CN111730015A - Method for forging hip joint femoral stem - Google Patents

Method for forging hip joint femoral stem Download PDF

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Publication number
CN111730015A
CN111730015A CN202010633360.0A CN202010633360A CN111730015A CN 111730015 A CN111730015 A CN 111730015A CN 202010633360 A CN202010633360 A CN 202010633360A CN 111730015 A CN111730015 A CN 111730015A
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China
Prior art keywords
forging
coating
hip joint
femoral stem
joint femoral
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Pending
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CN202010633360.0A
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Chinese (zh)
Inventor
李建军
李湘军
何涛
李升峰
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Wuxi Hyatech Technology Co ltd
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Wuxi Hyatech Technology Co ltd
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Priority to CN202010633360.0A priority Critical patent/CN111730015A/en
Publication of CN111730015A publication Critical patent/CN111730015A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3672—Intermediate parts of shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J3/00—Lubricating during forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K29/00—Arrangements for heating or cooling during processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30976—Designing or manufacturing processes using hydrojet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A61F2002/3623—Non-spherical heads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3654—Connections of heads directly to shafts

Abstract

The invention provides a method for forging a hip joint femoral stem, which comprises the following steps: selecting a CoCrMo bar stock for blanking; dip-coating the blanking piece with paint; heating, shaping and cooling the blanking piece to obtain a hip joint femoral stem blank; carrying out spraying coating treatment on the blank; heating and cooling the blank to obtain a pre-forged piece; finishing the pre-forged piece; and heating and cooling the pre-forging to obtain a final forging finished product. According to the forging method of the hip joint femoral stem, CoCrMo is used as a raw material, and steps of blanking, dip coating, blank making, spraying, pre-forging, finishing and finish forging are sequentially carried out to obtain a finished product of the hip joint femoral stem, machining is not needed except for the head, machining amount is greatly reduced, machining difficulty and cost are reduced, the obtained hip joint femoral stem is excellent in appearance shape and surface quality, good in mechanical properties such as wear resistance and strength, long in service life and suitable for mass production.

