The difference between rolled copper and electrolytic copper

Electrolytic copper is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields, second only to aluminum in the consumption of non-ferrous metal materials in my country.

Copper is the most widely used and used in the electrical and electronic industries, accounting for more than half of the total consumption. Used in various cables and wires, windings of motors and transformers, switches and printed circuit boards, etc.

In the manufacture of machinery and transportation vehicles, it is used to manufacture industrial valves and accessories, meters, sliding bearings, molds, heat exchangers and pumps.

It is widely used in the chemical industry to manufacture vacuum vessels, distillation pots, brewing pots, etc.

In the construction industry, it is used as various pipes, pipe fittings, decorative devices, etc.

2. Introduction of rolled copper foil

Rolled copper foil (Rolled copper foil) basic meaning: foil means very thin. Copper foil is a very thin copper product. The thickness of copper like paper is expressed in microns. Generally between 5um and 135um, the thinner and wider the more difficult to produce. Calendering means compressing and extending copper foil.

Compared with electrolytic copper foil, rolled copper foil has the characteristics of higher strength, flexibility, ductility, electroplating, good conductivity, and excellent surface gloss. It is widely used in electronic appliances, communications, integrated circuits, automobiles, machinery manufacturing, construction and other industries , It is an irreplaceable raw material or substrate for some products.

Features of rolled copper foil

1. High adherence active substance

2. Excellent tensile strength

3. High elongation

4. Available micron thickness range

Targray also provides rolled copper anode foils for lithium-ion battery anodes. We can provide customers with special copper alloys and various services, such as printed circuit boards, electromagnetic shielding and rechargeable batteries. The application range is wider and wider.

Product characteristics of rolled copper foil

Rolled copper foil has low surface oxygen characteristics, can be attached to various substrates, such as metals, insulating materials, etc., and has a wide temperature range. Mainly used in electromagnetic shielding and antistatic. The conductive copper foil is placed on the surface of the substrate and combined with the metal substrate, which has excellent conductivity and provides electromagnetic shielding effect. Can be divided into: self-adhesive copper foil, double-conducting copper foil, single-conducting copper foil, etc.

Electronic grade copper foil (purity above 99.7%, thickness 5um-105um) is one of the basic materials of the electronics industry. The rapid development of electronic information industry, the use of electronic grade copper foil is increasing, and the products are widely used in industrial calculators, Communication equipment, QA equipment, lithium-ion batteries, civilian televisions, video recorders, CD players, photocopiers, telephones, air conditioning, automotive electronic components, game consoles, etc. The domestic and foreign markets have an increasing demand for electronic grade copper foil, especially high-performance electronic grade copper foil. Relevant professional organizations predict that by 2015, China's domestic demand for electronic grade copper foil will reach 300,000 tons, and China will become the world's largest manufacturing base for printed circuit boards and copper foils. The market for electronic grade copper foil, especially high-performance foil, is optimistic. .

Third, the difference between rolled copper and electrolytic copper

1. The difference between rolled copper and electrolytic copper

1) The use of rolled copper: rolled copper is mainly used for cameras in flip phones.

2) Electrolytic copper use: Electrolytic copper is mainly used to manufacture printed circuit boards.

2. The color difference between rolled copper and electrolytic copper

1) Color of rolled copper: rolled copper is yellowish.

2) Electrolytic copper color: the electrolytic copper is red.

3. The difference between the production process of rolled copper and electrolytic copper

1) Rolled copper production process: Rolled copper is produced by coating. Rolled copper is made by rolling copper ingots, and then undergoing processes such as forging, anti-oxidation, and roughening treatments. Compared with electrolytic copper, rolled copper production is more difficult. There are currently only three companies in the world that can mass produce (according to relevant reports), and the ductility is better than 30%.

2) Electrolytic copper production process: electrolysis is completed by electroplating process. Electrolytic copper is made by precipitating the copper ions in the copper sulfate solution by electric current, and then is completed after anti-oxidation and roughening treatments. The best SHTE type of electrolytic copper is only 15%-20%), which is mainly used in places where shielding is required, such as FPCs, notebook computers, tablet computers, and printers.

4. The difference in quality and use of rolled copper and electrolytic copper

1) The quality and use of rolled copper: Rolled copper is made of copper foil by extrusion. Its characteristics are: good bending resistance, but electrical conductivity is weaker than electrolytic copper. It is mainly used for cameras in flip phones. . From the appearance, the electrolytic copper is red, and the rolled copper is yellowish

2) The quality and use of electrolytic copper: As the name implies, electrolytic copper is to form copper foil by adsorbing copper ions on the substrate through electrolysis. Therefore, its characteristics are: strong electrical conductivity, but relatively weak bending resistance

5. The performance difference between rolled copper and electrolytic copper

1) Rolled copper performance: Rolled copper has better flexibility. Generally, rolled copper is used for products with bending requirements.

2) Electrolytic copper performance: electrolytic copper has better conductivity

6. The price difference between rolled copper and electrolytic copper

The unit price of rolled copper is more expensive than that of electrolytic copper.

7. The difference in molecular tightness between rolled copper and electrolytic copper

Electrolytic copper molecules are relatively loose and easy to break; rolled copper molecules are tight and flexible, the thinner the better the flexibility; the phosphorous rolled copper molecules are fine, and the post-treatment electroplating surface is brighter, but the flexibility is worse than pure rolled copper.

8. The crystal structure difference between rolled copper and electrolytic copper

Rolled copper is arranged vertically, and electrolytic copper is arranged superimposed.