Channel type metal solid-liquid mixed spraying device and suspension casting method thereof

Abstract

The invention discloses a channel type metal solid-liquid mixed spraying device and a suspension casting method thereof. The channel type metal solid-liquid mixed spraying device comprises a reactor and a powder feeder. A plurality of partition bins are evenly arranged on the outer side of the reactor in the circumferential direction, the partition bins are divided into two layers, and the upper partition bins and the lower partition bins are arranged in a staggered mode. The powder feeder is located at the bottom of the partition bins, a powder hopper connected with the powder feeder is arranged on the upper side of the powder feeder, and the input end of the powder feeder is connected with an inert gas pipeline. A variable frequency motor connected with the powder feeder is arranged on one side of the powder feeder, an electromagnetic spray gun connected with a powder outlet of the powder feeder is arranged on one side of the powder feeder, and an outlet of the powder feeder is communicated with the interior of the reactor. A plurality of inclined through holes are uniformly formed in the outer side of the top end of the reactor in the circumferential direction, high-temperature video probes are mounted in any two of the inclined through holes, and plugs with gas regulating valves are mounted in the rest of the inclined through holes. The invention further discloses a casting method.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a channel-type metal solid-liquid mixing injection device and a suspension casting method thereof. Background technique [0002] With the advancement of human civilization and the development of science and technology, metal materials tend to develop towards thickening and high alloying. However, due to the slow cooling rate and long solidification time of such materials during casting, the internal structure is often coarse. Severe segregation and stress concentration. In order to solve these problems, people continue to try to use various methods to control the solidification process to improve the internal quality of the material and reduce the elimination of defects, but the traditional methods such as the use of cold iron can no longer fully and effectively control the solidification process of such metal materials, and new methods must be found. process plan to solve it. ...

AI Technical Summary

Problems solved by technology

[0012] 2. Suspension and uniform distribution of powder in molten metal

[0013] 3. Reasonable formulation of process parameters for mixing powder and molten metal

Regardless of suspension casting, semi-solid casting, or solid-liquid mixed casting, the current methods are all empirical judgments, and it is difficult to obtain the best mixing effect.

[0014] 4. Oxidation gas absorption problem when powder is mixed with molten metal

The specific surface area of ​​the powder is large, high temperature is easy to oxidize and absorb gas, and the molten metal is also easy to oxidize and absorb gas twice when it is exposed in the air.

[0015] 5. The self-conditional limitation of the popularization and application of existing technologies

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