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A multi-metal injection molding system and method with on-line adjustable alloy composition

A technology of injection molding and alloy composition, applied in the field of metallurgy, can solve the problems of inability to realize on-line adjustment of alloy composition, increase of waste at the head and tail, decrease of yield, etc., to improve filling stability, efficiency and yield, and uniformity. sexual effect

Inactive Publication Date: 2020-09-01
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Semi-solid metal injection molding machines are being used more and more widely because they can produce high-quality metal parts at low cost; however, the raw materials of existing semi-solid metal injection molding machines need to be mixed in advance, the alloy composition is fixed, and cannot The on-line adjustment of the alloy composition can only produce metal parts with a single alloy composition; when switching to produce parts with different alloy compositions, it is necessary to re-proportion and mix the semi-solid slurry, clean the pressure chamber, etc., which will lead to waste at the head and tail Increase, efficiency decrease, yield decrease

Method used

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  • A multi-metal injection molding system and method with on-line adjustable alloy composition
  • A multi-metal injection molding system and method with on-line adjustable alloy composition
  • A multi-metal injection molding system and method with on-line adjustable alloy composition

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Embodiment 1

[0048] The structure of the multi-metal injection molding system with online adjustable alloy composition is as follows: figure 1 As shown, it consists of a mechanical part and a control part;

[0049] The structure of the mechanical part is as figure 2 As shown, it includes a plurality of injection devices 8, a plurality of injection devices 9, a transition module 7, a mixing module 6 and a mold 5;

[0050] The control part is composed of the main control computer and the operation console equipped with PLC;

[0051] The mold 5, the mixing module 6 and the transition module 7 are simultaneously located in the fixed plate 4 and arranged from top to bottom;

[0052] Transition module 7 is structured as Figure 6 and 7 As shown; a plurality of transition chamber inlet passages 30 are provided to communicate the transition chamber 29 with the outside of the transition module 7; each transition chamber inlet passage 30 is downward from the transition chamber 7 to the outside,...

Embodiment 2

[0089] Adopt the device of embodiment 1, replace the mold and get rid of the residual metal in the transition chamber and the mixing chamber, and reset the preset temperature according to the above-mentioned method according to the melting point temperature and mass percentage of each alloy raw material, according to the solidification state density of each alloy composition and The mass percentage resets the propulsion speed as described above, and then performs multi-metal injection molding again;

[0090] Method is with embodiment 1, and difference is:

[0091] (1) According to the composition of the target alloy ZL105 alloy casting, the mass percentages of the three alloy raw materials are 55%, 15% and 35% respectively;

[0092] (2) Industrial pure aluminum is M 0 , more than 50% of the total mass of all alloy raw materials, expressed in M 0 The melting point temperature of industrial pure aluminum is 660°C as the preset temperature;

[0093] (3) The propulsion speeds o...

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Abstract

The invention discloses a multi-metal injection molding system and method capable of online adjusting alloy compositions. The multi-metal injection molding system comprises a plurality of injection devices, a plurality of pressure injection devices, a transition module, a mixing module and a mold. Transition chamber entryways are downward from a transition chamber to the outside, and an included angle between the axes of the transition chamber entryways and the horizontal plane is beta. The axes of pressure chambers of the multiple pressure injection devices are extension lines of the diameterof a same circle, and the center of the circle is located on the axis of the transition chamber. The multi-metal injection molding method comprises the steps that (1) alloy raw materials are prepared; (2) a crucible and the pressure injection devices are preheated; (3) the alloy raw materials are melted and poured into liquid storage tanks; (4) preset temperatures of the transition chamber and amixing chamber are calculated; (5) the stroke of each injection hydraulic cylinder is set; (6) an advance speed is set; (7) electromagnetic stirring is performed in the mixing chamber, and the transition chamber and the mixing chamber are heated to the preset temperatures; and (8) pressure injection hydraulic cylinders of the pressure injection devices are started until multi-metal injection molding is completed. The multi-metal injection molding method improves the stability and uniformity of the alloy compositions in different time periods.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to a multi-metal injection molding system and method with online adjustable alloy components. Background technique [0002] Metal injection molding technology has the advantages of forming complex-shaped metal parts at one time, low scrap rate, high production efficiency, and easy automation. It is widely used in the preparation of small and complex-shaped metal parts; metal injection molding technology can be divided into liquid state according to the form of raw materials. Metal injection molding technology, powder metallurgy injection molding technology, semi-solid metal injection molding technology. [0003] Among them, the liquid metal injection molding technology directly injects liquid metal into the mold, and obtains the final product after cooling, demoulding and surface treatment. Poor; powder metallurgy injection molding technology is a molding technology developed on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/08B22D17/32B22D17/30B22D17/20
Inventor 李琦孙祥坤吴健包丽谷宇
Owner NORTHEASTERN UNIV LIAONING
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