CN101664278A - Method for manufacturing electric heating plate - Google Patents

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 heatingplate, 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 thelike.

Description

A kind of preparation method of electric heating plate

Technical field

The present invention relates to a kind of preparation method of electric heating plate.

Background technology

At present, bottom electrical heating plates such as general electric cooker, electric food warmer adopt resistance wire are fixed in the metal tube with insulating heat-conduction material, adopt extrusion process to be processed as one metal tube and bottom heating plate again, rely on the heat conductivity principle directly heating plate to be heated.The main bad point of general electric heater shows following several respects: 1, the heating plate bottom reaches the heat major part that is produced all around and distributes externally environment, and heat utilization efficiency is low, probably only accounts for about 40%-50%; 2, be heated to uniform temperature when heating thing, the heating plate temperature descends soon behind the deenergization, and heat-insulating property is poor, and insulation then can only be interrupted and connects power supply heating plate is heated as needs, and the waste electric energy does not meet the requirements of saving energy that country advocates.3, METAL HEATING PROCESS dish processing characteristics requires height, needs the high temperature heating to waste energy in work flow, and its main work flow is: the tubing that 1, copper, aluminium, iron or compo pipe material is pulled into used specification.2, resistance wire is placed in the middle of the tubing with special equipment, fills full magnesia powder, the sealing two ends.3, check whether leak electricity, then scrap as electric leakage.4, compress qualified tubing with draw equipment.7, check whether leak electricity, then scrap as electric leakage.8, the heating fine aluminium is heating element pah body with it with qualified tubing die casting for aluminium water.9, incite somebody to action body machine add-on type pah.10, check whether leak electricity, then scrap as electric leakage.In above-mentioned processing process, there are four procedures may produce scrap, the percent defective height; Casting processing needs heating, wastes energy; Because the high temperature heating can produce a large amount of the pollution, contaminated environment does not meet the environmental protection requirement that country advocates in addition; And in above-mentioned traditional work flow, the heat-generating disc of producing a general model need consume aluminium or other metal material of about 500-1000 gram; In addition, heating element body pah can produce a large amount of waste materials in the mechanical processing technique section, the waste metal material.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides the preparation method that a kind of energy heat energy storage continues the electric heating plate of heating.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of preparation method of electric heating plate, processing step is as follows:

1): become umber to be quality group: alumina cement: 2.5～4 parts, high-alumina chamotte: 3.5～5 parts, bauxites aggregate: 1～2 part, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

2): adopt 100 tons of forcing presses that the material that step 1) obtains is pressed into heat-generating disc, again it is dried naturally to solidifying;

3): become umber to be quality group: high-alumina chamotte: 3.5～5 parts, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

4): add the material that an amount of step 3) obtains after in heat-generating disc, putting into heating wire, make heating wire cover fully;

5): become umber to be quality group: alumina cement: 2.5～4 parts, heatproof mud: 2～3 parts, granularity are: 2.5～4 parts in 200～400 purpose river sand, evenly mix the back and add an amount of water and form pasty state;

6): the material that the heat-generating disc surface coverage step 5) that obtains in step 4) obtains makes the heat-generating disc surfacing;

7): the heat-generating disc that obtains in step 6) dries naturally to solidifying.

The invention has the beneficial effects as follows: the heat collection that the electric heating plate of making by this technology can produce resistance wire also stores, effectively realize the purpose that recuperation of heat utilizes, compare with general electric heater, have the long characteristics of temperature retention time under the situation of not consuming electric power, can keep food to seethe with excitement continuously in addition at fluidizing point, if be used on the electric cooker sustainable boiling 30-40 minute, if be used on the electric pressure cooking saucepan sustainable boiling 60 minutes, the nutrition that can't destroy food can be not burned food yet.At normal temperatures, can be incubated 3-4 hour food is reached more than 50 ℃, have characteristics such as energy-conservation, not power consumption, temperature retention time are long, in addition,, in work flow, not pollute the environment, also waste material not because draw materials environmental protection, convenience when making this product.Thereby the electric heating plate that can be widely used in firing equipments such as electric cooker, electric food warmer is made.

The specific embodiment

A kind of preparation method of electric heating plate, processing step is as follows:

1): become umber to be quality group: alumina cement: 2.5～4 parts, high-alumina chamotte: 3.5～5 parts, bauxites aggregate: 1～2 part, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

2): adopt 100 tons of forcing presses that the material that step 1) obtains is pressed into heat-generating disc, again it is dried naturally to solidifying;

3): become umber to be quality group: high-alumina chamotte: 3.5～5 parts, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

4): add the material that an amount of step 3) obtains after in heat-generating disc, putting into heating wire, make heating wire cover fully;

5): become umber to be quality group: alumina cement: 2.5～4 parts, heatproof mud: 2～3 parts, granularity are: 2.5～4 parts in 200～400 purpose river sand, evenly mix the back and add an amount of water and form pasty state;

6): the material that the heat-generating disc surface coverage step 5) that obtains in step 4) obtains makes the heat-generating disc surfacing;

7): the heat-generating disc that obtains in step 6) dries naturally to solidifying.

