CN113319528A - Medical bone fracture plate forging optimization process - Google Patents
Medical bone fracture plate forging optimization process Download PDFInfo
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- CN113319528A CN113319528A CN202110585135.9A CN202110585135A CN113319528A CN 113319528 A CN113319528 A CN 113319528A CN 202110585135 A CN202110585135 A CN 202110585135A CN 113319528 A CN113319528 A CN 113319528A
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- 208000010392 Bone Fractures Diseases 0.000 title claims abstract description 134
- 238000005242 forging Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005457 optimization Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 27
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000009966 trimming Methods 0.000 claims description 20
- 210000000988 bone and bone Anatomy 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 15
- 238000004381 surface treatment Methods 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 7
- 238000000137 annealing Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 210000001519 tissue Anatomy 0.000 claims description 7
- 239000002918 waste heat Substances 0.000 claims description 7
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 150000007529 inorganic bases Chemical class 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 abstract 2
- 238000011049 filling Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
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- 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
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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
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- 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
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a forging optimization process based on a medical bone fracture plate, which comprises the following steps: the method comprises the steps of designing a final forging die of the bone fracture plate, firstly carrying out fracture treatment on a bone fracture plate model, then carrying out pre-deformation treatment on the bone fracture plate model after the fracture treatment, including carrying out pre-bending treatment on a cavity and a model of the bone fracture plate mould, then adjusting a gap between a bridge part of the mould, then carrying out locking device design, finally carrying out mould processing and bone fracture plate blank preparation, firstly selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then carrying out blanking, then spraying surface anti-oxidation coating, and finally carrying out heating and drying. The invention uses the precision forging technology to obtain the product with high dimensional precision and excellent mechanical property, solves the problems of low material utilization rate, anisotropic mechanical property of the bone fracture plate, unstable size of the bone fracture plate, large deformation, overlong production period and the like, improves the product quality and increases the product competitiveness.
Description
Technical Field
The invention relates to the technical field of bone plate forging, in particular to a medical bone plate forging-based optimization process.
Background
At present, a medical bone fracture plate is generally manufactured by adopting a machining plate, and the specific process comprises the following steps: obtaining a bone fracture plate blank by cutting and the like, and obtaining a bone fracture plate product meeting the requirements through CNC milling and surface treatment. However, the method has the problems of low material utilization rate, long CNC processing time consumption, high processing equipment requirement, high processing cost, anisotropic bone fracture plate mechanical property and the like, in recent years, people try to obtain the bone fracture plate by forging, but the medical bone fracture plate has the characteristics of large variety, complex shape, high size requirement and the like, and the existing bone fracture plate forging process has the problems of unstable bone fracture plate size, large deformation, overlong production period and the like.
Therefore, it is necessary to develop an optimized process based on the forging of the medical bone plate to solve the above problems.
Disclosure of Invention
The invention aims to provide a medical bone plate forging-based optimization process, which aims to overcome the defects of unstable size, large deformation, overlong production cycle and the like of a bone plate in the conventional bone plate forging process in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a forging optimization process based on a medical bone fracture plate comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming method comprises the steps of firstly, utilizing forging waste heat to perform mechanical trimming, controlling the allowance of flash to be less than 0.1mm, then removing flash and burr, performing heat treatment in a vacuum furnace, controlling the annealing temperature to be 620 and 680 ℃, preserving heat for 1 hour, and cooling along with the furnace;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
Preferably, the gap between the bridge parts of the die in the step one is 1mm-1.2mm, and the bone fracture plate die cavity and the model are pre-bent for 2-5 degrees.
Preferably, the main components of the anti-oxidation coating in the second step comprise inorganic base materials of sodium silicate, glass body and boride.
Preferably, the heating of the blank in the third step is heating in a converter, the heating temperature is controlled to be 920-960 ℃, and the heat preservation time is 10 minutes.
Preferably, the falling speed of the upper die in the forging and pressing forming in the third step is more than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600-ton screw press is used in the precision forging process.
Preferably, the amount of the pre-forging deformation and the amount of the finish forging deformation in the third step are 50% and 20%, respectively.
In the technical scheme, the invention provides the following technical effects and advantages:
the invention uses the precision forging technology to obtain the product with high dimensional precision and excellent mechanical property, solves the problems of low material utilization rate, anisotropic mechanical property of the bone fracture plate, unstable size of the bone fracture plate, large deformation, overlong production period and the like, improves the product quality and increases the product competitiveness.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a forging process flow of the present invention;
fig. 2 is a schematic structural view of the bone plate of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The invention provides a forging optimization process based on a medical bone fracture plate, which is shown in the figures 1-2 and comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming method comprises the steps of firstly, utilizing forging waste heat to perform mechanical trimming, controlling the allowance of flash to be less than 0.1mm, then removing flash and burr, performing heat treatment in a vacuum furnace, controlling the annealing temperature to be 620 and 680 ℃, preserving heat for 1 hour, and cooling along with the furnace;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
Furthermore, in the technical scheme, the gap between the bridge part of the die in the step I is 1mm-1.2mm, and the die cavity and the die of the bone fracture plate are pre-bent for 2-5 degrees, so that an ideal profile can be obtained after forging, the excessive material can be smoothly extruded, and the problem of insufficient filling can be avoided.
