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Soon, people began to discover that when copper was mixed with tin or other metals, the metal would become more useful, and then it developed into the bronze age. It refers to the transitional period between the Neolithic Age and the Bronze Age, marked by the use of red copper. It has a soft texture and is not suitable for making things. According to Parpola[Parpola, Asko (2005), 'Study of the Indus script', Transactions of the 50th International

Conference of Eastern Studies, Tokyo The Tôhô Gakkai, at pp.　 Red copper is natural copper. 2866. There are different opinions about when our country entered the Bronze Age. In Europe, the onset of this work was a thousand years later, that is, between the 4th millennium BC and the 3rd millennium BC. Egypt, Mesopotamia, and the Caucasus region first entered the Red Bronze Age from the late 5th millennium BC to the 4th millennium BC

, which lasted about 1,000 years, and then entered the early Bronze Age. It is estimated that there have been transactions between the two sides during this period. Generally speaking, European prehistorians use the term 'bronze age' more widely, while archaeologists in the Middle East tend to use the term 'copper and stone combined age'.Copper Age (Copper Age), also known as copper and stone combined age, gold and stone combined age.

Therefore, in the red copper era, humans still mainly used stone tools. In addition, Central America independently discovered alchemy in the 7th century, but it did not pass the copper age. Some scholars believe that Longshan Culture belongs to the Bronze Age, and some scholars believe that my country has not experienced the Bronze Age.. This process is often very fast, so it is difficult to define in detail the distinction between the copper era and other eras.], because in copper clad steel strips supplier the Indus civilization and southern Turkmenistan The styles of ceramic utensils in northern Iran from 4300 to 3200 in the copper age are very similar

Copper tube for cable

Tin bronze has good casting function, anti-friction function and good mechanical function, suitable for making bearings, worm gears, gears, etc. In certain occasions, its function is better than tin bronze.. Aluminum bronze has high strength, good wear resistance and corrosion resistance, and is used for casting high-load gears, bushings, marine propellers, etc. Lead bronze is a widely used bearing material for modern engines and grinding machines.35%, tin content 5~8%. Due to the participation of a certain amount of sulfur in Copper tube for cable the composition,

it improves fluidity and wear resistance. And other trace elements such as iron Fe, zinc Zn, etc. Bronze originally referred to copper-tin alloys, and later copper alloys other than brass and cupronickel were all referred to as bronze, and were often named as the first element added to the list before the bronze name.

Beryllium bronze is also used to make non-sparking things for coal mines and oil depots. Phosphorus copper (phosphor bronze) (tin bronze) (tin phosphor bronze) increases the degassing agent phosphorus P content by bronze 0.03~0. , Good fatigue resistance can be used for electrical and mechanical materials, the reliability is higher than the general copper alloy products. Beryllium bronze and phosphor bronze have high elastic limit and good conductivity, and are suitable for making fine tension springs and electric touch elements.Phosphor Bronze, also known as Phosphorus Tin Bronze, is actually attributed to Tin Bronze

Because tungsten metal is incompatible with other metals, electroplating of tungsten copper alloy is more difficult. Tungsten-copper plating must be cleaned before use. Ultrasonic + neutral cleaning solution is used to clean the tungsten-copper surface of oxidized substances, oil stains and other dirty substances.. The cleaning agent prevents strong acids and alkalis. The interval between cleaning and electroplating technology should not be too long, which means electroplating immediately after cleaning. 2. Tungsten copper is a two-phase 'pseudo-alloy' in which tungsten and metal copper are combined. If the tungsten-copper does not show bubbles, discoloration, etc

Copper Tape For Transformer

No porosity, trachoma, looseness, excellent electrical conductivity, high precision of the surface of the mold eroded by Copper Tape For Transformer electricity, after heat treatment technology, the electrode has no direction, suitable for fine and fine hitting, has excellent thermoelectricity, manufacturability, ductility, Corrosion resistance and weather resistance. Features high purity, fine arrangement, and extremely low oxygen content..

Because aluminum bronze can undergo a phase change at a certain temperature, and some parts made of aluminum bronze are often  served at a certain temperature, this will inevitably cause the part to undergo a phase change due to overheating of the surface, and then affect its physical and mechanical functions. The casting function, anti-friction function and mechanical function of tin bronze are suitable for manufacturing bearings, worm gears and gears. Beryllium bronze is also used to produce non-sparking things used in coal mines and oil depots.

Lead bronze is a widely used bearing material for modern engines and grinding machines.　 Here is the main point to introduce aluminum bronze, aluminum bronze material has high strength, good wear resistance and corrosion resistance, and is used to cast high-load gears, bushings, marine propellers, etc.. Aluminum bronze has high strength, excellent electrical conductivity and thermal conductivity, and has been widely used in plumbing, mechanical and electrical fields.

Beryllium bronze and phosphor bronze have high elastic limit and good conductivity, and are suitable for manufacturing fine tension springs and electric touch elements.Bronze originally referred to copper-tin alloys, and later copper alloys other than brass and cupronickel were all called bronzes, and were often named as the first element added to the list before the bronze name

Electromagnetic switch, pen holder, roof board, etc. Products with outstanding conductivity are required. specializes in processing red copper. Red copper is pure copper, also known as red copper. The scope of application can be applied to electrical appliances, steamed buildings and chemical industries, especially printed circuit boards for terminals, copper tape for air cover, air cushion, and busbar terminals.

