CN106567002A - Medical osteotome for mandible plastic surgery and preparation method thereof - Google Patents
Medical osteotome for mandible plastic surgery and preparation method thereof Download PDFInfo
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- CN106567002A CN106567002A CN201611003930.8A CN201611003930A CN106567002A CN 106567002 A CN106567002 A CN 106567002A CN 201611003930 A CN201611003930 A CN 201611003930A CN 106567002 A CN106567002 A CN 106567002A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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Abstract
The invention discloses a medical osteotome for mandible plastic surgery and a preparation method thereof. The medical osteotome comprises the following material components: 0.20% to 0.55% of C, 12% to 20% of Cr, 0.2% to 0.8% of Si, 0.5% to 1.5% of Mn, 0.3% to 1.0% of Ni, 0.5% to 1.5% of Mo, 0.2% to 0.5% of N, Fe and a small amount of impurity elements. The preparation method comprises the steps of heating a roughly machined osteotome blank to 1000 DEG C to 1050 DEG C for austenitizing; then, carrying out cryogenic treatment on the osteotome at the temperature of minus 60 DEG C to minus 130 DEG C; then, carrying out tempering on the osteotome at the temperature of 150 DEG C to 200 DEG C two times, wherein tempering is carried out for not less than 2 hours each time; then, air cooling the osteotome to the room temperature; and carrying out finish machining treatment on the osteotome blank to obtain a final finished product. The osteotome is applicable to mandible plastic surgery and has relatively high hardness and toughness, the edge of the osteotome is not liable to curl during the surgery, the service life of the osteotome is greatly prolonged, and safety and reliability of the surgery are guaranteed.
Description
Technical field
The present invention relates to a kind of stainless steel material and its application, more particularly to a kind of martensite stainless steel material and its should
With, a kind of preparation method of surgical medical equipment is further related to, it is applied to shaping medical material and medical apparatus and instruments technology of preparing
Field.
Background technology
Inent M Andibular Angle is because lower face is roomy caused by angle of mandible excessively processus aboralis or institute of turning up, also known as " square jaw is abnormal
Shape ", in east based on bone hypertrophy, affects appearance.With the continuous improvement that people were required quality of life, mandibular bone shaping
Operation has become one of modal cosmetic surgery.According to incompletely statistics, the annual face contour cosmetic surgery implemented in the whole nation has 6
It is to 70,000 and in rising trend.
Face contour cosmetic surgery belongs to four operations that class difficulty is higher, risk is larger in medical cosmetic surgery, therefore
Related malpractice and dispute day by day increases.Mandibular bone hardness highest in skull, osteotome need to have high rigidity and high intensity,
Could ensure that operation is smoothed out, and obtain preferable rounding profile.Meanwhile, to avoid tipping, it is ensured that the safety of operation and
Reliability, osteotome is needed with excellent toughness.Used as the shaping medical apparatus and instruments with direct body contact, mandibular bone osteotome will also
Preferable corrosion resistance and wearability are asked.
At present, the most popular material of mandibular bone shaping osteotome be conventional martensitic rustless steel 4Cr13, using quenching,
Tempering heat treatment process carries out Strengthening and Toughening so as to high intensity and high tenacity.The lath for being organized as high tenacity after heat treatment
Martensitic matrix, is distributed with the carbide of high rigidity on matrix, osteotome hardness reaches 46～53HRC.
4Cr13 martensitic stain less steels osteotome can typically carry out 2～3 plastic operations.The most common failure of shaping osteotome
Mode shows as osteotome cutting edge position and crimps, as shown in figure 1, having influence on the planarization of otch.Traditional mandibular bone shaping bone
The knife edge of a knife easily turned, service life is not high.
The content of the invention
In order to solve prior art problem, it is an object of the invention to overcome the shortcomings of that prior art is present, there is provided a kind of
The preparation method of martensite containing nitrogen stainless steel material and its application and medical shaping osteotome, medical shaping osteotome of the invention can not only
The hardness that operation is required is reached, and good toughness can be kept while hardness is properly increased, the reduction edge of a knife is turned, increased
Osteotome service life, improves operation safety and reliability.
