WO2004048024A1 - ハンダ取扱い用コテ先及びその製造方法、同コテ先を用いた電気ハンダゴテと電気ハンダ吸取りゴテ - Google Patents
ハンダ取扱い用コテ先及びその製造方法、同コテ先を用いた電気ハンダゴテと電気ハンダ吸取りゴテ Download PDFInfo
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- WO2004048024A1 WO2004048024A1 PCT/JP2003/014958 JP0314958W WO2004048024A1 WO 2004048024 A1 WO2004048024 A1 WO 2004048024A1 JP 0314958 W JP0314958 W JP 0314958W WO 2004048024 A1 WO2004048024 A1 WO 2004048024A1
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- Prior art keywords
- iron
- tip
- particles
- sintering
- soldering
- Prior art date
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- 0 SC1*=CCCC1 Chemical compound SC1*=CCCC1 0.000 description 1
Classifications
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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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F7/064—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts using an intermediate powder layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/02—Soldering irons; Bits
- B23K3/025—Bits or tips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/02—Soldering irons; Bits
- B23K3/03—Soldering irons; Bits electrically heated
- B23K3/0338—Constructional features of electric soldering irons
-
- 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
- C22C38/007—Ferrous alloys, e.g. steel alloys containing silver
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
Definitions
- the present invention relates to a soldering iron tip, more specifically an iron tip of an electric soldering iron or a suction nozzle of an electric soldering iron, which prevents erosion by solder at the tip of a core material made of copper or a copper alloy. More particularly, the present invention relates to a soldering iron tip provided with a soldering method, and a method for manufacturing the same, and further relates to an electric soldering iron or an electric soldering ironing iron using the same.
- soldering Connection and joining in the electronics industry are generally performed by soldering.
- This soldering method is mainly classified into a mass soldering method (batch soldering) and a manual soldering method (manual soldering).
- the mass soldering method consists of a flow soldering method in which elements and components are mounted on a printed circuit board and then immersed in molten solder, and a solder paste in which solder particles and flux are kneaded with a binder (additive).
- a reflow soldering method in which elements and components are placed on the device, and then heating and soldering are performed. Each of these methods has the feature that a large number of locations can be soldered simultaneously.
- the manual soldering method is a method of soldering using an electric soldering iron, which has been widely used in the past, and has the feature that anyone can work easily.
- the manual soldering iron is used in order to repair defective parts of the soldered parts after the above-mentioned mass soldering method or to attach parts that could not be soldered by the mass soldering method.
- the ring method is indispensable You.
- a conventional iron tip for an electric soldering iron is made of copper or a copper alloy, and the tip of the tip is iron-coated with a thickness of several tens to several hundreds of meters to prevent erosion by solder. Then, solder is coated on the iron-plated part, and soldering work is performed in this part.
- solder the main component of solder is usually tin and lead (Sn-Pb solder represented by Sn-Pb eutectic solder).
- Sn-Pb solder represented by Sn-Pb eutectic solder
- lead-free solder for example, Sn-Cu-based solder, Sn-Ag-based solder, Sn-Ag-Cu-based solder, etc.
- this lead-free solder generally tends to be inferior to Sn-Pb-based solder in terms of solderability (property such as good wettability and easy spread of hangs, etc.).
- solder wettability The main cause of the deterioration of solder wettability is that lead-free solder has a melting point about 20 to 45 ° C higher than that of Sn_Pb-based solder, and the tip of the iron tip is easily oxidized. It becomes. For this reason, the workability of soldering by the manual soldering method has deteriorated, and an improvement thereof has been required. In particular, the adoption of lead-free solder makes it easier for soldering defects to occur in the mass soldering method, and the frequency of rework is increasing.
- the applicant of the present application has previously invented a technique for improving the solderability of a soldering iron tip while maintaining the erosion of the tip by the solder at substantially the same level as that of the iron-coated product. See Japanese Patent Application Publication No. 17629/29).
- iron tip nickel alloy plating is applied to the tip of the iron tip, or a coating member (bulk material) made of iron nickel alloy is provided. Improve wearability.
- solder removal Another work related to soldering is solder removal, which removes solder at unnecessary locations.
- an electric soldering iron is used.
- the electric solder suction iron heats the suction nozzle by heating means such as a built-in heater, and the tip of the heated suction nozzle comes into contact with the solder to melt the solder.
- the molten solder is sucked into the inside through a suction port opened at the tip of the chil.
- Suction is performed by suction means such as a vacuum pump, and the molten metal is stored in a tank with a filter installed in the middle of the route.
- soldering tip of the electric soldering iron is required. It is the same, and the tip has the same iron plating. As with the soldering tips of electric soldering irons, there is a need to prevent erosion while ensuring solder wettability even when using lead-free solder.
- soldering iron tip in this specification, the life of the tip of the iron tip and the suction nozzle (collectively referred to as the soldering iron tip in this specification) is oxidized, and the life of the tip (the wettability of the hang) is reduced. Although it gradually declined and finally became wet), the life due to the erosion of the solder was equivalent to that of iron-plated products.
- lead-free solder is characterized by a large amount of erosion of the soldering iron tip due to the high melting point of Sn-Pb solder. For this reason, there is still a problem to be solved with regard to the shortening of the service life due to the increase in the amount of erosion when using lead-free solder.
- the present invention improves the prevention of erosion by solder of a soldering iron tip when using lead-free solder, improves solderability or removability of solder, and is optimal according to the type of solder.
- An object of the present invention is to provide a soldering iron tip capable of easily obtaining a material of a tip portion of a soldering iron and further reducing the emission of environmental pollutants, and a method of manufacturing the same. Disclosure of the invention
- the invention of claim 1 is a soldering iron tip used for an iron tip of an electric soldering iron or an electric solder suction iron, wherein the tip of a core material made of copper or a copper alloy is formed by powder metallurgy.
- An iron tip member made of a manufactured metal particle sintered body is provided, wherein the metal particle sintered body mainly contains at least one element of iron, nickel, and cobalt. .
- the metal particle sintered body is manufactured by the powder metallurgy method, the degree of freedom in imparting a shape is large, and the metal particle sintered body can be manufactured in a shape close to a completed shape. Therefore, the cutting step can be shortened or omitted. Also, unlike the melting method, there is no need to raise the temperature to the melting point of iron, reducing energy consumption and reducing the environmental burden. Further, since there is no need to perform a drainage treatment as in the case of using the conventional iron plating, it is possible to reduce adverse effects on the environment, and to enable labor saving and mass production.
