CN118308722B - Method for improving bonding strength of surface of forceps tip and coating and bipolar electrocoagulation forceps - Google Patents
Method for improving bonding strength of surface of forceps tip and coating and bipolar electrocoagulation forceps Download PDFInfo
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- CN118308722B CN118308722B CN202410738785.6A CN202410738785A CN118308722B CN 118308722 B CN118308722 B CN 118308722B CN 202410738785 A CN202410738785 A CN 202410738785A CN 118308722 B CN118308722 B CN 118308722B
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- 239000011248 coating agent Substances 0.000 title claims abstract description 74
- 238000000576 coating method Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009297 electrocoagulation Methods 0.000 title abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 59
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052709 silver Inorganic materials 0.000 claims abstract description 52
- 239000004332 silver Substances 0.000 claims abstract description 52
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 44
- 239000000956 alloy Substances 0.000 claims abstract description 44
- 238000005253 cladding Methods 0.000 claims abstract description 42
- 239000008139 complexing agent Substances 0.000 claims abstract description 25
- 230000015271 coagulation Effects 0.000 claims abstract description 24
- 238000005345 coagulation Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 235000011837 pasties Nutrition 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical class [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 15
- 229910021538 borax Inorganic materials 0.000 claims description 14
- 239000004328 sodium tetraborate Substances 0.000 claims description 14
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 15
- 239000010949 copper Substances 0.000 description 12
- 239000010931 gold Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 229910001316 Ag alloy Inorganic materials 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000024121 nodulation Effects 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 210000003800 pharynx Anatomy 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention discloses a method for improving the bonding strength of the surface of a forceps tip and a coating and bipolar electrocoagulation forceps, wherein the method for improving the bonding strength of the surface of the forceps tip and the coating mainly comprises the following steps: firstly, preparing cladding powder, wherein the cladding powder comprises a complexing agent and silver-based alloy powder in a mass ratio of 1:9, adding the complexing agent into the silver-based alloy powder, and uniformly stirring and mixing; preparing the cladding powder into a pasty mixture, coating the pasty mixture on the surfaces of the forceps tips, and then baking the forceps to solidify the pasty mixture on the surfaces of the forceps tips; then, medium-frequency or high-frequency induction heating is carried out, and after cooling, a layer of uniform silver-based alloy coating without melt flow is formed on the surface of the forceps tip. The invention adopts the mode of preparing the coating by induction cladding, thereby obviously reducing the risk of coating falling off on the bipolar coagulation forceps, ensuring good heat conduction performance, reducing the defects of coating falling off and adhesion with the burnt tissue and reducing the damage of the tissue.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a method for improving the bonding strength between the surface of a forceps tip and a coating and bipolar electrocoagulation forceps.
Background
The electric coagulation surgical instrument utilizes the thermal effect of high-frequency current to dehydrate and shrink the vessel wall, coagulate blood in the vessel, and fuse the vessel and blood clot into a whole, thereby achieving the purpose of effective hemostasis. The bipolar electric coagulation forceps have the advantages that the current flows from one forceps tip to the other forceps tip during electric coagulation, and the tissues at the two forceps tips are subjected to the thermal effect of the current, so that the damage degree to adjacent tissues is small, and the surgical operations of ears, nose, throat and brain are widely performed.
There are four types of nickel tip electrodes: silver plating of stainless steel, brass, silver alloys and copper alloys. It is generally believed that the better the thermal conductivity of the forceps material, the less likely it will adhere to the tissue being burned during use. In practice, the effect of the nipper tip electrode of the silver alloy is good, the silver plating effect of the copper alloy is close to that of the silver alloy, the cost is relatively low, however, the plating layer is in a falling risk in use due to poor binding force of the electroplated silver alloy layer. Therefore, a new manufacturing method is needed to be searched, the use cost of tweezers is reduced, and the burden of patients and medical insurance expenses is reduced on the premise of ensuring the use effect of the electrode.