Purpose is created to reach foregoing invention, the present invention adopts following inventive concepts：
In order to make up traditional mandibular bone shaping osteotome edge of a knife easily not high deficiency of turned, service life, present invention employs
The Design of Chemical Composition scheme of new martensite containing nitrogen stainless steel material, and new heat treatment group technology is employed, invention wound
Produce that hardness is higher, the more excellent martensite containing nitrogen rustless steel of tough sex expression is applied to novel nitrogen-containing martensitic stain less steel
Medical instruments field.The processing technology of mandibular bone shaping osteotome of the present invention includes：Osteotome roughing, quenching strengthening, subzero treatment,
Temper stressing and osteotome polish, finally give finished product osteotome.
Conceived according to foregoing invention, the present invention adopts following technical proposals：
A kind of medical osteotome for Plastic Surgery of Mandible, is made, nitrogenous horse using martensite containing nitrogen stainless steel material
Family name's body stainless steel material main chemical compositions are according to mass percent：C:0.20～0.55%；Cr:12～20%；Si:0.2
～0.8%；Mn:0.5～1.5%；Ni:0.3～1.0%；Mo:0.5～1.5%；N:0.2～0.5%；Remaining is for Fe and on a small quantity
Inevitable impurity element.
Used as currently preferred technical scheme, martensite containing nitrogen stainless steel material main chemical compositions are according to quality percentage
Than for：C:0.40～0.55%；Cr:12～20%；Si:0.2～0.8%；Mn:0.5～1.5%；Ni:0.3～1.0%；Mo:
0.5～1.5%；N:0.2～0.5%；Remaining is Fe and a small amount of inevitably impurity element.
Used as the further preferred technical scheme of such scheme, the microstructure of martensite containing nitrogen stainless steel material is horse
The carbide of family name's body matrix+Dispersed precipitate, nitride+retained austenite, the wherein percentage by volume of retained austenite be 5～
25%.
The present invention adopts martensite containing nitrogen stainless steel material, is processed into the medical osteotome of Plastic Surgery of Mandible.It is preferred that adopting
With the martensite containing nitrogen stainless-steel sheet that thickness is 2～5mm, the medical osteotome of Plastic Surgery of Mandible is processed into.
A kind of preparation method of medical shaping osteotome, comprises the steps：
A. using martensite containing nitrogen stainless steel material as rapidoprint, the primary chemical of martensite containing nitrogen stainless steel material
Composition is according to mass percent：C:0.20～0.55%；Cr:12～20%；Si:0.2～0.8%；Mn:0.5～1.5%；
Ni:0.3～1.0%；Mo:0.5～1.5%；N:0.2～0.5%；Remaining is Fe and a small amount of inevitably impurity element；
B. by cutting, grinding, cleaning manufacturing procedure by the martensite containing nitrogen stainless steel material adopted in step a
It is processed into setting model and with being sized the medical shaping osteotome blank of specification, and leaves the allowance of setting；
C. the osteotome blank prepared in step b is heated to into insulation between 1000-1050 DEG C to enter for 30～60 minutes
Row austenitation heat treatment, after austenitation heat treatment, then is quickly cooled to room temperature, completes the preliminary heat treatment of osteotome blank
Process；When preliminary heat treatment is carried out to osteotome blank, it is preferred to use the cooling means of high pressure cooling medium gas is preferred
Quenching Treatment is carried out to osteotome blank using mineral oil process for quenching, the fast quickly cooling of osteotome blank after austenitation heat treatment is made
But to room temperature；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -130 DEG C～-60 DEG C carries out deep cooling
Process 50～120 minutes, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, the second step for completing osteotome blank is heat treated
Journey；It is preferred that carrying out subzero treatment 60～120 minutes to osteotome blank；
E. the osteotome blank in step d after second step heat treatment is tempered twice, often at 150～200 DEG C
Secondary tempering time is no less than 2 hours, after tempering process terminates, osteotome blank is air cooled to into room temperature, completes osteotome blank
Main heat treatment process；When tempering process Technology for Heating Processing is carried out to osteotome blank, after each osteotome blank tempering terminates, all
It is preferred that carrying out air cooling of coming out of the stove；
F. machining process, the bone of the main heat treatment process to completing osteotome blank in step e are adopted
Knife blank carries out surface grinding process to final finished osteotome size, that is, obtain medical shaping osteotome.Osteotome system of the present invention
Make New type scalper that there is high rigidity and high-strength tenacity as technique, be not susceptible in operation turned, greatly improve osteotome and use the longevity
Life, ensures the safety and reliability of operation.