For ease of the present invention is further understood, now describe the present invention in conjunction with specific embodiments.

A kind of preparation method of electric heating plate, processing step is as follows:

1): become umber to be quality group: alumina cement: 3 parts, high-alumina chamotte: 4 parts, bauxites aggregate: 1.5 parts, granularity are: 1.5 parts of 300 purpose quartz sands, evenly mix the back and add an amount of water and form pasty state;

2): adopt 100 tons of forcing presses that the material that step 1) obtains is pressed into heat-generating disc, again it is dried naturally to solidifying;

3): become umber to be quality group: high-alumina chamotte: 4 parts, granularity are: 1.5 parts of 300 purpose quartz sands, evenly mix the back and add an amount of water and form pasty state;

4): add the material that an amount of step 3) obtains after in heat-generating disc, putting into heating wire, make heating wire cover fully;

5): become umber to be quality group: alumina cement: 3 parts, heatproof mud: 2.5 parts, granularity are: 3 parts in 300 purpose river sand, evenly mix the back and add an amount of water and form pasty state;

6): the material that the heat-generating disc surface coverage step 5) that obtains in step 4) obtains makes the heat-generating disc surfacing;

7): the heat-generating disc that obtains in step 6) dries naturally to solidifying.

In above-mentioned technology manufacturing process, preparation method is simple, convenient, and the waste product of generation is few, does not spend Surface Machining and wastes metal material; Material requested (as: quartz sand, river sand, heatproof mud, alumina cement etc.) draws materials conveniently, with low cost, cost only be the traditional heating dish used 10; The heat-generating disc of producing a general model only needs aluminium or the about 50-100 gram of other metal material, has saved a large amount of metal materials; Need not heat, not produce any refuse, effectively preserve the ecological environment, thereby can reach the environmental protection requirement that country advocates.

In addition, the electric heating plate of making by this technology, by in electric cooker embodiment, when cooking, water temperature reaches preset temperature (about 80 ℃) and need not water boiling, this moment deenergization, heat-storage heat-preserving type electric heater can will be collected the heat of returning and continues to send by being arranged on the heat accumulation insulating barrier, and heat is strengthened gradually in 10 minutes, until the water boiling meal is boiled; When pot congee Baoshang, water temperature reaches preset temperature (about 90 ℃) and need not the water boiling, deenergization, and heat-storage heat-preserving type electric heater can will be collected the heat of returning and continues to send by being arranged on the heat accumulation insulating barrier, and water is in fluidized state about 30 minutes.Owing in this product, be provided with insulating, at normal temperatures, can be incubated 3-4 hour food is reached more than 50 ℃.From executing the example as can be seen of the above,, also reach the requirements of saving energy that country advocates by the electric heating plate that this technology is made.

Also have, in process of production, resistance heating wire and extraneous hermetically sealed mode, the good seal performance of adopting.In use can not lose efficacy because of resistance wire and air catalytic oxidation, quality is guaranteed, dependable performance, long service life.Electric heating plate safety, energy-saving and environmental protection, dependable performance, the long service life of making in a word by above-mentioned technology, thus the electric heating plate that can be widely used in firing equipments such as electric cooker, electric food warmer is made.

Claims (1)

1. the preparation method of an electric heating plate, it is characterized in that: processing step is as follows:

1): become umber to be quality group: alumina cement: 2.5～4 parts, high-alumina chamotte: 3.5～5 parts, bauxites aggregate: 1～2 part, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

2): adopt 100 tons of forcing presses that the material that step 1) obtains is pressed into heat-generating disc, again it is dried naturally to solidifying;

3): become umber to be quality group: high-alumina chamotte: 3.5～5 parts, granularity are: 1～2 part of 200～400 purpose quartz sand, evenly mix the back and add an amount of water and form pasty state;

4): add the material that an amount of step 3) obtains after in heat-generating disc, putting into heating wire, make heating wire cover fully;

5): become umber to be quality group: alumina cement: 2.5～4 parts, heatproof mud: 2～3 parts, granularity are: 2.5～4 parts in 200～400 purpose river sand, evenly mix the back and add an amount of water and form pasty state;

6): the material that the heat-generating disc surface coverage step 5) that obtains in step 4) obtains makes the heat-generating disc surfacing;

7): the heat-generating disc that obtains in step 6) dries naturally to solidifying.