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Bi-metal water-cooling casting mold for preparing aluminum alloy capable of achieving hydrolytic degradation

A technology for casting molds and aluminum alloys, which is applied in the field of preparing bimetallic water-cooled casting molds for water-degradable aluminum alloys, to achieve the effects of optimizing the microstructure, shortening the casting cycle, and reducing manufacturing costs

Inactive Publication Date: 2017-03-15
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The beneficial effect of the present invention is: the present invention is aimed at the water-degradable aluminum alloy material used for the fracturing ball in the oil field fracturing process, adopts bimetal to solve the sealing connection problem of the circulating waterway in the water-cooled mold, and at the same time realizes the controllable cooling speed of the casting, Optimize the microstructure of castings to obtain castings with good mechanical properties, and reduce the casting cracks caused by internal stress caused by the internal stress of the casting mold cavity in the solidification process of the castings, improve the surface quality of castings and prolong the service life of the mold

Method used

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  • Bi-metal water-cooling casting mold for preparing aluminum alloy capable of achieving hydrolytic degradation
  • Bi-metal water-cooling casting mold for preparing aluminum alloy capable of achieving hydrolytic degradation
  • Bi-metal water-cooling casting mold for preparing aluminum alloy capable of achieving hydrolytic degradation

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Effect test

Embodiment 1

[0013] Example 1: Preparation of a bimetallic water-cooled casting mold for water-degradable aluminum alloys, the structure of which includes: an inner casting mold cavity 4, an outer metal of the casting mold 3, an annular water-cooling cavity 1, a metal ring 2 at the connecting part, and an inlet water flow regulating valve 5 and the water outlet flow regulating valve 6. When working, place the mold on the metal iron block (thickness greater than 10mm) gasket and fix it, connect the pipes to the water inlet and outlet, and connect with tap water, and then pour the molten metal liquid into the inner casting model In cavity 4, adjust the gears of valves 5 and 6 according to the optimum cooling rate required for casting crystallization at the same time as pouring, and control the water flow rate and water flow rate, so as to adjust the cooling rate to achieve the optimum crystallization temperature requirement and obtain the microstructure Small and well-behaved castings. Afte...

Embodiment 2

[0014] Embodiment 2: According to the description of the shape, material and details of the present invention in the specification, a bimetallic water-cooled casting mold meeting the requirements and having a certain size was manufactured. The specific dimensions are: mold height H=330mm, mold outer diameter D=140mm, inner diameter of the upper end of the truncated cone d1=100mm, inner diameter of the lower end of the truncated cone d1=90mm, inclination angle of the truncated cone β=1°.

Embodiment 3

[0015] Embodiment 3: According to the description of the shape, material and details of the present invention in the specification, a bimetallic water-cooled casting mold meeting the requirements and having a certain size was manufactured. The specific dimensions are: mold height H=330mm, mold outer diameter D=140mm, inner diameter of the upper end of the truncated cone d1=59.34mm, inner diameter of the lower end of the truncated cone d1=49.18mm, and the inclination angle of the truncated cone β=2°.

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Abstract

The invention discloses a bi-metal water-cooling casting mold for preparing aluminum alloy capable of achieving hydrolytic degradation. The bi-metal water-cooling casting mold comprises an internal mold casting cavity (4), casting mold external metal (3), a water inlet flow regulating valve (5) and a water outlet flow regulating valve (6). A metal ring (2) is in sealing connection with the internal mold casting cavity (4) and the casting mold external metal (3) by means of welding or interference fit so that an annular water-cooling cavity (1) can be formed. The water outlet flow regulating valve (6) and the water inlet flow regulating valve (5) communicating with the annular water-cooling cavity (1) are arranged at the upper end and the lower end of the casting mold external metal (3) separately. The water flow velocity and water flow rate can be controlled through the water inlet flow regulating valve (5) and the water outlet flow regulating valve (6), the internal mold casting cavity (4) is provided with an upper end mold casting chamfer (alpha), and the internal mold casting cavity (4) has a tilting angle (beta) in an outward mode relative to the vertical plane.

Description

technical field [0001] The invention relates to casting mold technology, in particular to the bimetal water-cooling casting mold technology for preparing water-degradable aluminum alloy. Background technique [0002] With the advancement of oilfield exploitation technology, fracturing technology has been applied more and more. In the traditional fracturing process, there are two types of sealing balls used in the ball sliding sleeve: steel balls and composite balls. During the fracturing process, the phenomenon that the fracturing fluid and oil flow are not smooth due to the ball stuck in the ball seat often occurs. To solve this problem, a water-degradable high-strength aluminum alloy material has been developed. Due to oil field fracturing technology, there are special requirements for this material, such as high strength, easy hydrolysis, and the correlation between hydrolysis rate and water temperature. Therefore, the smelting and preparation of water-degradable high-...

Claims

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Application Information

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IPC IPC(8): B22C9/06B22D27/04
CPCB22C9/06B22D27/04
Inventor 张建斌姚冰楠
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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