CN114012241B - Friction welding method for revolving body component with closed cavity or closed channel - Google Patents
Friction welding method for revolving body component with closed cavity or closed channel Download PDFInfo
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- CN114012241B CN114012241B CN202111300427.XA CN202111300427A CN114012241B CN 114012241 B CN114012241 B CN 114012241B CN 202111300427 A CN202111300427 A CN 202111300427A CN 114012241 B CN114012241 B CN 114012241B
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
Abstract
The invention provides a friction welding method for a revolving body component with a closed cavity or a closed channel, which sequentially comprises the steps of welding structure design, weldment processing and pretreatment, to-be-welded part clamping, parameter setting, inertia axial friction welding, component unloading and the like. The friction welding method has the advantages of high process automation degree, high production efficiency, low production cost, high welding strength and stable and reliable quality.
Description
The invention is a divisional application of patent application No. 202010314972.3 entitled "a method for synchronously and axially welding variable-diameter multi-welding-surface revolving body components".
Technical Field
The invention relates to the technical field of welding of revolving body metal components, in particular to a friction welding method for a revolving body component with a closed cavity or a closed channel.
Background
The metal component with the structure of the closed cavity, the closed channel and the like has a complex structural shape, is difficult to form by the traditional integral casting process, and has great preparation difficulty; the method is the most effective way for preparing the cylindrical/tubular solid of revolution metal component with the closed cavity or the closed channel. Because the welding joint of the metal component of the revolving body is generally in a double-ring type welding surface structure, and the parameters such as the outer diameter, the thickness, the welding area and the like of each ring welding surface are different, the welding joint belongs to a typical variable-diameter multi-welding-surface welding structure, and the high-efficiency high-quality connection difficulty is extremely high; the outer circumferential weld is easy to weld only by adopting fusion welding processes such as laser welding, electron beam welding, electric arc welding and the like, the inner circumferential weld is difficult to weld or has higher welding difficulty, the welding process and the subsequent heat treatment process are easy to generate large structure warping deformation, and the joint is easy to generate defects related to solidification, and the weld strength and the weld precision are difficult to guarantee. The brazing and vacuum diffusion technology can realize the synchronous welding of multiple welding surfaces with variable diameters, but large-area brazing joints are easy to generate a large number of cavities and the like, and the brazing strength is low; the vacuum diffusion welding gap of the double-ring structure is difficult to accurately control, the welding quality stability control difficulty is high, the welding efficiency is low, the high-quality and high-efficiency connection requirements cannot be met, and the reliability of a welding component under a static load or dynamic load service condition is seriously influenced. The joint is a hot forging fine grain structure after inertia friction welding, the welding process is easy to realize automation, and the method is an effective method for realizing the synchronous welding of variable-diameter multi-welding-surface revolving body components, but because the structural sizes of the multi-welding-surface components, such as the diameters, are different, the friction linear speeds of all welding surfaces are different under the same welding friction rotating speed, the welding energy input in unit area is different, the difference, such as the cooling conditions of inner and outer ring welding seams is large, the structural performance consistency control difficulty of all welding surfaces is large, and the requirement of welding quality is difficult to meet.
Disclosure of Invention
The invention aims to provide a friction welding method for a revolving body component with a closed cavity or a closed channel, which has the advantages of high process automation degree, high production efficiency, low production cost, high welding strength and stable and reliable quality.
