CN114273861B - Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant - Google Patents
Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant Download PDFInfo
- Publication number
- CN114273861B CN114273861B CN202111618114.9A CN202111618114A CN114273861B CN 114273861 B CN114273861 B CN 114273861B CN 202111618114 A CN202111618114 A CN 202111618114A CN 114273861 B CN114273861 B CN 114273861B
- Authority
- CN
- China
- Prior art keywords
- forging
- wing plate
- piece
- extrusion
- namely
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which mainly comprises the steps of blanking, surface treatment, spraying, extrusion, surface treatment, spraying, pre-forging, surface treatment, final forging, annealing and the like. The method can effectively solve the technical problems that the existing precision forging method can not produce a qualified TC4 cross special-shaped wing plate tibial tray, and the TC4 cross special-shaped wing plate tibial tray produced by the precision casting method has low finish, poor mechanical property and poor dimensional accuracy.
Description
Technical Field
The invention relates to the technical field of artificial joint forging processing, in particular to a forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant.
Background
The artificial joint implant with the cross special-shaped wing plate and the tibial tray is a substitute for the damaged tibial tray in the knee joint of a human body, and can be implanted through an operation so as to recover the joint function and improve the life quality of a patient. The TC4 material has the excellent performances of good corrosion resistance, high strength, low elastic modulus, no toxic or side effect and good biocompatibility, and has a very wide application range in the orthopedic implant.
Fig. 1 is a schematic structural diagram of a cross special-shaped wing plate tibial tray artificial joint implant, which comprises a wing plate 1 and a bottom plate 2, wherein the bottom plate is U-shaped, 4 wing plates perpendicular to the bottom plate are shared, the thickness of each wing plate is only 1.7-2.5 mm, the height of each wing plate reaches 39-44 mm, the wing plates are connected in a cross shape, the adjacent two wing plates form an included angle of 90 degrees, the wing plates are bilaterally symmetrical along the symmetrical central line of a U-shaped opening 3 of the bottom plate, two grooves 4 are distributed on two sides of the bottom surface of the bottom plate, and the R angle at the switching position of each groove is smaller and is only R0.3-R0.5. Because the plasticity of the TC4 material is difficult to meet the requirement of filling the shape of the thin wing plate, the defects of filling the shape of the wing plate, cracking, serious strain and the like are very easy to occur in the forging process by using a conventional forging method, and products with qualified size and profile, qualified performance and qualified surface quality are difficult to obtain; at present, no successful case of precision forging and forming of the TC4 cross special-shaped wing plate tibial tray exists in China.
Disclosure of Invention
The invention provides a forging method of an artificial joint implant of a TC4 cross special-shaped wing plate tibial tray, which aims to solve the technical problem that a qualified TC4 cross special-shaped wing plate tibial tray cannot be produced by using a conventional forging method in the prior art.
In order to achieve the above purpose, the invention provides a forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which comprises the following steps:
step 1, blanking, namely selecting TC4 bar stock with proper specification, chamfering the lower end of the bar stock, wherein the bevel angle size is 2x 45-3 x45 mm, and the projected area of the lower end surface of the blanking member along the axis direction of the bar stock is required to cover the projected area of the extrusion wing plate along the same direction;
step 2, surface treatment, namely removing dirt and surface defects on the surface of the bar;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar;
step 4, extruding, namely extruding the bar stock in the step 3 to obtain an extrusion piece;
step 5, surface treatment, namely removing dirt, an anti-oxidation coating and surface defects on the surface of the extrusion;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion;
step 7, pre-forging, namely pre-forging the extrusion piece in the step 6 to obtain a pre-forging piece;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating and surface defects on the surface of the pre-forging piece;
step 9, final forging, namely final forging the pre-forging piece in the step 8 to obtain a final forging piece, wherein wing plates of the final forging piece are consistent with the wing plates of the finished product, and the upper end face and the periphery of the bottom plate are reserved with 0.3-1mm allowance; the forging direction is downward along the axis of the wing plate;
step 10, annealing, namely annealing the final forging piece in the step 9 to obtain a forging piece with qualified structural performance;
and 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing.
Further, in the step 4, the thickness of the extrusion wing plate is 0.02-0.06 mm thinner than that of the pre-forging wing plate, the drawing angle is consistent with that of the pre-forging wing plate, the height of the extrusion wing plate is 60-80% of that of the pre-forging wing plate, the upper end surface of the extrusion wing plate is in transition with the bottom plate by using a round angle, the radius of the round angle is R2-R5, and a discharge hole is arranged in the center of the lower end surface of the wing plate; the projection area of the extrusion bottom plate along the axis direction of the wing plate is required to cover the projection area of the wing plate of the pre-forging piece along the same direction; the forging direction is downward along the wing plate axis.
