CN113118234B - Production process of tinned alloy wire for medical equipment - Google Patents
Production process of tinned alloy wire for medical equipment Download PDFInfo
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- CN113118234B CN113118234B CN202110412916.8A CN202110412916A CN113118234B CN 113118234 B CN113118234 B CN 113118234B CN 202110412916 A CN202110412916 A CN 202110412916A CN 113118234 B CN113118234 B CN 113118234B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0607—Wires
Abstract
The invention discloses a production process of a tinned alloy wire for medical equipment, which comprises the following steps: the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder according to the weight ratio of 1:4, then adding modified bentonite accounting for 20-30% of the total amount of the silicon powder, stirring at the rotating speed of 100-150r/min for 20-30min, and after stirring, sending the mixture into a smelting furnace for smelting treatment. The alloy wire is prepared by smelting an alloy matrix in a smelting furnace, wherein the added refining agent is prepared by mixing silicon powder, rare earth lanthanum powder and modified bentonite, the rare earth lanthanum has strong activity, the silicon powder has excellent fluidity, the blending of the modified bentonite and the alloy matrix is further assisted, the action effect of the modified bentonite and the alloy matrix is improved, and the bentonite is calcined and modified by a calcining furnace.
Description
Technical Field
The invention relates to the technical field of alloy wires for medical equipment, in particular to a production process of a tinned alloy wire for medical equipment.
Background
Medical equipment refers to instruments, devices, appliances, materials or other items used alone or in combination in the human body, and also includes required software. Medical equipment is the most basic element of medical treatment, scientific research, teaching, institutions and clinical discipline work, namely comprises professional medical equipment and also comprises household medical equipment, and the classification methods advocated by the medical equipment are classified into three categories, namely diagnosis equipment, treatment equipment and auxiliary equipment.
Alloy wires are often used as conductive parts for medical equipment, and the alloy wires are easy to corrode, so that the service life of the alloy wires is influenced, and the whole service life of the medical equipment is further influenced.
Disclosure of Invention
The invention aims to provide a production process of a tinned alloy wire for medical equipment, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses a production process of a tinned alloy wire for medical equipment, which comprises the following steps:
the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder according to the weight ratio of 1:4, then adding modified bentonite accounting for 20-30% of the total amount of the silicon powder, stirring at the rotation speed of 100-plus-150 r/min for 20-30min, after stirring, sending into a smelting furnace for smelting treatment, wherein the smelting temperature is 1000-plus-1500 ℃, smelting for 20-30min, after smelting, cooling to room temperature, and then ball-milling to 100-plus-500 meshes to obtain a refining agent;
step two: sending the aluminum alloy matrix into a smelting furnace for smelting treatment, wherein the smelting temperature is 1200-1600 ℃, the smelting is finished, then adding a refining agent, carrying out low-speed stirring treatment, wherein the stirring speed is 100-500r/min, the stirring time is 20-30min, and the stirring is finished to obtain an alloy body;
step three: sending the alloy body into a tin plating solution for electroplating treatment, obtaining a tin-plated alloy after the electroplating is finished, and then carrying out plasma treatment;
step four: carrying out primary wire drawing on the alloy body subjected to the plasma treatment at the wire drawing speed of 2-4m/s to obtain a primary wire drawing alloy wire;
step five: and then carrying out secondary wire drawing at the wire drawing speed of 3-5m/s to obtain the tin-plated alloy wire.
Preferably, the modified bentonite modification method comprises the following steps:
(1) delivering the bentonite into a calcining furnace for calcining treatment, wherein the calcining temperature is 800-1200 ℃, the calcining time is 10-20min, then reducing the temperature to 350 ℃ at the speed of 1-3 ℃/min, then preserving the temperature to 20-30min, soaking for 10-20min by adopting a soaking agent, and finally cooling to the room temperature;
(2) and (2) washing the bentonite in the step (1), drying, soaking in citric acid for 10-20min, then transferring to a sodium dodecyl sulfate solution for ultrasonic dispersion with the dispersion power of 100-200W and the dispersion time of 15-25min, and washing and drying after dispersion is finished to obtain the modified bentonite.
Preferably, the soaking agent is 20-30% of cobalt sulfate by mass fraction.
Preferably, the mass fraction of the sodium dodecyl sulfate solution is 10-20%.