Disclosure of Invention
The invention provides a method for improving the bonding strength of the surface of a forceps tip electrode and a silver-based alloy coating and bipolar electric coagulation forceps, which adopts a mode of induction cladding of a prefabricated coating, so that the risk of coating falling off on the bipolar electric coagulation forceps is obviously reduced, good heat conducting performance is ensured, the defects of coating falling off and adhesion with burnt tissues are reduced, and the damage of the tissues is reduced.
In order to achieve the above object, the present invention discloses a method for improving the bonding strength between the surface of the forceps tip and the coating, comprising the following steps:
S1, preparing cladding powder:
The cladding powder comprises a complexing agent and silver-based alloy powder, wherein the mass ratio of the complexing agent to the silver-based alloy powder is 1:9, the complexing agent is added into the silver-based alloy powder, and the cladding powder is obtained after stirring and mixing uniformly;
S2, preparing a coating:
Preparing the cladding powder into a pasty mixture, coating the pasty mixture on the surfaces of the forceps tip electrodes, and then baking the forceps to solidify the pasty mixture on the surfaces of the forceps tip electrodes; and then carrying out high-frequency induction heating and cooling to form a layer of uniform silver-based alloy coating without melt flow on the surfaces of the forceps tips.
As a preferable scheme, the complexing agent comprises borax and saturated water glass, wherein the mass ratio of the borax to the saturated water glass is (0.2-1): (9-9.8).
As a preferable scheme, the mass ratio of borax to saturated water glass is 0.3:9.7.
As a preferred scheme, the silver-based alloy powder comprises the following components in percentage by mass: 2-5% of Au, 5-15% of Cu, 0-5% of Ni and the balance of Ag.
As a preferable scheme, the granularity of the silver-based alloy powder is more than or equal to 300 meshes, and the purity is more than or equal to 99 percent.
Preferably, in step S2, tweezers are placed in a baking apparatus and baked at a temperature of 200 ℃ for 3 hours.
In the step S2, a layer of uniform silver-based alloy coating without melt flow is formed on the surface of the tip electrode by high-frequency induction heating, and the parameters of the high-frequency induction heating are as follows: current 200A, frequency 60KHz, time 30 seconds.
Preferably, the thickness of the silver-based alloy coating is 0.5-1.5mm.
The invention further discloses bipolar electric coagulation forceps, which comprise an electric coagulation forceps body, wherein the electric coagulation forceps body comprises a forceps tip part, a forceps handle part and a forceps tail part along the length direction of the electric coagulation forceps body, and the forceps tail part is arranged on an insulating seat;
The forceps tip electrode is subjected to induction cladding with a silver-based alloy coating with the thickness of 0.5-1.5mm by adopting the method, and the cladding silver-based alloy coating is polished;
the handle part of the forceps is coated with insulating paint or a plastic insulating layer.
The complexing agent in the cladding powder can adhere the powder to the surface of the electrode by curing on the one hand; on the other hand, the phenomena of sagging and nodulation in the cladding process of the alloy coating can be reduced, and simultaneously boric acid and saturated water glass in the complexing agent can promote the cladding layer to complete deoxidization and slagging, and the defects of air holes, slag inclusion and the like in the coating are eliminated.
The addition of copper in the silver-based powder can improve the wettability with a copper matrix in the cladding process of the coating and increase the binding property; the addition of gold and nickel can increase the hardness and corrosion resistance of the coating.
The beneficial effects of the invention are as follows:
According to the method, the silver-based alloy coating is prepared by adopting a mode of induction cladding of the silver-based alloy coating, and the coating with high binding force is obtained by virtue of metallurgical bonding of the coating and a substrate in the cladding process, so that the risk of easy falling of an electroplating coating is obviously improved; the preparation method can be suitable for copper, copper alloy, titanium alloy, stainless steel and other metal materials, and greatly improves the performance of surgical instruments.
Drawings
FIG. 1 is a schematic diagram of a bipolar coagulation forceps according to the invention; the area A represents the area of the electric coagulation forceps, which is coated with the silver-based alloy coating.
