43results about How to "Uniform and fine structure" patented technology

The invention discloses a combined continuous rolling and continuous drawing machine with three sets of double-roller rolling machine and seven die drawing machines. According to the invention, a rod charging device is provided with a copper rod inlet and a copper rod outlet; the copper rod outlet corresponds to the first rolling channel inlet of the three sets of double-roller rolling machine; the rolling channel outlet of a previous set of the three sets of double-roller rolling machine corresponds to the rolling channel inlet of a next set of the three sets of double-roller rolling machine; the rolling channel outlet of the last set of the three sets of double-roller rolling machine corresponds to the first drawing channel inlet of the seven die drawing machines; the drawing channel outlet of a previous die of the seven die drawing machines corresponds to the drawing channel inlet of a next die of the seven die drawing machines; the last drawing channel outlet of the seven die drawing machines corresponds to the inlet of a constant-speed wheel; the outlet of the constant-speed wheel corresponds to the inlet of an annealing device; the outlet of the annealing device corresponds to the inlet of a wire-storing wheel set; and the outlet of the wire-storing wheel set corresponds to the inlet of a wire take-up device. With the combined continuous rolling and continuous drawing machine provided by the invention, an 8-mm oxygen-free copper rod can be drawn into a copper wire with a desired specification after rolling by the three sets of rolling machine, so a copper wire with a diameter of 0.10 mm or below can be produced through processing; the processed copper wire has a uniform and fine lattice structure, which is beneficial for reduction in defects and continuation of advanced processing; and energy consumption in production of copper wires with unit weight is substantially decreased.

The invention discloses a copper-based pantograph carbon contact strip made from a graphene copper-based nano selenium niobium composite material. The graphene copper-based nano selenium niobium composite material is prepared from, by weight, 70-75% of a mixture and 25-30% of an adhesive by mixing, pressing, calcining and copper impregnating. By adoption of a preparation method of the copper-basedpantograph carbon contact strip, the copper-based pantograph carbon contact strip is high in abrasion resistance, low in friction coefficient, high in conductivity and great in cost performance and impact resistance, problems in use of existing pantograph carbon contact strips are effectively solved, and high practicality is realized.

Provided is a sputtering target and / or a coil disposed at the periphery of a plasma-generating region for confining plasma. The target and / or the coil has a surface to be eroded having a hydrogen content of 500 μL / cm2 or less. In dealing with reduction in the hydrogen content of the surface of the target and / or the coil, the process of producing the target and / or the coil, in particular, the conditions for heating the surface of the target and / or the coil, which is thought to be cause of hydrogen occlusion, are appropriately regulated. As a result, hydrogen occlusion at the surface of the target can be reduced, and the degree of vacuum during sputtering can be improved. Thus, the present invention provides a target and / or a coil that has a uniform and fine structure, makes plasma stable, and allows a film to be formed with excellent uniformity and provides a method of producing the target and / or the coil.