The purpose of the invention is realized by the following technical scheme:
a friction welding method for a revolving body component with a closed cavity or a closed channel is characterized in that the revolving body component with the closed cavity or the closed channel is a columnar/tubular metal component, and comprises the following steps:
a. a step type friction welding joint with an inner ring rubbing first and an outer ring rubbing later is adopted to complete the structural design of the blank of the inner and outer double ring step to-be-welded part; in the step a, the distance difference of the positions of the welding seams of the surfaces to be welded of the inner ring and the outer ring is A, wherein A is between 10mm and 50 mm; the outer diameter of the outer ring is preferably 60 mm-160 mm, and the thickness to be welded is preferably 3 mm-15 mm; the outer diameter of the inner ring is preferably 20 mm-130 mm, and the thickness to be welded is preferably 3 mm-15 mm; wherein the friction of the surface to be welded of the inner ring is preferably 0.2 mm-2 mm;
b. processing a stable welding clamping tool according to the structural size of a blank of a to-be-welded part;
c. machining a piece to be welded, performing rust removal, deburring and oil stain removal treatment on the surfaces to be welded of the inner ring and the outer ring, and simultaneously forming Y-shaped grooves on the surfaces to be welded of the inner ring and the outer ring; then clamping the piece to be welded by adopting a welding clamping tool; the truncated edge height of the Y-shaped groove is preferably 2 mm-10 mm, the groove angle is preferably 50-80 degrees, and the opening orientation of the Y-shaped groove is specifically as follows: the opening of the Y-shaped groove at the welding position of the inner ring faces the outer ring, and the opening of the Y-shaped groove at the welding position of the outer ring faces the inner ring;
d. respectively installing a welding clamping tool on a main shaft of an inertia friction welding machine and a movable sliding table, setting welding parameters of the inertia friction welding machine, starting the inertia friction welding machine, maintaining pressure, and completing inertia friction welding of a variable-diameter multi-welding-surface revolving body component, namely completing synchronous axial friction welding of an inner ring welding surface and an outer ring welding surface; wherein the rotational inertia of the rotating flywheel of the inertia friction welding machine is 2kg2～164kg•m2；
e. Opening a welding clamping tool arranged on a main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to a specified position, and taking down a welding part; the strength coefficient of each welding surface joint in the obtained welding part is more than or equal to 0.95, and the strength change is within 5 percent.
And c, further optimizing, wherein the welding clamping tool in the step b is a full-containment elastic chuck clamping tool.
Further optimizing, the parameters of the inertia friction welding machine in the step d are as follows: the friction rotating speed is 1200 r/min-1550 r/min, the friction pressure is 3 MPa-8 MPa, the upsetting rotating speed is 450 r/min-900 r/min, and the upsetting pressure is 5 MPa-15 MPa.
For the welding of the revolving body component, the diameter of the outer ring is large, the rotating speed is high, the friction heat is high, the rotating speed of the inner ring is low, the friction heat is low, and the friction energy of the welding surfaces of the inner ring and the outer ring is different, so that the welding energy input in unit area is different, the tissue property difference of the welding surfaces is large, the tissue of the welding surfaces is uneven, and the welding quality is low; the inner ring generates friction heat firstly and provides certain resistance for friction of the outer ring at the same time by adopting stepped friction welding of first friction of the inner ring and second friction of the outer ring, thereby ensuring that the friction energy and the heat of the inner ring and the outer ring are the same and realizing that the texture performance of each welding surface is uniform. In addition, through the design of a Y-shaped groove and the direction of an opening of the Y-shaped groove in the asynchronous stepped welding surface joint structure and the rotating centrifugal force of a flywheel during welding of the inertia friction welding machine, the welding flash on the inner side of the closed cavity of the revolving body component is reduced, and meanwhile, the welding flash is ensured to be generated and also to be generated on the outer side of the outer ring of the revolving body component, so that the welding flash is convenient to post-process, and the welding flash is prevented from blocking a cooling channel and influencing the welding quality.