The marks in the figure: 11. the forceps comprise a forceps tail part, 12 forceps handle parts, 13 forceps tip parts, 2 and an insulating seat.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The invention discloses a method for improving the bonding strength of a forceps tip surface and a coating and bipolar electric coagulation forceps, wherein referring to fig. 1, the bipolar electric coagulation forceps comprise an electric coagulation forceps body, the electric coagulation forceps body comprises a forceps tip 13, a forceps handle 12 and a forceps tail 11 along the length direction of the electric coagulation forceps body, and the forceps tail 11 is arranged on an insulating seat 2; the forceps tip 13 (namely, the area A in figure 1) is inductively clad with a silver-based alloy coating with the thickness of 0.5-1.5mm, and the forceps handle 12 is coated with insulating paint or a plastic insulating layer for insulating treatment.
The method for improving the bonding strength of the surface of the forceps tip and the coating comprises the following steps:
S1, preparing cladding powder:
The cladding powder comprises a complexing agent and silver-based alloy powder, wherein the mass ratio of the complexing agent to the silver-based alloy powder is 1:9, the complexing agent is added into the silver-based alloy powder, and the cladding powder is obtained after stirring and mixing uniformly; the complexing agent comprises borax and saturated water glass, wherein the mass ratio of the borax to the saturated water glass is (0.2-1): (9-9.8); the silver-based alloy powder comprises the following components in percentage by mass: 2-5% of Au, 5-15% of Cu, 6-11% of Ni and the balance of Ag; the granularity of the silver-based alloy powder is more than or equal to 300 meshes, the purity is more than or equal to 99 percent;
S2, preparing a coating:
Preparing the cladding powder into a pasty mixture, coating the pasty mixture on the surfaces of the forceps tips, and then baking the forceps at 200 ℃ for 3 hours to obtain a solidified layer, so that the pasty mixture is solidified on the surfaces of the electrodes of the forceps tips; then high-frequency induction heating (heating current 200A, frequency 60KHz and time 30 seconds) is carried out, and after cooling, a layer of uniform silver-based alloy coating without melt flow is formed on the surface of the electrode of the forceps tip.
The technical scheme of the invention is described in detail below with reference to specific embodiments.
Embodiment one:
the method for improving the bonding strength of the surface of the forceps tip and the coating comprises the following two parts:
A first part: preparing cladding powder:
The cladding powder consists of a complexing agent and silver-based alloy powder with granularity of 400 meshes and purity of 99.5 percent according to the mass ratio of 1:9, wherein the complexing agent is added into the silver-based alloy powder and stirred and mixed uniformly to obtain the cladding powder;
wherein, the preparation of the complexing agent comprises the following steps: borax and saturated water glass are used as raw materials, and the borax and the saturated water glass are uniformly mixed according to the mass ratio of 0.3:9.7;
the silver-based alloy powder takes silver, gold, copper and nickel metal powder as raw materials, and comprises 3% of Au, 10% of Cu, 9% of Ni and the balance of silver, wherein the sum of mass fractions of all components is 90%;
A second part: preparing a coating:
preparing the cladding powder into a pasty mixture, then carrying out cold coating on the pasty mixture on the surfaces of the tips of the tweezers, baking the tweezers in an oven at 200 ℃ for 3 hours, then carrying out induction heating (heating current is 200A, frequency is 60KHz and time is 30 seconds), and cooling to form a layer of uniform metal coating without melt flow on the substrate, wherein the thickness of the coating is 0.8mm. And finally, polishing the surface of the coating after cladding.
The resistivity between the coating prepared in the embodiment and the body of the electric coagulation forceps is 0.59 x 10 -8 omega.m, and the binding force of the coating is 50Mpa.
