CN113263161A - Preparation method of soldering bit - Google Patents
Preparation method of soldering bit Download PDFInfo
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- CN113263161A CN113263161A CN202110449257.5A CN202110449257A CN113263161A CN 113263161 A CN113263161 A CN 113263161A CN 202110449257 A CN202110449257 A CN 202110449257A CN 113263161 A CN113263161 A CN 113263161A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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Abstract
The invention discloses a preparation method of a soldering bit, which mainly comprises the following steps: selecting 10-40 parts of electrolytic copper plate, 10-40 parts of Fe, 5-10 parts of Cr and 5-10 parts of Ni according to mass percentage; putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 15-25 deg.C for 30 min; vacuum smelting; preparing a coarse material matrix: preparing a coarse material substrate with copper as a copper core and copper-iron alloy as a shell; fine processing of the coarse material; the soldering bit prepared by the material and the process has the advantages of long service life, low production cost and no environmental pollution, and the service life of the soldering bit can be controlled by adjusting the proportion of the copper content and the iron content, so that the soldering bit has wider application occasions.
Description
Technical Field
The invention relates to the technical field of metal material preparation, in particular to a preparation method of a soldering bit.
Background
The soldering bit is a matched product of the electric soldering iron and is integrated. The soldering bit, soldering bit and welding bit are all one kind of product, and are the matching product of electric soldering iron and electric welding bench, and the main material is copper, and belongs to the consumable article.
The soldering iron head is used as a key part in the soldering process and is a key control factor influencing the soldering quality and the service life. With the European Union ROHS standard, the use of lead-free soldering tin increases the corrosion rate multiple of the traditional soldering bit, and also brings continuous increase of production cost; in addition, the copper matrix needs to be electroplated in the production process of the traditional soldering bit, and waste liquid generated in the electroplating process also seriously influences the environment, so that the requirement of an environment-friendly soldering bit material is imperative.
At present, the soldering bit has short service life, complicated production process, higher production cost, unobvious performance and difficult quality control.
Disclosure of Invention
In order to solve the technical problem, the invention provides a preparation method and a use method of a soldering bit.
The technical points of the invention are as follows:
a method for preparing a soldering iron tip comprises the following steps:
(1) compatibility of raw materials
Selecting 10-90 parts of electrolytic copper plate and 10-90 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 15-25 deg.C for 30 min;
(3) vacuum melting
Putting 50-60% of dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, when smelting, pumping the vacuum degree to 3-6Pa, continuing heating to raise the temperature, raising the power to 55-75kW, keeping, after all raw materials in the smelting furnace are uniformly melted, preparing molten copper, putting the rest of electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, when smelting, pumping the vacuum degree to 1-3Pa, continuing heating to raise the temperature, raising the power to 45-70kW, keeping, after all raw materials in the smelting furnace are uniformly melted, slowly filling high-purity argon into the furnace body, refining for 1-3min, casting, cooling and discharging to obtain a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 65-70mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe to fully fill the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature at 100-150 ℃, and keeping the temperature for 45min to prepare a coarse material substrate with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
Further, the Fe element in the step (1) is added in a CuFe master alloy mode, so that other impurities are prevented from entering compatibility, and the performance of the prepared soldering iron tip is prevented from being affected.
Furthermore, the purity of Cr and Ni in the step (1) is 99.9%, and the electroplating effect is improved.
Further, in the step (4), the consumable electrode is arranged in a vacuum consumable arc melting furnace for melting, and the melting current is set to be 1000-.
Furthermore, the outer diameter of the copper-iron alloy pipe in the step (4) is 80-90mm, so that the wear-resisting effect can be achieved, and the thickness is controlled, so that the heat-conducting property and the electric conductivity of the iron cautery head can be controlled.
Further, in the step (4), when the copper melt is cooled, hydrogen gas is introduced into the cooling furnace to prevent the copper from generating gaps, softening and the like during cooling.
Further, the sealing plate in the step (4) is made of an alloy tungsten plate, and the melting point of the dock is high, so that the dock is not deformed or softened due to the temperature of the copper solution.
Further, the alloy tungsten plate is made of the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
Furthermore, the preparation method of the alloy tungsten plate comprises the following steps: mixing and arranging silicon carbide wires and B-Ti fibers to prepare a mixed fiber framework, mixing silicon carbide powder, tungsten powder and a Gu alloy adhesive to obtain mixed filling powder, carrying out hot melting on the mixed filling powder, pouring the hot melted mixed filling powder into a gap of the mixed fiber framework, and cooling to prepare the sealing plate.
