The soldering iron head is mainly composed of five metal materials of copper, iron, nickel, chromium and tin.

Copper: As a thermal conductor, it is the main component of the soldering iron tip. It accounts for about 85% of the material of the soldering iron tip. The thermal conductivity of copper is good, which is conducive to the rapid heating of the soldering iron tip. Good soldering iron tips are made of copper, but some manufacturers use brass. In order to reduce costs, they also reduce the soldering iron. Thermal conductivity of the head.

    Iron: The iron in the coating of the soldering iron tip plays an anti-corrosive role, which is a key factor affecting the service life of the soldering iron tip. The crystal structure of the iron-plated layer of the iron tip with good performance is fine and dense, with good corrosion resistance, long service life and good tin-dropping effect. The thickness of the iron coating in the soldering iron tip directly affects the performance of the electric soldering iron. The service life of the thin iron soldering iron will be shortened. You can use the method of increasing the thickness of the iron coating to extend the life of the soldering iron tip, but increasing the thickness of the iron coating will cause the soldering iron The thermal conductivity of the head is reduced, so the thickness of the iron coating should be moderate. Manufacturers with poor iron plating technology mainly rely on the thickness of the iron plating to control the service life of the soldering iron tip. Usually, the iron plating layer is thicker, the tin is not tinned, and the thinner is not durable.

    Nickel: Nickel in the coating of the soldering iron tip plays a role of rust prevention in the iron coating, and it is convenient for chrome plating behind.

    Chromium: The chromium in the coating of the soldering iron tip does not stick to tin, which mainly prevents tin from running towards the body of the soldering iron tip (soldering iron tip) when in use. Generally, the chrome plating time of the soldering iron head is above 5min, and the ordinary decorative chrome plating is around 1min.

    Tin: The tin in the coating of the soldering iron tip is on the head of the soldering iron tip and is the part where the tin sticks during use.

■ Production process of soldering iron tip
   

1. Straightening: The finished copper is usually bought in large rolls. At this time, it needs to be stretched and straightened. Straightening is the beginning of the production of soldering iron heads. Straightening requires very straight, otherwise it will have a great impact on the quality of the product.

    2. Cut off: cut into corresponding lengths according to different models

    3. Turning of the head: The precision of the lathe determines the appearance of the soldering iron head. In addition to the industry's general standards, the factory also accepts customers to order samples to customize products.

    4. Polishing and degreasing: polishing with a vibratory polishing machine to remove burrs from turning heads

    5. Iron plating: This is the key to the quality of the soldering iron tip. All the core technology of the soldering iron tip is here. In order to improve the quality, now it is no longer just iron plating, all are electroplated iron alloys, and the proportion of additives in the electroplating process is also an extremely important factor that determines the quality of the iron tip

    6. Correction: The material after iron plating will often be deformed and need to be corrected to the required size

    7. Polishing: service for electroplating appearance

    8. Top tin: pre-top tin is for the service of soldering iron tip

    9. Appearance electroplating: generally there are white chrome plating (displayed as silver-white), nickel-chromium plating (displayed as bright color), and black chrome plating (displayed as black). No matter what appearance, chromium is indispensable, the purpose is to prevent the tin from climbing.