Further, in the step 7, the thickness of the wing plate of the pre-forging piece is 0.02-0.06 mm thinner than that of the wing plate of the final forging piece, the heights of the wing plate of the pre-forging piece and the wing plate of the final forging piece are consistent, the die drawing angle of the wing plate of the pre-forging piece is consistent with that of the wing plate of the final forging piece, the upper end face of the wing plate of the pre-forging piece is connected with a bottom plate through a round angle, the radius of the round angle is R1-R4, and a discharge hole is arranged in the center of the lower end face of the wing plate; drawing dies for 1-3 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the bottom plate, wherein the lower end surface of the bottom plate is a plane of an unshaped groove; the forging direction is downward along the wing plate axis.
And further, the process of spraying the anti-oxidation coating in the step 3 and the step 6 is that the workpiece is heated at the temperature of 100-200 ℃ for 60-240 min, the directly sprayed coating is taken out, the coating adopts the glass protective lubricant for the finish forging process, and the thickness of the anti-oxidation coating is 0.04-0.08 mm on one side.
Further, in step 4, the extrusion process parameters are: the heating temperature is 930-960 ℃, and the cooling is carried out by adopting a room temperature air cooling mode.
Further, in step 7, the technological parameters of the pre-forging are as follows: the heating temperature is 930-960 ℃, and the cooling is carried out by adopting a room temperature air cooling mode.
Further, in step 9, the process parameters of the final forging are as follows: the heating temperature is 890-920 ℃, and a room temperature air cooling mode is adopted.
Compared with the prior art, the invention has the following beneficial effects: according to the forging method of the TC4 cross special-shaped wing plate tibial tray artificial joint implant, disclosed by the invention, the non-cutting machining and forming of key bearing parts such as the wing plate, the bottom surface of the bottom plate and the like of the TC4 cross special-shaped wing plate tibial tray artificial joint implant can be realized through reasonable precision forging step design, machining is not required except the lower end surface and the periphery of the bottom plate, the machining amount can be greatly reduced, the machining difficulty and cost are reduced, and the dimensional accuracy is improved; because the key bearing parts are directly molded to a finished product state, a metal structure which is distributed and uniform along the shape continuity of the product can be obtained, the mechanical property of the cross special-shaped wing plate tibial tray can be improved, the blank that the TC4 material cross special-shaped wing plate tibial tray which is not forged in China is filled, and the TC4 material cross special-shaped wing plate tibial tray which is precisely forged and molded and has qualified shape, size, surface quality and mechanical property can be manufactured.
Drawings
FIG. 1 is a schematic view of the overall structure of a tibial tray prosthetic joint implant with a cross shaped wing plate;
FIG. 2 is a schematic view of the structure of the base plate of FIG. 1;
FIG. 3 is a top view of the blanking member of the present invention;
FIG. 4 is a side view of the blanking member of the present invention;
FIG. 5 is a top view of an extrusion of the present invention;
FIG. 6 is a side view of an extrusion of the present invention;
FIG. 7 is a top view of a pre-forging in accordance with the present invention;
FIG. 8 is a side view of a pre-forging in accordance with the present invention;
FIG. 9 is a top view of the final forging of the present invention;
FIG. 10 is a side view of a final forging in accordance with the present invention;
FIG. 11 is a photograph of a crystalline phase of a cross-shaped wing tibial tray prepared in example 1 of the present invention;
FIG. 12 is a photograph of a crystalline phase of a cross-shaped wing tibial tray prepared in example 2 of the present invention;
FIG. 13 is a photograph of a crystalline phase of a cross-shaped wing tibial tray prepared in example 3 of the present invention;
fig. 14 is a mechanical property test result of the tibia support with the cross-shaped wing plate manufactured in the embodiment 1 of the present invention;
fig. 15 is a mechanical property test result of the tibia support with the cross-shaped wing plate manufactured in the embodiment 2 of the present invention;
fig. 16 is a mechanical property test result of the tibia tray with the cross-shaped wing plate manufactured in example 3 of the present invention.
Reference numerals illustrate: 1-bottom plate, 2-wing plate, 3-U-shaped mouth, 4-groove, 21-extrusion bottom plate, 22-extrusion wing plate, 23-extrusion discharge hole, 31-pre-forging bottom plate, 32-pre-forging wing plate, 33-pre-forging discharge hole, 34-pre-forging bottom plate U-shaped mouth, 41-final forging bottom plate, 42-final forging wing plate and 43-final forging groove.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1-10, the invention provides a forging method of a TC4 cross shaped wing plate tibial tray artificial joint implant, comprising the following steps:
step 1, blanking, namely selecting TC4 bars with proper specifications according to the projection area of the extrusion wing plate 22 along the forging direction and the deformation requirement of TC4 materials, wherein the lower end face of the blanked bars needs to be ensured to have no obvious saw marks or knife marks, the lower ends of the bars are chamfered, and the bevel angle size is 2x 45-3 x45 mm;
step 2, surface treatment, namely removing cutting fluid, burrs, tool marks and connecting tool marks on the surface of the bar through the working procedures of shot blasting, polishing and the like of steel grit;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar, heating the bar at the temperature of 100-200 ℃ for 60-240 min, taking out the glass protective lubricant for direct spraying precision forging process, wherein the thickness of the anti-oxidation coating is 0.04-0.08 mm on one side;
step 4, extruding, namely placing the bar stock in the step 3 into an electric furnace to heat to 930-960 ℃, preserving heat, taking out, immediately placing the bar stock into a female die which is sprayed with a die lubricant in advance to forge to obtain an extruded piece, taking out, cooling the extruded piece by adopting a room-temperature air cooling mode, wherein the thickness of a wing plate 22 of the extruded piece is 0.02-0.06 mm thinner than that of a wing plate 32 of the pre-forged piece, the drawing angle of the extruded piece is consistent with that of the wing plate of the pre-forged piece, the design is more beneficial to the forming and forging operation of the wing plate, the height of the wing plate 22 of the extruded piece is 60-80% of the height of the wing plate 32 of the pre-forged piece, the upper end face of the wing plate 22 of the extruded piece is connected with the bottom plate 21 of the extruded piece by a round angle, the radius of the round angle is preferably R2-R5, and a cylindrical extrusion discharging hole 23 is arranged in the center of the lower end face of the wing plate 22 of the extruded piece; the projected area of the extrusion bottom plate 21 along the axial direction of the extrusion wing plate 22 is required to cover the projected area of the pre-forging wing plate 32 along the same direction; the forging direction is down the axis of the extrusion wing 22.
