Metal material composition and production process of electric soldering iron tip
The soldering iron tip is mainly composed of five metal materials: copper, iron, nickel, chromium, and tin.
Copper: As a heat conductor, it is the main component of the soldering iron tip. It accounts for about 85% of the material of the soldering iron tip. Copper has good thermal conductivity, 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, it also reduces the temperature of the soldering iron. thermal conductivity of the head.
Iron: The iron in the coating of the soldering iron tip acts as an anti-corrosion agent, and it is a key factor affecting the service life of the soldering iron tip. The crystal structure of the iron plating layer of the soldering iron head with good performance is fine and dense, the corrosion resistance is good, the service life is long, and the tinning effect is good. The thickness of the iron coating in the soldering iron tip directly affects the performance of the soldering iron. The service life of the soldering iron will be shortened if the iron coating is thin. The method of increasing the thickness of the iron coating can be used to prolong the service life of the soldering iron tip, but increasing the thickness of the iron coating will cause the soldering iron to The thermal conductivity of the head decreases, 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 soldering iron tip will not be tinned if the iron plating layer is thick, and the soldering iron tip will not be durable if it is thin.
Nickel: The nickel in the plating of the soldering iron tip acts as an anti-rust in the iron plating and facilitates subsequent chrome plating.
Chromium: The chromium in the coating of the soldering iron tip does not stick to tin, which mainly prevents tin from running on the body of the soldering iron tip (tip) during use. Generally, the chrome plating time of the soldering iron tip is more than 5 minutes, and the ordinary decorative chrome plating is about 1 minute.
Tin: The tin in the coating of the soldering iron tip is on the head of the soldering iron tip, which is the part where tin sticks when used.
Soldering iron head production process:
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 tips. Straightening requires very straight, otherwise it will have a great impact on the quality of the product.
2. Cutting: cut into corresponding lengths according to different types of products
3. Turning of the head: The precision of the turner determines the appearance of the soldering iron tip. In addition to the general industry standard, the factory also accepts customers' sample customization and can order products with drawings.
4. Polishing and degreasing: Vibration polishing machine polishing to remove the turning head burrs
5. Iron plating: This is the key to the quality of the soldering iron tip, and all the core technologies of the soldering iron tip are here. In order to improve the quality, now it is not pure iron plating, but all iron alloy plating. The ratio of additives in the electroplating process is also an extremely important factor in determining the quality of the soldering iron tip.
6. Correction: The material after iron plating will often be deformed and needs to be corrected to the required size
7. Polishing: serve for electroplating surface
8. Tinning: pre-tinning is for the use of soldering iron tips
9. Surface electroplating: Generally, there are white chrome plating (displayed as silvery white), nickel-chrome-plated (displayed as bright color), and black chrome-plated (displayed as black). No matter what the appearance is, chromium is inseparable, the purpose is to prevent tin climbing.