As the preferred technical scheme of the preparation method of medical shaping osteotome of the invention, in step a, using thickness
The martensite containing nitrogen stainless steel material steel plate for 2～5mm is spent as rapidoprint, be processed in step b.
The present invention is increased first from novel nitrogen-containing martensitic stain less steel as mandibular bone shaping osteotome material before tempering
Add subzero treatment, have developed the optimum treatment process scheme that the new material is applied to shaping osteotome.At original heat
Science and engineering skill is compared, and subzero treatment helps lend some impetus to transformation of the retained austenite to martensite, refines tempered structure, promotes carbide
With the Dispersed precipitate of carbide, the structure property of osteotome is improved so as to while with high strong hardness, remain to keep good
Toughness.The present invention adopts novel martensitic stainless steel material, and subzero treatment is increased in cutter Technology for Heating Processing, promotes remaining difficult to understand
The transformation of family name's body and carbon, the disperse educt of nitrogen compound, thinning microstructure formulates the optimal heat treatment for being adapted to mandibular bone shaping osteotome
Technique, the toughness needed for keeping it while shaping osteotome hardness is improved so as to turned, having osteotome is difficult in operation
Effect access times increase 7-8 times, greatly improve operation safety and reliability.
The present invention compared with prior art, with following substantive distinguishing features and remarkable advantage is obviously projected：
1. existing to use 4Cr13 conventional martensitic rustless steels with osteotome, its main chemical compositions scope is：C%:
0.3-0.5%, Cr:12-14%, Si, Mn:0.45-0.55%, remaining is Fe and a small amount of other impurities element, its microstructure
For the proeutectoid carbide of martensitic matrix+a small amount of eutectic carbide+Dispersed precipitate；And the present invention uses new material, using new
The stainless main chemical compositions of type martensite containing nitrogen are：C:0.20-0.55%, Cr:12～20%, Si:0.2-0.8%, Mn:
0.5-1.5%, Ni:0.3-1.0%, Mo:0.5-1.5%, N:0.2-0.5%, remaining is Fe and a small amount of inevitably impurity
Element, its microstructure is the carbide of martensitic matrix+Dispersed precipitate, nitride+percentage by volume be 5～25% it is appropriate
Retained austenite, controls retained austenite, improves materials microstructure pattern, improves the performance of osteotome so as to height
While strong hardness, remain to keep good toughness；
2. the phosphorus content of conventional martensitic rustless steel 4Cr13 is about 0.4%, but because it contains undissolved carbide, therefore
Actual phosphorus content≤0.4%, its hardness is 46～53HRC；The present invention adopts novel nitrogen-containing martensitic stain less steel, with higher
Hardness, due to the presence of nitrogen, its carbon equivalent even can reach 0.55% to the novel nitrogen-containing martensitic stain less steel that the present invention is used, and make
It has high rigidity, simultaneously as deep cooling separates out carbide and nitride diffusion so as to which hardness is further improved, and be can reach
55～62HRC；
3. conventional martensitic rustless steel 4Cr13 matrixes are lath martensite, and martensite phosphorus content is low, and containing bulk eutectic
Carbide, therefore the dispersion of its toughness is larger；Martensite containing nitrogen rustless steel of the present invention has higher toughness, and the present invention is made
Novel nitrogen-containing martensitic stain less steel is distributed due to its carbide and nitride diffusion, it is to avoid being concentrated due to precipitate is caused
Toughness decline, while it remains appropriate retained austenite after deep cooling so as to good toughness；
4. the processing mode that existing osteotome is used is：Roughing → quenching → tempering → polish, makes Fracture of Material table
Existing limit；The present invention adopts special process, and its processing mode is：Roughing → quenching → deep cooling → tempering → double tempering → essence
Processing, due to increased subzero treatment on the basis of original processing mode, promote retained austenite to the transformation of martensite and
The disperse educt of carbon, nitride, further improves the obdurability of osteotome；
5. the material of traditional mandibular bone shaping osteotome mostly is martensitic stain less steel 4Cr13, and Technology for Heating Processing is to quench+return
Fire, its tempered structure is martensite+a small amount of eutectic carbide+Dispersed precipitate proeutectoid carbide, with certain obdurability, but osteotome
Hardness is still not big enough compared to mandibular bone, turned, the planarization of impact procedure and otch often occurs；And the present invention is from new
Type martensite containing nitrogen rustless steel, and when being applied to osteotome, rational Technology for Heating Processing is formulated, retained austenite is controlled, change
Kind materials microstructure pattern, improves the performance of osteotome.
