Optimized crystallization heat preservation furnace

Abstract

The invention relates to an optimized crystallization heat preservation furnace, and relates to heat preservation and optimized casting microstructure. The optimized crystallization heat preservationfurnace is characterized in that a soft heat preservation pouring material and a hollow ball are used as a main body heat preservation furnace wall, a zirconium armor brick is anchored on the inner wall of the main body heat preservation furnace wall to be used as a non-stick aluminum lining layer, and the zirconium armor brick belongs to a permanent ultra-long service life die-casting furnace lining material. Therefore, the novel heat preservation furnace not only possesses better heat preservation performance, but also possesses an extraordinary service life, and is a heat preservation furnace which is not sticky to aluminum. On the basis of the advantages of being good in heat preservation, long in service life and non-sticky to aluminum, the optimized crystallization heat preservationfurnace is additionally provided with the molten aluminum self-resistance thermode, electric energy is converted into heat energy through the self-resistivity of molten aluminum, and therefore, the energy utilization efficiency is high, and the structure of the furnace body is very simple; the resistance thermode is also an electric pulse throwing electronic device, thrown electrons are beneficialto manufacturing a casting body with a finer microstructure through pressure casting, and therefore, the surface quality pass percent of a casting hub can be increased, and the mechanical performancecan be obviously improved.

Description

technical field [0001] The invention relates to heat preservation and optimization of casting microstructure, especially microstructure of heat preservation furnace and wheel hub for die casting. Background technique [0002] There is an application number: 2019102354107, which is called a patent application for "high-temperature shock-absorbing insulation block", and another application number: 201910396404. Material" thermal insulation refractory material, the thermal insulation refractory material named "soft thermal insulation castable material" is based on the material selection and ingredients of the "elastic block" material described in the patent number: 201510564465.4 furnace door flexible sealing ring device, preferably A kind of material processed by less water or no water pouring process, a kind of soft thermal insulation refractory material with certain plasticity and resilience. The material has achieved very ideal thermal insulation effect in an industrial exp...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the existing die-casting furnaces are: a. The baking time of the new furnace is too long to go online for more than 20 days; b. The pouring furnace is 100% cracked and the life is short for 3-5 years; c. The die-casting furnace is also used to be called a holding furnace. However, the holding furnace does not need to be equipped with a 36 kWh heater, which consumes a lot of electricity and is a big tiger group of electricity. d. The lining material of the poured die-casting furnace or the holding furnace sticks to aluminum and slag, and the aluminum slag is cleaned. The furnace hall is very hard. If this problem is not solved, there will be obstacles for die-casting to enter the 5G Internet of Things era. e. The cast-molded die-casting furnace or holding furnace is equipped with a 36 kWh heater. It is difficult to maintain a constant temperature in the range of 700±5°C. f .The temperature of the space above the liquid surface of aluminum water is high, and the oxidation loss of aluminum liquid is greater than 850°C. Aluminum liquid 650°C is the critical temperature for oxidation speed

[0007] The electric pulse can help metal crystallization refinement. After it was proposed in the United States, many universities have papers on it, and there are many arguments and conclusions. Most of the related experiments are said to prove that metal crystallization can help crystallization. Some also say that the experimental results sometimes exist and sometimes do not. Most of the theories, viewpoints and conclusions are relatively complicated, and it is not easy to directly guide the practice of technological improvement in existing traditional industries.

The present invention focuses on researching the technical improvement practice of the existing traditional foundry industry, but there has been no technological breakthrough for many years. Recently, it has been found that there is no simple and easy-to-understand practical theoretical guidance. , an easy-to-understand theory

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