CN112743081A - Manufacturing method of cross for acetabular file and cross for acetabular file - Google Patents
Manufacturing method of cross for acetabular file and cross for acetabular file Download PDFInfo
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- CN112743081A CN112743081A CN202011471971.6A CN202011471971A CN112743081A CN 112743081 A CN112743081 A CN 112743081A CN 202011471971 A CN202011471971 A CN 202011471971A CN 112743081 A CN112743081 A CN 112743081A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000005238 degreasing Methods 0.000 claims abstract description 31
- 238000005245 sintering Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims description 24
- 239000002253 acid Substances 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 13
- 238000010306 acid treatment Methods 0.000 claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 239000012778 molding material Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 9
- 210000002414 leg Anatomy 0.000 description 8
- 239000010963 304 stainless steel Substances 0.000 description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 210000000588 acetabulum Anatomy 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010060820 Joint injury Diseases 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000001338 necrotic effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1659—Surgical rasps, files, planes, or scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
- B22F3/1025—Removal of binder or filler not by heating only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B2017/1602—Mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dentistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a method for manufacturing a cross for an acetabular bone file, which is characterized by comprising the following steps of: (1) molding the raw materials by using a mold to obtain a cross; (2) and (4) degreasing the cross, and then sintering to obtain the finished product of the cross for the acetabular file. The method for manufacturing the cross for the acetabular file adopts the die integrated molding sintering process to manufacture the cross for the acetabular file, and the obtained cross has high strength and precision.
Description
Technical Field
The invention particularly relates to a manufacturing method of a cross for an acetabular bone file, and further relates to the cross for the acetabular bone file manufactured by the method.
Background
The hip joint replacement surgery aims at the surgery of hip joint injury, adopts artificial joints to replace damaged or diseased joint surfaces so as to achieve the purposes of relieving joint pain, correcting deformity, recovering and improving the motion function of the joints. In hip surgery, an acetabular file is one of the indispensable tools, and the acetabular file is used for processing an acetabular fossa and removing necrotic tissue so as to install an artificial acetabulum. The acetabular file mainly comprises a hemispherical knife shell. The bottom of the hemispherical cutter shell of the acetabular file is connected with a cross, and the cross is used for connecting the hemispherical cutter shell with a connecting rod. The existing cross for the acetabular file is manufactured in a machining or welding mode, and the manufactured cross is easy to deform, has the problems of flatness, accuracy and poor strength, and therefore influences the overall use effect of the acetabular file.
Disclosure of Invention
The invention aims to provide a manufacturing method of a cross for an acetabular file, which solves the technical problems of poor strength and accuracy of the existing cross for the acetabular file.
The first purpose of the invention is realized by the following technical scheme:
a manufacturing method of a cross for an acetabular file comprises the following steps:
(1) molding the raw materials by using a mold to obtain a cross;
(2) and (4) degreasing the cross, and then sintering to obtain the finished product of the cross for the acetabular file.
The raw materials in the invention are 304 stainless steel materials.
In the invention, the molding pressure is 100-120MPa, the temperature of the injected melt is 180-200 ℃, and the material temperature of the mold material is 108-135 ℃.
Further, the molding pressure is 110MPa, the temperature of the injected melt is 190 ℃, and the material temperature of the mold material is 120 ℃.
The invention can be improved by adopting acid treatment or high-temperature degreasing. When degreasing is performed after sintering, organic substances in the molded body are decomposed and reduced to generate carbon, hydrocarbons, carbon monoxide, zinc vapor, and the like in the absence of oxygen during sintering, and these substances are harmful to products, heating elements, and furnace materials, and particularly fatal failures occur when the molded body touches heating elements of molybdenum and tungsten, and therefore degreasing is performed before sintering.
Further, the acid treatment degreasing temperature is 100-.
Further, the acid treatment adopts flowing acid treatment, and the acid inlet flow is 2-3m3The acid feeding time is 280-350 min.