Description of the drawings
Fig. 1 is the turned pattern of the edge of a knife of traditional 4Cr13 martensitic stain less steel osteotomes.
Fig. 2 is the preparation flow figure of the medical shaping osteotome of one～example IV of the embodiment of the present invention.
Fig. 3 is the outline drawing of the medical shaping osteotome that the cutter head of the embodiment of the present invention one is straight flat sword.
Fig. 4 is conventional martensitic rustless steel 4Cr13 aobvious with the embodiment of the present invention one～example IV martensitic stain less steel
Micro-assembly robot schematic diagram.
Fig. 5 is hardness of the conventional cosmetic osteotome with the shaping osteotome of one～example IV of the embodiment of the present invention and Toughness comparison
Figure.
Fig. 6 is the outline drawing of the medical shaping osteotome that the cutter head of the embodiment of the present invention four is curved flat sword.
Specific embodiment
Details are as follows for the preferred embodiments of the present invention：
Embodiment one：
In the present embodiment, referring to Fig. 2～5, a kind of preparation method of medical shaping osteotome comprises the steps：
A. adopt thickness for 5mm martensite containing nitrogen stainless steel material steel plate as rapidoprint, martensite containing nitrogen
The main chemical compositions of stainless steel material are according to mass percent：C:0.20%；Cr:12%；Si:0.2%；Mn:0.5%；
Ni:0.3%；Mo:0.5%；N:0.2%；Remaining is Fe and a small amount of inevitably impurity element；
B. by wire cutting, grinding, the manufacturing procedure cleaned by the martensite containing nitrogen stainless steel adopted in step a
Material is processed into setting model and with the medical shaping osteotome blank for being sized specification, and cutter head is straight flat sword, and leaves setting
Allowance；
C. the osteotome blank prepared in step b is heated to into 1010 DEG C of insulations is carried out at austenitizing heat for 40 minutes
Reason, after austenitation heat treatment, then carries out Quenching Treatment using mineral oil process for quenching to osteotome blank, makes through austenite
Change osteotome blank after heat treatment and be quickly cooled to room temperature, complete the preliminary heat treatment process of osteotome blank；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -80 DEG C carries out 50 points of subzero treatment
Clock, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, and completes the second step heat treatment process of osteotome blank；
E. encourage the osteotome blank in step d after second step heat treatment to be tempered at 150 DEG C twice, each returns
Fiery time 2 h, after the tempering of first time osteotome blank terminates, carries out air cooling of coming out of the stove, after whole double tempering techniques terminate, will
Osteotome blank is air cooled to room temperature, that is, complete the main heat treatment process of osteotome blank；
F. machining process, the bone of the main heat treatment process to completing osteotome blank in step e are adopted
Knife blank carries out surface grinding process, carries out surface grinding, polishing, final processing is completed, until being machined to final finished
Osteotome size, that is, obtain medical shaping osteotome, and osteotome finished product profile is as shown in Figure 3.
Experiments of Machanics test analysis：
The mechanical property that medical shaping osteotome is prepared to the present embodiment is tested, Jing experimental tests, prepared by the present embodiment
Medical shaping osteotome hardness is 56HRC, and toughness is 44J/cm2.The present embodiment osteotome is tried out in Plastic Surgery of Mandible
Test, performance on probation is splendid, and effective access times improve more than 7 times, and service life is increased significantly, improves the planarization of otch
And operation safety.