A friction welding method for a revolving body component with a closed cavity or a closed channel is characterized in that the revolving body component with the closed cavity or the closed channel is provided with a 42CrMo steel welding seam with two welding surfaces of an inner ring and an outer ring, wherein the outer diameter of the outer ring is 160mm, the inner diameter of the outer ring is 130mm, and the thickness of the surface to be welded is 15 mm; the outer diameter of the inner ring is 100mm, the inner diameter of the inner ring is 70mm, and the thickness of the surface to be welded is 15 mm; the method comprises the following steps:
a. adopt the cascaded friction weld joint of friction, outer loop after friction of inner ring earlier, the asynchronous weldment blank structure size of waiting of the inside and outside dicyclo ladder of design is: the distance difference A between the positions of the inner ring welding seam and the outer ring welding seam is 50mm, and the friction quantity of the welding surface of the inner ring is 2 mm;
b. processing a full-containment elastic chuck clamping tool by adopting 40Cr medium carbon quenched and tempered steel according to the structural size of a blank of a to-be-welded part;
c. selecting quenched and tempered 42CrMo steel as a welding part, and machining the inner ring diameter, the outer ring diameter, the Y-shaped groove and other dimensions of a component to be welded: reserving 2mm +/-0.05 mm of friction amount of the welding surface of the inner ring; the truncated edge height of the Y-shaped groove is 10mm plus or minus 0.05mm, and the groove angle is 50 degrees; the opening direction of the Y-shaped groove is as follows: the opening of the Y-shaped groove at the welding position of the inner ring faces the outer ring, and the opening of the Y-shaped groove at the welding position of the outer ring faces the inner ring; carrying out rust removal and deburring treatment on the part to be welded by using sand paper, and removing oil stains on the part to be welded by using ethyl acetate;
d. respectively installing a welding clamping tool on a main shaft of the inertia friction welding machine and a movable sliding table, and clamping a to-be-welded part by adopting a full-containment elastic chuck clamping tool, wherein the pre-clamping force is 0.5 MPa;
e. the moment of inertia is 164 kg.m2The flywheel is arranged on a main shaft of the radial friction welding machine, and parameter setting is carried out on a control interface of the inertia friction welding machine, wherein the set friction rotating speed is 1200r/min, the friction pressure is 8MPa, the upsetting rotating speed is 450r/min, and the upsetting pressure is 15 MPa; starting an inertia friction welding machine, wherein a movable sliding table firstly advances quickly and then advances, a main shaft of the welding machine starts to rotate and increase in speed after a workpiece to be welded is contacted, when the main shaft increases to the main shaft rotating speed of 1200r/min, an inner ring welding surface of the workpiece to be welded generates frictional heat under the action of frictional pressure, then an outer ring welding surface is contacted and mutually rubbed, kinetic energy of a flywheel, the main shaft and a rotary clamping tool is converted into frictional heat to enable the inner ring welding surface and the outer ring welding surface to be in a thermoplastic state, and when the main shaft rotating speed decreases to the upsetting rotating speed of 450r/min along with the consumption of the kinetic energy of the flywheel, the main shaft and the rotary clamping tool, an upsetting brake is generated by a welding piece at the end of a movable clamp under the action of upsetting pressure, pressure maintaining is performed, and synchronous axial friction welding of the inner ring welding surface and the outer ring welding surface is completed;
f. unloading the component: and opening a welding clamping tool arranged on the main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to the specified position, and taking down the welding part.
The invention has the following beneficial effects:
the invention provides a friction welding method for a revolving body component with a closed cavity or a closed channel, which has the advantages of high process automation degree, high welding efficiency of more than 30 pieces/h, high production efficiency and low production cost; meanwhile, the strength coefficient of each welding surface joint in the welding part obtained by the invention is more than or equal to 0.95, the strength change is within 5 percent, and the welding quality is good. In the welding process, a Y-shaped groove and an asynchronous stepped welding surface joint structure are adopted, so that the size of welding flashes on the inner side of a closed cavity can be reduced, the welding flashes are prevented from blocking a cooling channel, the tissue performance of each welding surface can be uniformly controlled, and the stability and reliability of the welding quality are ensured; meanwhile, the design of the Y-shaped groove is adopted, so that the phenomenon that the welding quality is influenced due to the generation of cracks caused by overlarge internal stress of a joint of the welding surface when the inner ring and the outer ring are subjected to asynchronous step welding is prevented.
Drawings
FIG. 1 is a schematic structural view of an inertial axial friction welded joint of a revolving body component with a closed cavity or a closed channel according to the present invention.
FIG. 2 is a flow chart of a friction welding process as described in the present invention.
FIG. 3 is a schematic view of an inertial axial friction weld joint of a revolving body member with a closed cavity or a closed channel according to the present invention.
