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A kind of preparation and forming method of nickel-based hydrogen storage alloy containing rare earth magnesium boron

A technology for hydrogen storage alloy and rare earth magnesium, which is applied in the field of alloy smelting, can solve the problems of easy volatilization of magnesium and high vapor pressure of magnesium, and achieve the effects of controllable magnesium composition, small composition segregation and strong operability

Active Publication Date: 2017-10-20
HENAN POLYTECHNIC UNIV
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Problems solved by technology

[0007] The present invention aims to provide a kind of equipment and method for preparing nickel-based hydrogen storage alloy containing rare earth magnesium and boron, so as to overcome the problems of high vapor pressure of magnesium and easy volatilization of magnesium in the smelting process

Method used

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  • A kind of preparation and forming method of nickel-based hydrogen storage alloy containing rare earth magnesium boron
  • A kind of preparation and forming method of nickel-based hydrogen storage alloy containing rare earth magnesium boron
  • A kind of preparation and forming method of nickel-based hydrogen storage alloy containing rare earth magnesium boron

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Embodiment 2

[0046] In this example, the same equipment as in Example 1 was used to prepare the nickel-hydrogen alloy. Only in this example, press La 4-x RE x MgNi y-z B z For batching, RE is Ce, Pr, B is Zn, x=1.7, y=17.1, z=3.5, and the ingredients are energized and melted to obtain the corresponding melt; after the added ingredients are completely melted, the melt is evacuated; When the vacuum degree reaches 7.8Pa, inject protective gas, the pressure rises to 1670Pa, and at the same time, the temperature of the melt drops to 1305°C; add magnesium blocks to the melt, and reversely stir the melt at a speed of 170 rpm Minutes, forward stirring at intervals of 3 minutes, and reciprocating for 13 minutes; increase the speed to 350 rpm, reverse stirring at intervals of 5 minutes, reciprocating for 30 minutes, and the melt preparation is completed; keep the obtained melt at 1370 ° C and wait for pouring ; Cool the pouring mold and pour it. The alloy prepared after pouring has compact stru...

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Abstract

The invention relates to equipment and a method for preparing a nickel-base hydrogen storage alloy containing rare-earth, magnesium and boron and belongs to the field of smelted alloys. The equipment comprises a smelting-pouring tank, a lifting-stirring mechanism, an induction smelting furnace, a crucible, a pouring mold, a pouring mold driving device, a slide and a cooling water circulating system, wherein the smelting-pouring tank communicates with a shielding gas injection device and a vacuum pumping device. After an alloy is smelted, shielding gas is injected into the smelting-pouring tank under the vacuum condition and is pressurized, magnesium blocks are added under the high pressure and are quickly stirred, after melt is prepared, the pouring mold is cooled, and pouring is performed. The alloy prepared with the equipment and the method is stable in quality, compact in structure and small in composition segregation, requirements of further processing are met, the equipment is easy to popularize and suitable for large-scale production of the nickel-base hydrogen storage alloy containing rare-earth, magnesium and boron, and the material yield is high.

Description

technical field [0001] The invention relates to an alloy preparation equipment and method, in particular to a nickel-based hydrogen storage alloy preparation equipment and method containing rare earth magnesium boron, belonging to the field of alloy smelting. Background technique [0002] The rapid development of clean and environment-friendly hydrogen energy will make it the "darling of new energy" in the low-carbon era. One of the hydrogen energy storage materials is hydrogen storage alloy, and hydrogen storage alloy is mainly used as the negative electrode material of Ni-MH power battery for low-emission hybrid electric vehicle (HEV). The Ni / MH secondary battery with hydrogen storage alloy as the negative electrode material has the advantages of strong overcharge and overdischarge resistance, high energy density, good cycle life, pollution-free and no memory effect, so it has been widely used. Ni / MH batteries are considered as promising auxiliary power sources for hybrid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C19/03
CPCC22C1/023C22C19/03
Inventor 刘宝忠范燕平王狂飞张宝庆王有超
Owner HENAN POLYTECHNIC UNIV
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