WO2020103398A1

WO2020103398A1 - Magnetically conductive heating body manufacturing method using all-glass container

Info

Publication number: WO2020103398A1
Application number: PCT/CN2019/084352
Authority: WO
Inventors: 熊强
Original assignee: 熊强
Priority date: 2018-11-21
Filing date: 2019-04-25
Publication date: 2020-05-28
Also published as: CN109316046B; CN109316046A

Abstract

A magnetically conductive heating body manufacturing method using an all-glass container. Said method comprising the following steps: step one, picking an all-glass container; step two, washing and drying; step three, pre-processing the all-glass container; step four, using a magnetically conductive material to perform screen printing on the all-glass container; step five, performing cooling processing on an inert gas; step six, performing quenching process; and step seven, performing natural cooling. The magnetically conductive material is a magnetically conductive slurry, comprising the following components by mass percent: 0.2-0.4% of rhenium, 20-30% of iron nickel alloy powder, 55-65% of silver, and the remainder being a glaze slurry. The all-glass magnetically conductive heating body manufactured by the present method realizes high power heating and a short time for heating, and that the glass is not easily broken; moreover, moreover, said heating body is able to satisfy people's demands for hygiene, health, speed and an easy life, and the market prospect is wide.

Description

Method for manufacturing magnetic conductive heating body with all-glassware

Technical field

The invention relates to the technical field of electromagnetic heater vessels, in particular to a method for manufacturing a magnetically conductive heating body from an all-glass vessel.

Background technique

At present, due to the use of all-glass health pots, kettles and tea makers on the market, they are easy to break during use, and the power is small, cannot exceed 400W, and the liquid heating time is too long to meet people's fast life rhythm and consumption It is difficult to accept. In view of the above-mentioned problems, the present invention overcomes this technical bottleneck, realizes high-power heating, has a fast heating speed, and the glass is not easy to break; at the same time, it can meet people's needs for hygiene, health, fast and convenient life, and has a broad market prospect.

Summary of the invention

In order to solve the above-mentioned problems in the background art, an object of the present invention is to provide a method for manufacturing a magnetically conductive heating body using all-glassware.

To achieve the above objectives, the technical solutions adopted by the present invention are:

The invention discloses a method for manufacturing a magnetically conductive heating body using all-glassware, which includes the following steps:

Step 1: Select all glassware: select all glassware according to production needs;

Step two: Wash and dry: clean all glassware and use it after drying;

Step 3: Pretreatment of all glassware: Place the dried all glassware in the oven and gradually increase the temperature to 100 ° C, and keep it at a constant temperature;

Step 4: All-glassware silk-screen magnetically conductive material: Use a silk-screen machine to screen-print the magnetically conductive material on the bottom of the all-glassware that needs magnetic conduction to generate heat;

Step 5: Inert gas cooling treatment: use liquid nitrogen to cool the inert gas to -35 ℃ for use;

Step 6: Quenching treatment: Put the glassware after screen printing in step 4 into a high-temperature furnace to raise the temperature to 700 ℃ and keep it at a constant temperature for 1-2h, then blow the inert gas in step 5 evenly on this glassware, Make it cool down sharply to within 65 ℃ within 60S;

Step 7. Natural cooling: The all-glass vessel treated in step 6 is then naturally cooled to room temperature to obtain a high-temperature all-glass magnetic heating vessel.

In the above technical solution, the magnetically conductive material is a magnetically conductive paste, which includes the following mass percentage components: 0.2-0.4% rhenium, 20-30% iron-nickel alloy powder, 55-65% silver, and the balance is glaze slurry .

In the above technical solution, the preparation method of the magnetically conductive paste is prepared by uniformly mixing the powders of rhenium, iron-nickel alloy powder and silver that have passed 3000 meshes or more, and then uniformly mixing with the glaze slurry.

In the above technical solution, the all-glass vessel is an all-glass pot or all-glass cup, and the thickness of the all-glass vessel is 1.2 mm-2.5 mm.

In the above technical solution, in the second step, the cleaning of the all-glassware is specifically after the all-glassware is cleaned with a cleaning agent, and then placed in the container of the ultrasonic cleaning machine, and the ultrasonic cleaning time is 15-20 min.

Compared with the prior art, the beneficial effects of the present invention are:

1. Compared with the existing glassware heater, the all-glass magnetic heating element produced by the method provided by the invention realizes high-power heating, the heating time is short and the glass is not easy to break.

2. Through quenching treatment, the molecular structure of the magnetically permeable material silk-screened on the bottom of all glassware is rearranged within 60 seconds to increase its strength and resistance to sudden changes in heat resistance by a factor of 3-5, and solve the problem of magnetic permeability The uneven distribution of the material leads to uneven heat conduction and slow heating. At the same time, inert gas is used to prevent the oxygen in the air from oxidizing the magnetically conductive material in a high-temperature environment, resulting in power attenuation.

2. The all-glass magnetic heating element uses all-glass utensils, and the heating time is short, which can meet the needs of people for hygiene, health, fast and convenient life, and the market prospect is broad.

detailed description

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following further describes how the present invention is implemented in conjunction with specific embodiments.

Examples

This embodiment discloses a method for manufacturing a magnetically conductive heating body using all-glassware, which includes the following steps:

Step 1: Select all glassware: select all glassware of various shapes according to production needs;

Step two: Wash and dry: clean all glassware and use it after drying;

Step 3: Pretreatment of all glassware: Place the dried all glassware in the oven and gradually raise the temperature to 700 ° C, and keep it at a constant temperature;

Step 4: All-glass glass screen magnetically conductive material: Use a screen printing machine to screen-print the magnetically conductive material around the bottom and lower part of the all-glass container that needs magnetic conduction to generate heat;

Step 6: Quenching treatment: Put the glassware after screen printing in step 4 into a high-temperature furnace to raise the temperature to 700 ℃ and keep it at a constant temperature for 1-2h, then blow the inert gas in step 5 evenly on this glassware Make it cool down sharply to within 65 ℃ within 60S; adopting inert gas as cooling gas can prevent oxygen in the air from oxidizing the magnetically conductive material under high temperature environment, resulting in power attenuation.