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0020.1T399. 2 low-phosphorus deoxidized copper.00050.0020.0010.0076CuDLPM1рTP2CuDHPC12200C1220SFCu2 .199.00040.010. The first digit indicates the alloy series, indicated by 2-9. 2.015~0.00010.050. Note ① The copper content follows the addition of the sequence number; ② The element content is the nominal percentage content (the same below). Oxygen-free copper TU + sequence number ① such as TU1, TU2.0010.0020.00150. 7.0010.95-25-C1050099.00050.0050.0040.0020.010.0010.0040.950.50.900.10 Special copper silver copper TAg0.050.0250.0020.1.0010.0040M0ъTU2CuOFC10200C1020OFCuC103CuOFM1ъ TP1CuDLPC12000C1201SWCu2.0050.95-8-C1050099.990. The national standard (GB) system in the red copper grades comparison table The national standard (GB) system in the copper grades comparison table shows an example of the composition of the classification table in the method table.040

C1250099.95014.020.950.88—0.01TU199.0040.0020.001~0.0020.95————————C1030099.1MC0. Dali drops, such as the minimum purity of M1 and M2 copper are 99.0040.0040.00050.004~0.1 Purple copper grade comparison table of China (GB) chemical composition?

They are different names for the same type of copper.95% O. Electromagnetic switch, pen holder, roof board, etc. The application scope of red copper can be used in electrical appliances, steamed buildings and chemical industry, especially printed circuit boards for terminal, copper tape for air cover, air cushion, and busbar terminal. Many are used to manufacture products such as wires, cables, brushes, electric corrosion copper for sparks, etc.Comprehensive Encyclopedia of Red Copper and Red Copper Red copper is pure copper, also known as red copper., which require excellent conductivity. Red copper can also be called red copper. The difference between red copper and red copper is that they are only called differently. That is red copper. Red copper density 8. The characteristics of red copper are high purity, fine arrangement,

and extremely low oxygen content.96g/(cm) Red copper specific gravity copper wire transformer 8. No porosity, trachoma, looseness, excellent electrical conductivity, high precision of the surface of the mold eroded by electricity, after heat treatment technology, the electrode has no direction, suitable for fine and fine hitting, has excellent thermoelectricity, manufacturability, ductility, Corrosion resistance and weather resistance.89g/(mm) Cu ≥ 99. Pure copper extracted from sulfide or oxide copper minerals can be used for casting money and making utensils. It has good electrical conductivity and thermal conductivity, excellent plasticity, and is easy to make by hot and cold pressure

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The economic conditions of these countries such as the United States, Japan, and Western Europe have a greater impact on copper prices. A price in turn will affect supply and demand, that is, when prices increase, supply will increase and demand will be reduced, otherwise it will show an increase in demand and a reduction in supply, so prices and supply and demand will affect each other.. Production cost Production cost is the basis for measuring the price level of products. 3.

The economic principle of supply and demand points out that when a product exhibits an oversupply, its price drops, otherwise it rises. 7. 5. The production cost of copper includes exercise cost and refining cost. Zambia and Zaire in central Africa are also important copper producers. Generally speaking, the economic situation is good, copper demand increases, and prices increase, and vice versa

The other type is not called colorless metals, but ferrous metals.5g/cm3), vivid chemical properties, Such as aluminum and magnesium. There are only three types of ferrous metals: iron, manganese and chromium. And alongside ferrous metals and non-ferrous metals, it has become the three major categories of metals. Non-ferrous metals can be divided into four categories: (1) heavy metals: general density is above 4.; (4) rare metals: such as tungsten, molybdenum, germanium, lithium, lanthanum, uranium Wait.53 ~ 4. (3) Precious metals: low content in the crust, difficult to extract, high price,

high density, stable chemical properties, such as gold, silver, platinum, etc. In order to express the importance of rare metals, there are three categories of added rare metals.5g/cm3, such as copper, lead, zinc, etc.; (2) light metals: low density (0.Metal classification: Generally divided into two categories of ferrous metals and non-ferrous metals according to the color of the metal surface. Because rare metals are important in modern industry, they are sometimes distinguished from non-ferrous metals and become a class by themselves.. Non-ferrous metals usually refer to all metals except iron (and sometimes manganese and chromium) flexible copper tape and iron-based alloys

copper clad aluminium wires

H70 brass mechanical properties tensile strength σb (MPa): ≥390 elongation δ10 (%): ≥12 Note: tensile mechanical properties of the plate sample size: thickness ≥0.002 Note: ≤0. 0～71. H70 brass has extremely good plasticity and high strength, good cutting performance, easy to weld, non-stable to general corrosion, but easy to crack. Has good mechanical properties, good plasticity in the hot state, acceptable plasticity in the cold state,

good machinability, easy fiber welding and welding, corrosion resistance, is a widely used brass variety. Used for complex cold-drawn and deep-drawn parts, such as radiator shells, ducts, bellows, bullet shells, gaskets.002 bismuth Bi: ≤0.3 (impurities).10 beryllium Sb: ≤0.5 iron Fe: ≤0.5 Zinc Zn: balance lead Pb: ≤0.The superiority of the widely used H70 brass can be used for various deep-drawing and bending manufacturing parts, radiator shells, ducts, bellows, bullet shells, gaskets, etc.03 nickel Ni: ≤0.5 H70 brass chemical composition copper Cu: 68.5

 This white copper is widely used in the manufacture of precision machinery, eyewear accessories, chemical machinery and ship components. The copper clad aluminium wires the zinc content in brass, the higher its strength and the slightly lower plasticity. Reference parameters: Cu ≥ 99. Pure copper has a density of 8. Cupronickel for industrial use is divided into two major categories: structural coppernickel and electrical coppernickel. The structure of copper-nickel alloy is characterized by good mechanical properties and corrosion resistance, and beautiful color. Lead bronze is a widely used bearing material for modern engines and grinding machines. Copper alloy (copper alloy) is an alloy composed of pure copper as a matrix with one or several other elements