- the main component of the sintered metal particles is iron or its congener, nickel or cobalt, which has similar characteristics to iron, or a combination thereof, both the erosion resistance and solder wettability of solder are improved. High iron tip tips can be obtained.
- iron Basically, nickel and cobalt are added as the main component, and the erosion resistance and solder wettability can be further improved as compared with those containing iron alone as the main component.
- the invention according to claim 2 is the soldering iron tip according to claim 1, wherein the metal particle sintered body is made of a sintered base material or a sintered base material and a sintering auxiliary material; As a base material, at least one of iron particles, nickel particles, and cobalt particles is used.
- the main component of the metal particle sintered body is formed by the sintering substrate using at least one of iron particles, nickel particles, and cobalt particles. By freely adjusting the mixing ratio of these particles, the required component ratio can be easily obtained.
- the iron particles used as the sintering base are iron powder having a purity of 99.5% or more.
- electric field iron powder or carbonyl iron powder may be used (claim 4).
- These are iron powders obtained by a known electrolytic method or a carbonyl method as a method for producing metal powder.
- the electrolysis method is a method in which iron is precipitated from an aqueous solution of iron sulfate or iron chloride containing iron by an electric field, and this electric field iron is pulverized and finish reduced.
- the use of the electric field iron can prevent a decrease in heat and electric conductivity due to impurities, a deterioration in solderability or a property of removing solder, and increase the density of the sintered metal particles.
- the iron particles contain a large amount of impurities such as carbon, oxygen, nitrogen or hydrogen, the relative density of the sintered metal particles becomes 90% or less, whereas when using high-purity iron powder, it becomes 96% or more. Can be increased.
- the force luponyl method is a method in which steam is added to carbonyl iron F e (CO) 5 to thermally decompose it into iron and carbon dioxide gas to form a powder. This method is suitable for the production of fine powder, and carbonyl iron powder is most suitable as a component of the sintered substrate of the present invention.
- the invention of claim 5 is the soldering iron tip according to any one of claims 2 to 4, wherein the metal particle sintered body has a content of the sintered base material of 55% to 99%. . 9 9%.
- the characteristics of the sintered base material as a main component effectively act, and the erosion resistance of the hang and the solder wettability can be sufficiently improved.
- the component ratio when the component ratio is expressed by%, it is expressed by mass% unless otherwise specified.
- the metal particle sintered body comprises a sintered base material and a sintering auxiliary material
- the auxiliary material includes at least a first sintering auxiliary material, and as the first sintering auxiliary material, at least one of copper particles, silver particles, tin particles, boron particles, and carbon particles is used.
- the content of the first sintering auxiliary material in the metal particle sintered body is 0.01% to 40% (claim 7).
- the amount of the first sintering auxiliary material is not too small and the effect is insufficient, and the amount is too large to cause adverse effects, so that the optimal addition amount can be set.
- the invention according to claim 8 is the soldering iron tip according to claim 6 or 7, wherein the sintering auxiliary material includes a second sintering auxiliary material, and the second sintering auxiliary material includes vanadium particles and niobium. Particles, tantalum particles, chromium particles, molybdenum particles, and tungsten particles.
- carbon used as the first sintering aid improves the erosion resistance while relatively easily reducing the solder wettability of the iron tip. Therefore, if too much carbon cannot be used to ensure solder wettability, it is effective to use a second sintering aid as a means to further increase erosion resistance.
- the content of the second sintering auxiliary material in the sintered metal particles is 0.01% to 5% (claim 9).
- the second sintering auxiliary material does not have too little effect and the effect is insufficient, and there is no possibility that the amount of the second sintering auxiliary material is too large to significantly reduce the solder wettability. it can.
- the metal particle sintered body is covered on a tip end of the iron tip core material. It has a cap shape, and its thickness is 200 to 800 m.
- soldering can be performed easily and in a short time by simply covering the tip of the iron made of the cap-shaped metal particle sintered body on the tip of the core of the iron tip and then joining it by brazing or the like. Iron tip can be manufactured.
- the thickness of the metal particle sintered body is as thin as 200 to 800 im, even if it is used as the tip of the iron without any additional processing, the thermal conductivity from the iron core to the solder Can be secured sufficiently.
- the invention of claim 11 is the soldering iron tip according to any one of claims 1 to 10, wherein the density of the metal particle sintered body is 95% or more. With such a high-density sintered metal particle body, erosion resistance can be further improved.
- a method for producing a metal particle sintered body having a high density of 95% or more it is preferable to form a compact by an injection molding method described later.
- solderability an electric soldering iron or an electric solder provided with a soldering iron tip that enhances the erosion resistance of lead-free solder and improves solderability and solder removal (hereinafter referred to as solderability).
- a desoldering iron (hereinafter referred to as an electric soldering iron) is one in which the soldering iron tip is directly fixed to the main body, extending the life of the main body and being replaceably attached to the main body (claims 13 and 14). Can extend the exchange cycle. In addition, work efficiency can be improved due to high solderability.
- a heating section such as a heater may be provided on the main body side.However, the soldering iron tip is connected to the iron tip end member via the iron tip core material.
- a heating element for electrically heating may be provided (claim 12).
- the characteristics of the heating element for example, heater capacity
- the characteristics of the heating element that are optimal for the shape, size, and application of the soldering iron tip can be applied to each soldering iron tip, further improving work efficiency. Can be improved.
- the invention according to claim 15 is a method for manufacturing a soldering iron tip according to any one of claims 2 to 12, wherein the sintered base according to any one of claims 2 to 9 is provided.
- the material, or the sintering base material and the sintering auxiliary material are kneaded with a binder and formed into a shape that is substantially the same as the iron tip member or a shape that includes the iron tip member by pressure molding.
- the green compact was fired in a non-oxidizing atmosphere at 800 to 130 ° C. to form a metal tip sintered iron tip member. It is characterized in that the member is joined to the tip of a core material made of copper or a copper alloy.
- a soldering iron tip can be easily manufactured simply by joining it to the tip of the material by brazing or the like.