Preferably, the acid is nitric acid with a concentration of 98% or more. Concentrated nitric acid is adopted for degreasing, and passivation protection is achieved on the surface of the raw material while degreasing is achieved.
Further, the high-temperature degreasing temperature is 500-.
Furthermore, the degreasing rate is controlled to be more than or equal to 95 percent. The degreasing is to remove additives such as stearic acid, zinc stearate, lithium stearate, paraffin wax, resin and the like during powder press forming, when the additives enter a high-temperature furnace during sintering, the additives are decomposed and reduced to generate carbon, hydrocarbon, carbon monoxide and the like due to the absence of oxygen, and the gas gasified at high temperature causes defects such as cracking of parts, so that the additives need to be removed before sintering, the higher the degreasing rate is, the better the degreasing rate is, and the degreasing rate is not lower than 95% after a large amount of practices.
In the invention, the sintering temperature is 1050-.
The invention can be further improved by further comprising a shaping treatment after sintering, wherein the shaping treatment is to treat the part in a surface cold extrusion mode. The dimensional accuracy of the part is improved through the shaping treatment.
Further, the pressure maintaining pressure in the shaping process is 60-90MPa, and the pressure maintaining time is 20-35 min.
The invention can also be improved as follows, the shaping treatment also comprises a magnetic polishing (magnetic polishing) step, the rotating speed of the magnetic polishing is 400-600r/min, the magnetic polishing time is 4-6min, and the magnetic polishing frequency is 45-60 Hz.
Further, the magnetic polishing medium is a 1 x 8mm steel needle.
The second purpose of the invention is realized by the following technical scheme:
a cross for an acetabular file is manufactured by the manufacturing method.
Further, the top of the cross frame is arranged in a horizontal plane. The cross frame is used for being connected the in-process with the connecting rod, and upper and lower face and side all contact with the connecting rod, and cross top horizontal plane sets up, can improve the plane degree of acetabular bone file, and is connected more firmly with the connecting rod simultaneously.
Furthermore, the joints of the end surfaces of the four legs of the cross and the top plane are arranged in a reverse right angle mode.
Furthermore, the joint of two adjacent legs at the center of the cross is set by a concave arc fillet, a chamfer angle or a convex arc fillet.
Compared with the prior art, the invention has the following beneficial effects:
(1) the method for manufacturing the cross for the acetabular file adopts the die integrated molding sintering process to manufacture the cross for the acetabular file, and the obtained cross has high strength and precision.
(2) In the method, the acetabulum file cross is treated by adopting the degreasing treatment before sintering and the shaping treatment after sintering, and the obtained acetabulum file cross has high flatness and precision. And the flatness and the precision of the cross are further improved by adopting magnetic polishing treatment.
Drawings
FIG. 1 is an overall configuration view of a cross for an acetabular file prepared in example 1 of the present invention;
FIG. 2 is a front view of a cross for an acetabular file prepared in example 1 of the present invention;
FIG. 3 is a rear view of a cross for an acetabular file prepared in example 1 of the present invention;
FIG. 4 is a left side view of a cross for an acetabular file prepared in example 1 of the present invention;
FIG. 5 is an overall configuration view of a cross for an acetabular file prepared in example 2 of the present invention;
FIG. 6 is a front view of a cross for an acetabular file prepared in example 2 of the present invention;
FIG. 7 is a rear view of a cross for acetabular files prepared in example 2 of the present invention;
FIG. 8 is a left side view of a cross for an acetabular file prepared in example 2 of the present invention;
FIG. 9 is an overall configuration view of a cross for an acetabular file prepared in example 3 of the present invention;
FIG. 10 is a front view of a cross for acetabular files prepared in example 3 of the present invention;
FIG. 11 is a rear view of a cross for acetabular files prepared in example 3 of the present invention;
FIG. 12 is a left side view of a cross for acetabular files prepared in example 3 of the present invention.
Detailed Description
The present invention is further described below in conjunction with specific examples to better understand and implement the technical solutions of the present invention for those skilled in the art.
