31results about How to "Guaranteed annealing effect" patented technology

The invention discloses a preparation method of a FeSe-based superconducting wire. The method comprises the following steps: 1, assembling an iron tube, an iron rod and an iron plug to obtain a tubingcomplex; 2, sealing the two ends of the tubing complex, and then obtaining a single-core FeSe-based wire through rotary swaging and drawing in sequence; 3, sintering the single-core FeSe-based wire to obtain a FeSe-based wire; and 4, annealing the FeSe-based wire to obtain a FeSe-based superconducting wire. According to the invention, the single-core FeSe-based wire is formed through powder charging by adopting a vibration tubing method and cold processing, and the iron rod diffuses into the molten Se powder in the subsequent sintering process to generate a compact FeSe layer and form a central hole, so that the intergranular connectivity is improved; and the oxidizing atmosphere is introduced through the central hole to be in full contact with the FeSe-based superconducting phase for annealing, so that the precipitation of interstitial iron is promoted, the superconductivity of the FeSe-based superconducting wire is improved, and the current-carrying performance of the FeSe-based superconducting wire is further improved.

The invention discloses an isothermal spheroidizing annealing furnace for bearing steels, which can be used for treating the bearing steels in a mode of double layers and double directions. Length ratio of a waste heat recovery heat-exchanging chamber to an isothermal chamber to an intercooling chamber to a heating preservation chamber in a hearth is 1:(2-5):(0.2-0.5):(2-5) along with the front and rear directions, thus annealing treatment effect of the bearing steels in double layers and double directions can be ensured. In the waste heat recovery heat-exchanging chamber, if one layer of driving roller group in the upper and lower layers of driving roller groups is used for conveying high-temperature bearing steels to be sent out of a furnace mouth, and the other layer of driving roller group is used for conveying room-temperature bearing steels (called cold metals) which are input into a furnace mouth, the high-temperature bearing steels and the room-temperature bearing steels can exchange the heat mutually, thus the room-temperature bearing steels are heated so as to recover heat (to be wasted) of the high-temperature bearing steels, reduce subsequent heat which enters into the isothermal chamber, and reach energy-saving effect. In the intercooling chamber, a cooler can be used for cooling the high-temperature bearing steels which are sent out of the heating preservation chamber, while the high-temperature bearing steels and the room-temperature bearing steels on the upper and lower layers of driving roller groups exchange heat mutually, thus recovering the heat of the high-temperature bearing steels, heating the low-temperature bearing steels, reducing the subsequent heat which enters into the heating preservation chamber and is required by the low-temperature bearing steels, further saving energy, and lowering the waste of the heat.

The invention discloses a conveying device in a hollow glass product annealing furnace which is capable of evenly heating the hollow glass products in the annealing process. The conveying device comprises a conveying rack and a conveying transmission device, wherein the conveying rack comprises two pairs of conveying bars; placement grooves are evenly formed on the conveying bars; the conveying transmission device comprises two conveying transmission mechanisms with the same structure; each conveying transmission mechanism comprises four driving discs which are orderly arranged in parallel to each other along a straight line; the center line of the four driving discs is perpendicular to the conveying direction of the conveying rack; the two middle driving discs are connected through an eccentric transmission shaft; the two middle driving discs and the corresponding driving discs are connected through transmission shafts arranged symmetrical to the driving discs, respectively; each driving disc is provided with a driving shaft and a support shaft along the center line of the driving disc, respectively; and support rods are movably articulated between the end parts of the inner and outer conveying bars and the corresponding transmission shafts, respectively. The conveying device in the hollow glass product annealing furnace can be applied to the annealing furnaces for various hollow glass products.