FIG. 4 is a microstructure of a joint after inertia friction welding of 42CrMo steel in an embodiment of the invention.
Wherein, 1, inner ring welding seam; 2. and (5) an outer ring weld.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Aiming at the synchronous axial friction welding of a 42CrMo steel welding seam (the outer diameter of the outer ring is phi 160mm, the inner diameter of the outer ring is phi 130mm, the thickness of the surface to be welded is 15 mm; the outer diameter of the inner ring is phi 100mm, the inner diameter of the inner ring is phi 70mm, and the thickness of the surface to be welded is 15 mm) with two welding surfaces of the inner ring and the outer ring:
a. adopt the cascaded friction weld joint of friction, outer loop after friction of inner ring earlier, the asynchronous weldment blank structure size of waiting of the inside and outside dicyclo ladder of design is: the distance difference A (shown in figure 1) between the positions of the inner ring welding seam and the outer ring welding seam is 50mm, and the friction quantity of the welding surface of the inner ring is 2 mm.
b. According to the structural size of a blank of a to-be-welded part, a full-containment elastic chuck clamping tool of a circular inner conical surface thrust sleeve structure is machined by adopting 40Cr medium carbon quenched and tempered steel.
c. Selecting quenched and tempered 42CrMo steel as a welding part, and machining the inner ring diameter, the outer ring diameter, the Y-shaped groove and other dimensions of a component to be welded: reserving 2mm +/-0.05 mm of friction amount of the welding surface of the inner ring; the truncated edge height of the Y-shaped groove is 10mm +/-0.05 mm, and the groove angle is 50 degrees. And carrying out rust removal and deburring treatment on the part to be welded by using sand paper, and removing oil stains on the part to be welded by using ethyl acetate.
d. Respectively installing a welding clamping tool on a main shaft of the CT-130-J inertia friction welding machine and a movable sliding table, and clamping a to-be-welded part by adopting a full-containment elastic chuck clamping tool, wherein the pre-clamping force is 0.5 MPa.
e. The moment of inertia is 164 kg.m2The flywheel is arranged on a main shaft of the radial friction welding machine, and parameters are set on a control interface of the inertia friction welding machine, wherein the set friction rotating speed is 1200r/min, the friction pressure is 8MPa, the upsetting rotating speed is 450r/min, and the upsetting pressure is 15 MPa. The inertia friction welding machine is started, the movable sliding table firstly moves fast and then moves in a working mode under the action of the axial main oil cylinder, after a to-be-welded part is contacted, a main shaft of the welding machine starts to rotate and rise, when the main shaft rises to the main shaft rotating speed of 1200r/min, an inner ring welding surface of the to-be-welded part generates friction heat under the action of friction pressure, then an outer ring welding surface is contacted and mutually rubbed, kinetic energy of a flywheel, the main shaft and the rotary clamping tool is converted into friction heat, so that the inner ring welding surface and the outer ring welding surface are in a thermoplastic state, along with consumption of the kinetic energy of the flywheel, the main shaft and the rotary clamping tool, when the main shaft rotating speed drops to the upsetting rotating speed of 450r/min, an upsetting brake is generated by a welding part at the end of the movable clamp under the upsetting pressure, pressure maintaining is achieved, and synchronous axial friction welding of the inner ring welding surface and the outer ring welding surface is completed.
f. Unloading the component: and opening a welding clamping tool arranged on the main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to the specified position, and taking down the welding part.
The strength test of the inner ring welding surface and the outer ring welding surface shows that the tensile strength of the friction welding joint of the inner ring welding surface is 1068MPa, the tensile strength of the friction welding joint of the outer ring welding surface is 1085MPa, and the strength coefficients are all over 0.96, so that the synchronous high-strength welding of the members in the example is realized.