Preferably, the current density in the electroplating treatment is 2.5-3A/dm 2 Electroplating for 10-14 min.
Preferably, the current in the electroplating processThe density is 2.75A/dm 2 And electroplating for 12 min.
Preferably, the tin plating solution is prepared from stannous sulfate, boric acid and water according to the weight ratio of 2:1: 3.
Preferably, the primary drawn alloy wire is heated to 500-550 ℃ at the speed of 1-3 ℃/min before the secondary drawing, and is subjected to heat preservation treatment.
Preferably, the power of the plasma treatment is 100-500W, and the treatment time is 10-20 min.
Compared with the prior art, the invention has the following beneficial effects:
the alloy wire is smelted in a smelting furnace through an alloy matrix, an added refining agent is prepared by mixing silicon powder, rare earth lanthanum powder and modified bentonite, the rare earth lanthanum has strong activity, the silicon powder has excellent fluidity, so that the blending of the modified bentonite and the alloy matrix is assisted, the action effect of the modified bentonite and the alloy matrix is improved, the bentonite is calcined and modified through a calcining furnace, the bentonite is soaked into a bentonite sheet layer through cobalt sulfate in an immersion agent, and then the bentonite is dispersed and activated, so that the dispersibility of the bentonite in the alloy matrix is improved, and in electroplating, electroplating tin is penetrated into the bentonite sheet layer, so that the stability of the electroplating tin is improved, and the corrosion resistance of the alloy wire is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1:
the production process of the tinned alloy wire for the medical equipment comprises the following steps:
the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder according to the weight ratio of 1:4, then adding modified bentonite accounting for 20% of the total amount of the silicon powder, stirring for 20min at the rotating speed of 100r/min, finishing stirring, then sending into a smelting furnace for smelting treatment, wherein the smelting temperature is 1000 ℃, smelting for 20min, finishing smelting, cooling to room temperature, and then ball-milling to 100 meshes to obtain a refining agent;
step two: feeding the aluminum alloy matrix into a smelting furnace for smelting treatment, wherein the smelting temperature is 1200 ℃, the smelting is finished, then adding a refining agent, carrying out low-speed stirring treatment, the stirring speed is 100r/min, the stirring time is 20min, and finishing the stirring to obtain an alloy body;
step three: sending the alloy body into a tin plating solution for electroplating treatment, obtaining a tin-plated alloy after the electroplating is finished, and then carrying out plasma treatment;
step four: carrying out primary wire drawing on the alloy body subjected to the plasma treatment at a wire drawing speed of 2m/s to obtain a primary wire drawing alloy wire;
step five: and then carrying out secondary wire drawing at the wire drawing speed of 3m/s to obtain the tin-plated alloy wire.
The modification method of the modified bentonite in this example is:
(1) feeding bentonite into a calcining furnace for calcining at 800 ℃ for 10min, reducing the temperature to 350 ℃ at the speed of 1 ℃/min, then preserving the temperature for 20min, soaking for 10min by using a soaking agent, and finally cooling to room temperature;
(2) and (2) washing the bentonite in the step (1), drying, soaking in citric acid for 10min, then transferring into a sodium dodecyl sulfate solution for ultrasonic dispersion with the dispersion power of 100W and the dispersion time of 15min, finishing dispersion, washing and drying to obtain the modified bentonite.
The soaking agent in this example was 20% by mass of cobalt sulfate.
The mass fraction of the sodium lauryl sulfate solution in this example was 10%.
The current density in the plating treatment of this example was 2.5A/dm 2 And electroplating for 10 min.
The tin plating solution of the embodiment is prepared by mixing stannous sulfate, boric acid and water according to the weight ratio of 2:1: 3.
In the embodiment, before the secondary wire drawing, the primary wire drawing alloy wire is heated to 500 ℃ at the speed of 1 ℃/min, and is subjected to heat preservation treatment.
The plasma treatment power of this example was 100W, and the treatment time was 10 min.
