CN111975157A - Oxidation-resistant corrosion-resistant soldering bit at high temperature and manufacturing method thereof - Google Patents

Abstract

The invention discloses an oxidation-resistant corrosion-resistant soldering bit at high temperature and a manufacturing method thereof, wherein the soldering bit comprises a soldering head and an installation pipe, one end of the installation pipe is detachably connected with the soldering head, the other end of the installation pipe is connected with a soldering iron core of an external electric soldering iron, the soldering head comprises an installation seat and a heating part arranged on the installation seat, the heating part is plated with an oxidation-resistant layer, the soldering head is made of alloy consisting of nickel, chromium and aluminum, and the soldering head is sequentially placed into nickel electroplating solution, aluminum electroplating solution and chromium electroplating solution at preset temperature to complete the plating work of the oxidation-resistant layer; the beneficial effects are that: the soldering bit manufactured by the invention has greatly improved oxidation resistance and corrosion resistance at high temperature, is not easy to oxidize, corrode and perforate, has good oxidation resistance layer to protect the soldering bit, and has long service life.

Description

Oxidation-resistant corrosion-resistant soldering bit at high temperature and manufacturing method thereof

Technical Field

The invention relates to the technical field of soldering bit production, in particular to a soldering bit with oxidation resistance and corrosion resistance at high temperature and a manufacturing method thereof.

Background

The soldering iron head is a key part in an electric soldering iron or a soldering station, is an important part influencing the soldering effect and the service life, and is in direct contact with tin materials and is always in a high-temperature state of 360-420 ℃ in the soldering operation. At present, the industry generally carries out the EU ROHS instruction, and after lead-free soldering tin is introduced, the working temperature is even as high as 420-480 ℃, so that higher requirements on the aspects of high temperature resistance, oxidation resistance and corrosion resistance of a soldering iron head are provided. The traditional method for producing the soldering bit in the industry is that a copper rod is machined to prepare a copper blank, a copper substrate is prepared through a machining process, then a series of electroplating treatments such as iron plating, nickel plating and chromium plating are carried out, and finally the soldering bit is prepared, wherein the quality of the soldering bit is directly influenced by the proportion and the thickness of a gold plating layer, the thickness of the gold plating layer is not well prepared, the poor heat conductivity, the unsmooth tin dropping and the sharp pulling of the soldering bit are caused, and the bad welding spot phenomena such as false soldering and false soldering are further formed; if the proportion of the gold plating layer is not good, the phenomenon that the soldering iron head is quickly oxidized and corroded in high-temperature work and even scrapped due to perforation and tip breakage can be caused. The production process increases the production cost, and meanwhile, the frequent replacement of the soldering bit reduces the working efficiency, thereby becoming a well-known problem in the industry.

Disclosure of Invention

The present invention is directed to a soldering iron tip that is resistant to oxidation and corrosion at high temperatures and a method for manufacturing the same, which solves the above-mentioned problems of the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a prevent oxidation corrosion resistant soldering bit and preparation method thereof under high temperature, includes soldered connection and installation pipe, the one end of installation pipe with the soldered connection can be dismantled, and the other end is connected with the flatiron core of outside electric iron, the soldered connection includes the mount pad and locates the portion that generates heat of mount pad, the portion that generates heat has plated the antioxidation layer.

As a preferable scheme of the present invention, the inner cavity wall of the mounting seat is provided with a threaded opening, one end of the mounting tube close to the mounting seat is provided with a connecting portion with a threaded opening, the threaded opening is connected to the connecting portion so that the mounting seat is fixedly connected to the mounting tube, and a heating cavity communicated with the inner cavity of the mounting seat is arranged in the heating portion.

As a preferable scheme of the invention, the depth of the heating cavity is one half of the length of the heating part, and the length of the welding head ranges from 18mm to 25 mm; the heating part is in a shape of a sharp mouth, a bent head or a knife edge.

As a preferable scheme of the invention, the welding head and the installation pipe are both made of nickel, chromium and aluminum.

As a preferable scheme of the invention, the welding head is formed by injecting molten liquid of which the raw materials comprise 85 percent of nickel, 10 percent of chromium and 5 percent of aluminum according to the weight percentage into a fixed mold cavity and cooling the molten liquid.

In a preferred embodiment of the present invention, the step of plating the anti-oxidation layer on the heat generating portion comprises:

step a, putting the welding head manufactured according to the claim 5 into a nickel electroplating solution with the temperature of 55-60 ℃ for 3-5 minutes;

b, putting the nickel-plated welding head into electroplating aluminum liquid at the temperature of 55-60 ℃ for 45 minutes;

c, putting the aluminum-plated welding head into a chromium electroplating solution at the temperature of 55-60 ℃ for 3-5 minutes;

d, repeating the steps twice;

and e, putting the welding head into the tin liquid with the temperature of 20-30 ℃, continuing for 2-3 minutes, and cooling to finish the process.

The beneficial effect of adopting above-mentioned technical scheme is: the soldering bit manufactured by the invention greatly improves the oxidation resistance and the corrosion resistance at high temperature, is not easy to oxidize, corrode and perforate, has good oxidation resistance layer to protect the soldering bit, and has long service life; in addition, the heating part is internally provided with a heating cavity, so that on one hand, materials are saved, and on the other hand, the heat conduction is quicker.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a soldering iron tip in accordance with the present invention; (ii) a

FIG. 2 is an exploded view of an exemplary embodiment of an uncoated oxidation resistant layer of a soldering tip;

FIG. 3 is a cross-sectional view of an embodiment of the tip of the soldering iron without plating an anti-oxidation layer.