Referring to Fig. 2 and Fig. 4, the present embodiment adopts martensite containing nitrogen rustless steel as mandibular bone shaping osteotome material, and
Subzero treatment is increased before tempering, the optimum treatment process scheme that the new material is applied to shaping osteotome is have developed.With
Traditional osteotome elder generation Technology for Heating Processing is compared, and the present embodiment helps lend some impetus to retained austenite turning to martensite using subzero treatment
Become, refine tempered structure, promote the Dispersed precipitate of carbide and carbide, improve the structure property of osteotome so as to height
While strong hardness, remain to keep good toughness.
Embodiment two：
The present embodiment is essentially identical with embodiment one, is particular in that：
In the present embodiment, a kind of preparation method of medical shaping osteotome, comprises the steps：
A. adopt thickness for 5mm martensite containing nitrogen stainless steel material steel plate as rapidoprint, martensite containing nitrogen
The main chemical compositions of stainless steel material are according to mass percent：C:0.40%；Cr:12%；Si:0.2%；Mn:0.5%；
Ni:0.3%；Mo:0.5%；N:0.2%；Remaining is Fe and a small amount of inevitably impurity element；
B. by wire cutting, grinding, the manufacturing procedure cleaned by the martensite containing nitrogen stainless steel adopted in step a
Material is processed into setting model and with the medical shaping osteotome blank for being sized specification, and cutter head is straight flat sword, and leaves setting
Allowance；
C. the osteotome blank prepared in step b is heated to into 1000 DEG C of insulations is carried out at austenitizing heat for 60 minutes
Reason, after austenitation heat treatment, then carries out Quenching Treatment using mineral oil process for quenching to osteotome blank, makes through austenite
Change osteotome blank after heat treatment and be quickly cooled to room temperature, complete the preliminary heat treatment process of osteotome blank；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -130 DEG C carries out 50 points of subzero treatment
Clock, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, and completes the second step heat treatment process of osteotome blank；
E. encourage the osteotome blank in step d after second step heat treatment to be tempered at 150 DEG C twice, each returns
Fiery time 2 h, after the tempering of first time osteotome blank terminates, carries out air cooling of coming out of the stove, after whole double tempering techniques terminate, will
Osteotome blank is air cooled to room temperature, that is, complete the main heat treatment process of osteotome blank；
F. machining process, the bone of the main heat treatment process to completing osteotome blank in step e are adopted
Knife blank carries out surface grinding process, carries out surface grinding, polishing, final processing is completed, until being machined to final finished
Osteotome size, that is, obtain medical shaping osteotome.
Experiments of Machanics test analysis：
The mechanical property that medical shaping osteotome is prepared to the present embodiment is tested, Jing experimental tests, prepared by the present embodiment
Medical shaping osteotome hardness is 58HRC, and toughness is 41J/cm2.The present embodiment osteotome is tried out in Plastic Surgery of Mandible
Test, performance on probation is splendid, and effective access times improve more than 7 times, and service life is increased significantly, improves the planarization of otch
And operation safety.
Embodiment three：
The present embodiment is essentially identical with above-described embodiment, is particular in that：
In the present embodiment, a kind of preparation method of medical shaping osteotome, comprises the steps：
A. adopt thickness for 5mm martensite containing nitrogen stainless steel material steel plate as rapidoprint, martensite containing nitrogen
The main chemical compositions of stainless steel material are according to mass percent：C:0.55%；Cr:20%；Si:0.8%；Mn:1.5%；
Ni:1.0%；Mo:1.5%；N:0.5%；Remaining is Fe and a small amount of inevitably impurity element；
B. by wire cutting, grinding, the manufacturing procedure cleaned by the martensite containing nitrogen stainless steel adopted in step a
Material is processed into setting model and with the medical shaping osteotome blank for being sized specification, and cutter head is straight flat sword, and leaves setting
Allowance；
C. the osteotome blank prepared in step b is heated to into 1050 DEG C of insulations is carried out at austenitizing heat for 30 minutes
Reason, after austenitation heat treatment, then carries out Quenching Treatment using mineral oil process for quenching to osteotome blank, makes through austenite
Change osteotome blank after heat treatment and be quickly cooled to room temperature, complete the preliminary heat treatment process of osteotome blank；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -60 DEG C carries out 120 points of subzero treatment
Clock, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, and completes the second step heat treatment process of osteotome blank；
E. encourage the osteotome blank in step d after second step heat treatment to be tempered at 200 DEG C twice, each returns
Fiery time 2 h, after the tempering of first time osteotome blank terminates, carries out air cooling of coming out of the stove, after whole double tempering techniques terminate, will
Osteotome blank is air cooled to room temperature, that is, complete the main heat treatment process of osteotome blank；
F. machining process, the bone of the main heat treatment process to completing osteotome blank in step e are adopted
Knife blank carries out surface grinding process, carries out surface grinding, polishing, final processing is completed, until being machined to final finished
Osteotome size, that is, obtain medical shaping osteotome.