Step 5, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the extrusion part through the procedures of shot blasting, trimming and the like of steel grit;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion, heating the extrusion at the temperature of 100-200 ℃ for 60-240 min, taking out the glass protective lubricant for direct spraying precision forging process, wherein the thickness of the anti-oxidation coating is 0.04-0.08 mm;
step 7, pre-forging, namely heating the extrusion in the step 6 to 930-960 ℃ in an electric furnace, taking out the extrusion after heat preservation, immediately placing the extrusion into a female die with pre-sprayed die lubricant for forging to obtain a pre-forging, wherein the thickness of a pre-forging wing plate 32 is 0.02-0.06 mm thinner than that of a final-forging wing plate 42, the heights of the pre-forging wing plate 32 and the final-forging wing plate 42 are consistent, the die drawing angle of the pre-forging wing plate 32 is consistent with that of the final-forging wing plate 42, the upper end face of the pre-forging wing plate 32 is in round corner switching with the pre-forging bottom plate 31, the round corner radius is preferably R1-R4, and a cylindrical pre-forging discharging hole 33 is arranged at the center of the lower end face of the pre-forging wing plate 32; drawing dies for 1-3 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the pre-forging bottom plate 34, wherein the lower end surface of the pre-forging bottom plate 31 is a plane of an unformed groove; the forging direction is downward along the axis of the pre-forging wing plate 32;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the pre-forging piece through the procedures of shot blasting, trimming and the like of the steel grit;
step 9, final forging, namely placing the pre-forging in the step 8 into an electric furnace, heating to the temperature of 890-920 ℃, taking out the pre-forging after heat preservation, immediately placing the pre-forging into a female die with pre-sprayed die lubricant for forging to obtain the final forging, then taking out the final forging, cooling the final forging by adopting a room temperature air cooling mode, wherein a wing plate 42 of the final forging is consistent with a wing plate 2 of a cross special-shaped wing plate tibial tray, a groove 43 of the final forging is consistent with a groove 4 of the cross special-shaped wing plate tibial tray, the upper end face of a bottom plate 41 of the final forging is left with a margin of 0.3-0.5 mm, the periphery of the bottom plate is left with a margin of 1-1.5 mm, and the rest of the bottom plate is consistent with a bottom plate 1 of the cross special-shaped wing plate tibial tray; the forging direction is downward along the axis of the final forging wing plate 42;
step 10, annealing process parameters are as follows: heating to 750 ℃, keeping the temperature for 60min, and cooling by adopting an air cooling mode;
step 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing;
the heating time t in the steps 4, 7 and 9 is calculated according to the following formula:
t=h×0.5+3 to 8min, H being the equivalent thickness dimension of the blank in mm;
in the method, dies used for extrusion, pre-forging and final forging are different, and parameters of the dies are designed according to the shape of a preformed target forging in each step.
The forging method of the present invention will be described in detail with reference to several specific examples.
Example 1
A forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which comprises the following steps:
step 1, blanking, namely selecting a phi 40mmTC4 bar with the length of 39.4mm, ensuring that no obvious saw mark or knife mark exists on the lower end surface of the blanked bar, chamfering the lower end of the bar, wherein the bevel angle size is 2x 45-3 x45 DEG mm;
step 2, surface treatment, namely removing cutting fluid, burrs, tool marks and connecting tool marks on the surface of the bar through the procedures of shot blasting, polishing and the like of steel grit;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar, heating the bar at the temperature of 100 ℃ for 60min, taking out the bar, and directly spraying a glass protective lubricant for a precision forging process, wherein the thickness of the anti-oxidation coating is 0.04mm on one side;
step 4, extruding, namely placing the bar stock in the step 3 into an electric furnace to heat to 930 ℃, preserving heat for 17min, taking out, immediately placing the bar stock into a female die which is sprayed with a die lubricant in advance to forge to obtain an extruded piece, taking out, cooling the extruded piece by adopting a room-temperature air cooling mode, wherein the thickness of a wing plate 22 of the extruded piece is 0.02mm thinner than that of a single side of the wing plate 32 of the pre-forged piece, the drawing angle of the extruded piece is consistent with that of the wing plate 32 of the pre-forged piece, the design is more beneficial to the forming and forging operation of the wing plate, the height of the wing plate 22 of the extruded piece is 60% of that of the wing plate 32 of the pre-forged piece, the upper end face of the wing plate 22 of the extruded piece is connected with the bottom plate 21 of the extruded piece by using a round angle, the radius R3 of the round angle, and the central position of the lower end face of the wing plate 22 of the extruded piece is provided with a cylindrical extruding piece discharging hole 23; the projected area of the extrusion bottom plate 21 along the axial direction of the extrusion wing plate 22 is required to cover the projected area of the pre-forging wing plate 32 along the same direction; the forging direction is down the axis of the extrusion wing 22.
