CN111304427B - Processing technology of martensitic stainless steel medical instrument parts - Google Patents
Processing technology of martensitic stainless steel medical instrument parts Download PDFInfo
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- CN111304427B CN111304427B CN202010119335.0A CN202010119335A CN111304427B CN 111304427 B CN111304427 B CN 111304427B CN 202010119335 A CN202010119335 A CN 202010119335A CN 111304427 B CN111304427 B CN 111304427B
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- 229910001105 martensitic stainless steel Inorganic materials 0.000 title claims abstract description 22
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000011282 treatment Methods 0.000 claims abstract description 67
- 238000000137 annealing Methods 0.000 claims abstract description 28
- 238000005097 cold rolling Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 claims description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 13
- 230000007797 corrosion Effects 0.000 claims description 12
- 238000005260 corrosion Methods 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 238000005224 laser annealing Methods 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 206010028980 Neoplasm Diseases 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 201000010099 disease Diseases 0.000 claims description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000010583 slow cooling Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 10
- 238000005498 polishing Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/06—Etching of iron or steel
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention discloses a processing technology of martensitic stainless steel medical instrument parts, which comprises the steps of carrying out cold rolling treatment on martensitic stainless steel disk circles for 9 times to manufacture the medical instrument parts, and carrying out annealing treatment on the martensitic stainless steel disk circles for 5 times in the 9-time cold rolling treatment process, wherein the rolling deformation rate of each cold rolling treatment is less than or equal to 60 percent compared with that of the previous cold rolling treatment; the annealing temperature is 800-900 ℃. The invention is used for processing the medical apparatus parts in the medical industry, changes the prior process of adopting linear cutting and then CNC surface polishing, greatly reduces the processing working hours, improves the production efficiency and reduces the production cost by half.
Description
Technical Field
The invention relates to a processing technology of a martensitic stainless steel medical instrument part.
Background
At present, in the medical industry, some parts (such as a cutting anastomat under an endoscope and a nail box base of a disposable nail box) related to medical instruments are made of stainless steel materials, such as martensitic stainless steel or austenitic stainless steel, the existing machining mode is wire cutting, the material waste is serious, the cost is high, CNC surface polishing is needed after the wire cutting, the machining work time is long, and the production efficiency is low during batch production.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a machining process of a martensitic stainless steel medical instrument part, which is used for machining the medical instrument part in the medical industry, changes the prior process of performing CNC surface polishing after linear cutting, greatly reduces the machining working hours, improves the production efficiency and reduces the production cost by half.
In order to achieve the purpose, the technical scheme of the invention is to design a processing technology of martensitic stainless steel medical instrument parts, which comprises the steps of carrying out cold rolling treatment on martensitic stainless steel wires for 9 times to manufacture the medical instrument parts, and carrying out annealing treatment on the martensitic stainless steel wires between cold rolling, wherein the rolling deformation rate of each cold rolling treatment is less than or equal to 60 percent compared with that of the previous cold rolling treatment; the annealing temperature is 800-900 ℃; after each annealing, the annealing is cooled to below 500 ℃ by adopting a slow cooling mode, and the cooling medium is air. The last process is four driven rollers at present, and is substantially an extrusion process; annealing the martensitic stainless steel wire for 5 times in the process of 9 times of cold rolling treatment; since the annealing treatment is performed in 9 cold rolling treatments, several cold rolling treatments are combined, and a heat treatment step is not performed after each cold rolling. Due to the material (2Cr13 stainless steel), the deformation rate between adjacent passes cannot be more than 60 percent, otherwise, the cracking is caused. The manufactured medical apparatus and instrument parts are in an I-steel shape with the back surface being a cambered surface, and are mainly used for a cutting anastomat under a cavity mirror and a nail box base of a disposable nail box.
The further technical scheme is that the speed of the stainless steel wire passing through a rolling area is V1, the speed of the stainless steel wire passing through a heat treatment area is V2, a tube furnace is adopted in the heat treatment process, and the furnace length of the tube furnace is 8-10 m; v1 is more than 0m/min and less than 20m/min, V2 is more than 1m/min and less than 6 m/min.
The further technical proposal is that the diameter of the wire is 12 plus or minus 0.3 mm; the wire rod is made of 2Cr13 stainless steel.
The further technical proposal is that the annealing temperature is 850 ℃.