- the invention according to claim 16 is the method for manufacturing a soldering iron tip according to claim 15, wherein the sintered metal particle sintered body is further subjected to a preform forging method at a temperature of 300 to 50 or It is characterized in that it is given a shape by a powder forging method to form an iron tip member. By doing so, the fine pores between the particles of the metal particle sintered body can be shrunk and the density can be reduced, and high erosion resistance can be obtained.
- An invention according to claim 17 is a method for manufacturing a soldering iron tip according to any one of claims 2 to 12, wherein the sintered base according to any one of claims 2 to 9 is provided.
- the material, or the sintering base material and the sintering auxiliary material are kneaded with a binder and formed into a shape that is substantially the same as the iron tip member or a shape that includes the iron tip member by pressure molding.
- the green compact is brought into close contact with the tip of the iron or iron core made of copper or copper alloy. While maintaining the state of adhesion, the melting point of the iron or more is 800 ° C or more.
- an iron tip member made of sintered metal particles is formed, and at the same time, the iron tip member is joined to the tip of the iron core. .
- the invention of claim 18 is the method for manufacturing a soldering iron tip according to any one of claims 15 to 17, wherein an injection molding method is used instead of the pressure molding method. I do.
- a metal powder injection molding method As such a metal powder injection molding method, a known MIM (Metal Injection Molding) method is suitable. According to the MIM method, the degree of freedom in shape can be increased and high-precision molding can be performed. For example, even with a tip end member in the form of a thin cap having a wall thickness of about 200 to 800 m (see claim 10), a sintered metal particle having the same shape as the finished product can be obtained. it can. In other words, since additional machining can be omitted, productivity can be improved; and costs can be reduced.
- MIM Metal Injection Molding
- a high-density sintered metal particle can be obtained using small-diameter particles.
- the die pressing method has a density of 90% or less using particles of about 80 z / m, while the MIM method has a density of 95% or more using particles of 10 m or less (for example, 96%). ⁇ 99%) density Can be realized (see claim 11).
- an organic binder is usually used for molding to promote dispersion and impart fluidity suitable for injection molding.
- this binder is difficult to completely remove in the removal step (usually heated to about 400 to 600 ° C. after molding) and in the baking step, and tends to remain in the sintered metal particles.
- the remaining binder may react with oxygen in the air to form carbides and the like, which may lead to a decrease in solderability and the like.
- the invention of claim 19 is a method for manufacturing a soldering iron tip according to any one of claims 15 to 17, wherein, instead of the pressure molding method, without kneading with a binder, It is characterized in that a method of powder compression molding of only metal particles is used.
- a method of powder compression molding of only metal particles is used.
- the binder since the binder is not used, it is possible to reliably prevent the above-mentioned decrease in solderability. Further, since there is no need to remove the binder, it is possible to reliably prevent defects such as blisters, cracks,ry, and deformation occurring in the removal process.
- a well-known RIP (Rubber Isostatic Pressing) method is suitable as a powder compression molding method without using a binder.
- the RIP method is a powder molding method in which powder is filled into a cavity of a rubber mold, and the powder is compression-molded together with a rubber mold using an upper punch and a lower punch. When the powder is compressed, it is compressed not only in the axial direction of the press but also in the lateral direction due to the deformation of the rubber mold. No binder or mold lubricant is required during molding, and the shape and size have a high degree of freedom, enabling molding with high dimensional accuracy.
- the invention according to claim 20 is a method for manufacturing a soldering iron tip according to any one of claims 15 to 19, wherein the sintering temperature is equal to or higher than the melting point of the sintering auxiliary material. Method.
- a high-density sintered metal particle can be obtained while sintering at a relatively low temperature.
- particles with a low melting point melt during the sintering process and fill the gaps between metal particles, so that high-density sintered metal particles can be obtained and excellent soldering Properties or solder removal properties.
- sintering is performed at a relatively low temperature, which can contribute to labor saving.
- An invention according to claim 21 is a method for manufacturing a soldering iron tip according to any one of claims 2 to 12, wherein the sintered base according to any one of claims 2 to 9 is provided.
- a material or a sintered base material and a sintering auxiliary material are formed and fired by a process including cold isostatic pressing or hot isostatic pressing to form the metal particle sintered body,
- the metal particle sintered body is plastically processed into a rod shape or a linear shape, and further machined to form a tip end member, and the tip end member is joined to a tip end portion of a tip end material made of copper or a copper alloy. It is characterized.
- the fine pores between the particles of the metal particle sintered body can be shrunk to increase the density, and high erosion resistance can be obtained.
- the invention of claim 22 is a method for manufacturing a soldering iron tip according to any one of claims 15 to 21, wherein the particles used as the sintering base material and the sintering auxiliary material are Among them, alloy particles obtained by alloying at least two or more kinds of particles by a melting method or a mechanical alloying method are used.
- the mechanical alloying method is a known method for producing an alloy powder using a machine such as a pole mill without melting a metal. Since mechanical alloying is performed at room temperature, alloy particles can be easily produced even between metals having a large difference in melting point.
- the invention of claim 23 is the method for manufacturing a soldering iron tip according to any one of claims 15 to 22, wherein the sintering base material, the sintering auxiliary material, or the alloy particles are: It is characterized in that particles having a particle diameter of 200 zm or less are used.
- the density of the sintered metal particles can be increased, and the soldering property or the solder removing property, and the erosion resistance of the soldering tip used for soldering can be improved. Performance can be improved. It is more preferable that the particle size is smaller than 50 im or less (claim 24), or even smaller than 10 m or less (claim 25).
- iron particles of 10 m or less are suitable as the carbonyl iron powder, and are also suitable for performing the MIM method.
- ultrafine particles so-called nanoparticles
- a further reduced particle size claim 26
- FIG. 1 is a partial front view of an electric soldering iron according to the first embodiment of the present invention.
- FIG. 2 is an exploded perspective view of FIG.
- FIG. 3 is a cross-sectional view of the iron tip according to the first embodiment of the present invention.
- FIG. 4 is an exploded perspective view of FIG.
- FIG. 5 is a component table of particles used when producing a metal particle sintered body.
- FIG. 6 is a process chart for manufacturing a soldering iron tip.
- FIG. 7 is an exploded perspective view of a modified example of the iron tip of the first embodiment.
- FIG. 8 is a process chart for manufacturing a soldering iron tip.