Experiments of Machanics test analysis：
The mechanical property that medical shaping osteotome is prepared to the present embodiment is tested, Jing experimental tests, prepared by the present embodiment
Medical shaping osteotome hardness is 60HRC, and toughness is 40J/cm2.The present embodiment osteotome is tried out in Plastic Surgery of Mandible
Test, performance on probation is splendid, and effective access times improve more than 7 times, and service life is increased significantly, improves the planarization of otch
And operation safety.
Example IV：
The present embodiment is essentially identical with above-described embodiment, is particular in that：
In the present embodiment, referring to Fig. 6, a kind of preparation method of medical shaping osteotome comprises the steps：
A. adopt thickness for 5mm martensite containing nitrogen stainless steel material steel plate as rapidoprint, martensite containing nitrogen
The main chemical compositions of stainless steel material are according to mass percent：C:0.20%；Cr:12%；Si:0.2%；Mn:0.5%；
Ni:0.3%；Mo:0.5%；N:0.2%；Remaining is Fe and a small amount of inevitably impurity element；
B. by wire cutting, grinding, the manufacturing procedure cleaned by the martensite containing nitrogen stainless steel adopted in step a
Material is processed into setting model and with the medical shaping osteotome blank for being sized specification, and cutter head is curved flat sword, and leaves setting
Allowance；
C. the osteotome blank prepared in step b is heated to into 1040 DEG C of insulations is carried out at austenitizing heat for 60 minutes
Reason, after austenitation heat treatment, then carries out Quenching Treatment using mineral oil process for quenching to osteotome blank, makes through austenite
Change osteotome blank after heat treatment and be quickly cooled to room temperature, complete the preliminary heat treatment process of osteotome blank；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -80 DEG C carries out 90 points of subzero treatment
Clock, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, and completes the second step heat treatment process of osteotome blank；
E. encourage the osteotome blank in step d after second step heat treatment to be tempered at 170 DEG C twice, each returns
Fiery time 2 h, after the tempering of first time osteotome blank terminates, carries out air cooling of coming out of the stove, after whole double tempering techniques terminate, will
Osteotome blank is air cooled to room temperature, that is, complete the main heat treatment process of osteotome blank；
F. machining process, the bone of the main heat treatment process to completing osteotome blank in step e are adopted
Knife blank carries out surface grinding process, carries out surface grinding, polishing, final processing is completed, until being machined to final finished
Osteotome size, that is, obtain medical shaping osteotome, and osteotome finished product profile is as shown in Figure 6.
Experiments of Machanics test analysis：
The mechanical property that medical shaping osteotome is prepared to the present embodiment is tested, Jing experimental tests, prepared by the present embodiment
Medical shaping osteotome hardness is 57HRC, and toughness is 40J/cm2.The present embodiment osteotome is tried out in Plastic Surgery of Mandible
Test, performance on probation is splendid, and effective access times improve more than 7 times, and service life is increased significantly, improves the planarization of otch
And operation safety.