In the figure, 1-heating part, 2-mounting seat, 3-mounting tube, 4-connecting part, 5-heating cavity, 6-inner cavity of mounting seat and 7-antioxidation layer.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

According to fig. 1 and 2, the present embodiment provides an anti-oxidation and corrosion-resistant soldering iron head at high temperature and a manufacturing method thereof, the soldering iron head includes a soldering head and a mounting tube 3, one end of the mounting tube 3 is detachably connected to the soldering head, the other end of the mounting tube 3 is connected to a soldering iron core of an external electric soldering iron, the soldering head includes a mounting base 2 and a heating portion 1 disposed on the mounting base 2, and the heating portion 1 is plated with an anti-oxidation layer 7.

The inner chamber wall of mount pad 2 is equipped with the screw thread mouth, and the one end that installation pipe 3 is close to mount pad 2 sets up connecting portion 4 that has the screw thread mouth, and the screw thread mouth is connected in connecting portion 4 and is made mount pad 2 be connected fixedly with installation pipe 3, is equipped with the chamber 5 that generates heat that communicates with the inner chamber of mount pad 2 in the portion 1 that generates heat.

The depth of the heating cavity 5 is one half of the length of the heating part 1, and the length range of the welding head is 18mm to 25 mm; the heating part 1 is in a shape of a sharp mouth, a bent head or a knife edge. The heating part 1 in the shape of a sharp mouth, a bent head or a knife edge is convenient for completing the soldering operation and is convenient to use.

The welding head and the installation pipe 3 are made of nickel, chromium and aluminum. The alloy installation pipe 3 and the welding head which are composed of the three metals are not easy to rust and corrode, wear-resistant, high-temperature resistant and long in service life.

The soldering iron core of the external electric soldering iron is connected to a mains supply to generate heat, the heat is transferred to the welding head to work, the mounting tube 3 can also serve as a handheld part of the soldering iron head, the soldering iron head is used for holding the mounting tube 3 by hand, and the outer tube wall of the mounting tube 3 is provided with anti-skid thin stripes; the connection of the installation tube 3 to the welding head is generally tightened with a tool and is thus more stable.

The welding head is formed by injecting molten liquid of 85% of nickel, 10% of chromium and 5% of aluminum into a fixed mold cavity and cooling. The injection molding of molds has long been a known technique, and the weights of various molten metals can be prepared according to the specific number of welding heads to be produced, but the weight proportions of the molten metals are necessarily fused according to the proportions, and the mixing sequence is not shown in sequence.

The step of plating the anti-oxidation layer 7 on the heating part 1 comprises the following steps:

step a, putting the welded joint subjected to injection molding and cooling into an electroplating nickel solution at the temperature of 55-60 ℃ for 3-5 minutes;

b, putting the nickel-plated welding head into electroplating aluminum liquid at the temperature of 55-60 ℃ for 45 minutes;

c, putting the aluminum-plated welding head into a chromium electroplating solution at the temperature of 55-60 ℃ for 3-5 minutes;

d, repeating the steps twice;

and e, putting the welding head into the tin liquid with the temperature of 20-30 ℃, continuing for 2-3 minutes, and cooling to finish the process.

All the steps are carried out only by putting the heating part 1 of the welding head into the electroplating solution, the mounting seat 2 is not required to be put, and the finished product is obtained by carrying out final grinding and polishing on the surface of the welding head.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (6)

1. The utility model provides a resist oxidation corrosion resistant soldering bit under high temperature, its characterized in that, includes soldered connection and installation pipe, the one end of installation pipe with the soldered connection can be dismantled, and the other end is connected with the flatiron core of outside electric iron, the soldered connection includes the mount pad and locates the portion of generating heat of mount pad, the antioxidation layer has been plated to the portion of generating heat.

2. The soldering iron tip resistant to oxidation and corrosion at high temperatures according to claim 1, wherein the inner cavity wall of the mounting base is provided with a threaded opening, one end of the mounting tube close to the mounting base is provided with a connecting portion with a threaded opening, the threaded opening is connected to the connecting portion so that the mounting base is fixedly connected with the mounting tube, and a heating cavity communicated with the inner cavity of the mounting base is arranged in the heating portion.

3. The oxidation and corrosion resistant soldering iron tip at high temperatures according to claim 1 wherein the depth of the heat generating cavity is one half the length of the heat generating portion and the length of the soldering tip ranges from 18mm to 25 mm; the heating part is in a shape of a sharp mouth, a bent head or a knife edge.

4. The oxidation and corrosion resistant soldering iron tip according to claim 1, wherein the soldering tip and the mounting tube are each comprised of nickel, chromium, and aluminum.

5. The method of making a soldering iron tip according to claim 1, wherein the soldering iron tip is formed by cooling a molten mass of 85% nickel, 10% chromium, and 5% aluminum by weight of the raw materials in a fixed mold cavity.

6. A method of making a soldering iron tip according to claim 1, wherein the step of plating the heat-generating portion with an anti-oxidation layer comprises:

step a, putting the welding head manufactured according to the claim 5 into a nickel electroplating solution with the temperature of 55-60 ℃ for 3-5 minutes;

b, putting the nickel-plated welding head into electroplating aluminum liquid at the temperature of 55-60 ℃ for 45 minutes;

c, putting the aluminum-plated welding head into a chromium electroplating solution at the temperature of 55-60 ℃ for 3-5 minutes;

d, repeating the steps twice;

and e, putting the welding head into the tin liquid with the temperature of 20-30 ℃, continuing for 2-3 minutes, and cooling to finish the process.

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