Description

Method for forging hip joint femoral stem
Technical Field
The invention relates to the technical field of artificial joint forging processing, in particular to a method for forging a hip joint femoral stem.
Background
The artificial hip joint replacement operation is a relatively common surgical operation in the medical field at present, a femoral stem is used as a surgical implant for replacing a human hip joint femoral part and is always a research object of people, the hip joint femoral stem is mostly produced by adopting a casting mode at present, the machining amount is large, the difficulty is large, the cost is high, the obtained hip joint femoral stem has poor mechanical property, the surface appearance quality does not reach the standard, and the service life is short.
In view of the above, there is a need for an improved hip stem manufacturing method in the prior art to solve the above problems.
Disclosure of Invention
The invention aims to disclose a method for forging a hip joint femoral stem, which takes CoCrMo as a raw material to obtain a finished product of the hip joint femoral stem through the steps of blanking, dip coating, blank making, spraying, pre-forging, finishing and finish forging in sequence, and does not need to perform machining except the head, thereby greatly reducing the machining amount and reducing the machining difficulty and cost.
In order to achieve the aim, the invention provides a method for forging a hip joint femoral stem, which comprises the following steps:
the method comprises the following steps: selecting a CoCrMo bar stock for blanking;
step two: dip-coating the blanking piece with paint;
step three: heating, shaping and cooling the blanking piece to obtain a hip joint femoral stem blank;
step four: carrying out spraying coating treatment on the blank;
step five: heating and cooling the blank to obtain a pre-forged piece;
step six: finishing the pre-forged piece;
step seven: and heating and cooling the pre-forging to obtain a final forging finished product.
In some embodiments, in step one: selecting a CoCrMo bar material with a proper specification according to the size and the maximum section of the hip joint femoral stem.
In some embodiments, in the second step, before dip-coating the coating, the surface of the blanking part is cleaned; the coating adopts a glass protective lubricant, the thickness of the coating is 0.04-0.08 mm, and after the coating is coated, the coating is heated for 60-90 min at the temperature of 100-200 ℃.
In some embodiments, in step three: the blank making mode is upsetting and bending.
In some embodiments, in step three: the heating temperature is 1020-1080 ℃, the cooling is carried out by adopting a room temperature air cooling mode, and the graphite is adopted for lubrication in the forming process.
In some embodiments, in step four: cleaning the surface of the blank before spraying the coating; the coating adopts a glass protective lubricant, the thickness of the coating is 0.04-0.08 mm, and after the coating is coated, the coating is heated for 60-90 min at the temperature of 100-200 ℃.
In some embodiments, in the fifth step, the heating temperature is 1110 ℃ to 1170 ℃, the cooling is performed by adopting a room-temperature air cooling mode, and the graphite is adopted for lubrication in the forming process.
In some embodiments, in step six: and (4) processing by adopting a vibration finishing mode, wherein the finishing time is 2-4 h.
In some embodiments, in step seven: heating in the inert gas protection atmosphere at 1020-1080 ℃, cooling in a room temperature air cooling mode, and lubricating by using graphite in the forming process.
In some embodiments, the shortest heating time t ═ H × k + (2-5) min, H is the thickest dimension of the heated member and is measured in mm, and k is the heat conduction speed of the heated member and is measured in min/mm; the longest heating time T is T + (5-15) min.
Compared with the prior art, the invention has the beneficial effects that: according to the forging method of the hip joint femoral stem, CoCrMo is used as a raw material, and steps of blanking, dip coating, blank making, spraying, pre-forging, finishing and finish forging are sequentially carried out to obtain a finished product of the hip joint femoral stem, machining is not needed except for the head, machining amount is greatly reduced, machining difficulty and cost are reduced, the obtained hip joint femoral stem is excellent in appearance shape and surface quality, good in mechanical properties such as wear resistance and strength, long in service life and suitable for mass production.
Drawings
Fig. 1 is a schematic structural view of a hip stem according to the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1, the structure diagram of the hip joint femoral stem is shown, the hip joint femoral stem comprises a head part 1, a neck part 3, a shoulder part 2, a stem body 4 and a tail part 5, the axis of the head part 1 and the central line of the stem body 4 form an included angle of 130 degrees to 135 degrees, the head part 1 is cylindrical, the cross section of the rest part is mostly flat and rectangular, the long and short sides of the rectangle are in transition by round corners, and the round corners are R0.2-R10.
The embodiment discloses a forging method of a hip joint femoral stem, which comprises the following steps:
the method comprises the following steps: and (4) selecting a CoCrMo bar stock for blanking. Selecting a CoCrMo bar material with a proper specification according to the size and the maximum section of the hip joint femoral stem. As the CoCrMo has excellent performances of good wear resistance, high strength and the like, the service life of the hip joint femoral stem can be effectively prolonged.
Step two: and dip-coating the blanking piece with paint. Before dip-coating, the surface of the blanking part is cleaned, and the surface is ensured to have no oil stain or pollutant.
The coating adopts a glass protective lubricant, has a proper temperature range of 1000-1180 ℃, and has a protection effect on the surface of the hip joint femoral stem, so that the hip joint femoral stem has excellent appearance shape and surface quality.
The thickness of the coating is 0.04-0.08 mm, preferably 0.06mm, and after coating, the coating is heated at 100-200 ℃ for 60-90 min, preferably at 150 ℃ for 80 min.
Step three: the blanking piece is heated, shaped and cooled to obtain a hip joint femoral stem blank, so that the hip joint femoral stem can be integrally formed, and the later machining amount is reduced.
