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Pouring system for casting and precision casting method for improving quality of magnesium alloy casting

A gating system and magnesium alloy technology, which are applied in casting gating system and precision casting field to achieve the effect of improving quality, easy slag inclusion and improving purity

Active Publication Date: 2022-01-11
HEBEI GANGYAN DEKAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the quality defects of casting slag inclusions caused by existing pouring, and provide a casting gating system and a precision casting method for improving the quality of magnesium alloy castings. The gating system can greatly improve casting slag inclusions and improve casting quality

Method used

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  • Pouring system for casting and precision casting method for improving quality of magnesium alloy casting
  • Pouring system for casting and precision casting method for improving quality of magnesium alloy casting
  • Pouring system for casting and precision casting method for improving quality of magnesium alloy casting

Examples

Experimental program
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Effect test

Embodiment 1

[0065] Such as figure 1 The casting gating system shown includes a main runner 1, a transverse runner 3, several branch runners 7, a casting molding shell 2 and a feeding riser 4 above it, and is arranged in the main runner 1 and is connected with the The main runner 1 is parallel to the special runner 6, and the bottom of the special runner 6 is close to the transverse runner 3. Several branch runners 7 are perpendicular to the main runner 1 and connect the casting forming shell 2 and the feeding riser 4 to the main runner. Road 1 is connected. The length of the main runner 1 is 550mm. The inner diameter of the special runner 6 is 30mm, and the length is 600mm. The ratio of the inner diameter of the special runner 6 to the inner diameter of the main runner 1 is 50:100. The surface of the special runner 6 is evenly provided with through holes 61, the total surface area of ​​the through holes 61 accounts for 5% of the surface area of ​​the special runner 6, and the diameter...

Embodiment 2

[0074] Carry out as in Example 1, except that the ratio of the inner diameter of the special runner 6 to the inner diameter of the main runner 1 is 20:100.

[0075] The direction of the temperature field in this embodiment is the same as that of Embodiment 1, and the gradient distribution is similar to that of Embodiment 1.

[0076] The obtained magnesium alloy castings, through X-ray inspection, show that the metallurgical quality reaches the level of HB7780-2005 Class I castings. Local loose level one, but meet the standard requirements.

Embodiment 3

[0078] Carry out according to embodiment 1, the difference is that the total surface area of ​​the through holes 61 accounts for 3% of the surface area of ​​the dedicated runner 6 .

[0079] The direction of the temperature field in this embodiment is the same as that of Embodiment 1, and the gradient distribution is similar to that of Embodiment 1.

[0080] The obtained magnesium alloy castings, through X-ray inspection, show that the metallurgical quality reaches the level of HB7780-2005 Class I castings. Local loose level one, but meet the standard requirements.

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Abstract

The invention belongs to the technical field of casting, and particularly relates to a pouring system for casting and a precision casting method for improving the quality of a magnesium alloy casting. The pouring system comprises a main pouring gate, a transverse pouring gate and a casting forming shell, the transverse pouring gate communicates the bottom of the main pouring gate with the bottom of the casting forming shell, the pouring system further comprises a special pouring gate, the special pouring gate is arranged in the interior of the main pouring gate and extends in the axial direction of the main pouring gate, and the bottom of the special pouring gate is close to the transverse pouring gate. According to the pouring system, a metal melt can be stable after reaching the bottom, slag gas cannot be brought into a casting when the metal melt enters the casting forming shell, and therefore, the quality of the casting is improved, the problem that slag gas is easily brought into the melt in the pouring process is solved, and the method is especially suitable for magnesium alloy precision casting.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a pouring system for casting and a precision casting method for improving the quality of magnesium alloy castings. Background technique [0002] In the prior art, there are two problems in the pouring of magnesium alloys: [0003] 1. Magnesium alloys are lively and easy to react with air to generate slag gas (such as magnesium oxide, which is a loose and porous impurity). The surface of a general magnesium alloy melt will inevitably have an oxide layer. Therefore, when When casting magnesium alloy, the magnesium alloy melt will wrap the slag gas, which will easily bring the slag gas into the casting, thereby reducing the quality of the casting. [0004] 2. The pouring system of magnesium alloy is bottom injection type, and its structure is as follows image 3 As shown, it includes the main runner, the casting molding shell and the horizontal runner connected at the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08
CPCB22C9/082B22C9/088
Inventor 邵冲吴海龙杨武强张国驰邢长勇王子阳朱小平王凯莫雪妍贾林玥
Owner HEBEI GANGYAN DEKAI TECH CO LTD