Production technique of solder tip

Abstract

The invention discloses a production technique of a solder tip. The production technique comprises the following steps: (1) manufacturing a copper mold blank, namely firstly straightening a copper material, cutting off the copper material after straightening is ended, and then lathing the head of the cut-off copper material on a lathe; (2) polishing and deoiling the copper mold blank in order to remove burrs from the lathed head; (3) preparing an iron plating solution and afterwards electroplating a layer of iron on the surface of the copper mold blank, wherein the thickness of the iron coating at a working part of the copper mold blank is 0.4mm to 0.5mm, and the thickness of the iron coating at a non-working part of the copper mold blank is 0.1mm to 0.15mm; (4) correcting the dimension of the copper mold blank on which the iron coatings are entirely plated, and polishing; (5) plating a layer of nickel coating on the surface of each iron coating, wherein the thickness of the nickel coating is 5 to 10 micrometers; (6) plating a layer of chromium coating on the surface of the non-working part of the nickel coating and plating a layer of tin coating on the working part of the nickel coating, wherein the chromium plating time is longer than or equal to 5min. The production technique of the solder tip has the advantages of improving the quality of the solder tip and prolonging the service life of the solder tip.

Description

technical field [0001] The invention relates to the technical field of electric soldering iron accessories, in particular to a production process of an electric soldering iron tip. Background technique [0002] The soldering iron tip is a supporting product of the electric soldering iron, which is integrated into one body. Soldering iron tip oil is called soldering iron tip or soldering tip. It is a supporting product of electric soldering iron and electric soldering station. The main material is copper, which is a consumable product. Each electric soldering iron manufacturer is equipped with different types of soldering iron tips, but the basic shapes are pointed, horseshoe, flat, and knife-edge. The head of each type of soldering iron tip is basically the same, the difference lies in the size of the body part of the soldering iron tip, so as to match with your own electric soldering iron and soldering station. [0003] The temperature of the working surface of the solder...

AI Technical Summary

Problems solved by technology

Due to the difference in thermal expansion coefficient between copper and the oxide film, the oxide film will also peel off during the repeated heating and cooling process of the soldering iron tip. If the peeled oxide film is doped in the solder joint, it will affect the quality of the weldment

[0004] Therefore, in order to solve the above problems, a variety of metal composite methods are often used in the production and processing of soldering iron tips at present, which improves the service life of the soldering iron tip, but the following problems still exist in the production process: the thickness of the coating is unreasonable, such as soldering iron The coating of the working part of the head is too thin, which is not wear-resistant and corrosion-resistant, while the non-working part is too thick, which affects the thermal conductivity; the configuration of the iron plating solution is unreasonable, the bonding strength between the coating and the copper substrate is low, and there are cracks in the coating. lead to poor coating quality