Further, in the step (4), when the molten copper prepared in the step 3 is injected into the copper-iron alloy pipe under pressure, the power is reduced to 40KW, and casting is started after the temperature is maintained for 0.5 minute.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the environment-friendly soldering bit material developed by the invention has the advantages of long service life, low production cost and no environmental pollution, and the service life of the soldering bit can be controlled by adjusting the proportion of the contents of copper and iron, so that the soldering bit material is more widely used.
Secondly, compared with the traditional iron plating soldering bit, the iron plating cost is reduced, and the problems that in the prior art, the electroplating process of iron plating is complicated and difficult to control, and the quality of the prepared soldering bit is difficult to control due to the influence of factors such as the concentration of electroplating liquid, the pH value and the like are solved.
Thirdly, the electric conductivity and the tin wetting effect of the soldering iron head are improved to a greater extent by adopting high-purity copper as the substrate, the bending strength of the prepared soldering iron head is ensured by the tubular copper-iron alloy, the tin wetting effect of the soldering iron head is improved, and the service life of the soldering iron head is prolonged.
Drawings
FIG. 1 is a microstructure of a soldering tip made in accordance with example 7 of the present invention.
Detailed Description
Example 1:
a method for preparing a soldering iron tip comprises the following steps:
(1) compatibility of raw materials
Selecting 10 parts of electrolytic copper plate and 90 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe into a drying oven, and setting the drying temperature as follows: drying at 15 deg.C for 30 min;
(3) vacuum melting
Putting 50% of the dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 3Pa during smelting, continuing heating to raise the temperature, raising the power to 55kW, maintaining, preparing a copper solution after all raw materials in the smelting furnace are uniformly molten, putting the rest of electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 1Pa during smelting, continuing heating to raise the temperature, raising the power to 45kW, maintaining, uniformly melting all raw materials in the smelting furnace, slowly filling high-purity argon into the furnace body, refining for 1min, casting, cooling and discharging to prepare a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 65mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe, fully filling the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature to 100 ℃, and keeping the temperature for 45min to prepare a coarse material matrix with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
Wherein the Fe element in the step (1) is added in the form of CuFe master alloy.
The purity of Cr and Ni in step (1) was 99.9%.
And (4) putting the consumable electrode into a vacuum consumable arc melting furnace for melting, wherein the melting current is set to be 1000A.
The outer diameter of the copper-iron alloy pipe in the step (4) is 80 mm.
In the step (4), the sealing plate is made of an alloy tungsten plate.
The alloy tungsten plate is prepared from the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
The preparation method of the alloy tungsten plate comprises the following steps: mixing and arranging silicon carbide wires and B-Ti fibers to prepare a mixed fiber frame, mixing silicon carbide powder, tungsten powder and Gu alloy adhesive to obtain mixed filling powder, hot-melting the mixed filling powder, pouring the hot-melted mixed filling powder into gaps of the mixed fibers, and cooling the mixed filling powder to prepare the sealing plate.
And (4) when the molten copper prepared in the step (3) is injected into the copper-iron alloy pipe under pressure, reducing the power to 40KW, and starting casting after keeping for 0.5 minute.
Example 2:
the difference from the embodiment 1 is that
A method for preparing a soldering iron tip comprises the following steps:
(1) compatibility of raw materials
Selecting 25 parts of electrolytic copper plate and 75 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 20 deg.C for 30 min;
(3) vacuum melting
Putting 55% of the dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 3Pa during smelting, continuing to heat and raise the temperature, raising the power to 60kW, maintaining, preparing a copper melt after all raw materials in the smelting furnace are uniformly melted, putting the rest of the electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 2Pa during smelting, continuing to heat and raise the temperature, raising the power to 65kW, maintaining, slowly filling high-purity argon into the furnace body after all the raw materials in the smelting furnace are uniformly melted, refining for 2min, casting, cooling and discharging to prepare a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 68mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe, fully filling the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature to 120 ℃, and keeping the temperature for 45min to prepare a coarse material matrix with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
Wherein the Fe element in the step (1) is added in the form of CuFe master alloy.
The purity of Cr and Ni in step (1) was 99.9%.
And (4) putting the consumable electrode into a vacuum consumable arc melting furnace for melting, wherein the melting current is set to be 1500A.
The outer diameter of the copper-iron alloy pipe in the step (4) is 85 mm.
And (4) the sealing plate is made of an alloy tungsten plate.