Example 2:
the production process of the tinned alloy wire for the medical equipment comprises the following steps:
the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder according to the weight ratio of 1:4, then adding modified bentonite accounting for 30% of the total amount of the silicon powder, stirring for 30min at the rotating speed of 150r/min, finishing stirring, then sending into a smelting furnace for smelting treatment, wherein the smelting temperature is 1500 ℃, smelting for 30min, finishing smelting, cooling to room temperature, and then ball-milling to 500 meshes to obtain a refining agent;
step two: feeding the aluminum alloy matrix into a smelting furnace for smelting treatment, wherein the smelting temperature is 1600 ℃, the smelting is finished, then adding a refining agent, carrying out low-speed stirring treatment, the stirring speed is 500r/min, the stirring time is 30min, and finishing the stirring to obtain an alloy body;
step three: sending the alloy body into a tin plating solution for electroplating treatment, obtaining a tin-plated alloy after the electroplating is finished, and then carrying out plasma treatment;
step four: carrying out primary wire drawing on the alloy body subjected to the plasma treatment at a wire drawing speed of 4m/s to obtain a primary wire drawing alloy wire;
step five: and then carrying out secondary wire drawing at the wire drawing speed of 5m/s to obtain the tin-plated alloy wire.
The modification method of the modified bentonite in this example is:
(1) feeding bentonite into a calcining furnace for calcining treatment, wherein the calcining temperature is 1200 ℃, the calcining time is 20min, then reducing the temperature to 350 ℃ at the speed of 3 ℃/min, then preserving the temperature to 30min, soaking for 20min by adopting a soaking agent, and finally cooling to the room temperature;
(2) and (2) washing the bentonite in the step (1), drying, soaking in citric acid for 20min, then transferring into a sodium dodecyl sulfate solution for ultrasonic dispersion with the dispersion power of 200W and the dispersion time of 25min, and after dispersion, washing and drying to obtain the modified bentonite.
The soaking agent in this example was 30% by mass of cobalt sulfate.
The sodium lauryl sulfate solution of this example was 20% by mass.
The current density in the plating treatment of this example was 3A/dm 2 Electroplating for 14 min.
The tin plating solution of the embodiment is prepared by mixing stannous sulfate, boric acid and water according to the weight ratio of 2:1: 3.
In the embodiment, before the secondary wire drawing, the primary wire drawing alloy wire is heated to 550 ℃ at the speed of 3 ℃/min and is subjected to heat preservation treatment.
The plasma treatment power of this example was 500W, and the treatment time was 20 min.
Example 3:
the production process of the tinned alloy wire for the medical equipment comprises the following steps:
the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder according to the weight ratio of 1:4, then adding modified bentonite accounting for 25% of the total amount of the silicon powder, stirring for 25min at the rotating speed of 125r/min, finishing stirring, then sending into a smelting furnace for smelting treatment, wherein the smelting temperature is 1250 ℃, smelting for 25min, finishing smelting, cooling to room temperature, and then ball-milling to 100-mesh and 500-mesh to obtain a fine agent;
step two: feeding the aluminum alloy matrix into a smelting furnace for smelting treatment, wherein the smelting temperature is 1400 ℃, the smelting is finished, then adding a refining agent, carrying out low-speed stirring treatment, the stirring speed is 300r/min, the stirring time is 25min, and finishing the stirring to obtain an alloy body;
step three: sending the alloy body into a tin plating solution for electroplating treatment, obtaining a tin-plated alloy after the electroplating is finished, and then carrying out plasma treatment;
step four: carrying out primary wire drawing on the alloy body subjected to the plasma treatment at a wire drawing speed of 3m/s to obtain a primary wire drawing alloy wire;
step five: and then carrying out secondary wire drawing at the wire drawing speed of 4m/s to obtain the tin-plated alloy wire.
The modification method of the modified bentonite in this example is:
(1) feeding bentonite into a calcining furnace for calcining at 1000 ℃ for 15min, reducing the temperature to 350 ℃ at the speed of 2 ℃/min, then preserving the temperature to 25min, soaking for 15min by using a soaking agent, and finally cooling to room temperature;
(2) and (2) washing the bentonite in the step (1), drying, soaking in citric acid for 15min, then transferring into a sodium dodecyl sulfate solution for ultrasonic dispersion with the dispersion power of 150W and the dispersion time of 20min, and after dispersion, washing and drying to obtain the modified bentonite.
The soaking agent in this example was 25% by mass of cobalt sulfate.
The mass fraction of the sodium lauryl sulfate solution in this example was 15%.