Step 5, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the extrusion part through the procedures of shot blasting, trimming and the like of steel grit;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion, heating the extrusion at 100-200 ℃ for 60min, taking out the glass protective lubricant for direct spraying precision forging process, wherein the thickness of the anti-oxidation coating is 0.04mm;
step 7, pre-forging, namely heating the extrusion in the step 6 to 930 ℃ in an electric furnace, preserving heat for 10min, taking out, immediately forging in a female die with pre-sprayed die lubricant to obtain a pre-forging, wherein the thickness of a wing plate 32 of the pre-forging is 0 thinner than that of a wing plate 42 of the final forging02mm, the height of the pre-forging wing plate 32 is consistent with that of the final forging wing plate 42, the drawing angle of the pre-forging wing plate 32 is consistent with that of the final forging wing plate 42, the upper end face of the pre-forging wing plate 32 is in round corner switching with the pre-forging bottom plate 31, the round corner radius R2 is used for switching, a cylindrical pre-forging discharging hole 33 is arranged in the center of the lower end face of the pre-forging wing plate 32, and the diameter of the pre-forging discharging hole is equal to that of the final forging wing plate 42Drawing dies 2 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the pre-forging bottom plate 34, wherein the lower end surface of the pre-forging bottom plate 31 is a plane of an unformed groove; the forging direction is downward along the axis of the pre-forging wing plate 32;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the pre-forging piece through the procedures of shot blasting, trimming and the like of the steel grit;
step 9, final forging, namely placing the pre-forging in the step 8 into an electric furnace, heating to the temperature of 890 ℃, preserving heat for 7min, taking out, immediately placing into a female die with a pre-sprayed die lubricant for forging to obtain a final forging, taking out, cooling in a room temperature air cooling mode, wherein a wing plate 42 of the final forging is consistent with a wing plate 2 of a cross special-shaped wing plate tibial tray, a groove 43 of the final forging is consistent with a groove 4 of the cross special-shaped wing plate tibial tray, the upper end face of a bottom plate 41 of the final forging is left for 0.4mm, the periphery is left for 1.2mm, and the rest is consistent with a bottom plate 1 of the cross special-shaped wing plate tibial tray; the forging direction is downward along the axis of the final forging wing plate 42;
step 10, annealing, namely heating the final forging piece in the step 9 to the temperature of 750 ℃, preserving heat for 60min, and cooling by adopting an air cooling mode;
step 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing;
the crystal phase micrograph of the cross special-shaped wing plate tibial tray manufactured in the embodiment is shown in figure 11, and the high-power tissue is composed of uniform and tiny alpha-beta phase tissue, no continuous alpha phase exists at the primary alpha phase crystal boundary, the technical requirement high-power tissue is composed of uniform and tiny alpha-beta phase tissue, and no continuous alpha phase exists at the primary alpha phase crystal boundary, so that the high-power tissue requirement is achieved.
The mechanical property detection result of the cross special-shaped wing plate tibial tray manufactured by the embodiment is shown in fig. 14, and the mechanical property is obviously higher than the design requirement, so that the cross special-shaped wing plate tibial tray has excellent mechanical property and long service life.