The further technical scheme is that the curved surface of the roller used for rolling in the cold rolling treatment is provided with an annular bulge and/or an annular recess, the annular bulge and the annular recess are concentrically arranged with the corresponding roller, and the annular bulge and the annular recess are in shape-matching with the cross section of the wire rod after each rolling. The cross section of the manufactured medical apparatus and instrument part in the direction vertical to the length direction is in an I-shaped steel shape with two arc-shaped top edges, if the two arc-shaped top edges of the manufactured medical apparatus and instrument part are vertically arranged, the width dimension of the cross section of the manufactured medical apparatus and instrument part in the direction vertical to the length direction is 10.88 +/-0.1 mm, and the height dimension of the cross section of the manufactured medical apparatus and instrument part is 4 +/-0.1 mm.
The further technical scheme is that the surface of the manufactured medical appliance part is subjected to electrolytic treatment after the last cold rolling treatment, the medical appliance part is cleaned after electrolysis and dried after cleaning, the medical appliance part which is cleaned and dried through electrolysis is soaked in liquid medicine for treating diseases of a patient for 10 hours and then dried in air, a nano robot which enters a human body and reaches a focus to eliminate tumors is arranged in corroded micropores on the surface of the medical appliance part after drying in air, and then a protective film is coated on the surface of the medical appliance part. The surface is corroded into a honeycomb shape, the honeycomb shape is soaked in the liquid medicine for 10 hours, then the liquid medicine for treating the diseases of the patient is dried in the air (in this way, the liquid medicine is remained in the micropores), then a film is coated on the surface of the part, and the film is heated or treated by using alcohol before use, so that the liquid medicine can play a role after being contacted with a human body when being used as a cutter (the endoscope knife for the surgical anastomat is specially shaped); the nanometer robot is arranged in the micropore, and the robot enters the human body to reach the focus (control the walking route) to eliminate the tumor.
The further technical scheme is that a laser annealing furnace is adopted in the heat treatment process, the laser pulse frequency is 500Hz, and the laser energy density is 300-500 mJ/cm2The laser annealing time is 10-30 ns, and the output power of the laser annealing furnace is 10W. The laser annealing furnace for processing the wafer is adopted, the occupied space is saved, and a tube furnace with the length of 8-10 meters is not used any more, so that the production line is shortened, the annealing effect is better, and the annealing efficiency is higher.
The further technical scheme is that microwave vibration treatment is adopted when surface electrolysis treatment is carried out on the medical apparatus and instrument parts and between rolling treatment and annealing treatment, the vibration frequency is 400MHz-10GHz, the microwave vibration treatment time is 15-120 s, and the power of a microwave oscillator is 3000-8000W. Therefore, the surface electrolytic treatment, the rolling treatment and the annealing treatment can be more effective, the working hours of the surface electrolytic treatment, the rolling treatment and the annealing treatment can be saved, and the work efficiency can be improved.
The further technical scheme is that a plurality of laser heads are arranged in the laser annealing furnace, and the arrangement shape of all the laser heads is matched with the section shape of the part to be annealed. This saves the number of laser heads and reduces the handling of unnecessary areas, making annealing more targeted.
Adhering a polytetrafluoroethylene plastic film to the surface of the part before surface electrolysis treatment, and arranging a plurality of through holes for ensuring the surface corrosion position to be accurate on the plastic film; the surface electrolysis treatment adopts mixed acid solution corrosion treatment, the treatment time is 1 s-15 s, and the mixed acid solution consists of 80% phosphoric acid, 10% water, 5% nitric acid and 5% acetic acid or consists of 50% phosphoric acid, 15% water, 5% hydrofluoric acid and 30% acetic acid; the surface electrolytic treatment process is as follows: adding phosphoric acid, nitric acid and acetic acid into water at 20-25 deg.C, stirring to dissolve completely, and making into electrolyte; putting the prepared electrolyte and the stainless steel part into an electrolytic cell, electrifying, adjusting electrolysis parameters, and carrying out surface electrolysis treatment on the surface of the stainless steel material; then taking out the stainless steel part from the electrolytic bath, washing the surface with clear water, then washing with absolute ethyl alcohol, and drying with a blower to obtain a processed finished product; wherein the electrolysis parameters are as follows: the current density is 0.1-2A/cm 2, the inter-polar distance is 0.15-0.3 m, the temperature of the electrolyte is 20-40 ℃, and the electrolytic reaction rate is 50 mu m/min. The laser drilling on the plastic film is carried out in advance, so that the surface corrosion is ensured to be a regular operation procedure, the position of the surface corrosion is more accurate, and the corrosion depth can be controlled by controlling the corrosion time. The scheme aims at parts in medical instruments, particularly blades, such as the blade part of the endoscopic cutting anastomat, but the blade of the endoscopic cutting anastomat processed by the process needs a subsequent sharpening process. The scheme can be used for medical equipment parts which are contacted with or implanted into human body wounds, and can also be used for medical equipment parts which are not contacted with the human body, such as a nail box base of a disposable nail box.