Example 2
Aiming at the synchronous axial friction welding of a 42CrMo steel welding seam (the outer diameter of the outer ring is phi 60mm, the inner diameter of the outer ring is phi 54 mm, the thickness of the surface to be welded is 3 mm; the outer diameter of the inner ring is phi 20mm, the inner diameter of the inner ring is phi 14mm, and the thickness of the surface to be welded is 3 mm) with two welding surfaces of the inner ring and the outer ring:
a. adopt the cascaded friction weld joint of friction, outer loop after friction of inner ring earlier, the asynchronous weldment blank structure size of waiting of the inside and outside dicyclo ladder of design is: the distance difference A (shown in figure 1) between the positions of the inner ring welding seam and the outer ring welding seam is 10mm, and the friction quantity of the welding surface of the inner ring is 0.2 mm.
b. According to the structural size of a blank of a to-be-welded part, a full-containment elastic chuck clamping tool of a circular inner conical surface thrust sleeve structure is machined by adopting 40Cr medium carbon quenched and tempered steel.
c. Selecting quenched and tempered 42CrMo steel as a welding part, and machining the inner ring diameter, the outer ring diameter, the Y-shaped groove and other dimensions of a component to be welded: the friction amount of the welding surface of the inner ring is reserved to be 0.2mm +/-0.05 mm; the truncated edge height of the Y-shaped groove is 2mm plus or minus 0.05mm, and the groove angle is 80 degrees. And carrying out rust removal and deburring treatment on the part to be welded by using sand paper, and removing oil stains on the part to be welded by using ethyl acetate.
d. Respectively installing a welding tool on a main shaft of the FW-165HT inertia friction welding machine and a movable sliding table, and clamping a to-be-welded part by using a full-containment elastic chuck clamping tool, wherein the pre-clamping force is 0.3 MPa.
e. The moment of inertia is 2 kg.m2The flywheel is arranged on a main shaft of the radial friction welding machine, and parameters are set on a control interface of the radial friction welding machine, wherein the set friction rotating speed is 1550r/min, the friction pressure is 3MPa, the upsetting rotating speed is 900r/min, and the upsetting pressure is 5 MPa.The inertia friction welding machine is started, the movable sliding table firstly advances quickly and then advances, after the parts to be welded are contacted, the main shaft of the welding machine starts to rotate and increase in speed, when the main shaft increases to the rotating speed of the main shaft of 1550r/min, the inner ring welding surface of the part to be welded generates friction heat under the action of friction pressure, then the outer ring welding surface contacts and rubs mutually, kinetic energy of the flywheel, the main shaft and the rotary clamping tool is converted into friction heat, so that the inner ring welding surface and the outer ring welding surface are in a thermoplastic state, and when the rotating speed of the main shaft decreases to the upsetting rotating speed of 900r/min along with the consumption of the kinetic energy of the flywheel, the main shaft and the rotary clamping tool, the welding part at the end of the movable clamp generates upsetting brake under the action of upsetting pressure, pressure maintaining is carried out, and synchronous axial friction welding of the inner ring welding surface and the outer ring welding surface is completed.
f. Unloading the component: and opening a welding clamping tool arranged on the main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to the specified position, and taking down the welding part.