Summary embodiment, referring to Fig. 2, in preliminary heat treatment process is carried out, by osteotome blank in heat-treatment furnace
Being heated to a certain temperature between 1000-1050 DEG C carries out austenitizing, and the insulation under austenitizing temperature makes steel in 30～60 minutes
In carbide and most of the nitrogen compound dissolve in austenite.Then room temperature is quickly cooled to using mineral oil, obtain martensite+
Percentage by volume is 10～30% austenite mixeds tissue, and hardness reaches 40-52HRC.
Referring to Fig. 2, after preliminary heat treatment process is completed, then shaping osteotome after quenching is put in deep cooling box be cooled to-
A certain temperature between 130 DEG C～-60 DEG C, deep cooling 50～120 minutes, deep cooling process makes the martensite in osteotome tissue due to lattice
Shrink and the carbonitride of a large amount of tiny and Dispersed precipitate the Ya Wending of precipitation, while and because partial austenitic is in deep cooling mistake
It is changed into martensite in journey so that the osteotome hardness after deep cooling is significantly improved to 55～62HRC.After deep cooling terminates, osteotome is taken out
It is statically placed in be returned in air and warms to room temperature.
Referring to Fig. 2, after subzero treatment process, then osteotome is loaded into tempering furnace, a certain temperature between 150～200 DEG C
Twice, each tempering time is not less than 2 hours for tempering, and each osteotome tempering terminates, air cooling of coming out of the stove.In drawing process, in osteotome
There is temper softening and cause osteotome hardness to decline in the martensite in portion's tissue, while due to carbon inside martensite in drawing process
The continuation of nitride is separated out and causes the raising of osteotome hardness, therefore the hardness after osteotome tempering is maintained between 55～62HRC.
The carbonitride for being organized as retained austenite+Dispersed precipitate that martensite+percentage by volume is 5～25% of last osteotome.
Fig. 4 is the microscopic structure schematic diagram of traditional osteotome and above-described embodiment osteotome material.Wherein Fig. 4 (1) is traditional horse
Family name's body rustless steel, is distributed with bulk carbide on its matrix.Wherein Fig. 4 (2) is above-described embodiment through the new of subzero treatment
The stainless microscopic structure schematic diagram of martensite containing nitrogen, compared with wherein Fig. 4 (1), above-described embodiment is promoted using subzero treatment
Retained austenite promotes carbide and nitride diffusion to separate out to martensite transfor mation, so that osteotome hardness increases, while it contains
There is appropriate retained austenite, improve osteotome toughness.
Fig. 5 is that above-described embodiment mandibular bone shaping osteotome compares with the hardness and toughness properties of traditional osteotome, traditional osteotome
Hardness and toughness preferably, but the dispersion of toughness is larger；And the hardness of New type scalper has on the basis of traditional osteotome
One step is improved, and up to 55～62HRC, and the dispersion of toughness is relatively low.Above-described embodiment adopts novel martensitic stainless steel material,
Increase subzero treatment in cutter Technology for Heating Processing, promote transformation and carbon, the disperse educt of nitrogen compound of retained austenite, carefully
Change tissue, formulate the optimum treatment process for being adapted to mandibular bone shaping osteotome, while shaping osteotome hardness is improved it is kept
Effective access times of osteotome are increased 7-8 times by required toughness so as to be difficult in operation turned, are greatly improved operation and are pacified
Full property and reliability.
The selection of the medical shaping osteotome of the above embodiment of the present invention, manufacture method are applied to the whole of the roomy place's excision of mandibular bone
Shape osteotome, with higher hardness and obdurability, is not susceptible to turned in operation, greatly improves osteotome service life, ensures
The safety and reliability of operation.
The embodiment of the present invention is illustrated above in conjunction with accompanying drawing, but the invention is not restricted to above-described embodiment, can be with
The purpose of innovation and creation of the invention makes various changes, under all spirit and principle according to technical solution of the present invention
Change, modification, replacement, the combination or simplified made, should be equivalent substitute mode, as long as meeting the goal of the invention of the present invention,
It is used for know-why and the inventive concept of the medical osteotome of Plastic Surgery of Mandible and preparation method thereof without departing from the present invention,
Belong to protection scope of the present invention.
