Indirect extrusion casting process

A squeeze casting and indirect technology, which is applied in the field of indirect squeeze casting, can solve the problems of large melt temperature drop, difficulty in pouring alloy melt, and high energy consumption of hydraulic system, so as to reduce the melt pouring temperature and facilitate automatic production. , The effect of reducing the energy consumption of smelting

Inactive Publication Date: 2004-11-03
龙思远
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Problems solved by technology

The production of non-ferrous alloy castings by the current squeeze casting method has the following disadvantages: ① Due to the use of three pieces and two mold openings, it is necessary to open and close the mold six times in one process cycle to complete the coating and take out the casting process. many, resulting in complex process, long time, low efficiency, high energy consumption of the hydraulic system, and low service life; The body is easy to oxidize; ③The mold must be fit for extrusion casting after the pouring is compl

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  • Indirect extrusion casting process

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[0014] Below in conjunction with the accompanying drawings and the embodiments are further described:

[0015] The embodiment takes the indirect squeeze casting of magnesium alloy wheels as an example, and its technological process is:

[0016] 1. Low-pressure filling and extrusion solidification: The magnesium alloy melt [7] in the alloy molten pool [6] is poured and filled through the pouring pipe [4] under the action of the piston pouring device [5], and the filling is about to be completed. When the extrusion head [10] goes up to close the pouring pipeline [4] and starts to pressurize and feed the magnesium alloy melt in the casting mold, at the same time, the piston pouring device [5] goes up and returns, and the magnesium alloy melt in the pouring pipeline [4] The body flows back into the alloy molten pool [6], and when the casting mold is full, the pressure of the extrusion head [10] is rapidly increased to above 1.0 MPa, and the pressure is maintained until the casting...

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Abstract

The indirect extrusion and casting method is used in producing non-ferrous alloy casting. It is realized through low pressure filling of alloy melt via casting pipes, and extrusion with extruding head to make alloy melt solidify and crystallize under certain pressure to form extruded non-ferrous alloy casting in high yield.

Description

Technical field: [0001] The invention relates to an indirect squeeze casting production method for non-ferrous alloy castings. Background technique: [0002] The current squeeze casting method to produce non-ferrous alloy castings is characterized by the use of three-piece two-open molds and manual pouring. The specific process steps are divided into five steps, namely: 1. Preheating, opening the upper and lower clamping surfaces in turn to clean the cavity and coating, ② manually pour the alloy melt into the extrusion chamber, ③ close the die for extrusion casting, ④ open the lower die to pull out and eject the remaining material, ⑤ close the lower die and open the upper die to eject the casting. The production of non-ferrous alloy castings by the current squeeze casting method has the following disadvantages: ①Due to the use of three-piece two-opening molds, the molds need to be opened and closed six times in one process cycle to complete the process of coating and taking ...

Claims

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Application Information

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IPC IPC(8): B22D17/00
Inventor 龙思远王建宏
Owner 龙思远
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