Niobium Tin Wire

The invention relates to a roller device for wire rod rolling, in particular to a roller device for small diameter niobium-tin wire rod rolling. Background: tantalum wire is mainly used to make anode leads of tantalum capacitors, and niobium wire is mainly used in the optical industry. With the development of tantalum, capacitors, and optical/electronic components, the diameter of niobium wire is becoming smaller and smaller, and the surface quality and mechanical properties are required to be higher. 

Pass rolling is a very important process in the production of niobium-tin wire. the traditional pass is a hexagonal pass, a small 25 coffee wire can only be rolled to 4 & GT 3 coffee rolling because the wire size is small, the visual observation of the hole is not a big difference, and manual operation is not easy to choose the wrong hole, resulting in product scrap; and from 4 & GT. 3 coffee rolling to 2.4 coffee process, wire in the pass is also prone to instability down (rotation), resulting in serious lateral flash products scrap. Therefore, it is difficult to ensure the surface quality of the niobium wire rolled by the traditional hexagonal pass roller device. 

Generally, it takes about 4 times of rotary forging from 4 & GT. 3mm to get the wire of small size 24 coffee, the utility model greatly reduces the production efficiency and increases the working intensity of the operators. The utility model is characterized in that a square pass roller device with a diagonal arc in the direction of the vertical axis is used to roll the square pass at the same time, and the pass arranged in odd and even order is used for rolling so that the operation can not be mishandled, the coarse IK and niobium-tin wire can be rolled into a fine niobium wire with a diameter of 2.2 mm, without instability and flash, and the surface quality of the wire can be guaranteed, improve production efficiency and reduce the working intensity of operators.

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