The alloy tungsten plate is prepared from the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
The preparation method of the alloy tungsten plate comprises the following steps: mixing and arranging silicon carbide wires and B-Ti fibers to prepare a mixed fiber frame, mixing silicon carbide powder, tungsten powder and Gu alloy adhesive to obtain mixed filling powder, hot-melting the mixed filling powder, pouring the hot-melted mixed filling powder into gaps of the mixed fibers, and cooling the mixed filling powder to prepare the sealing plate.
Example 3:
the difference from the embodiment 2 is that
A method for preparing a soldering iron tip comprises the following steps:
(1) compatibility of raw materials
Selecting 40 parts of electrolytic copper plate and 60 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 25 deg.C for 30 min;
(3) vacuum melting
Putting 60% of the dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 6Pa during smelting, continuing heating to raise the temperature, raising the power to 75kW, maintaining, preparing a copper solution after all raw materials in the smelting furnace are uniformly molten, putting the rest of electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 3Pa during smelting, continuing heating to raise the temperature, raising the power to 70kW, maintaining, uniformly melting all raw materials in the smelting furnace, slowly filling high-purity argon into the furnace body, refining for 3min, casting, cooling and discharging to prepare a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 70mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe, fully filling the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature at 150 ℃, and keeping the temperature for 45min to prepare a coarse material matrix with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
The Fe element in the step (1) is added in the form of CuFe master alloy.
The purity of Cr and Ni in step (1) was 99.9%.
And (4) putting the consumable electrode into a vacuum consumable arc melting furnace for melting, wherein the melting current is set to be 1800A.
The outer diameter of the copper-iron alloy pipe in the step (4) is 90 mm.
And (4) the sealing plate is made of an alloy tungsten plate.
The alloy tungsten plate comprises the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
The silicon carbide wires and the B-Ti fibers are mixed and distributed to prepare a mixed fiber frame, silicon carbide powder, tungsten powder and Gu alloy adhesive are mixed to obtain mixed filling powder, the mixed filling powder is hot-melted and then poured into gaps of the mixed fibers, and the sealing plate is prepared after cooling.
Example 4:
the difference from the embodiment 3 is that
A method for preparing a soldering iron tip comprises the following steps:
(1) compatibility of raw materials
Selecting 65 parts of electrolytic copper plate and 45 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 25 deg.C for 30 min;
(3) vacuum melting
Putting 55% of the dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 6Pa during smelting, continuing to heat and raise the temperature, raising the power to 75kW, maintaining, preparing a copper melt after all raw materials in the smelting furnace are uniformly melted, putting the rest of electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, pumping the vacuum degree to 3Pa during smelting, continuing to heat and raise the temperature, raising the power to 70kW, maintaining, uniformly melting all raw materials in the smelting furnace, slowly filling high-purity argon into the furnace body, refining for 3min, casting, cooling and discharging to prepare a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 65mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe, fully filling the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature at 150 ℃, and keeping the temperature for 45min to prepare a coarse material matrix with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
The Fe element in the step (1) is added in the form of CuFe master alloy.
The purity of Cr and Ni in step (1) was 99.9%.
And (4) putting the consumable electrode into a vacuum consumable arc melting furnace for melting, wherein the melting current is set to be 1800A.
The outer diameter of the copper-iron alloy pipe in the step (4) is 90 mm.
And (4) the sealing plate is made of an alloy tungsten plate.
The alloy tungsten plate is prepared from the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
The preparation method of the alloy tungsten plate comprises the following steps: mixing and arranging silicon carbide wires and B-Ti fibers to prepare a mixed fiber frame, mixing silicon carbide powder, tungsten powder and Gu alloy adhesive to obtain mixed filling powder, hot-melting the mixed filling powder, pouring the hot-melted mixed filling powder into gaps of the mixed fibers, and cooling the mixed filling powder to prepare the sealing plate.
Example 5:
the difference from the embodiment 4 is that
(1) Compatibility of raw materials
Selecting 80 parts of electrolytic copper plate and 20 parts of Fe according to mass percentage.
Example 6:
the difference from the example 5 is that
The outer diameter of the copper-iron alloy pipe in the step (4) is 80 mm.
Example 7:
the difference from the example 6 is that
When the molten copper is cooled, a hydrogen atmosphere is introduced into the cooling furnace.
Example 8:
the difference from the example 7 is that
(1) Compatibility of raw materials
Selecting 90 parts of electrolytic copper plate and 10 parts of Fe according to mass percentage.
The experimental data shown in Table 1 are obtained by performing a performance analysis at 420 ℃ on tips prepared in examples 1-8.