The strength test of the inner ring welding surface and the outer ring welding surface shows that the tensile strength of the friction welding joint of the inner ring welding surface is 1075MPa, the tensile strength of the friction welding joint of the outer ring welding surface is 1090MPa, and the strength coefficients are all more than 0.96, so that the synchronous high-strength welding of the members in the example is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A friction welding method for a revolving body component with a closed cavity or a closed channel is characterized in that the revolving body component with the closed cavity or the closed channel is a columnar/tubular metal component, and comprises the following steps:
a. a step type friction welding joint with an inner ring rubbing first and an outer ring rubbing later is adopted to complete the structural design of the blank of the inner and outer double ring step to-be-welded part; in the step a, the distance difference of the positions of the welding seams of the surfaces to be welded of the inner ring and the outer ring is A, wherein A is between 10mm and 50 mm; the outer diameter of the outer ring is preferably 60 mm-160 mm, and the thickness to be welded is preferably 3 mm-15 mm; the outer diameter of the inner ring is preferably 20 mm-130 mm, and the thickness to be welded is preferably 3 mm-15 mm; wherein the friction of the surface to be welded of the inner ring is preferably 0.2 mm-2 mm;
b. processing a stable welding clamping tool according to the structural size of a blank of a to-be-welded part;
c. machining a piece to be welded, performing rust removal, deburring and oil stain removal treatment on the surfaces to be welded of the inner ring and the outer ring, and simultaneously forming Y-shaped grooves on the surfaces to be welded of the inner ring and the outer ring; then clamping the piece to be welded by adopting a welding clamping tool; the truncated edge height of the Y-shaped groove is preferably 2 mm-10 mm, the groove angle is preferably 50-80 degrees, and the opening orientation of the Y-shaped groove is specifically as follows: the opening of the Y-shaped groove at the welding position of the inner ring faces the outer ring, and the opening of the Y-shaped groove at the welding position of the outer ring faces the inner ring;
d. respectively installing a welding clamping tool on a main shaft of an inertia friction welding machine and a movable sliding table, setting welding parameters of the inertia friction welding machine, starting the inertia friction welding machine, maintaining pressure, and completing inertia friction welding of a variable-diameter multi-welding-surface revolving body component, namely completing synchronous axial friction welding of an inner ring welding surface and an outer ring welding surface; wherein the rotational inertia of the rotating flywheel of the inertia friction welding machine is 2kg2～164kg•m2；
e. Opening a welding clamping tool arranged on a main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to a specified position, and taking down a welding part; the strength coefficient of each welding surface joint in the obtained welding part is more than or equal to 0.95, and the strength change is within 5 percent.
2. A friction welding process of rotors with closed cavities or closed channels according to claim 1, characterized in that: and c, the welding clamping tool in the step b is a full-containment elastic chuck clamping tool.
3. A friction welding process of rotors with closed cavities or channels according to claim 1 or 2, characterized in that: the parameters of the inertia friction welding machine in the step d are as follows: the friction rotating speed is 1200 r/min-1550 r/min, the friction pressure is 3 MPa-8 MPa, the upsetting rotating speed is 450 r/min-900 r/min, and the upsetting pressure is 5 MPa-15 MPa.
4. A friction welding method for a revolving body component with a closed cavity or a closed channel is characterized in that the revolving body component with the closed cavity or the closed channel is provided with a 42CrMo steel welding seam with two welding surfaces of an inner ring and an outer ring, wherein the outer diameter of the outer ring is 160mm, the inner diameter of the outer ring is 130mm, and the thickness of the surface to be welded is 15 mm; the outer diameter of the inner ring is 100mm, the inner diameter of the inner ring is 70mm, and the thickness of the surface to be welded is 15 mm; the method comprises the following steps:
a. adopt the cascaded friction weld joint of friction, outer loop after friction of inner ring earlier, the asynchronous weldment blank structure size of waiting of the inside and outside dicyclo ladder of design is: the distance difference A between the positions of the inner ring welding seam and the outer ring welding seam is 50mm, and the friction quantity of the welding surface of the inner ring is 2 mm;
b. processing a full-containment elastic chuck clamping tool by adopting 40Cr medium carbon quenched and tempered steel according to the structural size of a blank of a to-be-welded part;