Further, in the above technical scheme, the main components of the anti-oxidation coating in the second step include inorganic base material sodium silicate, glass body and boride.
Further, in the above technical scheme, the heating of the blank in the third step is heating in a converter, the heating temperature is controlled to be 920-.
Further, in the technical scheme, the falling speed of the upper die in the forging and pressing forming in the third step is greater than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600ton screw press is used in the precision forging process, so that the die can be fully filled with the product without defects and through flow change.
Further, in the above technical means, the pre-forging deformation amount in the third step is 50%, and the finish forging deformation amount is 20%.
Example 1:
the invention provides a forging optimization process based on a medical bone fracture plate, which comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming is characterized in that mechanical trimming is firstly carried out by utilizing forging waste heat, the allowance of flash is controlled to be less than 0.1mm, then the flash and burr are removed, heat treatment is carried out, the heat treatment is carried out in a vacuum furnace, the annealing temperature is controlled to be 650 ℃, the heat preservation is carried out for 1 hour, and furnace cooling is carried out;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
Furthermore, in the technical scheme, the gap between the bridge part of the die in the step I is 1mm, and the cavity and the die of the bone plate die are pre-bent by 3 degrees, so that an ideal profile can be obtained after forging, the excessive material can be smoothly extruded, and the problem of insufficient filling is avoided.
Further, in the above technical scheme, the main components of the anti-oxidation coating in the second step include inorganic base material sodium silicate, glass body and boride.
Further, in the above technical scheme, the heating of the blank in the third step is heating in a converter, the heating temperature is controlled to 940, and the heat preservation time is 10 minutes.
Further, in the technical scheme, the falling speed of the upper die in the forging and pressing forming in the third step is greater than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600ton screw press is used in the precision forging process, so that the die can be fully filled with the product without defects and through flow change.
Further, in the above technical means, the pre-forging deformation amount in the third step is 50%, and the finish forging deformation amount is 20%.
The forged medical bone fracture plate in the embodiment can realize that most of redundant materials can be smoothly extruded, but still a lot of redundant materials are not extruded, and the phenomenon of underfilling does not occur.
Example 2:
the invention provides a forging optimization process based on a medical bone fracture plate, which comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming is characterized in that mechanical trimming is firstly carried out by utilizing forging waste heat, the allowance of flash is controlled to be less than 0.1mm, then the flash and burr are removed, heat treatment is carried out, the heat treatment is carried out in a vacuum furnace, the annealing temperature is controlled to be 650 ℃, the heat preservation is carried out for 1 hour, and furnace cooling is carried out;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
Furthermore, in the technical scheme, the gap between the bridge part of the die in the step I is 1.1mm, and the cavity and the model of the bone plate die are pre-bent by 3 degrees, so that an ideal profile can be obtained after forging, the excessive material can be smoothly extruded, and the problem of incomplete filling is avoided.
Further, in the above technical scheme, the main components of the anti-oxidation coating in the second step include inorganic base material sodium silicate, glass body and boride.
Further, in the above technical scheme, the heating of the blank in the third step is heating in a converter, the heating temperature is controlled to 940, and the heat preservation time is 10 minutes.
Further, in the technical scheme, the falling speed of the upper die in the forging and pressing forming in the third step is greater than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600ton screw press is used in the precision forging process, so that the die can be fully filled with the product without defects and through flow change.
Further, in the above technical means, the pre-forging deformation amount in the third step is 50%, and the finish forging deformation amount is 20%.
The forged medical bone fracture plate in the embodiment can realize that all redundant materials can be smoothly extruded, and the phenomenon of unsatisfactory filling is avoided.
Example 3:
the invention provides a forging optimization process based on a medical bone fracture plate, which comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming is characterized in that mechanical trimming is firstly carried out by utilizing forging waste heat, the allowance of flash is controlled to be less than 0.1mm, then the flash and burr are removed, heat treatment is carried out, the heat treatment is carried out in a vacuum furnace, the annealing temperature is controlled to be 650 ℃, the heat preservation is carried out for 1 hour, and furnace cooling is carried out;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
Furthermore, in the technical scheme, the gap between the bridge part of the die in the step I is 1.2mm, and the cavity and the model of the bone plate die are pre-bent by 3 degrees, so that an ideal profile can be obtained after forging, the excessive material can be smoothly extruded, and the problem of incomplete filling is avoided.
Further, in the above technical scheme, the main components of the anti-oxidation coating in the second step include inorganic base material sodium silicate, glass body and boride.
Further, in the above technical scheme, the heating of the blank in the third step is heating in a converter, the heating temperature is controlled to 940, and the heat preservation time is 10 minutes.