Embodiment two:
the method for improving the bonding strength of the surface of the forceps tip and the coating comprises the following two parts:
A first part: preparing cladding powder:
the cladding powder consists of a complexing agent and silver-based alloy powder with 300 meshes of granularity and 99.8% of purity according to the mass ratio of 1:9, wherein the complexing agent is added into the silver-based alloy powder and stirred and mixed uniformly to obtain cladding powder;
Wherein, the preparation of the complexing agent comprises the following steps: borax and saturated water glass are used as raw materials, and the borax and the saturated water glass are mixed according to the ratio of 0.8:9.2;
The silver-based alloy powder takes silver, gold, copper and nickel metal powder as raw materials, and consists of 5% of Au, 15% of Cu, 10% of Ni and the balance of silver, wherein the sum of mass fractions of all components is 90%;
A second part: preparing a coating:
Preparing the cladding powder into a pasty mixture, then carrying out cold coating on the pasty mixture on the surfaces of the tips of the tweezers, baking the tweezers in an oven at 200 ℃ for 3 hours, then carrying out induction heating (heating current is 200A, frequency is 60KHz and time is 30 seconds), and cooling to form a layer of uniform metal coating without melt flow on the substrate, wherein the thickness of the coating is 1.2mm. And finally, polishing the surface of the coating after cladding.
The resistivity between the coating prepared in the embodiment and the body of the electric coagulation forceps is 1.98 x 10 -8 omega.m, and the binding force of the coating is 59Mpa.
Embodiment III:
the method for improving the bonding strength of the surface of the forceps tip and the coating comprises the following two parts:
A first part: preparing cladding powder:
the cladding powder consists of a complexing agent and silver-based alloy powder with granularity of 500 meshes and purity of 99.7 percent according to the mass ratio of 1:9, wherein the complexing agent is added into the silver-based alloy powder and stirred and mixed uniformly to obtain the cladding powder;
wherein, the preparation of the complexing agent comprises the following steps: borax and saturated water glass are used as raw materials, and the borax and the saturated water glass are uniformly mixed according to the mass ratio of 0.5:9.5;
The silver-based alloy powder takes silver, gold, copper and nickel metal powder as raw materials, and comprises 3% of Au, 8% of Cu, 6% of Ni and the balance of silver, wherein the sum of mass fractions of all components is 90%;
A second part: preparing a coating:
Preparing the cladding powder into a pasty mixture, then carrying out cold coating on the pasty mixture on the surfaces of the tips of the tweezers, baking the tweezers in an oven at 200 ℃ for 3 hours, then carrying out induction heating (heating current is 200A, frequency is 60KHz and time is 30 seconds), and cooling to form a layer of uniform metal coating without melt flow on the substrate, wherein the thickness of the coating is 0.6mm. And finally, polishing the surface of the coating after cladding.
The resistivity between the coating prepared in the embodiment and the body of the electric coagulation forceps is 0.61 x 10 -8 omega.m, and the binding force of the coating is 55Mpa.
The preparation method can be applied to the tips of forceps made of different materials, such as copper, copper alloy, titanium alloy, stainless steel and the like, and the performance of the surgical instrument is greatly improved.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. All equivalent changes or modifications made according to the essence of the present invention should be included in the scope of the present invention.
Claims (6)
1. The method for improving the bonding strength of the surface of the forceps tip and the coating is characterized by mainly comprising the following steps:
S1, preparing cladding powder:
The cladding powder comprises a complexing agent and silver-based alloy powder, wherein the mass ratio of the complexing agent to the silver-based alloy powder is 1:9, the complexing agent is added into the silver-based alloy powder, and the cladding powder is obtained after stirring and mixing uniformly;
the complexing agent comprises borax and saturated water glass, wherein the mass ratio of the borax to the saturated water glass is (0.2-1): (9-9.8);
the silver-based alloy powder comprises the following components in percentage by mass: 2-5% of Au, 5-15% of Cu, 0-5% of Ni and the balance of Ag;
S2, preparing a coating:
Preparing cladding powder into a pasty mixture, coating the pasty mixture on the surfaces of forceps tips, baking forceps to solidify the pasty mixture on the surfaces of the forceps tips, performing medium-frequency or high-frequency induction heating, and cooling to form a layer of uniform silver-based alloy coating without molten liquid flow on the surfaces of the forceps tips;
the thickness of the silver-based alloy coating is 0.5-1.5mm.