Table 1: soldering tip Performance data sheet of examples 1-7
As can be seen from the data in table 1: the soldering iron tips prepared in examples 1 to 8 have better performances such as conductivity, bending strength and tin pick-up effect than the existing soldering iron tips, and the tin pick-up effect of the soldering iron tips prepared in examples 1 to 8 reaches the standard of use, wherein the soldering iron tip prepared in example 7 has the best conductivity and the largest number of times of use.
Claims (10)
1. A preparation method of a soldering iron tip is characterized by comprising the following steps:
(1) compatibility of raw materials
Selecting 10-90 parts of electrolytic copper plate and 10-90 parts of Fe according to mass percentage;
(2) processing of raw materials
Putting the selected electrolytic copper plate and Fe element into a drying oven, and setting the drying temperature as follows: drying at 15-25 deg.C for 30 min;
(3) vacuum melting
Putting 50-60% of dried electrolytic copper plate into a vacuum smelting furnace, carrying out vacuum smelting, when smelting, pumping the vacuum degree to 3-6Pa, continuing heating to raise the temperature, raising the power to 55-75kW, keeping, after all raw materials in the smelting furnace are uniformly melted, preparing molten copper, putting the rest of electrolytic copper plate and Fe into the vacuum smelting furnace, carrying out vacuum smelting, when smelting, pumping the vacuum degree to 1-3Pa, continuing heating to raise the temperature, raising the power to 45-70kW, keeping, after all raw materials in the smelting furnace are uniformly melted, slowly filling high-purity argon into the furnace body, refining for 1-3min, casting, cooling and discharging to obtain a copper-iron alloy matrix;
(4) coarse material matrix preparation
Prefabricating a consumable electrode, performing hot forging on a copper-iron alloy matrix prepared by vacuum melting, processing the copper-iron alloy matrix into a copper-iron alloy pipe with an inner hole diameter of 65-70mm, sealing a pipe opening at one end of the copper-iron alloy pipe through a sealing plate, placing the copper-iron alloy pipe in a cooling furnace, pressurizing and injecting the copper melt prepared by vacuum melting in the step (3) into the copper-iron alloy pipe to fully fill the copper-iron alloy pipe with the copper melt, and setting the temperature of the cooling furnace as follows after the filling is completed: keeping the temperature at 300 ℃ for 15min, setting the annealing temperature at 100-150 ℃, and keeping the temperature for 45min to prepare a coarse material substrate with the center being copper and the outer wall being copper-iron alloy;
(5) coarse material finishing
And taking down the sealing plate, polishing the surface of the coarse material substrate to make the surface smooth, cutting the two pipe orifices, ensuring that the notches at the two pipe orifices are smooth, and processing according to the size of the soldering bit to obtain the soldering bit substrate.
2. The method of claim 1, wherein the Fe element in step (1) is added in the form of a CuFe master alloy.
3. The method of claim 1, wherein the purity of the Cr and Ni in step (1) is 99.9%.
4. The method for preparing the soldering iron tip according to claim 3, wherein the consumable electrode is placed in a vacuum consumable arc melting furnace for melting in the step (4), and the melting current is set to be 1000-1800A.
5. The method of claim 1, wherein the copper-iron alloy tube of step (4) has an outer diameter of 80-90 mm.
6. The method of claim 1, wherein in step (4), hydrogen gas is introduced into the cooling furnace while the copper melt is being cooled.
7. The method of claim 1, wherein in step (4) the sealing sheet is a tungsten alloy sheet.
8. The method of claim 7, wherein the alloy tungsten plate is made of the following materials in parts by weight: 15 parts of tungsten powder, 25 parts of silicon carbide wire, 10 parts of silicon carbide powder, 5 parts of B-Ti fiber and 15 parts of Gu alloy adhesive.
9. The method of manufacturing a soldering tip according to claim 8, wherein the alloy tungsten plate is manufactured by: mixing and arranging silicon carbide wires and B-Ti fibers to prepare a mixed fiber frame, mixing silicon carbide powder, tungsten powder and Gu alloy adhesive to obtain mixed filling powder, hot-melting the mixed filling powder, pouring the hot-melted mixed filling powder into gaps of the mixed fibers, and cooling the mixed filling powder to prepare the sealing plate.
10. The method of claim 7, wherein the sealing sheet is a tungsten sheet.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115125456A (en) * | 2022-07-01 | 2022-09-30 | 深圳市海目星激光智能装备股份有限公司 | FeCrAlNiCu alloy, preparation method thereof and soldering bit |
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| CN115125456A (en) * | 2022-07-01 | 2022-09-30 | 深圳市海目星激光智能装备股份有限公司 | FeCrAlNiCu alloy, preparation method thereof and soldering bit |
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