Example 2
A forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which comprises the following steps:
step 1, blanking, namely selecting a phi 40mmTC4 bar with the length of 39.4mm, ensuring that no obvious saw mark or knife mark exists on the lower end surface of the blanked bar, chamfering the lower end of the bar, wherein the bevel angle size is 2x 45-3 x45 DEG mm;
step 2, surface treatment, namely removing cutting fluid, burrs, tool marks and connecting tool marks on the surface of the bar through the procedures of shot blasting, polishing and the like of steel grit;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar, heating the bar at the temperature of 100 ℃ for 120min, taking out the bar, and directly spraying a glass protective lubricant for a precision forging process, wherein the thickness of the anti-oxidation coating is 0.06mm;
step 4, extruding, namely placing the bar stock in the step 3 into an electric furnace to heat to 940 ℃, preserving heat for 18min, taking out, immediately placing the bar stock into a female die with a pre-sprayed die lubricant for forging to obtain an extruded piece, taking out, cooling the bar stock by adopting a room-temperature air cooling mode, wherein the thickness of an extruded piece wing plate 22 is 0.04mm thinner than that of a pre-forged piece wing plate 32, the die drawing angle is consistent with that of the pre-forged piece wing plate 32, the design is more beneficial to the forming and forging operation of the wing plate, the height of the extruded piece wing plate 22 is 70% of the height of the pre-forged piece wing plate 32, the upper end face of the extruded piece wing plate 22 is in round corner transfer connection with an extruded piece bottom plate 21, the round corner radius R3 is arranged at the center of the lower end face of the extruded piece wing plate 22, the cylindrical extruded piece discharging hole 23 is arranged, and the diameter of the extruded piece discharging hole 23 is more beneficial to the forming and forging operation of the wing plateThe projected area of the extrusion bottom plate 21 along the axial direction of the extrusion wing plate 22 is required to cover the projected area of the pre-forging wing plate 32 along the same direction; forging direction along extrusion wing plateThe 22 axis is downward.
Step 5, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the extrusion part through the procedures of shot blasting, trimming and the like of steel grit;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion, heating the extrusion at 100-200 ℃ for 120min, taking out the glass protective lubricant for direct spraying precision forging process, wherein the thickness of the anti-oxidation coating is 0.06mm on one side;
step 7, pre-forging, namely heating the extrusion piece in the step 6 to 940 ℃ in an electric furnace, preserving heat for 11min, taking out, immediately placing the extrusion piece into a female die with pre-sprayed die lubricant, forging to obtain a pre-forging piece, wherein the thickness of a pre-forging piece wing plate 32 is 0.04mm thinner than that of a final-forging piece wing plate 42, the heights of the pre-forging piece wing plate 32 and the final-forging piece wing plate 42 are consistent, the drawing angle of the pre-forging piece wing plate 32 is consistent with that of the final-forging piece wing plate 42, the upper end face of the pre-forging piece wing plate 32 is in round corner switching with the pre-forging piece bottom plate 31, the round corner radius R2 is arranged at the center of the lower end face of the pre-forging piece wing plate 32, a cylindrical pre-forging piece discharging hole 33 is arranged, and the diameter of the pre-forging piece discharging hole 33 is equal to that of the final-forging piece wing plate 42Drawing dies 2 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the pre-forging bottom plate 34, wherein the lower end surface of the pre-forging bottom plate 31 is a plane of an unformed groove; the forging direction is downward along the axis of the pre-forging wing plate 32;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the pre-forging 30 through the procedures of shot blasting, trimming and the like;
step 9, final forging, namely placing the pre-forging in the step 8 into an electric furnace, heating to the temperature of 905 ℃, preserving heat for 8min, taking out, immediately placing into a female die with a pre-sprayed die lubricant for forging to obtain a final forging, then taking out, cooling in a room temperature air cooling mode, wherein a wing plate 42 of the final forging is consistent with a wing plate 2 of a cross special-shaped wing plate tibial tray, a groove 43 of the final forging is consistent with a groove 4 of the cross special-shaped wing plate tibial tray, the upper end face of a bottom plate 41 of the final forging is left for 0.4mm, the periphery is left for 1.2mm, and the rest is consistent with a bottom plate 1 of the cross special-shaped wing plate tibial tray; the forging direction is downward along the axis of the final forging wing plate 42;
step 10, annealing, namely heating the final forging piece in the step 9 to the temperature of 750 ℃, preserving heat for 60min, and cooling by adopting an air cooling mode;
step 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing;
the crystal phase micrograph of the cross special-shaped wing plate tibial tray manufactured by processing in the embodiment is shown in figure 12, and the high-power tissue is composed of uniform and tiny alpha-beta phase tissue, no continuous alpha phase exists at the primary alpha phase crystal boundary, and the technical requirement high-power tissue is composed of uniform and tiny alpha-beta phase tissue, and no continuous alpha phase exists at the primary alpha phase crystal boundary, so that the high-power tissue requirement is achieved.
The mechanical property detection result of the cross special-shaped wing plate tibial tray manufactured by the embodiment is shown in fig. 15, and the mechanical property is obviously higher than the design requirement, so that the cross special-shaped wing plate tibial tray has excellent mechanical property and long service life.