The current density in the plating treatment of this example was 2.75A/dm 2 And electroplating for 12 min.
The tin plating solution of the embodiment is prepared by mixing stannous sulfate, boric acid and water according to the weight ratio of 2:1: 3.
In the embodiment, the primary drawn alloy wire is heated to 525 ℃ at the speed of 2 ℃/min before the secondary drawing, and is subjected to heat preservation treatment.
The plasma treatment power of this example was 300W, and the treatment time was 15 min.
Comparative example 1:
the material and preparation process are basically the same as those of example 3, except that modified bentonite is not added into the essence.
Testing is carried out according to an experimental method corresponding to the corrosion time of a neutral salt spray test of GB 10125-1997;
as shown in examples 1 to 3 of the present invention and comparative example 1, the alloy material of the present invention has excellent corrosion resistance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A production process of a tinned alloy wire for medical equipment is characterized by comprising the following steps:
the method comprises the following steps: preparation of the essence: adding silicon powder into rare earth lanthanum powder, wherein the mass ratio of the silicon powder to the rare earth lanthanum powder is 1:4, then adding modified bentonite accounting for 20-30% of the total amount of the silicon powder, stirring at the rotating speed of 100-1500 r/min for 20-30min, after stirring, sending into a smelting furnace for smelting treatment, wherein the smelting temperature is 1000-1500 ℃, smelting for 20-30min, after smelting, cooling to room temperature, and then ball-milling to 100-500 meshes to obtain a refining agent;
step two: sending the aluminum alloy matrix into a smelting furnace for smelting treatment, wherein the smelting temperature is 1200-1600 ℃, the smelting is finished, then adding a refining agent, carrying out low-speed stirring treatment, wherein the stirring speed is 100-500r/min, the stirring time is 20-30min, and the stirring is finished to obtain an alloy body;
step three: sending the alloy body into a tin plating solution for electroplating treatment, obtaining a tin-plated alloy after the electroplating is finished, and then carrying out plasma treatment;
step four: carrying out primary wire drawing on the alloy body subjected to the plasma treatment at the wire drawing speed of 2-4m/s to obtain a primary wire drawing alloy wire;
step five: then carrying out secondary wire drawing at the wire drawing speed of 3-5m/s to obtain a tinned alloy wire;
the modification method of the modified bentonite comprises the following steps:
(1) delivering the bentonite into a calcining furnace for calcining treatment, wherein the calcining temperature is 800-1200 ℃, the calcining time is 10-20min, then reducing the temperature to 350 ℃ at the speed of 1-3 ℃/min, then preserving the temperature to 20-30min, soaking for 10-20min by adopting a soaking agent, and finally cooling to the room temperature;
(2) and (2) washing the bentonite in the step (1), drying, soaking in citric acid for 10-20min, then transferring to a sodium dodecyl sulfate solution for ultrasonic dispersion with the dispersion power of 100-200W and the dispersion time of 15-25min, and washing and drying after dispersion is finished to obtain the modified bentonite.
2. The process for producing a tinned alloy wire for medical equipment according to claim 1, wherein the soaking agent is 20 to 30 mass% of cobalt sulfate.
3. The process for producing a tinned alloy wire for medical equipment according to claim 2, wherein the mass fraction of the sodium lauryl sulfate solution is 10 to 20%.
4. The process for producing a tin-plated alloy wire for medical equipment according to claim 1, wherein the plating treatment is carried out at a current density of 2.5 to 3A/dm 2 for 10 to 14 min.
5. The process for producing a tin-plated alloy wire for medical equipment according to claim 4, wherein the plating treatment is carried out at a current density of 2.75A/dm 2 for 12 min.
6. The production process of the tinned alloy wire for the medical equipment according to claim 1, wherein the tinning liquid is prepared from stannous sulfate, boric acid and water in a weight ratio of 2:1: 3.
7. The process for producing a tinned alloy wire for medical equipment according to claim 1, wherein the primary drawn alloy wire is heated to 500-550 ℃ at a rate of 1-3 ℃/min and subjected to heat preservation treatment before the secondary drawing.
8. The production process of the tinned alloy wire for the medical equipment, as recited in claim 7, wherein the plasma treatment power is 100-500W, and the treatment time is 10-20 min.
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