The invention has the advantages and beneficial effects that: the method is used for processing medical instrument parts in the medical industry, changes the prior process of CNC surface polishing after linear cutting, rearranges lattice tissues, reduces the defects of inner holes such as pores and the like, and changes the hardness and strength of products; the service life can be prolonged due to the ordered arrangement of the crystal lattices, the processing working hours are greatly reduced, the production efficiency is improved, a linear cutting mode is not used, the waste of raw materials is avoided, and the production cost is reduced by half. The laser annealing furnace for processing the wafer is adopted, the occupied space is saved, and a tube furnace with the length of 8-10 meters is not used any more, so that the production line is shortened, the annealing effect is better, and the annealing efficiency is higher. The microwave vibration treatment makes the surface electrolysis treatment, rolling treatment and annealing treatment more effective, saves the working hours of the surface electrolysis treatment, rolling treatment and annealing treatment and improves the working efficiency. The number of laser heads is saved, and the treatment of unnecessary areas is reduced, so that the annealing is more targeted. The laser drilling on the plastic film is carried out in advance, so that the surface corrosion is ensured to be a regular operation procedure, the position of the surface corrosion is more accurate, and the corrosion depth can be controlled by controlling the corrosion time.
Drawings
FIG. 1 is a schematic processing process diagram of a first processing embodiment of the martensitic stainless steel medical instrument part according to the invention;
FIG. 2 is a schematic view of a roll of the last cold rolling pass of FIG. 1;
FIG. 3 is an exploded view of the upper and lower rolls of FIG. 2;
FIG. 4 is a schematic illustration of the martensitic stainless steel medical device part machined in FIG. 2.
In the figure: 1. coiling; 2. rolling; 3. an annular projection; 4. a top edge; 5. a tube furnace; 6. a medical device part.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 to 4, the invention is a processing technology of martensitic stainless steel medical instrument parts, which comprises the steps of performing cold rolling treatment on martensitic stainless steel coils 1 (namely wire rods) for 9 times to manufacture medical instrument parts 6, and performing annealing treatment on the martensitic stainless steel coils 1 for 5 times in the 9-time cold rolling treatment process, wherein the rolling deformation rate of each cold rolling treatment is less than or equal to 60% compared with that of the previous cold rolling treatment; the annealing temperature is 800-900 ℃. The speed of the stainless steel disc 1 passing through the rolling area is V1, the speed of the stainless steel disc passing through the heat treatment area is V2, a tube furnace 5 is adopted in the heat treatment process, and the furnace length of the tube furnace 5 is 8-10 m; v1 is more than 0m/min and less than 20m/min, V2 is more than 1m/min and less than 6 m/min. The diameter of the disc circle 1 is 12 mm plus or minus 0.3 mm; the material of the disk 1 is 2Cr13 stainless steel. The annealing temperature was 850 ℃. The curved surface of the roller 2 used in the cold rolling treatment is provided with an annular bulge 3, the annular bulge 3 is concentrically arranged with the corresponding roller 2, and the section shape of the annular bulge 3 is matched with that of the disc 1 after each rolling. The cross section of the manufactured medical apparatus part in the direction vertical to the length direction of the medical apparatus part is in an I-shaped steel shape with two arc-shaped top edges 4.