- FIG. 9 is a partial perspective view of a modification of the iron tip of the first embodiment.
- FIG. 10 is a schematic sectional view showing the mechanism of liquid phase sintering.
- FIG. 11 is a partial cross-sectional view of a modified example of the iron tip of the first embodiment.
- FIG. 12 is a perspective view of a modified example of the iron tip of the first embodiment.
- FIG. 13 is an explanatory diagram showing a test procedure of the wetting spread test.
- FIG. 14 is a graph showing the test results of the wetting spread test.
- FIG. 15 is an explanatory diagram showing the test procedure of the life test.
- Figure 16 is a graph showing the test results of the life test.
- FIG. 17 is a partial cross-sectional view of the electric soldering iron according to the second embodiment of the present invention.
- FIG. 18 is an enlarged cross-sectional view near the suction nozzle of the second embodiment.
- FIG. 1 is a front view of the vicinity of the tip of the electric soldering iron 1
- FIG. 2 is an exploded perspective view thereof.
- the tip of the electric soldering iron 1 is provided with an iron tip 2 (corresponding to a soldering iron tip) that is stored in the protective pipe 3 and has a conical tip protruding from the protective pipe 3.
- the protective pipe 3 is fixed to the nipple 6 of the electric soldering iron 1 by a bag nut 4.
- a recess 11 (see FIG. 3) is provided inside the cylindrical body of the iron tip 2 covered with the protective pipe 3.
- the ceramic heater 5 protruding from the main body 7 of the electric soldering iron 1 is fitted into the recess 11.
- the ceramic heater 5 is a heating element that generates heat when a power switch (not shown) is turned on.
- the ceramic heater 5 maintains a predetermined temperature range that can be adjusted by a thermostat mechanism (not shown).
- FIG. 3 is a cross-sectional view of the iron tip 2 in FIG. 2 taken along the line II.
- FIG. 4 is an exploded perspective view of the tip of the iron tip 2.
- the iron tip 2 is mainly composed of an iron core 10 having a cylindrical body and a conical tip, and an iron tip 20 brazed to the tip.
- the material of the iron core 10 is copper or a copper alloy that has high thermal conductivity and electrical conductivity and is relatively inexpensive.
- the outer exposed portion of the iron core 10 has a thin chrome coating.
- the iron tip member 20 is a part whose surface is in direct contact with the solder and melts the solder. In a normal use mode, the tip of the iron tip member 20 is covered with the solder layer 8.
- the iron tip member 20 is mainly composed of iron, and selectively contains nickel, cobalt, copper, silver, tin, boron, carbon, vanadium, niobium, tantalum, chromium, molybdenum, and tungsten. It is a member containing at a content rate, and is made of a sintered metal particle manufactured by powder metallurgy. Its composition and manufacturing method will be described later in detail. Further, the shape of the iron tip member 20 may be various forms according to the manufacturing method. These modifications will be described later.
- the electric soldering iron 1 turns on the power switch (not shown).
- the ceramic heater 5 generates heat.
- the heat is quickly and efficiently transmitted from the concave portion 11 of the iron tip 2 to the surface of the iron tip member 20.
- the solder layer 8 of the iron tip member 20 when the temperature of the solder exceeds the melting point, the hang is melted and soldering is performed together with newly supplied solder.
- the molten solder layer 8 serves as a medium for heat during soldering, and supplies heat to the soldered portion. Soldering can be performed.
- the solder wettability is high.
- this solder wettability is important for obtaining good soldering. Nature. If the iron tip member 20 does not have solder wettability, the path for supplying heat to the soldering part is only the point of contact with the iron tip member 20, and heat transfer is extremely deteriorated, and good soldering is achieved. This is because it cannot be obtained.
- solder erosion phenomenon occurs. It is desirable that this amount of erosion be small, but it increases as the temperature increases, so that lead-free solder with a high melting point is 3] 1—? It is more disadvantageous condition than 13 series solder. In addition, even at the same temperature, lead-free solder generally has a higher amount of erosion due to its higher tin content than Sn-Pb-based solder. Since the iron tip member 20 has a sufficiently large thickness as compared with the conventional iron plating, the erosion resistance and the life are greatly improved. However, if the thickness is too large, the amount of decrease in the thermal conductivity becomes large, so that about 200 to 800 / m is preferable.
- FIG. 5 is a component table showing the mass distribution (%) of the particles used when manufacturing the metal particle sintered body as the iron tip member 20.
- the vertical axis of the table indicates the type assigned to each combination of particles.
- 16 types are listed, but other suitable combinations may be made within the scope of the claims.
- the abscissa indicates the type of particles used, and consequently the components of the sintered metal particles.
- the types of particles are broadly classified into sintering base materials and sintering auxiliary materials, and sintering auxiliary materials are further classified into first auxiliary materials and second auxiliary materials.
- As the particles of the sintering substrate at least one or more of iron (Fe), nickel (Ni) and cobalt (Co) are selected.
- Types 13 to 15 consist only of a sintered substrate.
- Types 1 to 12 include copper (Cu), silver (Ag), tin (Sn), and boron as particles of the first sintering aid in addition to the sintering base material.
- Type 16 has vanadium added to each of the components of types 1 to 15 as particles of the second sintering aid.
- At least one of (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo) and tungsten (W) is selected and added.
- the upper part of each column of types 1 to 15 shows the mass% of each particle with respect to all the particles used, and the lower parenthesis shows a suitable range (partially omitted).
- type 3 has a distribution of Fe-5.5Cu-1.3% Ag.
- the preferred ranges of each component are Cu: 1 to 10%, Ag: 0.5 to 2%, and the balance is Fe.
- the other types of notations are in accordance with this.
- the use amount of these particles may be determined within a suitable range of each particle, but when a sintering auxiliary material is used, the total of the sintered base material is in the range of 55 to 99.99%, The total of the first sintering auxiliary material is adjusted within the range of 0.01% to 40%, and the total of the second sintering auxiliary material is adjusted within the range of 0.01% to 5%.
- type 4 sintering aids may be determined within the range of Cti: 10-38% and Ag: 2-20%, but are adjusted so that the total does not exceed 40%.
- Fe particles of the sintered substrate are the main components because Fe excels in the corrosion resistance of solder.
- Fe particles are used for all types 1 to 16, and in particular, only Fe particles are used for evening 13.