Claims (8)
1. a kind of medical osteotome for Plastic Surgery of Mandible, it is characterised in that using martensite containing nitrogen stainless steel material system
Into martensite containing nitrogen stainless steel material main chemical compositions are according to mass percent：C:0.20～0.55%；Cr:12～
20%；Si:0.2～0.8%；Mn:0.5～1.5%；Ni:0.3～1.0%；Mo:0.5～1.5%；N:0.2～0.5%；Its
It is remaining for Fe and a small amount of inevitably impurity element.
2. the medical osteotome of Plastic Surgery of Mandible is used for according to claim 1, it is characterised in that：Martensite containing nitrogen is stainless
Steel material main chemical compositions are according to mass percent：C:0.40～0.55%；Cr:12～20%；Si:0.2～0.8%；
Mn:0.5～1.5%；Ni:0.3～1.0%；Mo:0.5～1.5%；N:0.2～0.5%；Remaining is Fe inevitable with a small amount of
Impurity element.
3. the medical osteotome for Plastic Surgery of Mandible according to claim 1 or claim 2, it is characterised in that：Martensite containing nitrogen
The microstructure of stainless steel material is carbide, the nitride+retained austenite of martensitic matrix+Dispersed precipitate, wherein remaining
The percentage by volume of austenite is 5～25%.
4. a kind of preparation method of medical shaping osteotome, it is characterised in that comprise the steps：
A. using martensite containing nitrogen stainless steel material as rapidoprint, the main chemical compositions of martensite containing nitrogen stainless steel material
It is according to mass percent：C:0.20～0.55%；Cr:12～20%；Si:0.2～0.8%；Mn:0.5～1.5%；Ni:
0.3～1.0%；Mo:0.5～1.5%；N:0.2～0.5%；Remaining is Fe and a small amount of inevitably impurity element；
B. the martensite containing nitrogen stainless steel material adopted in step a is processed by the manufacturing procedure of cutting, grinding, cleaning
The medical shaping osteotome blank of specification is sized into setting model and having, and leaves the allowance of setting；
C. the osteotome blank prepared in step b is heated to into insulation between 1000-1050 DEG C carries out Austria in 30～60 minutes
Family name's body heat treatment, after austenitation heat treatment, then is quickly cooled to room temperature, completes the preliminary heat treated of osteotome blank
Journey；
D. the osteotome blank in step c after preliminary heat treatment is placed in into -130 DEG C～-60 DEG C carries out subzero treatment
50～120 minutes, after deep cooling terminates, osteotome blank is returned and is warmed to room temperature, complete the second step heat treatment process of osteotome blank；
E. encourage the osteotome blank in step d after second step heat treatment to be tempered at 150～200 DEG C twice, it is each
Tempering time is no less than 2 hours, after tempering process terminates, osteotome blank is air cooled to into room temperature, completes the main of osteotome blank
Heat treatment process；
F. machining process, the osteotome hair of the main heat treatment process to completing osteotome blank in step e are adopted
Base carries out surface grinding process to final finished osteotome size, that is, obtain medical shaping osteotome.
5. the preparation method of medical shaping osteotome according to claim 4, it is characterised in that：In step a, using thickness
The martensite containing nitrogen stainless steel material steel plate for 2～5mm is spent as rapidoprint, be processed in step b.
6. the preparation method of medical shaping osteotome according to claim 4, it is characterised in that：To osteotome in step c
When blank carries out preliminary heat treatment, using the cooling means or mineral oil process for quenching of high pressure cooling medium gas to osteotome hair
Base carries out Quenching Treatment, makes the osteotome blank after austenitation heat treatment be quickly cooled to room temperature.
7. the preparation method of medical shaping osteotome according to claim 4, it is characterised in that：To osteotome in step e
When blank carries out tempering process Technology for Heating Processing, after each osteotome blank tempering terminates, air cooling of coming out of the stove all is carried out.
8. according to any one in claim 4～7 medical shaping osteotome manufacture method, it is characterised in that：Described
Subzero treatment is carried out 60～120 minutes to osteotome blank in step d.
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| CN110257759A (en) * | 2019-06-02 | 2019-09-20 | 邢晓英 | A kind of stainless steel processing method that biocompatibility is excellent |
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