Method for manufacturing electric heating plate

Abstract

The invention discloses a method for manufacturing an electric heating plate, comprising the following processing steps: (1) evenly mixing high-alumina cement, high-alumina fireclay, high-alumina aggregate and quartz sand, and then adding an amount of water to enable the mixture to be pasty; (2) adopting a pressure machine to press the mixture into a heating plate; (3) evenly mixing high-alumina fireclay and quartz sand, and then adding an amount of water to enable the mixture to be pasty; (4) adding an amount of materials obtained in the step 3 after a heating filament is added to the heating plate, enabling the heating filament to be completely covered; (5) evenly mixing high-alumina cement, temperature-resistance clay and river sand, and then adding an amount of water to enable the mixture to be pasty; (6) enabling the materials obtained in the step 5 to be covered on the surface of the heating plate so as to enable the surface of the heating plate to be smooth; (7) and naturally drying the heating plate until the heating plate is solidified. The electric heating plate manufactured by the process can collect and store heat generated by resistance wires, and therefore, the goal of heat reutilization is effectively achieved, and the process can be widely applied to manufacturing the electric heating plates of heating equipment of electric cookers, electric food warmers and the like.

Description

technical field [0001] The invention relates to a manufacturing method of an electric heating plate. Background technique [0002] At present, the electric heating plates at the bottom of general electric rice cookers and electric heating pans use insulating and heat-conducting materials to fix the resistance wire in the metal tube, and then the metal tube and the bottom heating plate are processed as one by die-casting technology, relying on the principle of thermal conductivity to directly heat the heating plate. The pan is heated. The main disadvantages of general electric heaters are as follows: 1. Most of the heat generated by the lower part of the heating plate and its surroundings is dissipated in the external environment, and the heat utilization rate is low, accounting for only about 40%-50%; 2. When the heating object is heated to a certain temperature, the temperature of the heating plate drops rapidly after the power is turned off, and the heat preservation perf...

AI Technical Summary

Problems solved by technology

In the above-mentioned processing process, there are four processes that may produce scrap products, and the scrap rate is high; casting processing requires heating, which wastes energy; in addition, because high-temperature heating will generate a lot of pollution and pollute the environment, it does not meet the environmental protection requirements advocated by the state; and in In the above-mentioned traditional processing flow, about 500-1000 grams of aluminum or other metal materials are needed to produce a general type of heating plate; in addition, a large amount of waste materials will be generated in the machining process of the heater body, which wastes metal materials