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Process for preparing semisolid non-dendritic zinc base alloy

A semi-solid, non-dendritic technology, applied in the field of preparing semi-solid non-dendritic metal slurry, can solve the problems of complex process and low production efficiency, and achieve a wide range of alloys, avoid melt pollution, and simple and easy process. Effect

Inactive Publication Date: 2005-10-19
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Due to the influence of factors such as complex equipment and processes, or low production efficiency, these methods are still in the research stage, and there is still a distance from practicality.

Method used

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  • Process for preparing semisolid non-dendritic zinc base alloy
  • Process for preparing semisolid non-dendritic zinc base alloy
  • Process for preparing semisolid non-dendritic zinc base alloy

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Embodiment Construction

[0009] First cast the ZA27 alloy billet with the general casting method, Figure 1 Shown is the metallographic diagram of the structure of the ZA27 alloy billet cast by the general casting method, and then the ZA27 alloy billet is placed in a resistance furnace at a temperature of 370 ° C for 2 to 4 hours of solid solution treatment, Figure 2 Shown as the microstructure metallographic diagram of the ZA27 alloy after solution treatment, and then quickly moved it to a resistance furnace at a temperature of 460 ° C for 30 minutes to obtain solid phase particles of about 42 μm, round and uniform, and the solid phase ratio About 62% semi-solid slurry, such as Figure 4 Show. Figure 2 is The metallographic diagram of the semi-solid structure of the ZA27 alloy without solution treatment and partial remelting at 460 °C.

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Abstract

The process of preparing semisolid non-dendrite zinc base alloy includes preparing green body, heating treatment at solid solution temperature for certain time, and re-melting at semisolid temperature. During preparing semisolid ZA27 alloy slurry, ZA27 alloy rod is first solid solution treated at 370 deg.c for 3-5 hr and then heated at 460 deg.c inside one heater for 30 min.

Description

technical field [0001] The invention belongs to the technical field of semi-solid metal forming, in particular to a method for preparing semi-solid non-dendritic metal slurry. Background technique [0002] Since the concept of semi-solid metal forming was first proposed by American scientists in the 1970s, this technology has attracted extensive attention from the international materials community. This forming technology is a new forming technology between traditional casting and forging. It combines the advantages of casting and forging. It can not only significantly reduce or eliminate shrinkage porosity, improve the quality of parts, but also save energy and extend the mold. life and improve production efficiency. According to some technical characteristics of the forming process, the semi-solid forming of metals can be divided into rheological forming and thixoforming. Among them, thixoforming is easy to organize production and realize automation. It is widely used and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/00C22C18/00C22F1/16
Inventor 陈体军李元东郝远马颖阎峰云杨贵荣
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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