Example 1
A manufacturing method of a cross for an acetabular file comprises the following steps:
(1) molding the raw material 304 stainless steel by using a mold, wherein the molding pressure is 120MPa, the temperature of a melt injected by a nozzle is 195 ℃, and the temperature of a mold material is 125 ℃, so as to obtain the cross shown in the figure 1-4, wherein the top of the cross is arranged in a horizontal plane, the connecting parts of the end surfaces of four legs and the plane of the top are arranged in a right-angled manner, and the connecting parts of two adjacent legs in the center of the cross are arranged in a concave arc-shaped and rounded manner;
(2) the cross is treated by using 98 percent nitric acid as flowing acid for degreasing treatment, and the acid inlet flow is 2.5m3H, acid feeding time is 300min, degreasing temperature is 120 ℃, and degreasing rate is 99.3%; then sintering is carried out, the sintering temperature is 1350 ℃, and the heat preservation time is 200 min; shaping after sintering, wherein the pressure maintaining pressure in the shaping process is 80MPa, and the pressure maintaining time is 30 min; and performing magnetic polishing after the reshaping treatment, wherein a medium adopted by the magnetic polishing is a 1 x 8mm steel needle (the diameter is 1mm, the length is 8mm), the rotating speed of the magnetic polishing is 450r/min, the magnetic polishing time is 6min, and the magnetic polishing frequency is 50Hz, so that the finished product of the cross for the acetabular file is obtained.
Example 2
A manufacturing method of a cross for an acetabular file comprises the following steps:
(1) molding the raw material 304 stainless steel by using a mold, wherein the molding pressure is 110MPa, the temperature of a melt injected by a nozzle is 190 ℃, and the temperature of a mold material is 115 ℃ to obtain the cross shown in the figure 5-8, wherein the top of the cross is arranged in a horizontal plane, the connecting parts of the end surfaces of four legs and the plane of the top are arranged in a right-angled manner, and the connecting parts of two adjacent legs in the center of the cross are arranged in a straight chamfer manner;
(2) the cross is treated by using 98 percent nitric acid as flowing acid for degreasing treatment, and the acid inlet flow is 3m3H, acid feeding time is 280min, degreasing temperature is 135 ℃, and degreasing rate is 99.5%; then sintering is carried out, the sintering temperature is 1250 ℃, and the heat preservation time is 200 min; shaping after sintering, wherein the pressure maintaining pressure in the shaping process is 80MPa, and the pressure maintaining time is 30 min; and performing magnetic polishing after the reshaping treatment, wherein a medium adopted by the magnetic polishing is a 1 x 8mm steel needle, the rotating speed of the magnetic polishing is 600r/min, the magnetic polishing time is 4min, and the magnetic polishing frequency is 60Hz, so that the finished product of the cross for the acetabular file is obtained.
Example 3
A manufacturing method of a cross for an acetabular file comprises the following steps:
(1) molding the raw material 304 stainless steel by using a mold, wherein the molding pressure is 105MPa, the temperature of a melt injected by a nozzle is 200 ℃, and the temperature of a mold material is 135 ℃, so as to obtain the cross shown in figures 9-12, wherein the top of the cross is arranged in a horizontal plane, the connecting parts of the end surfaces of four legs and the plane of the top are arranged in a reversed right angle mode, and the connecting parts of two adjacent legs in the center of the cross are arranged in a convex arc reversed angle mode;
(2) the cross is treated by using 98 percent nitric acid as flowing acid for degreasing treatment, and the acid inlet flow is 2m3H, acid feeding time is 350min, degreasing temperature is 145 ℃, and degreasing rate is 99.7%; then sintering is carried out, the sintering temperature is 1150 ℃, and the heat preservation time is 200 min; shaping after sintering, wherein the pressure maintaining pressure in the shaping process is 80MPa, and the pressure maintaining time is 30 min; and performing magnetic polishing after the reshaping treatment, wherein a medium adopted by the magnetic polishing is a 1 x 8mm steel needle, the rotating speed of the magnetic polishing is 400r/min, the magnetic polishing time is 6min, and the magnetic polishing frequency is 55Hz, so that the finished product of the cross for the acetabular file is obtained.