Wherein, the magnetically conductive material is a magnetically conductive paste, which includes the following components in mass percentage: 0.2-0.4% rhenium, 20-30% iron-nickel alloy powder, 55-65% silver, and the balance is glaze slurry. The preparation method of the magnetically conductive slurry is prepared by uniformly mixing the powders of rhenium, iron-nickel alloy powder and silver which have passed 3000 mesh or more, and then uniformly mixing with the glaze slurry.

In this embodiment, the all-glass vessel is an all-glass pot or all-glass cup, and the thickness of the all-glass vessel is 1.2mm-2.5mm, and the thickness of the all-glass vessel is thinner to make the quenching cool to within 65 degrees The time is shorter (within 40-60S).

In this embodiment, in step two, the cleaning of all glassware is specifically after washing all glassware with a cleaning agent, and then putting it into the container of the ultrasonic cleaning machine. The ultrasonic cleaning time is 15-20min to ensure that the bottom of all glassware is clean , Making the bottom of the all-glassware more closely fit the magnetically conductive paste, and the magnetically conductive paste is more uniformly printed on the bottom of the all-glassware. Among them, the cleaning agent is a commonly used detergent for glassware on the market.

Comparative example

Compared with Example 1, the difference is that there is no step five: inert gas cooling treatment; and in step six, after the silk-screened all-glassware is put back into a high-temperature furnace and heated to 700 ° C and kept at a constant temperature for 1-2, no The inert gas is used for quenching treatment, so that the temperature of all glassware is slowly reduced to within 65 ° C.

Test example

The 6000 all-glass magnetic heating elements made in the examples were used as the experimental group; the 500 all-glass magnetic heating elements made in the comparative example were used as the control group 1; the 500 glassware heaters on the market were used as the control group 2. After adding water to the vessels of the experimental group, the control group 1 and the control group 2, heating at 800w or 1600w (half the number of each experimental group, control group 1 and control group 2 in 800w and 1600w); and statistical experiment Rupture of group, control group 1 and control group 2.

Table 1 Statistical table of the rupture condition when heated at 800w or 1200w

It can be seen from Table 1 that the experimental group under high-power (800-1600w) heating conditions, the glass did not break in 6000 experiments; while the control group 1 under 800-1600w heating conditions, the average breakage rate was 5.8%; the control group 2 was Under the heating condition of 800-1600w, the average breakage rate is 38.8%;

Compared with the control group 2, the all-glass magnetic heating element made by the method provided by the present invention is heated under high power (800-1600w), and the heating speed is fast without cracking, indicating that the whole method made by the method provided by the present invention The bottom of the glass magnetic heating element is heated uniformly and conducts heat quickly, which overcomes the problem that the heating bottom of the existing glassware heater is not uniform and the heating bottom is easily broken;

Compared with the control group 1, the experimental group shows that the quenching treatment in the method provided by the present invention can make the internal distribution of the magnetic conductive paste at the bottom of the all-glass magnetic conductive heating body uniform, thereby achieving uniform and fast thermal conduction.

Finally, the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be implemented Modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims

A method for manufacturing a magnetically conductive heating body with all-glass utensils, characterized in that it includes the following steps:

Step 1: Select all glassware: select all glassware according to production needs;

Step two: Wash and dry: clean all glassware and use it after drying;

Step 3: Pretreatment of all glassware: Place the dried all glassware in the oven and gradually increase the temperature to 100 ° C, and keep it at a constant temperature;

Step 4: All-glassware silk-screen magnetically conductive material: Use a silk-screen machine to screen-print the magnetically conductive material on the bottom of the all-glassware that needs magnetic conduction to generate heat;

Step 5: Inert gas cooling treatment: use liquid nitrogen to cool the inert gas to -35 ℃ for use;

Step 6: Quenching treatment: Put the glassware after screen printing in step 4 into a high-temperature furnace to raise the temperature to 700 ℃ and keep it at a constant temperature for 1-2h, then blow the inert gas in step 5 evenly on this glassware, Make it cool down sharply to within 65 ℃ within 60S;

Step 7. Natural cooling: The all-glass utensils processed in step 6 are then naturally cooled to room temperature to obtain high-temperature-resistant all-glass magnetic heating utensils.
The method for manufacturing a magnetically conductive heating body with all-glassware according to claim 1, wherein the magnetically conductive material is a magnetically conductive paste, which includes the following mass percentage components: 0.2-0.4% rhenium, 20-30% iron-nickel alloy powder, 55-65% silver, the balance is glaze paste.
The method for manufacturing a magnetically conductive heating element with all-glassware according to claim 2, characterized in that the method of preparing the magnetically conductive paste is: rhenium, iron-nickel alloy powder, silver The powder is mixed evenly and then mixed with glaze slurry to prepare.
The method for manufacturing a magnetically permeable heating element with an all-glass vessel according to claim 1, wherein the all-glass vessel is an all-glass pot or an all-glass cup, and the thickness of the all-glass vessel is 1.2 mm -2.5mm.
The method for manufacturing a magnetically permeable heating element using all-glass utensils according to claim 1, in step two, the all-glass utensils cleaning specifically involves washing all-glass utensils with a cleaning agent, and then putting them into the container of the ultrasonic cleaning machine The medium ultrasonic cleaning time is 15-20min.