Example 3
A forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which comprises the following steps:
step 1, blanking, namely selecting a phi 40mmTC4 bar with the length of 39.4mm, ensuring that no obvious saw mark or knife mark exists on the lower end surface of the blanked bar, chamfering the lower end of the bar, wherein the bevel angle size is 2x 45-3 x45 DEG mm;
step 2, surface treatment, namely removing cutting fluid, burrs, tool marks and connecting tool marks on the surface of the bar through the procedures of shot blasting, polishing and the like of steel grit;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar, heating the bar at the temperature of 100 ℃ for 240min, taking out the bar, and directly spraying a glass protective lubricant for a precision forging process, wherein the thickness of the anti-oxidation coating is 0.08mm;
step 4, extruding, namely heating the bar stock in the step 3 to 960 ℃ in an electric furnace, preserving heat for 19min, taking out, immediately placing the bar stock in a female die with a pre-sprayed die lubricant for forging to obtain an extruded piece, and taking out the extruded piece at room temperatureThe cold mode is used for cooling, the thickness of the extrusion wing plate 22 is 0.06mm thinner than that of the pre-forging wing plate 32, the drawing angle is consistent with that of the pre-forging wing plate 32, the design is more beneficial to the forming and forging operation of the wing plate, the height of the extrusion wing plate 22 is 80% of that of the pre-forging wing plate 32, the upper end face of the extrusion wing plate 22 is in fillet switching with the extrusion bottom plate 21, the fillet radius R3 is used for switching, a cylindrical extrusion discharging hole 23 is arranged at the center of the lower end face of the extrusion wing plate 22, and the diameter of the extrusion discharging hole 23 is equal to that of the extrusion discharging holeThe projected area of the extrusion bottom plate 21 along the axial direction of the extrusion wing plate 22 is required to cover the projected area of the pre-forging wing plate 32 along the same direction; the forging direction is down the axis of the extrusion wing 22.
Step 5, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the extrusion part through the procedures of shot blasting, trimming and the like of steel grit;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion, heating the extrusion at 100-200 ℃ for 240min, and taking out the glass protective lubricant for direct spraying precision forging process, wherein the thickness of the anti-oxidation coating is 0.08mm;
step 7, pre-forging, namely heating the extrusion piece in the step 6 to 960 ℃ in an electric furnace, preserving heat for 12min, taking out, immediately placing the extrusion piece into a female die with pre-sprayed die lubricant, forging to obtain a pre-forging piece, wherein the thickness of a pre-forging piece wing plate 32 is 0.06mm thinner than that of a final-forging piece wing plate 42, the heights of the pre-forging piece wing plate 32 and the final-forging piece wing plate 42 are consistent, the drawing angle of the pre-forging piece wing plate 32 is consistent with that of the final-forging piece wing plate 42, the upper end face of the pre-forging piece wing plate 32 is in round corner switching with the pre-forging piece bottom plate 31, the round corner radius R2 is arranged at the center of the lower end face of the pre-forging piece wing plate 32, a cylindrical pre-forging piece discharging hole 33 is arranged, and the diameter of the pre-forging piece discharging hole 33 is equal to that of the final-forging piece wing plate 42Drawing dies 2 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the pre-forging bottom plate 34, wherein the lower end surface of the pre-forging bottom plate 31 is a plane of an unformed groove; forging direction along pre-forging wingThe axis of the plate 32 is downward;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating, pits, burrs and other surface defects on the surface of the pre-forging piece through the procedures of shot blasting, trimming and the like of the steel grit;
step 9, final forging, namely placing the pre-forging in the step 8 into an electric furnace, heating to the temperature of 920 ℃, preserving heat for 9min, taking out, immediately placing into a female die with a pre-sprayed die lubricant for forging to obtain a final forging, then taking out, cooling in a room temperature air cooling mode, wherein a wing plate 42 of the final forging is consistent with a wing plate 2 of a cross special-shaped wing plate tibial tray, a groove 43 of the final forging is consistent with a groove 4 of the cross special-shaped wing plate tibial tray, the upper end face of a bottom plate 41 of the final forging is left for 0.4mm, the periphery is left for 1.2mm, and the rest is consistent with a bottom plate 1 of the cross special-shaped wing plate tibial tray; the forging direction is downward along the axis of the final forging wing plate 42;
step 10, annealing, namely heating the final forging piece in the step 9 to the temperature of 750 ℃, preserving heat for 60min, and cooling by adopting an air cooling mode;
step 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing;
the crystal phase micrograph of the cross special-shaped wing plate tibial tray manufactured by processing in the embodiment is shown in figure 13, and the high-power tissue is composed of uniform and tiny alpha-beta phase tissue, no continuous alpha phase exists at the primary alpha phase crystal boundary, and the technical requirement high-power tissue is composed of uniform and tiny alpha-beta phase tissue, and no continuous alpha phase exists at the primary alpha phase crystal boundary, so that the high-power tissue requirement is achieved.