c. selecting quenched and tempered 42CrMo steel as a welding part, and machining the inner ring diameter, the outer ring diameter, the Y-shaped groove and other dimensions of a component to be welded: reserving 2mm +/-0.05 mm of friction amount of the welding surface of the inner ring; the truncated edge height of the Y-shaped groove is 10mm plus or minus 0.05mm, and the groove angle is 50 degrees; the opening direction of the Y-shaped groove is as follows: the opening of the Y-shaped groove at the welding position of the inner ring faces the outer ring, and the opening of the Y-shaped groove at the welding position of the outer ring faces the inner ring; carrying out rust removal and deburring treatment on the part to be welded by using sand paper, and removing oil stains on the part to be welded by using ethyl acetate;
d. respectively installing a welding clamping tool on a main shaft of the inertia friction welding machine and a movable sliding table, and clamping a to-be-welded part by adopting a full-containment elastic chuck clamping tool, wherein the pre-clamping force is 0.5 MPa;
e. the moment of inertia is 164 kg.m2The flywheel is arranged on a main shaft of the radial friction welding machine, and parameters are set on a control interface of the inertia friction welding machine, wherein the set friction rotating speed is 1200r/min, the friction pressure is 8MPa, and the upset forging is rotatedThe speed is 450r/min, and the upsetting pressure is 15 MPa; starting an inertia friction welding machine, wherein a movable sliding table firstly advances quickly and then advances, a main shaft of the welding machine starts to rotate and increase in speed after a workpiece to be welded is contacted, when the main shaft increases to the main shaft rotating speed of 1200r/min, an inner ring welding surface of the workpiece to be welded generates frictional heat under the action of frictional pressure, then an outer ring welding surface is contacted and mutually rubbed, kinetic energy of a flywheel, the main shaft and a rotary clamping tool is converted into frictional heat to enable the inner ring welding surface and the outer ring welding surface to be in a thermoplastic state, and when the main shaft rotating speed decreases to the upsetting rotating speed of 450r/min along with the consumption of the kinetic energy of the flywheel, the main shaft and the rotary clamping tool, an upsetting brake is generated by a welding piece at the end of a movable clamp under the action of upsetting pressure, pressure maintaining is performed, and synchronous axial friction welding of the inner ring welding surface and the outer ring welding surface is completed;
f. unloading the component: and opening a welding clamping tool arranged on the main shaft of the inertia friction welding machine, loosening the welding clamping tool on the movable sliding table after the movable sliding table retreats to the specified position, and taking down the welding part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300427.XA CN114012241B (en) | 2020-04-21 | 2020-04-21 | Friction welding method for revolving body component with closed cavity or closed channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010314972.3A CN111515520B (en) | 2020-04-21 | 2020-04-21 | Synchronous axial welding method for variable-diameter multi-welding-surface revolving body component |
| CN202111300427.XA CN114012241B (en) | 2020-04-21 | 2020-04-21 | Friction welding method for revolving body component with closed cavity or closed channel |
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| CN202010314972.3A Division CN111515520B (en) | 2020-04-21 | 2020-04-21 | Synchronous axial welding method for variable-diameter multi-welding-surface revolving body component |
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| CN114012241B true CN114012241B (en) | 2022-05-10 |
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| CN202010314972.3A Active CN111515520B (en) | 2020-04-21 | 2020-04-21 | Synchronous axial welding method for variable-diameter multi-welding-surface revolving body component |
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| CN113814553B (en) * | 2021-10-27 | 2022-11-11 | 中国航空制造技术研究院 | Welding method suitable for narrow and long structural parts |
| CN114101895B (en) * | 2021-11-08 | 2022-07-12 | 中国兵器工业第五九研究所 | Method for controlling flashes of friction welding joint of annular closed cooling cavity |
| CN113857648B (en) * | 2021-11-10 | 2022-04-05 | 中国兵器工业第五九研究所 | Friction welding control and quality evaluation method based on welding seam temperature and splash detection |
| CN113927153B (en) * | 2021-11-10 | 2022-05-13 | 中国兵器工业第五九研究所 | Multi-stage pressure friction welding control and quality evaluation method based on flash vision |
| CN113941767B (en) * | 2021-11-18 | 2022-05-20 | 中国兵器工业第五九研究所 | Low-stress control method for high-carbon steel inertia axial friction welding joint |
| CN114799481B (en) * | 2022-04-27 | 2023-09-26 | 河南中原特钢装备制造有限公司 | Friction welding method for large-diameter pipe fitting of medium-carbon alloy structural steel |
| CN115213547B (en) * | 2022-08-29 | 2023-11-28 | 华能国际电力股份有限公司 | Method for welding fillet weld of header tube socket of boiler by friction welding |
| CN115647566B (en) * | 2022-11-08 | 2024-04-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for improving high-temperature durable service life of inertia friction welding head |
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| CN111515520B (en) | 2021-10-01 |
| CN114012241A (en) | 2022-02-08 |
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