- impurities of Fe have an adverse effect on solderability, so that Fe particles having high purity are desirable.
- iron powder having a purity of 99.5% or more (which can be obtained by a known electrolysis method or electroluponyl method) is preferable.
- the purity of the Fe particles it is possible to prevent a decrease in heat and electric conductivity, prevent deterioration of solderability, and increase the density of the sintered metal particles.
- the Fe particles contain a large amount of impurities such as carbon (C), oxygen ( ⁇ ), nitrogen (N) or hydrogen (H), the relative density of the sintered metal particles becomes 90% or less, Using high-purity iron powder can increase it to over 96%.
- Ni particles and Co particles are appropriately selected as the sintering base material.
- Ni and Co are Fe groups belonging to the Vin group of the periodic table. Therefore, Ni $ particles and Co particles have properties similar to those of Fe particles, and can be used as an alternative substrate for Fe.
- Ni particles and Co particles exhibit superior properties to those using Fe particles alone. 1 ⁇ 1 particles are used for types 6, 7, 9, 11, 12, 14, and 15, Co particles are used for types 8, 9, and 14, and both are used for evenings 9 and 14. I have.
- Fe-Ni sintered alloys using Fe particles and Ni particles as the sintering base material have improved solderability compared to sintered products using only Fe (see the wetting spread test described later).
- the addition amount of Ni particles is preferably 50% or less. If it exceeds 50%, erosion resistance decreases and solder erosion proceeds rapidly.
- a Fe_Co sintered alloy using Fe particles and Co particles as a sintering base material has an effect of promoting sinterability and suppressing hang erosion.
- the addition amount of Co particles is preferably 20% or less. If it exceeds 20%, the solderability will be reduced and the cost will increase.
- Liquid phase sintering (in the case of Cu) is a method in which the sintering temperature is set to 1083 or higher, the melting point of Cu, and the Cu is liquefied during the sintering process, as described later.
- An appropriate amount of Cu particles added is 1 to 10% .If less than 1%, the effect is small.If it exceeds 10%, the molded product is deformed due to local melting of Cu particles during liquid phase sintering. It will be easier.
- a Fe_Cu sintered alloy containing 10% or more of Cu particles may be used (Type 4).
- the sintering temperature should be lower than the melting point of Cu for the above-mentioned reason.
- the erosion resistance is slightly reduced, but the thermal conductivity and the solderability are improved. Therefore, it is suitable for a case where solderability is more important than erosion resistance.
- Fe-Cu sintered alloys with a large amount of Cu particles are characterized by less decrease in thermal conductivity than Fe-Cu alloys by the melting method. For example, while the electrical conductivity of the Fe-50% Cu alloy by the melting method is less than 20% ACS, this Fe-Cu sintered alloy shows a high electrical conductivity of 50% ACS. This relationship is proportional to the thermal conductivity.
- the added amount of Cu particles is desirably 40% or less. If it exceeds 40%, the erosion resistance decreases and the erosion of the solder proceeds rapidly.
- the melting point of Ag is 960 ° C, which is lower than the melting point of Cu, so it is even lower than when only Cu particles are used
- a high density Fe-Ag sintered alloy can be obtained by liquid phase sintering.
- low melting point particles of Ag-28% Cu (eutectic temperature of 780 ° C) may be used for the Fe_Cu sintered alloy (type 4) containing a large amount of Cu particles.
- the addition amount of 88 particles or 8-111 particles is preferably 0.5 to 20%, and if it exceeds 20%, the cost will increase significantly.
- Sn particles are used as the first sintering aid (type 5), solderability is improved, and since the melting point of Sn is as low as 230, liquid phase sintering can be performed at even lower temperatures. You. As with type 5, simultaneous addition of Cu and Ag particles is effective for the addition of Sn $ particles. The addition amount of S n particles preferably 5% or less, weakening the metal particle sintered body by F e S n 2 compounds such as generation exceeds it.
- B particles are used as the first sintering aid (type 6), B exhibits an interstitial diffusion form with the Fe group element and promotes mutual diffusion between solids, so relatively low temperature of 1100 ° C or less Enables sintering.
- the addition of a small amount of B particles has the characteristic of hardly deteriorating the solderability, and the addition amount is preferably 0.01% to 1%. If it is less than this, the effect is small, and if it exceeds this, the solderability is likely to be reduced.
- alloy particles containing B such as Fe—B particles, Ni—B particles, or Cu—B particles, may be added.
- C particles of about 0.5 (or 0.8)% are used as the first sintering aid (types 10 to 12), the erosion resistance of the iron tip 2 is significantly improved, and the life is greatly improved. Can be extended.
- the second sintering auxiliary material When at least one of vanadium particles, niobium particles, tantalum particles, chromium particles, molybdenum particles, and tungsten particles is used as the second sintering auxiliary material, the high melting point particles are dispersed in the sintered body matrix. Therefore, it is possible to expect remarkable erosion resistance, and it is possible to greatly extend the life of the iron tip. If too much carbon cannot be used to ensure solder wettability, it is effective to use a second sintering aid as a means of further increasing erosion resistance.
- the metal particles used for the above sintering base material and sintering auxiliary material have a particle size of 200 m or less, preferably 50 zm or less, more preferably 10 m or less, and more preferably ultrafine particles ( So-called nanoparticles) are preferred.
- the metal particles having such a small particle diameter the density of the metal particle sintered body can be increased, and the hangability and the erosion resistance can be improved.
- FIG. 6 is a process chart for manufacturing the iron tip 2.
- step P1 the sintering base material, the sintering aid, and the binder (additive) are kneaded with a mixer.
- step P2 the powder is pressed and formed by press molding or MIM (metal powder injection molding) to form a green compact (shaping). Its shape is substantially the same as that of the iron tip member 20. Thereafter, the green compact is removed from the mold, and the process proceeds to step P3.
- MIM metal powder injection molding
- step P4 firing and sintering are performed in a non-oxidizing atmosphere at a predetermined temperature (800 to 130 ° C.) to form a sintered metal particle.
- machining for adjusting the joint with the iron core 10 is performed to complete the iron tip member 20.
- step P5 the iron tip member 20 is joined to the tip of the iron tip core material 10 by brazing.
