SKF Group, the world's largest bearing manufacturer, announced on September 10, 2012 that it plans to invest 700 million Swedish kronor (about US$106 million) to build a new plant and R&D center in Jiading District, Shanghai, China.
The construction of the plant is expected to begin before the end of the third quarter and will be completed in the fourth quarter of 2013. By 2015, the plant is expected to employ about 900 employees.
SKF chief executive TomJohnstone said the move will “strengthen our footprint in production, engineering, development and testing in this region and will enable us to better support our local customers better and faster. â€
In July this year, SKF stated that due to the global economic slowdown, it plans to contract production this year and carry out more cost reductions.
The basic knowledge of maintenance-free lead-acid battery people often say that the regular name of the maintenance-free battery is called the valve-controlled sealed lead-acid battery. Valve controlled sealed lead-acid battery from the appearance including, shell, valve cover, wiring terminals. The sealing material around the terminal is red and black (or blue) respectively to indicate the positive and negative terminals. The 12V battery is divided into 6 independent isolated cells, each cell has a positive plate group and a negative plate group connected by their own bus conductor. The plate of the lead-acid battery is like the structure of reinforced cement, which is formed by coating (or rolling) active substances on the sieve skeleton of the alloy wire: the material on the positive plate is lead dioxide (PbO), and the material on the negative plate is velvet lead (Pb). Each of the positive and negative 2.
The plates are separated by porous microfiber material (or filled with silica gel material), which adsorbs sulfuric acid (HSO) electrolyte.
This fiber material (or silica gel material) is the liquid and gas transport channel during the electrochemical reaction process, it is tightly assembled with the positive and negative plate groups to form a 2V cell. Since the plates of lead-acid batteries inevitably produce hydrogen and oxygen when they are being charged, pressure builds up in the cell when they produce too much and are not ready to melt into water. In order to ensure the normal and safe work of the battery, each single cell has its own air overflow valve, when the pressure is excessive, let the gas escape automatically. Compared with the battery tank filled with full of electrolytic liquid inside the battery, the valve controlled sealed lead-acid battery contains only a small amount of electrolyte inside, also called: the lean battery. However, due to the design of the electrolyte has a certain redundancy, and under the protection of the overflow, as long as the valve pressure be reasonable used, the water loss is minimal which is caused by the gas escape, and the valve control battery electrolyte in the life process of the basic need not supplement, so the valve control sealed lead-acid battery is also known as maintenance-free battery.
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