) and base plate (3) equal and opposite in direction, consistency from top to bottom is placed, N central layer (2) is divided into K core assembly plate group, two central layers (2) consistency from top to bottom setting of every core assembly plate group, K core assembly plate group is arranged side by side, equidistantly place between panel (1) and the base plate (3), adopt the laser deep penetration welding that one end of every core assembly plate group is welded together to form the 3rd welding point (9), weld together from the other end of panel (1) side and base plate (3) side and every core assembly plate group respectively then, form a plurality of parallel and equally spaced first welding points (4), the intensity of first welding point (4) is between 550MPa～670MPa, the degree of depth of first welding point (4) surpasses the mid-depth line of central layer (2), the intensity of the 3rd welding point (9) keeps N central layer (2) vertical with base plate (3) with panel (1) between 400MPa～500MPa behind the expansive forming.
10, a kind of method of making GH4169 high temperature alloy multi-layer sheet structure according to claim 9, the intensity that it is characterized in that first welding point (4) is between 580MPa～650MPa, the degree of depth of first welding point (4) surpasses the mid-depth line of central layer (2), and the intensity of the 3rd welding point (9) is between 420MPa～480MPa.
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| CN102248297A (en) * | 2011-06-24 | 2011-11-23 | 浙江工业大学 | Single-surface traceless welding method for stainless steel composite panel of elevator |
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