High-performance counterweight concrete for balance block of washing machine and preparation method of high-performance counterweight concrete

Abstract

The invention relates to high-performance counterweight concrete for a balance block of a washing machine and a preparation method of the concrete. The counterweight concrete is prepared from, by weight, 500-1000 parts of cement, 0-300 parts of mineral admixture, 0-800 parts of common aggregate, 1500-4000 parts of counterweight material, 1-30 parts of fiber, 1-20 parts of additive and 150-220 parts of water, wherein the counterweight material is selected from one or combination of more of iron ore, iron sand and fine iron powder. By optimizing the formula, adopting a relatively low water cement ratio and matching with the specific counterweight material, fiber and additives, the prepared concrete mixture has a high flow state characteristic and can realize compact forming without vibration, the hardened concrete has excellent mechanical properties, the compressive strength reaches 120 MPa or above, and the breaking strength reaches 18 MPa or above; the flexural load of the prepared balance block reaches 5kN or more; and the density of the material can be regulated and controlled by changing the components and proportion, the density of the concrete is 3300-4500 kg / m<3>, and the requirements for the mechanical property and density of the balance block are met. Compared with a cast iron balance block, the cost is reduced by 60-85%.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a high-performance counterweight concrete for a balance block of a washing machine and a preparation method thereof. Background technique [0002] The drum washing machine has a variety of internal parts that will cause weight imbalance. At the same time, during the washing and dehydration process, the gravity of the laundry will also cause the drum to be biased, causing the drum to collide with the outer drum, thereby damaging the outer drum and the drum. In order to ensure that the washing machine maintains a dynamic balance under the high-speed rotation of the drum and prevents the phenomenon of overweight, a balance weight is usually set on the outer cylinder of the washing machine. The balance weight is an arc-shaped high-density component whose shape matches the shape of the outer cylinder. , fixed on the outer cylinder by screws, relying on its own gravity to ...

AI Technical Summary

Problems solved by technology

[0003] The balance blocks of existing mid- and low-end washing machines are made of ordinary counterweight concrete materials, while high-end washing machines have relatively high restrictions on the internal space due to factors such as ultra-thinness and many internal configurations, so cast iron materials with higher density are mostly used. It has the advantages of small space occupation and superior mechanical properties, but the cost of cast iron is nearly 10 times higher than that of concrete materials, which greatly affects the production cost of washing machine products

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