The mechanical property detection result of the cross special-shaped wing plate tibial tray manufactured by the embodiment is shown in fig. 16, and the mechanical property is obviously higher than the design requirement, so that the cross special-shaped wing plate tibial tray has excellent mechanical property and long service life.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: the invention can realize the non-cutting processing and forming of key bearing parts such as the wing plate of the TC4 cross special-shaped wing plate tibial tray artificial joint implant, the bottom surface of the bottom plate and the like by scientifically and reasonably designing parameters such as the shape, the size and the like of the extrusion part, the pre-forging part and the final forging part through a scientific and reasonable precision forging step design, and does not need to be mechanically processed except the lower end surface and the periphery of the bottom plate, thereby greatly reducing the machining amount, reducing the machining difficulty and the cost and improving the dimensional accuracy; because the key bearing parts are directly molded to the finished product state, the metal structure which is distributed continuously and uniformly along the shape of the product can be obtained, and the mechanical property of the tibia support of the cross special-shaped wing plate can be improved. The precise forging process scheme of the TC4 material cross special-shaped wing plate tibial tray fills the blank that no forging forming TC4 material cross special-shaped wing plate tibial tray exists in China, and can provide the precise forging forming TC4 material cross special-shaped wing plate tibial tray with qualified shape, size, surface quality and mechanical property.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (1)
1. A forging method of a TC4 cross special-shaped wing plate tibial tray artificial joint implant, which is characterized by comprising the following steps of:
step 1, blanking, namely selecting TC4 bar stock with proper specification, chamfering the lower end of the bar stock, wherein the bevel angle size is 2x 45-3 x45 mm, and the projected area of the lower end surface of the blanking member along the axis direction of the bar stock is required to cover the projected area of the extrusion wing plate along the same direction;
step 2, surface treatment, namely removing dirt and surface defects on the surface of the bar;
step 3, spraying, namely spraying an anti-oxidation coating on the surface of the bar;
step 4, extruding, namely extruding the bar stock in the step 3 to obtain an extrusion piece;
step 5, surface treatment, namely removing dirt, an anti-oxidation coating and surface defects on the surface of the extrusion;
step 6, spraying, namely spraying an anti-oxidation coating on the surface of the extrusion;
step 7, pre-forging, namely pre-forging the extrusion piece in the step 6 to obtain a pre-forging piece;
step 8, surface treatment, namely removing dirt, an anti-oxidation coating and surface defects on the surface of the pre-forging piece;
step 9, final forging, namely final forging the pre-forging piece in the step 8 to obtain a final forging piece, wherein wing plates of the final forging piece are consistent with the wing plates of the finished product, and the upper end face and the periphery of the bottom plate are reserved with 0.3-1mm allowance; the forging direction is downward along the axis of the wing plate;
step 10, annealing, namely annealing the final forging piece in the step 9 to obtain a forging piece with qualified structural performance;
step 11, surface treatment, namely removing dirt and surface defects on the surface of the final forging after annealing; in the step 4, the thickness of the extrusion wing plate is 0.02-0.06 mm thinner than that of the pre-forging wing plate, the drawing angle is consistent with that of the pre-forging wing plate, the height of the extrusion wing plate is 60-80% of that of the pre-forging wing plate, the upper end surface of the extrusion wing plate is in transition with the bottom plate by using a round angle, the radius of the round angle is R2-R5, and a discharge hole is arranged in the center of the lower end surface of the wing plate; the projection area of the extrusion bottom plate along the axis direction of the wing plate is required to cover the projection area of the wing plate of the pre-forging piece along the same direction; the forging direction is downward along the axis of the wing plate; in the step 7, the thickness of the wing plate of the pre-forging piece is 0.02-0.06 mm thinner than that of the wing plate of the final forging piece, the heights of the wing plate of the pre-forging piece and the wing plate of the final forging piece are consistent, the drawing angle of the wing plate of the pre-forging piece is consistent with that of the wing plate of the final forging piece, the upper end face of the wing plate of the pre-forging piece is in transition with the bottom plate by using a round angle, the radius of the round angle is R1-R4, and a discharging hole is arranged at the center of the lower end face of the wing plate; drawing dies for 1-3 degrees along the opening direction of the U-shaped opening at two sides of the U-shaped opening of the bottom plate, wherein the lower end surface of the bottom plate is a plane of an unshaped groove; the forging direction is downward along the axis of the wing plate; the process of spraying the anti-oxidation coating in the step 3 and the step 6 is that a workpiece is heated at the temperature of 100-200 ℃ for 60-240 min, the workpiece is taken out to be directly sprayed with the coating, the coating adopts the glass protective lubricant for the precision forging process, and the thickness of the anti-oxidation coating is 0.04-0.08 mm on one side; in the step 4, the extrusion process parameters are as follows: the heating temperature is 930-960 ℃, and the cooling is carried out by adopting a room temperature air cooling mode; in the step 7, the technological parameters of the pre-forging are as follows: the heating temperature is 930-960 ℃, and the cooling is carried out by adopting a room temperature air cooling mode;