Example two:
the difference from the first embodiment is that the surface of the manufactured medical apparatus and instrument part is subjected to electrolytic treatment after the last cold rolling treatment, the medical apparatus and instrument part is cleaned after electrolysis and dried after cleaning, the medical apparatus and instrument part which is cleaned and dried through electrolysis is soaked in a liquid medicine for treating diseases of a patient for 10 hours and then dried in the air, and a water-proof protective film is coated on the surface of the medical apparatus and instrument part after drying in the air. A nano robot which is used for entering a human body to reach a focus to eliminate tumors is arranged in the corroded micropores on the surface of the medical appliance part.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The processing technology of the martensitic stainless steel medical instrument part is characterized by comprising the steps of carrying out cold rolling treatment on a martensitic stainless steel wire rod for 9 times to manufacture the medical instrument part, and carrying out annealing treatment on the martensitic stainless steel wire rod between cold rolling, wherein the rolling deformation rate of each cold rolling treatment is less than or equal to 60% compared with that of the previous cold rolling treatment; the annealing temperature is 800-900 ℃; after annealing each time, cooling to below 500 ℃ by adopting a slow cooling mode, wherein the cooling medium is air, the annealing temperature is 850 ℃, the surface electrolysis treatment is carried out on the prepared medical apparatus and instrument part after the last cold rolling treatment, the medical apparatus and instrument part is cleaned after electrolysis and dried in the air, the medical apparatus and instrument part after the electrolysis cleaning and the drying in the air is soaked in the liquid medicine for treating the diseases of the patient for 10h, a nano robot which enters into the human body and reaches the focus to eliminate the tumor is arranged in the corroded micropore on the surface of the medical apparatus and instrument part after the air drying, then a protective film is coated on the surface of the medical apparatus and instrument part, the microwave vibration treatment is adopted during the surface electrolysis treatment of the medical apparatus and instrument part and between the rolling treatment and the annealing treatment, the vibration frequency is 400MHz-10GHz, the microwave vibration treatment time is 15-120 s, the power of a microwave oscillator is 3000-8000W, a polytetrafluoroethylene plastic film is adhered on the surface of the part before the surface electrolysis treatment, the plastic film is provided with a plurality of through holes for ensuring the surface corrosion position to be accurate; the surface electrolysis treatment adopts mixed acid solution corrosion treatment, the treatment time is 1 s-15 s, and the mixed acid solution is composed of 80% phosphoric acid, 10% water, 5% nitric acid and 5% acetic acid; the surface electrolytic treatment process is as follows: adding phosphoric acid, nitric acid and acetic acid into water at 20-25 deg.C, stirring to dissolve completely, and making into electrolyte; putting the prepared electrolyte and the stainless steel part into an electrolytic cell, electrifying, adjusting electrolysis parameters, and carrying out surface electrolysis treatment on the surface of the stainless steel material; then taking out the stainless steel part from the electrolytic bath, washing the surface with clear water, then washing with absolute ethyl alcohol, and drying with a blower to obtain a processed finished product; wherein the electrolysis parameters are as follows: the current density is 0.1-2A/cm 2, the inter-polar distance is 0.15-0.3 m, the electrolyte temperature is 20-40 ℃, the electrolytic reaction rate is 50 mu m/min, a laser annealing furnace is adopted in the heat treatment process, the laser pulse frequency is 500Hz, the laser energy density is 300-500 mJ/cm2, the laser annealing time is 10-30 ns, and the output power of the laser annealing furnace is 10W.
2. The process of claim 1, wherein the wire diameter is 12 ± 0.3 mm; the wire rod is made of 2Cr13 stainless steel.
3. The processing technology of martensitic stainless steel medical equipment parts as claimed in claim 2, wherein the curved surface of the roller used for rolling in the cold rolling treatment is provided with annular bulges and/or annular depressions, the annular bulges and the annular depressions are concentrically arranged with the corresponding roller, and the annular bulges and the annular depressions are matched with the cross-sectional shapes of the wires after each rolling.
4. The processing technology of martensitic stainless steel medical instrument parts as claimed in claim 3, wherein a plurality of laser heads are arranged in the laser annealing furnace, and the arrangement shape of all the laser heads is matched with the cross-sectional shape of the parts to be annealed.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310778A (en) * | 2007-05-23 | 2008-11-26 | 乐普（北京）医疗器械股份有限公司 | Method for fixing antibody on medical appliance |
| CN109513766A (en) * | 2018-11-15 | 2019-03-26 | 南通金尼新材料科技有限公司 | A kind of manufacturing method of high concentricity martensitic stainless steel seamless pipe material |
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- 2020-02-26 CN CN202010119335.0A patent/CN111304427B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310778A (en) * | 2007-05-23 | 2008-11-26 | 乐普（北京）医疗器械股份有限公司 | Method for fixing antibody on medical appliance |
| CN109513766A (en) * | 2018-11-15 | 2019-03-26 | 南通金尼新材料科技有限公司 | A kind of manufacturing method of high concentricity martensitic stainless steel seamless pipe material |
Non-Patent Citations (1)
| Title |
|---|
| "2Cr13不锈钢冷拔材断裂的研究";黄灿屏 等;《物理测试》;19911231(第3期);正文第29页 * |
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