2. The method for improving the bonding strength of the surface of the forceps tip and the coating according to claim 1, wherein the mass ratio of borax to saturated water glass is 0.3:9.7.
3. The method for improving the bonding strength between the surfaces of the forceps tips and the coating according to claim 1 or 2, wherein the granularity of the silver-based alloy powder is more than or equal to 300 meshes, and the purity is more than or equal to 99%.
4. The method of improving the bonding strength of the surfaces of the forceps tips and the coating according to claim 1, wherein in the step S2, the forceps are placed in a baking apparatus and baked at a temperature of 200 ℃ for 3 hours.
5. The method for improving the bonding strength between the surface of the forceps tip and the coating according to claim 1, wherein in the step S2, a layer of uniform silver-based alloy coating without melt flow is formed on the surface of the electrode of the forceps tip by a high-frequency induction heating method, and the parameters of the high-frequency induction heating are as follows: current 200A, frequency 60KHz, time 30 seconds.
6. The bipolar electric coagulation forceps are characterized by comprising an electric coagulation forceps body, wherein the electric coagulation forceps body comprises a forceps tip part, a forceps handle part and a forceps tail part along the length direction of the electric coagulation forceps body, and the forceps tail part is arranged on an insulating seat;
The method of any one of claims 1-5 is adopted to induce cladding of a silver-based alloy coating with the thickness of 0.5-1.5mm on the tip of the forceps, and the cladding silver-based alloy coating is polished;
the handle part of the forceps is coated with insulating paint or a plastic insulating layer.
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| CN202410738785.6A CN118308722B (en) | 2024-06-07 | 2024-06-07 | Method for improving bonding strength of surface of forceps tip and coating and bipolar electrocoagulation forceps |
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| CN202410738785.6A CN118308722B (en) | 2024-06-07 | 2024-06-07 | Method for improving bonding strength of surface of forceps tip and coating and bipolar electrocoagulation forceps |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153228A (en) * | 1987-12-10 | 1989-06-15 | Asahi Daiyamondo Kogyo Kk | Vapor phase composite method for producing diamond tool |
| CN108588710A (en) * | 2018-07-24 | 2018-09-28 | 武汉材料保护研究所有限公司 | A kind of ni base alloy coating and composite assistant preparation method for cold coating Medium frequency induction cladding |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT458B (en) * | 1899-01-02 | 1899-10-25 | Heberlein & Cie | |
| JPH07275255A (en) * | 1994-04-11 | 1995-10-24 | Johnson & Johnson Medical Kk | Bipolar electric tweezers |
| KR20060085527A (en) * | 2005-01-24 | 2006-07-27 | 양원동 | Nano silver and perfume contain pincers |
| CN201260697Y (en) * | 2008-09-28 | 2009-06-24 | 郑州赛福特电子设备有限公司 | Novel high-frequency double-pole electric coagulation forceps |
| CN102978608A (en) * | 2012-12-20 | 2013-03-20 | 山西焦煤爱钢装备再制造有限公司 | Quick manufacturing method of anti-corrosion compound pipeline |
| CN105328405A (en) * | 2015-09-29 | 2016-02-17 | 高鹏 | Method for manufacturing anti-abrasion alloy hydraulic cylinder |
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2024
- 2024-06-07 CN CN202410738785.6A patent/CN118308722B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01153228A (en) * | 1987-12-10 | 1989-06-15 | Asahi Daiyamondo Kogyo Kk | Vapor phase composite method for producing diamond tool |
| CN108588710A (en) * | 2018-07-24 | 2018-09-28 | 武汉材料保护研究所有限公司 | A kind of ni base alloy coating and composite assistant preparation method for cold coating Medium frequency induction cladding |
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