The blank making mode is upsetting and bending, the heating temperature is 1020-1080 ℃, the preferable temperature is 1050 ℃, the blank is cooled in a room temperature air cooling mode, and graphite is adopted for lubrication in the forming process.
Step four: and (5) carrying out spraying coating treatment on the blank. Before the coating is sprayed, the surface of the blank is cleaned, and the surface is ensured to have no oil stain or pollutant.
The coating adopts a glass protective lubricant, has a proper temperature range of 1000-1180 ℃, and has a protection effect on the surface of the hip joint femoral stem, so that the hip joint femoral stem has excellent appearance shape and surface quality.
The thickness of the coating is 0.04-0.08 mm, preferably 0.06mm, and after coating, the coating is heated at 100-200 ℃ for 60-90 min, preferably at 150 ℃ for 80 min.
Step five: the blank is heated and cooled to obtain the pre-forged piece, so that the mechanical property of the hip joint femoral stem is improved, and the hip joint femoral stem has better wear resistance and strength. The heating temperature is 1110-1170 ℃, preferably 1140 ℃, the cooling is carried out by adopting a room temperature air cooling mode, and graphite is adopted for lubrication in the forming process.
Step six: and finishing the pre-forging. The vibration finishing mode is adopted for processing, and the surface of the pre-forging piece after finishing is smooth and has no defects of pits, pits and the like. The polishing time is 2h to 4h, and preferably 3 h.
Step seven: the preforging piece is heated and cooled to obtain a final forging finished product, so that the mechanical property of the hip joint femoral stem is improved, and the hip joint femoral stem has better wear resistance and strength.
Heating in the inert gas protection atmosphere at 1020-1080 ℃, preferably 1050 ℃, cooling in a room-temperature air cooling mode, and lubricating by using graphite in the forming process.
The surface treatment is carried out on the final forging finished product to obtain the hip joint femoral stem finished product, and the machining is not needed except for the head 1, so that the machining amount is greatly reduced, and the machining difficulty and cost are reduced.
In the third step, the fifth step and the seventh step, the shortest heating time t is H x k + (2-5) min, H is the size of the thickest part of the heated member and is in unit of mm, and k is the heat conduction speed of the heated member and is in unit of min/mm; the longest heating time T is T + (5-15) min. The k value of the CoCrMo material is 1.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A forging method of a hip joint femoral stem is characterized by comprising the following steps:
the method comprises the following steps: selecting a CoCrMo bar stock for blanking;
step two: dip-coating the blanking piece with paint;
step three: heating, shaping and cooling the blanking piece to obtain a hip joint femoral stem blank;
step four: carrying out spraying coating treatment on the blank;
step five: heating and cooling the blank to obtain a pre-forged piece;
step six: finishing the pre-forged piece;
step seven: and heating and cooling the pre-forging to obtain a final forging finished product.
2. The method for forging the hip stem according to claim 1, wherein in the first step: selecting a CoCrMo bar material with a proper specification according to the size and the maximum section of the hip joint femoral stem.
3. The forging method of the hip joint femoral stem according to claim 1, wherein in the second step, the surface of a blanking part is cleaned before dip coating; the coating adopts a glass protective lubricant, the thickness of the coating is 0.04-0.08 mm, and after the coating is coated, the coating is heated for 60-90 min at the temperature of 100-200 ℃.
4. The method for forging the hip stem according to claim 1, wherein the steps in the third step are as follows: the blank making mode is upsetting and bending.
5. The forging method of the hip stem according to claim 4, characterized in that in the third step: the heating temperature is 1020-1080 ℃, the cooling is carried out by adopting a room temperature air cooling mode, and the graphite is adopted for lubrication in the forming process.
6. The method for forging the hip stem according to claim 1, wherein in the fourth step: cleaning the surface of the blank before spraying the coating; the coating adopts a glass protective lubricant, the thickness of the coating is 0.04-0.08 mm, and after the coating is coated, the coating is heated for 60-90 min at the temperature of 100-200 ℃.
7. The forging method of the hip joint femoral stem according to claim 1, wherein in the fifth step, the heating temperature is 1110 ℃ to 1170 ℃, the cooling is performed in a room temperature air cooling mode, and graphite is used for lubrication in the forming process.
8. The hip stem forging method according to claim 1, wherein in step six: and (4) processing by adopting a vibration finishing mode, wherein the finishing time is 2-4 h.
9. The hip stem forging method according to claim 1, wherein in step seven: heating in the inert gas protection atmosphere at 1020-1080 ℃, cooling in a room temperature air cooling mode, and lubricating by using graphite in the forming process.
10. The forging method for the hip stem according to claim 5, 7 or 9, wherein the shortest heating time t ═ H × k + (2-5) min, H is the thickest dimension of the heated member in mm, and k is the heat transfer rate of the heated member in min/mm; the longest heating time T is T + (5-15) min.
CN202010633360.0A 2020-07-02 2020-07-02 Method for forging hip joint femoral stem Pending CN111730015A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6432142B1 (en) * 1999-07-26 2002-08-13 Japan As Represented By Secretary Of Agency Of Industrial Science And Technology Mold for uniform pressing of substrate side faces, and artificial bone of titanium alloy having high biological affinity
FR2824259A1 (en) * 2001-05-04 2002-11-08 Groupe Lepine Femoral implant, for articular hip prosthesis, is forged and does not require machine finishing, mainly around neck, so as to increase mechanical strength of neck in its weakest area
CN2657618Y (en) * 2003-11-24 2004-11-24 吴栋 Artificial hip joint handle
CN104921846A (en) * 2015-07-06 2015-09-23 卢通成 Novel wear-resistant unruptured metal ceramic femoral head and preparation method thereof
CN105030378A (en) * 2015-05-15 2015-11-11 江苏奥康尼医疗科技发展有限公司 Artificial partial hip joint prosthesis made of organic polymer material
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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