Example 4
The difference between the embodiment and the embodiment 1 is that high temperature degreasing is adopted, the degreasing temperature is 550 ℃, the heat preservation time is 50min, and the degreasing rate is 99.5%.
Performance testing
The flatness of the top surface of the cross for the acetabular file prepared in example 1, the symmetry degree of a single rod body to the rod axis and the perpendicularity of the two rod body axes are detected, and specific data are shown in the following table 1.
TABLE 1 Cross accuracy and flatness conditions for acetabular files
The above embodiments illustrate various embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto, and those skilled in the art can achieve the objectives of the present invention based on the disclosure of the present invention, and any modifications and variations based on the concept of the present invention fall within the scope of the present invention, which is defined by the claims.
Claims (10)
1. A manufacturing method of a cross for an acetabular file is characterized by comprising the following steps:
(1) molding the raw materials by using a mold to obtain a cross;
(2) and (4) degreasing the cross, and then sintering to obtain the finished product of the cross for the acetabular file.
2. The method for manufacturing a cross for an acetabular file as claimed in claim 1, wherein the molding pressure is 100-120MPa, the temperature of the injected melt is 180-200 ℃, and the temperature of the molding material is 108-135 ℃.
3. The method of manufacturing a cross for acetabular files according to claim 2, wherein the degreasing is performed by acid treatment or high temperature degreasing.
4. The method for manufacturing a cross for an acetabular file as claimed in claim 3, wherein the degreasing temperature of the acid treatment is 100-150 ℃, the acid treatment is carried out by using nitric acid with a concentration of 98% or more as the flowing acid, and the flow rate of the flowing acid is 2-3m3The acid feeding time is 280-350 min.
5. The method for manufacturing the cross for the acetabular file as claimed in claim 4, wherein the sintering temperature is 1050-.
6. The method of claim 4, wherein the step of sintering further comprises a reshaping step, wherein the reshaping step is performed by cold surface pressing the component.
7. The method of manufacturing a cross for acetabular files according to claim 6, wherein the pressure holding pressure during the shaping process is 60 to 90MPa and the pressure holding time is 20 to 35 min.
8. The method for manufacturing a cross for an acetabular file according to claim 1, wherein the method further comprises a magnetic polishing step after the plastic processing, wherein the magnetic polishing rotation speed is 400-.
9. A cross for acetabular files, produced by the method of any one of claims 1 to 8.
10. The cross for acetabular files of claim 9, wherein the top of the cross is disposed in a horizontal plane; the joint of two adjacent legs at the center of the cross is set by a concave arc fillet, a chamfer angle or a convex arc fillet.
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| CN202011471971.6A CN112743081B (en) | 2020-12-14 | 2020-12-14 | Manufacturing method of cross for acetabular file and cross for acetabular file |
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| CN104550973A (en) * | 2013-10-11 | 2015-04-29 | 浙江一火科技有限公司 | Method for preparing artificial acetabulum cup |
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| CN107812933A (en) * | 2017-09-21 | 2018-03-20 | 东莞华晶粉末冶金有限公司 | 304 powder of stainless steel are injection moulded feeding and preparation method and product |
| CN109848420A (en) * | 2019-04-02 | 2019-06-07 | 湖南英捷高科技有限责任公司 | A kind of 440C stainless steel metal powder injection forming method and its product |
| CN110202153A (en) * | 2019-06-20 | 2019-09-06 | 上海富驰高科技股份有限公司 | A kind of MIM preparation for processing of special-shaped product |
| CN111647826A (en) * | 2020-06-15 | 2020-09-11 | 江苏精研科技股份有限公司 | Method for preparing antibacterial stainless steel by adopting powder injection molding process |
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Denomination of invention: A manufacturing method for a cross for acetabular files and a cross for acetabular files Granted publication date: 20230117 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGZHOU TIANYING PRECISION TOOL CO.,LTD. Registration number: Y2024980001172 |
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