- the soldering is performed at 65 to 85 ° C. using silver brazing of BA g — 7 or BA g—8. In addition to brazing, pressure welding or the like may be used for joining.
- finish processing for adjusting the dimensional accuracy is performed in process P6, and iron tip 2 is completed.
- the powder metallurgy method of manufacturing the iron tip member 20 by sintering has a high degree of freedom in shape provision and can be manufactured in a shape close to the completed shape, so that the cutting process can be shortened or omitted. it can. Also, unlike the melting method, there is no need to raise the temperature to the melting point of Fe, which saves energy consumption and reduces the environmental burden. Also, since there is no need for drainage treatment as in the case of using conventional iron plating, adverse effects on the environment are reduced, and labor saving and mass production are enabled.
- the degree of freedom in shape can be increased, and high-precision molding can be performed.
- an iron tip member 20 having a wall thickness of about 200 to 800 m can be molded with high precision to obtain a metal particle sintered body having the same shape as a finished product.
- productivity can be improved and costs can be reduced.
- a high-density sintered metal particle can be obtained using small-diameter particles.
- a density of 96 to 99% can be achieved by using particles of 10 m or less (electric field iron powder or carbonyl iron powder is preferable).
- FIG. 7 is an exploded perspective view of an iron tip 2e suitable for molding by the MIM method.
- the tip of the iron tip core material 100e is shaped like a knife edge, and the iron tip tip 20e has a cap shape (thickness of 200 to 800) covered by the tip.
- a thin product having sharp corners and deep recesses can be formed in a finished product shape. In other words, additional machining can be omitted, Productivity can be improved and costs can be reduced.
- step P1 in Fig. 6 the sintering base material, sintering auxiliary material, and binder are kneaded, but a binder is used, for example, by applying a known RIP (Rubber Isostatic Pressing) method. It may not be done.
- the RIP method is a powder molding method in which powder is filled in a cavity of a rubber mold and the powder is compression-molded together with a rubber mold using an upper punch and a lower punch. When the powder is compressed, it is compressed not only in the axial direction of the press but also in the lateral direction due to the deformation of the rubber mold.
- FIG. 8 is a process diagram for manufacturing the iron tip 2a shown in FIG. 9 by simultaneously performing sintering and joining to the iron core.
- process P11 the sintering base material, the sintering auxiliary material and the binder are kneaded with a mixer.
- pressure molding is performed by a press molding method, a MIM method, or the like to form a green compact (shaping).
- the shape is a columnar shape substantially the same as the metal particle sintered body 21a in FIG. 9 (a).
- the green compact is removed from the mold and brought into close contact with the tip of the iron core 10a.
- a predetermined temperature 800 or more and the melting point of the iron core made of copper or a copper alloy
- firing and sintering are performed to form a sintered metal particle 21a and, at the same time, to join the iron core 10a (the state shown in Fig. 9 (a)).
- finish processing for adjusting the dimensional accuracy is performed in step P14 to complete the iron tip 2 (the state shown in FIG. 9 (b)).
- the pressure molding method has a higher density of the green compact, and The density of the sintered metal particles can be increased. And if liquid phase sintering is used, higher density Can be obtained.
- the liquid phase sintering method uses particles with relatively low melting points (Cu particles, Ag particles, eutectic particles of Ag-28% Cu (eutectic temperature 780 ° C), Sn particles, etc.) as sintering aids. In this method, sintering is performed at a temperature equal to or higher than these melting points.
- FIG. 10 is a schematic sectional view showing the mechanism of liquid phase sintering.
- FIG. 10 (a) shows a state before pressurization in step P2 of FIG. 6 or step P12 of FIG. As shown in this figure, before pressing, particles 32 of the sintering aid are dispersed and mixed with particles 31 of the sintering base material, and relatively large voids 33 are formed.
- FIG. 10 (b) shows the state after pressure molding in step P2 or step P12. As shown in this figure, after pressing, the particles 31 of the sintering base material and the particles 32 of the sintering aid are flattened by plastic deformation, and the particles adhere to each other, but small gaps 33 remain. .
- FIG. 10 (c) shows a state after performing liquid phase sintering in step P3 in FIG. 6 or step P13 in FIG.
- the particles 31 of the sintering base material grow by recrystallization, and the voids are filled with particles 32 of the sintering auxiliary material, so that the denseness is improved.
- the sintering aid particles 32 melt at the sintering temperature, causing a wetting phenomenon to the sintering base particles 31, and at the same time voids 33 due to interfacial tension This is done by filling with the liquid.
- the liquid phase sintering method can obtain such a high-density metal particle sintered body, and can perform sintering at a relatively low temperature compared to the case where it is not used. Can contribute.
- the sintered metal particle body after firing may be further shaped at a temperature of 300 to 500 ° C. by a preform forging method or a powder forging method to be used as a tip end member. Since these methods are generally known, detailed description will be omitted. However, by using these methods, fine pores between particles can be shrunk to increase the density.
- forming and firing may be performed by a process including cold isostatic pressing (CIP) or hot isostatic pressing (HIP). These are also commonly known methods Although the detailed description is omitted, when these methods are used, the metal particle sintered body is plastically worked into a rod shape or a linear shape, and is further machined to form the iron tip member 20.
- FIGS. 11 (a) and 11 (b) are cross-sectional views of the tip of the tip of the iron thus obtained.
- the tip 2b, 2c of the iron tip is obtained by joining the tip 2ob, 20c of the iron tip obtained by the CIP or HIP to the tip of the iron core 10b, 10c by brazing.
- FIG. 12 is an exploded perspective view of the iron tip 2d when the two-layer sintering method is used.
- the iron tip member 20d is composed of a first layer 22 and a second layer 23.
- the first layer 22 is formed by mixing the sintering base material and the sintering auxiliary material
- the second layer 23 is formed by sintering using Cu particles or Cu—Cr particles.
- the iron tip member 20d is a two-layer metal particle sintered body as described above, and can be directly shaped, and the metal particle sintered body 21a shown in FIG. After making such a sintered body, the iron tip member 20d shown in FIG. 12 can be formed by machining. And this is brazed to the iron core 10d made of a copper pipe to obtain the iron tip 2d.
- the use of copper pipes for the iron core 10d eliminates the need for internal processing and saves labor.
- FIG. 13 is an explanatory diagram showing the test procedure of the wetting spread test.