Further, in the technical scheme, the falling speed of the upper die in the forging and pressing forming in the third step is greater than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600ton screw press is used in the precision forging process, so that the die can be fully filled with the product without defects and through flow change.
Further, in the above technical means, the pre-forging deformation amount in the third step is 50%, and the finish forging deformation amount is 20%.
The forged medical bone fracture plate in the embodiment can realize that redundant materials can be completely and smoothly extruded, but the phenomenon of unsatisfactory filling can occur.
Therefore, the gap of the bridge part of the die is set to be 1.1mm, so that the problem that redundant materials can be extruded smoothly can be solved, and meanwhile, the phenomenon of incomplete filling can be avoided.
This practical theory of operation:
referring to the attached drawings 1-2 of the specification, firstly, fracture surface treatment is carried out on a bone fracture plate model, then, pre-deformation treatment is carried out on the bone fracture plate model after fracture surface treatment, including pre-bending treatment on a bone fracture plate mould cavity and a model, then, adjustment is carried out on a gap of a bridge part of the mould, then, locking device design is carried out, finally, mould processing is carried out, then, proper material specification is selected, pure titanium, titanium alloy and high-temperature alloy are selected as materials, blanking is carried out, then, surface anti-oxidation coating is sprayed, finally, heating and drying are carried out, then, bone fracture plate blank preparation is carried out, then, heat treatment is carried out on the bone fracture plate blank, forging and forming are carried out through the mould after heating, forging and pressing comprise pre-forging and final forging, finally, mechanical trimming is carried out, then, mechanical trimming is carried out by utilizing forging waste heat, the allowance is controlled to be less than 0.1mm, then, flash burrs are removed, and (3) carrying out heat treatment in a vacuum furnace, controlling the annealing temperature to be 620-680 ℃, keeping the temperature for 1 hour, cooling along with the furnace, and finally detecting the bone fracture plate product, wherein firstly, flaw detection, tissue analysis and mechanical property test are carried out, then, the final detection is carried out according to the bone fracture plate finished product drawing, and the bone fracture plate profile degree is measured by using a fitting degree detection tool.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (6)
1. A forging optimization process based on a medical bone fracture plate is characterized in that:
the method comprises the following steps: designing a final forging die of the bone fracture plate, namely firstly performing fracture surface treatment on a bone fracture plate model, then performing pre-deformation treatment on the bone fracture plate model after fracture surface treatment, including performing pre-bending treatment on a bone fracture plate die cavity and a model, then adjusting a gap of a bridge part of the die, then designing a locking device, and finally processing through the die;
step two: preparing a blank of the bone fracture plate, namely selecting a proper material specification, selecting pure titanium, titanium alloy and high-temperature alloy, then blanking, spraying surface anti-oxidation coating, and finally heating and drying;
step three: the bone fracture plate precision forging method comprises the steps of firstly preparing a bone fracture plate blank, then heating the bone fracture plate blank, forging and forming the heated bone fracture plate blank by a die, wherein the forging and forming comprises pre-forging and final forging, and finally, mechanical trimming is carried out;
step four: the bone fracture plate trimming method comprises the steps of firstly, utilizing forging waste heat to perform mechanical trimming, controlling the allowance of flash to be less than 0.1mm, then removing flash and burr, performing heat treatment in a vacuum furnace, controlling the annealing temperature to be 620 and 680 ℃, preserving heat for 1 hour, and cooling along with the furnace;
step five: and (3) detecting the bone fracture plate product, namely firstly carrying out flaw detection, tissue analysis and mechanical property test, then carrying out final detection according to the drawing of the finished bone fracture plate product, and measuring the profile tolerance of the bone fracture plate by using a fitting degree gauge.
2. The medical bone plate forging-based optimization process of claim 1, wherein: in the first step, the gap between the bridge parts of the die is 1mm-1.2mm, and the die cavity and the model of the bone fracture plate are pre-bent for 2-5 degrees.
3. The medical bone plate forging-based optimization process of claim 1, wherein: the main components of the anti-oxidation coating in the second step comprise inorganic base material sodium silicate, a glass body and boride.
4. The medical bone plate forging-based optimization process of claim 1, wherein: and the blank heating in the third step is heating in a converter, the heating temperature is controlled to be 920-960 ℃, and the heat preservation time is 10 minutes.
5. The medical bone plate forging-based optimization process of claim 1, wherein: and step three, the falling speed of the upper die in the forging and pressing forming is more than 300m/s, the heating temperature of the die is 200 ℃, the temperature difference between the upper die and the lower die is kept at 20 ℃, and a 1600-ton screw press is used in the precision forging process.
6. The medical bone plate forging-based optimization process of claim 1, wherein: the pre-forging deformation in the third step is 50%, and the final forging deformation is 20%.
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2021
- 2021-05-27 CN CN202110585135.9A patent/CN113319528A/en active Pending
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| US20160271680A1 (en) * | 2015-03-20 | 2016-09-22 | Alex Global Technology, Inc. | Method for manufacturing bicycle front fork having wheel clamping base |
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Application publication date: 20210831 |