in the step 9, the process parameters of final forging are as follows: the heating temperature is 890-920 ℃, and a room temperature air cooling mode is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111618114.9A CN114273861B (en) | 2021-12-27 | 2021-12-27 | Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111618114.9A CN114273861B (en) | 2021-12-27 | 2021-12-27 | Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114273861A CN114273861A (en) | 2022-04-05 |
| CN114273861B true CN114273861B (en) | 2023-09-01 |
Family
ID=80876488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111618114.9A Active CN114273861B (en) | 2021-12-27 | 2021-12-27 | Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114273861B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005111558A (en) * | 2003-02-18 | 2005-04-28 | Showa Denko Kk | Metal forged product, upper or lower arm, preform of the arm, production method for the metal forged product, forging die, and metal forged product production system |
| CN103659186A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Medical titanium alloy artificial joint precise forging method |
| CN103667800A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Precise forging method for CoCrMo alloy artificial joint |
| DE102014103962A1 (en) * | 2014-03-24 | 2015-09-24 | Ghv Schmiedetechnik Gmbh | Feumurkomponente a hip joint prosthesis and method for producing a femoral component of a hip joint prosthesis |
| CN108261271A (en) * | 2018-02-13 | 2018-07-10 | 宝鸡市英耐特医用钛有限公司 | A kind of bowl-type titanium alloy prosthetic connector element with installation side |
| CN110369655A (en) * | 2019-08-08 | 2019-10-25 | 无锡航亚科技股份有限公司 | A kind of forging method of CoCrMo tibial plateau prosthetic joint implants |
| CN110369654A (en) * | 2019-08-08 | 2019-10-25 | 无锡航亚科技股份有限公司 | A kind of forging method of titanium alloy tibial plateau prosthetic joint implants |
| CN110899587A (en) * | 2019-12-03 | 2020-03-24 | 无锡航亚科技股份有限公司 | Forging forming method of precise tibial plateau artificial joint implant |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6743204B2 (en) * | 2001-04-13 | 2004-06-01 | Medtronic, Inc. | Implantable drug delivery device with peristaltic pump having retracting roller |
| CN106141069A (en) * | 2016-09-10 | 2016-11-23 | 吉林大学 | Railway vehicle truck coupler knuckle near net method for forging and molding |
-
2021
- 2021-12-27 CN CN202111618114.9A patent/CN114273861B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005111558A (en) * | 2003-02-18 | 2005-04-28 | Showa Denko Kk | Metal forged product, upper or lower arm, preform of the arm, production method for the metal forged product, forging die, and metal forged product production system |
| CN103659186A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Medical titanium alloy artificial joint precise forging method |
| CN103667800A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Precise forging method for CoCrMo alloy artificial joint |
| DE102014103962A1 (en) * | 2014-03-24 | 2015-09-24 | Ghv Schmiedetechnik Gmbh | Feumurkomponente a hip joint prosthesis and method for producing a femoral component of a hip joint prosthesis |
| CN108261271A (en) * | 2018-02-13 | 2018-07-10 | 宝鸡市英耐特医用钛有限公司 | A kind of bowl-type titanium alloy prosthetic connector element with installation side |
| CN110369655A (en) * | 2019-08-08 | 2019-10-25 | 无锡航亚科技股份有限公司 | A kind of forging method of CoCrMo tibial plateau prosthetic joint implants |
| CN110369654A (en) * | 2019-08-08 | 2019-10-25 | 无锡航亚科技股份有限公司 | A kind of forging method of titanium alloy tibial plateau prosthetic joint implants |
| CN110899587A (en) * | 2019-12-03 | 2020-03-24 | 无锡航亚科技股份有限公司 | Forging forming method of precise tibial plateau artificial joint implant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114273861A (en) | 2022-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110369655B (en) | Forging method of CoCrMo tibial plateau artificial joint implant | |
| CN103659186B (en) | A kind of medical titanium alloy joint prosthesis precision forging method | |
| CN109439936B (en) | Preparation method of medium-strength high-toughness titanium alloy ultra-large-specification ring material | |
| CN102350615B (en) | Shunt blocking forming method for star-shaped sleeve | |
| CN110369654B (en) | Forging method of titanium alloy tibial plateau artificial joint implant | |
| CN108817875B (en) | Production method and production system of bevel gear | |
| CN109676333B (en) | Machining process for high-strength wear-resistant titanium alloy forging die profile | |
| CN106624652A (en) | Rotary forging forming method for metal circular plate | |
| CN102728773A (en) | One-time cold-forging blocking forming method for inner star wheel | |
| CN110899587B (en) | Forging forming method of precise tibial plateau artificial joint implant | |
| CN105311801A (en) | Manufacturing method for hitting panel of golf club head | |
| CN102319851B (en) | Cold precision forging technique for Z type contacts | |
| CN110238342A (en) | The forging and manufacturing process of gear | |
| CN114273861B (en) | Forging method of TC4 cross special-shaped wing plate tibial tray artificial joint implant | |
| CN111745105A (en) | Forging forming method of artificial shoulder humerus handle | |
| CN112338118A (en) | Precision forging forming method of titanium alloy femoral stem | |
| CN1022222C (en) | Machining method and apparatus of dies for precise fooge of bevel gears | |
| CN105666047B (en) | One kind has rectangle external splines hollow shaft and its manufacture method | |
| CN107262647A (en) | A kind of method for upsetting of large-scale round steel bar | |
| CN111570606B (en) | Fine blanking die with integral strength and work hardening of blanking surface and fine blanking method | |
| CN209716339U (en) | A kind of active triple gear cone tooth and end tooth shape closed-die forging device only simultaneously | |
| JP4714875B2 (en) | Implant for in-vivo implantation and method for producing the same | |
| CN108284170A (en) | A kind of straight flange spherical shell manufacturing process | |
| CN108817871A (en) | A kind of method of manufacturing technology of automobile VCR engine internal tooth tooth plate | |
| JP2518980B2 (en) | Method for drilling precision aluminum alloy product with holes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |