Aluminum or magnesium alloy casting sand core removing device and method
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A cleaning device and a technology for magnesium alloys, which are applied in the field of sand core cleaning devices, can solve the problems of difficulty in cleaning sand cores of aluminum or magnesium alloy castings, long cleaning cycles, etc., and achieve the effects of easy control, good cleaning effect and low energy consumption
Active Publication Date: 2015-05-20
HUAZHONG UNIV OF SCI & TECH
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[0014] The invention provides a sand core cleaning device for aluminum or magnesium alloy castings, and at the same time provides its sand core cleaning method, which solves the problems of difficulty in cleaning sand
Method used
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Embodiment 1
[0057] Embodiment 1: be used for the cleaning of water-soluble sand core, comprise the steps:
[0058] (1) Soaking step: Hang the aluminum alloy casting to be cleaned into the cleaning tank from the upper part of the sand core cleaning device, contact the bottom end of the pressure rod of the buffer component with the casting, and press the casting; then inject clean water until the entire sand core is submerged , soak for 30 minutes;
[0059] (2) Vibration step: start the left and right vibrating motors to drive the cleaning tank and the casting to vibrate. The exciting force of the vibrating motor is 1800N, vibrate for 20 minutes, and the softened, dissolved and broken sand cores are discharged from the inner cavity of the casting;
[0060] (3) Ultrasonic impact step: Insert the ultrasonic concentrator into the cleaning solution, close to the sand core of the casting, the ultrasonic power is 2000W, and the ultrasonic cleaning time is 10 minutes, to clean the sand core that i...
Embodiment 2
[0062] Embodiment 2: Used for cleaning water-soluble sand cores.
[0063] The difference with embodiment 1 is: in the step (2), the excitation force of the vibration motor is adjusted to 3000N, and the vibration is 10 minutes; in the step (3), the power of the ultrasonic wave is 1000W, and the cleaning time is 40 minutes.
Embodiment 3
[0064] Embodiment 3: for the cleaning of resin sand core.
[0065] The difference with Example 1 is: in the step (1), the casting is a magnesium alloy casting, and the cleaning solution is a 1% NaOH alkali solution, soaked for 60 minutes; in the step (3), the power of the ultrasonic wave is 1000W, and the cleaning time is 20 minutes .
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Abstract
The invention relates to a sand core removing device and method, in particular to an aluminum or magnesium alloy casting sand core removing device and method. The aluminum or magnesium alloy casting sand core removing device and method solve the problems that in the prior art, thin-walled complex aluminum or magnesium alloy casting sand core removing is difficult and the removing period is long, and are used for efficiently removing thin-walled complex aluminum or magnesium alloy casting sand cores. The aluminum or magnesium alloy casting sand core removing device comprises a casting compressing assembly and a mechanical vibrating assembly, and further comprises an ultrasonic wave removing assembly. The aluminum or magnesium alloy casting sand core removing method comprises the steps of soaking, vibration and ultrasonic wave impacting. The aluminum or magnesium alloy casting sand core removing device is simple in structure, low in energy consumption and easy to control. The aluminum or magnesium alloy casting sand core removing device and method integrate the effects of chemical dissolution, vibration crushing and ultrasonic wave cavitation removing, and are good in casting cleaning effect, high in efficiency and applicable to efficiently removing thin-walled complex aluminum or magnesium alloy casting sand cores.
Description
technical field [0001] The invention belongs to a sand core cleaning device and method, and is suitable for efficient cleaning of sand cores for aluminum or magnesium alloy complex thin-walled castings. Background technique [0002] With the continuous development of aerospace, national defense, automobile industry and other industries, castings are becoming more and more lightweight and precise, and the demand for magnesium-aluminum alloy thin-walled castings is increasing. Most magnesium-aluminum alloy thin-walled castings often have complex inner cavity structures or thin, curved, and long hole structures, and the sand cores are often combined sand cores, which makes the post-casting cleaning of castings very difficult. [0003] At present, common sand core cleaning methods can be divided into two categories: wet method and dry method: wet cleaning includes hydraulic sand cleaning, water blast sand cleaning, electro-hydraulic sand cleaning and chemical sand cleaning, etc....
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