- the test piece 90 is a 15.8 mm ⁇ 21.4 mm ⁇ 1.0 mm thick metal particle sintered body.
- Dilution flux 92 is a flux (HAKKO 001 (trade name) used) diluted 10-fold with isopropanol.
- the yarn solder 94 to be melted is made of Sn-3.0 Ag-0.5 Cu of ⁇ lmm ⁇ 40 mm, and is wound around a round bar of ⁇ 40 mm in advance and crimped.
- the test was performed as follows. 20 diluted flux 92 on test piece 90 1Drip, and place thread solder 94 on it. In this state, the solder was heated to 300 to 410 ° C and the solder was melted for 30 seconds. After cooling, the spread area of the yarn solder 94 was measured. The larger the spread area, the higher the solder wettability, that is, the better the solderability.
- the following table is a composition table of seven types of test pieces 90 (samples 101 to 107).
- Sample 101 is a plate of the Fe plating layer prepared by the above method for comparison.
- Samples 102 to 107 are obtained by molding particles of the components shown in the table by the MIM method and firing the particles. Samples 102 to 107 correspond to types 10, 12, 11, 13, 15, and 1 shown in FIG. 5 in this order.
- Samples 102 to 104 are made of carbon steel iron powder commonly used in the MIM method.
- FIG. 14 is a graph showing the results of the wetting spread test.
- the horizontal axis shows the temperature (° C), and the vertical axis shows the spread area (mm 2 ) of the molten solder.
- the spread area of sample 10 1 (Fe plating) (66.9 mm 2 at 360) (* Fe-5Cu) had the largest spreading area, followed by sample 106 (* Fe_10Ni) and sample 104 (Fe-42Ni-0.5C) in that order.
- Sample 103 (F e—8N i—0.5 C) and sample 105 (* F e) were almost equivalent to sample 101, and sample 102 (Fe ⁇ 0.5 C) had some disadvantageous results.
- the evaluation was performed by an erosion test.
- the erosion test was performed on Sample 104, Sample 106, and Sample 107, which were effective in the wetting spread test. These samples were formed into the shape of the iron tip member 20 shown in FIG. 3 by the MIM method, fired, and brazed to the iron core 10 to produce the iron tip 2 shown in FIG. .
- Iron tip 2 (Sample 101) was also fabricated by Fe plating for comparison.
- FIG 15 schematically illustrates the test equipment for the erosion test.
- the apparatus is composed of an electric soldering iron 1 to which each iron tip 2 manufactured as described above is mounted, and a solder feeder 96 for supplying solder thereto. From the tip of the solder feeder 96, the thread solder 98 (using the same Sn-3.0 Ag-0.5 Cu of ⁇ lmm as in the wetting spread test) is automatically sent in the direction of the arrow. I have.
- the electric soldering iron 1 is fixed at an angle of 30 ° with respect to a plane perpendicular to the feeding direction of the thread solder 98.
- the tip angle of the iron tip 2 is 18 °.
- FIG. 16 is a graph showing the results of the erosion test. The vertical axis indicates the erosion amount (urn) of the tip 2 of the iron. Sample 106 (* Fe-10Ni) had almost the same amount of erosion as sample 101 (Fe plating). Sample 104 (Fe-4Ni-0.5C) and Sample 107 (* Fe-5Cu) had higher erosion rates.
- sample 106 (* Fe-10Ni) can significantly improve the solderability while maintaining the same erosion resistance as before. Therefore, the iron tip 2 including the sample 106 can improve the solderability without lowering the erosion resistance.
- the solderability and the erosion resistance can be adjusted by changing the ratio of each component. Although not included in the above tests, it is also possible to improve the erosion resistance without reducing the solderability by adjusting the components.
- Sample 106 was slightly harder than Sample 101, and Samples 104 and 107 were about 80% harder than Sample 101. From the above results, it was confirmed that Pickers hardness had a large correlation with erosion resistance, and that the higher the hardness, the higher the erosion resistance. Sample 106 (* F e- 1 ON i) was confirmed to be suitable as co ⁇ 1 tip member 2 0 in terms of Vickers hardness.
- FIG. 17 is a partial sectional view of an electric solder suction iron 60.
- a tank 64 removably fitted between a front holder 65 and a rear holder 66 is provided at the upper part of the main body case 61.
- the tank 64 is a cylindrical body made of a transparent material such as heat-resistant glass so as to be observable from the outside, and stores the sucked molten solder.
- a filter 68 made of glass wool is provided at the rear end of the tank 64, and communicates with the rear holder 66 via the filter 68.
- a vacuum tube 63 is connected to the rear holder 66 so that the inside of the tank 64 can be depressurized by a vacuum pump (not shown).
- the rear end of the transport pipe 79 communicating with the tank 6 is inserted into the front holder 65.
- the transport pipe 79 is made of stainless steel.
- a copper heating core 70 having an inner hole through which a transport pipe 79 penetrates, a ceramic heater 71 provided therein, and an outer periphery of the heating core 70 are provided.
- It consists of a protective pipe 72 that covers the surface and a suction nozzle 51 that directly contacts, melts and sucks the solder (corresponding to a soldering iron tip).
- a screw 75 is formed at the front end of the heating core 70, and a female screw 58 is formed at the rear end of the P and take-up nozzle 51 to screw the suction nozzle 51 into and out. It is exchangeable.
- a through hole 55 (see FIG. 18) is provided at the tip of the suction nozzle 51 and communicates with the transport pipe 79.
- the ceramic heater 71 is connected to a power cord (not shown) via a lead wire 62.
- FIG. 18 is an enlarged sectional view of the vicinity of the suction nozzle 51 in FIG.
- the suction nozzle 51 is composed of an iron core 52 made of copper or a copper alloy, and an iron tip member 53 provided at the tip and made of a sintered metal particle.
- a through hole 55 is formed inside the iron tip member 53, and the tip is open to the outside to serve as a suction port 54 for sucking molten solder, and the rear end is connected to the transport pipe 79.
- the outer peripheral surface of the tip of the suction nozzle of the conventional electric solder suction iron has been iron-plated, and an iron pipe for forming a through hole has been inserted therein.
- the iron tip is not required only by providing the iron tip member 53 at the tip of the suction nozzle 51, thereby improving productivity and discharging environmental pollutants. Is reduced.
