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Tapping zinc alloy and preparation method

A technology of zinc alloy and prefabricated body, which is applied in the field of casting, and can solve the problems that the adjustment of pore size and pore uniformity is not easy to control, the process is complicated, and the error is large, so that the adjustment of pore uniformity is easy to control and the process is simple , low cost effect

Inactive Publication Date: 2006-05-17
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

The process flow of investment casting method is complicated, the product quality stability is not good, and the particle seepage casting process is simple, but the current method is not easy to control the adjustment of pore size and pore uniformity, and the compactness of particles is evaluated by the pressure index method The error is large, and the seepage particles will float up, and most of the existing processes are for aluminum alloys

Method used

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Embodiment Construction

[0014] The invention relates to an open-cell zinc alloy and a preparation method thereof, comprising zinc and aluminum, wherein the weight percentage of aluminum is 5-28%, and the alloy also contains 0.8-2.5% copper and 0.01% by weight ~0.03% magnesium, in addition to not more than 0.1% iron, 0.02% tin, 0.003% cadmium and 0.004% lead by weight, and the balance is zinc.

[0015] The preparation of the open-pore zinc alloy is carried out as follows: firstly, the particle diameter is 0.4 to 6 mm sodium chloride particles, potassium chloride (7 to 14 percent by weight) and absolute ethanol (1 to 3 percent by volume). ) after mixing evenly, put it into the prepared mold, and compact it according to the volume compression rate of 15-25%; then put it into a well-type crucible resistance furnace and heat it at 580-640°C for 1-1.5 hours for sintering; secondly, sinter After the prefabricated body mold and vacuum equipment are assembled, the molten metal liquid to be used is poured into...

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PUM

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Abstract

This invention relates to holing. Zn alloy and its preparation method. The composition of which is Zn and Al, and Al is 5-28%, Cu is 0.8-2.5%, Mg is 0.01-0.03% Fe is less or equal to 0.1%, Sn is less or equal to 0.02%, Cd is less or equal to 0.003% and Pb is less or equal to 0.004% rest is Zn. The preparation method is to mix uniformly the soluble particles, adhesives and organic solvent to be filled into a mold to be tightened and sintered to a prefabricate, then the Zn alloy smelted solution is poured into the mold having connected to the vacuum device to be opened for penetrating the solution into the prefabricated particle slots then to take out the metal and the prefabricated strand to be solved in water to get the holing Zn alloy.

Description

technical field [0001] The invention relates to nonferrous metals and a preparation method thereof, belonging to the technical field of casting. Background technique [0002] According to the type of pores, porous metal materials can be divided into two categories: open pores and closed pores. The existing methods for preparing porous metals include casting method, metal plating method, powder metallurgy method and sputter deposition method. Among them, the casting method has great advantages due to its simple process and low cost. Casting methods mainly include molten metal foaming method, adding hollow ball material method, particle infiltration method, investment casting method, etc. The first two methods are suitable for preparing closed-cell metal foam, and the latter two methods can be used for preparing open-cell metal foam. The process flow of investment casting method is complicated, the product quality stability is not good, and the particle seepage casting proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04C22C1/08C22C1/04
Inventor 马颖郝远阎峰云李元东陈体军曹立宏杨贵荣
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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