Developed European countries, especially the European Union countries, since the establishment of the EU since the establishment of the standardization work has been rapid, has been walking in the forefront of the world, leading the world trend. The EU currently has 25 member countries. GDP and the United States are on an equal footing. The influence of the EU standards in the world is getting bigger and bigger. With only one ROSH directive, the world has been turned upside down. China's annual export of wire and cable products to the EU nearly 200,000 tons, second only to the United States. Research on EU standards is of great significance to China's wire and cable industry.
The EU promulgated the product standard EN13602 on conductor copper wire in 2002, which stands for "Copper and copper alloy - cold drawn round copper wire for the manufacture of electrical conductors". The promulgation of this standard as the EU's unified standards and national standards of member states, replacing the original national standards of member states, such as we are very familiar DIN40500, BS4109. Copper wire is the most important wire and cable raw materials or semi-finished products. Copper wire standard wire and cable production is the most widely used in the formulation of the basic standard reference.
Copper wire standard performance indicators, will affect most of the performance of wire and cable products and quality. In particular, a large proportion of our products refer to the domestic standards formulated in accordance with the European standards such as Germany, France and Britain, mainly in the varieties of automotive wires, railway locomotive cables and machine control cables. Faced with the current tense energy, material prices soaring reality, to strengthen the control of the quality of the copper wire and cable for cost control and product performance, reduce energy consumption is of great significance, and the EU's new standard of research and application is a shortcut . The new EU standards have crystallized the crystallization of long-term processing technology and experience of European enterprises with comprehensive contents, specific indicators and complete specifications. This is of great significance to the production, inspection, trade and use of copper wire.
The EN13602 standard includes bare copper monofilaments, multiple bare copper monofilaments, tinned monofilaments, multiple tinned monofilaments in product categories. Corresponding to our standard GB / T3953 and GB / T4909, not only the specific requirements should be higher than our standard. This standard specifies the requirements for metal chemical content analysis on materials. In the product performance on the mechanical properties of copper wire not only provides the elongation, but also provides the tensile strength, flexibility, the number of bending requirements. Especially for the first time in the product processing method, the products of multi-drawing are included in the standard, and the classification, performance and testing methods of multi-head drawing products are stipulated. The standard also static disk and moving disk to close the line of copper wire of different packaging requirements were separately stipulated.
Long copper wire stranded into a bundle of convenient, uniform quality, not short silk, good bending resistance, high production efficiency, widely used in electrical equipment cables, automotive cable conductor manufacturing. Long copper wire in Europe occupy a considerable proportion of copper production. In Europe, the multi-wire drawing machine is already a trademark of automotive cable and industrial cable manufacturing plant. EN13602 standard for the international wire and cable copper wire production, use, trade, resulting wire and cable products have a significant impact.
Cylinder is the place where the fuel-air mixture is compressed and burned to convert chemical energy to heat and mechanical energy to make the bike go. Just like in any other internal combustion engine. The engine might have only one cylinder or many. More than four is rare, though.The cylinder is fired by a spark plug which creates a spark electrically from the battery .
It is the cylinder in an engine where the combustion takes place-..in vehicle the cylinder is just above the transmission. think of it as a syringe. the piston moves up and compresses the air fuel mixture and as a result combustion takes place. the piston is then pushed down. this up and down motion of the piston rotates the crankshaft which is connected to the transmission which transmits power to the wheels. there are various configurations of cylinders in an engine. in vehicle have single cylinder, parallel twin, v twin, L twin, inline 4, inline 3, inline 6, v4, flat twin. similarly in cars you get inline 3, inline4, inline6 , v6, v8, v10, w12. the number represents the no. of cylinders and the letter or prefix represents the configuration.
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