- the suction nozzle 51 ensures solder wettability and has an erosion resistance against lead-free solder as compared with a conventional iron-plated product. High, can extend the life.
- the sintering component of the iron tip member 53 and the manufacturing method of the suction nozzle 51 are the same as those of the iron tip 2 of the first embodiment.
- the iron tip 2 shown in the first embodiment and the electric soldering iron 1 using the same, or the suction nozzle 51 shown in the second embodiment and the electric soldering iron 60 using the same, and their manufacture Although the method has been described, the present invention is not limited to the above, and may be appropriately modified within the scope of the claims.
- the components of the iron tip member 20 and the iron tip member 53 are not limited to those shown in FIG. 5 and the samples 102 to 107, and the type and application of the solder to be applied (corrosion resistance is important. Alternatively, it may be appropriately selected and adjusted according to solderability.
- the ceramic heater 5 provided in the electric soldering iron 1 and the ceramic heater 71 provided in the electric soldering iron 60 are fixed to the main body in each embodiment. It may be built-in and replaceable with them. This makes it possible to use a heater having optimum characteristics (such as heater capacity) according to the shape and heat capacity of the iron tip 2 and the suction nozzle 51.
- the particles used as the sintering base material and the sintering auxiliary material are not limited to those in which independent particles are mixed. Some or all of them may be alloyed and particles of the alloy may be used. For alloying, a melting method or a mechanical alloying (MA) method may be applied. Industrial applicability
- the soldering iron tip of the present invention is a metal particle sintered body manufactured by powder metallurgy at the tip of a soldering iron core made of copper or copper alloy. And a metal tip sintered body comprising at least one element of iron, nickel, and cobalt as a main component.
- the most suitable material for the tip of the iron can be easily obtained according to the type of hang. Emissions of environmental pollutants can be reduced.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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BRPI0316652-0A BRPI0316652B1 (pt) | 2002-11-26 | 2003-11-25 | Bico de ferro de solda elétrica ou um ferro de sucção de solda elétrica, e método de fabricação do mesmo |
AU2003284652A AU2003284652A1 (en) | 2002-11-26 | 2003-11-25 | Tip of soldering iron, process for producing the same, and electrical soldering iron and electrical solder sucking iron including the iron tip |
JP2004555018A JP4546833B2 (ja) | 2002-11-26 | 2003-11-25 | ハンダ取扱い用コテ先及びその製造方法、同コテ先を用いた電気ハンダゴテと電気ハンダ吸取りゴテ |
EP03774170.9A EP1586402B1 (en) | 2002-11-26 | 2003-11-25 | Tip of soldering iron, process for producing the same, and electrical soldering iron and electrical solder sucking iron including the iron tip |
Applications Claiming Priority (2)
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JP2002342823 | 2002-11-26 | ||
JP2002-342823 | 2002-11-26 |
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PCT/JP2003/014958 WO2004048024A1 (ja) | 2002-11-26 | 2003-11-25 | ハンダ取扱い用コテ先及びその製造方法、同コテ先を用いた電気ハンダゴテと電気ハンダ吸取りゴテ |
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US (3) | US7030339B2 (ja) |
EP (1) | EP1586402B1 (ja) |
JP (1) | JP4546833B2 (ja) |
CN (1) | CN100377821C (ja) |
AU (1) | AU2003284652A1 (ja) |
BR (1) | BRPI0316652B1 (ja) |
WO (1) | WO2004048024A1 (ja) |
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CN102653002A (zh) * | 2011-03-03 | 2012-09-05 | 湖南博云东方粉末冶金有限公司 | 多层复合硬质合金产品及其制造方法 |
JP2015060837A (ja) * | 2013-09-20 | 2015-03-30 | 白光株式会社 | ヒーターカートリッジ組品の製作方法およびヒーターカートリッジ組品 |
JP2018193609A (ja) * | 2017-03-29 | 2018-12-06 | ゼネラル・エレクトリック・カンパニイ | ハイブリッド物品、ハイブリッド物品を形成するための方法、および溶接のための方法 |
WO2022056805A1 (zh) * | 2020-09-16 | 2022-03-24 | 苏州研科星智能科技有限公司 | 一种矩阵式智能焊锡工业机器人装置 |
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US8237091B2 (en) | 2002-11-26 | 2012-08-07 | Hakko Corporation | Soldering iron with replaceable tip |
US20050011876A1 (en) * | 2002-11-26 | 2005-01-20 | Takashi Uetani | Soldering iron with replaceable tip cap |
US7134590B2 (en) * | 2004-03-16 | 2006-11-14 | Moon Gul Choi | Desoldering sheath |
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CN102653002A (zh) * | 2011-03-03 | 2012-09-05 | 湖南博云东方粉末冶金有限公司 | 多层复合硬质合金产品及其制造方法 |
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JP2018193609A (ja) * | 2017-03-29 | 2018-12-06 | ゼネラル・エレクトリック・カンパニイ | ハイブリッド物品、ハイブリッド物品を形成するための方法、および溶接のための方法 |
JP7051522B2 (ja) | 2017-03-29 | 2022-04-11 | ゼネラル・エレクトリック・カンパニイ | ハイブリッド物品、ハイブリッド物品を形成するための方法、および溶接のための方法 |
WO2022056805A1 (zh) * | 2020-09-16 | 2022-03-24 | 苏州研科星智能科技有限公司 | 一种矩阵式智能焊锡工业机器人装置 |
Also Published As
Publication number | Publication date |
---|---|
US20040226982A1 (en) | 2004-11-18 |
AU2003284652A1 (en) | 2004-06-18 |
BR0316652A (pt) | 2005-10-18 |
US20040226981A1 (en) | 2004-11-18 |
CN100377821C (zh) | 2008-04-02 |
US7030339B2 (en) | 2006-04-18 |
CN1717293A (zh) | 2006-01-04 |
EP1586402B1 (en) | 2014-02-12 |
US7490751B2 (en) | 2009-02-17 |
EP1586402A1 (en) | 2005-10-19 |
JPWO2004048024A1 (ja) | 2006-03-23 |
BRPI0316652B1 (pt) | 2015-07-28 |
US20040222206A1 (en) | 2004-11-11 |
JP4546833B2 (ja) | 2010-09-22 |
EP1586402A4 (en) | 2009-04-01 |
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