WO2021051675A1

WO2021051675A1 - Fabrication process for ceramic rod heating wire

Info

Publication number: WO2021051675A1
Application number: PCT/CN2019/124747
Authority: WO
Inventors: 刘刚
Original assignee: 刘刚
Priority date: 2019-09-18
Filing date: 2019-12-12
Publication date: 2021-03-25
Also published as: CN110602811B; CN110602811A

Abstract

A fabrication process for a ceramic rod heating wire, which specifically relates to the technical field of ceramic rod heating wire fabrication. The specific fabrication steps are as follows: S1: preparing an electric heating wire (3), a hollow PVC insulated hard sleeve (2) and a hollow ceramic rod (1); S2: inserting one end of the electric heating wire (3) into the inner part of the PVC insulated hard sleeve (2), and winding the other end of the electric heating wire (3) around the outer end of the PVC insulated hard sleeve (2) to form a heating wire; and S3: sticking the heating wire with a thermal conductive adhesive (4) and then inserting same into the inner part of electric heating wire (3) for fixing. The ceramic rod heating wire is designed to have a diameter of 1.5-50 mm, has a small volume and is lightweight, is suitable for small, exquisite, thin and beautiful products, such as small or miniature-sized small household appliances or beauty tools, and has a wide range of applications. Refractory soil and glass fiber are added during the preparation of hollow ceramic rods (1), which effectively improves the insulation performance, mechanical strength and corrosion resistance of the ceramic rod heating wire, and effectively extends the service life of the ceramic rod heating wire.

Description

Manufacturing process of ceramic rod heating wire

Technical field

The invention relates to the technical field of ceramic rod heating wire production, more specifically, the invention relates to a ceramic rod heating wire production process.

Background technique

The working principle of the heating wire is the same as other metal heating elements. It is the electric heating phenomenon after the metal is energized. Electric heating means that after the current passes through the conductor, the current will generate a certain amount of heat and be transferred by the conductor. The heating wire itself is a metal conductor. After being energized, it will emit heat and provide heat energy. The diameter and thickness of the heating wire is a parameter related to the maximum use temperature. The larger the diameter of the heating wire, the easier it is to overcome the problem of deformation at high temperatures and prolong its service life. For operation below the maximum operating temperature, the diameter should be no less than 3mm, and the thickness of the sling should be no less than 2mm. The service life of the heating wire is largely related to the diameter and thickness of the heating wire. The heating wire is used in a high temperature environment, and the surface will be affected. A protective oxide film is formed. After a period of time, the oxide film will age and form a cyclic process of continuous generation and destruction. This process is the process of continuous consumption of elements in the electric furnace wire. The element content of the electric furnace wire with a larger diameter and thickness More, the service life will be longer.

Electric heating wires are mainly used in metallurgical machinery, medical, chemical, ceramics, electronics, electrical appliances, glass and other industrial heating equipment and civil heating appliances. According to their chemical element content and organizational structure, they can be divided into two categories: One is the iron-chromium-aluminum alloy series, and the other is the nickel-chromium alloy series. As electric heating materials, they have their own advantages and are widely used.

At present, the existing round rod-shaped heating rods on the market are too bulky, the diameter is too thick, and the smallest diameter can only be 5mm. If you want to design products less than 5mm, it cannot be installed. With the development of the market, Many people like small and exquisite, thin and beautiful products, such as small beauty tools or small home appliances, and the heating rods less than 5mm made on the market are all electric heating wires, so a ceramic rod heating wire production process is needed.

Summary of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the embodiment of the present invention provides a ceramic rod heating wire manufacturing process. By designing a ceramic rod heating wire with a diameter of 1.5-50mm, it is small in size and light in weight, and is suitable for small and exquisite, thin and beautiful. Products, such as small or micro small household appliances or beauty tools, have a wide range of applications.

In order to achieve the above object, the present invention provides the following technical solutions: a ceramic rod heating wire, including a hollow ceramic rod, the hollow ceramic rod is provided with a PVC insulating hard sleeve, and the PVC insulating hard sleeve extends from the hollow ceramic rod On one side, the hollow ceramic rod is provided with an electric heating wire, both ends of the electric heating wire extend out of one side of the hollow ceramic rod, one end of the electric heating wire is set inside the PVC insulating hard sleeve, and the other end of the electric heating wire is wound At the outer end of the PVC insulating hard sleeve, the hollow ceramic rod is filled with thermal conductive glue.

The present invention also includes a manufacturing process of ceramic rod heating wire, and the specific manufacturing steps are as follows:

S1. Prepare heating wires, hollow PVC insulated hard sleeves and hollow ceramic rods;

S2. Sleeve one end of the heating wire into the PVC insulated hard sleeve, and wind the other end of the heating wire around the outer end of the PVC insulated hard sleeve to form a heating wire;

S3. Stick the heating wire with thermal conductive glue and insert it into the heating wire for fixing.

In a preferred embodiment, in step S1, the preparation steps of the hollow ceramic rod are as follows:

a. Weigh 30-40 parts of alumina, 6-8 parts of silicon oxide, 6-8 parts of calcium oxide, 2-4 parts of magnesium oxide, 30-40 parts of refractory clay and 1-3 parts of glass fiber required for preparation;

b. Put the weighed materials into the grinder and grind them into powdered materials. After the grinding is completed, take out the powdered materials, and filter the powdered materials with a screen;

c. Put the powdery material into the mixer, and then add the silicone adhesive and liquid paraffin for mixing, so that the powdery material is bonded into a plastic solid material;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into the tunnel kiln for sintering and forming;

f. After sintering and forming, use a sander to smooth the inner and outer surfaces of the formed hollow ceramic rod.

In a preferred embodiment, the diameter of the hollow ceramic rod is 1.5-50 mm.

In a preferred embodiment, in step S1, a clean scouring pad is used to wipe clean the dust on the surface of the hollow ceramic rod, the PVC insulating hard sleeve and the heating wire.

In a preferred embodiment, the sintering temperature in step e is 1000-1200° C., and the time is 18-24 h.

In a preferred embodiment, after the inner and outer surfaces of the hollow ceramic rod are polished smooth in step f, the outer end of the hollow ceramic rod is sprayed with ceramic wear-resistant paint.

Technical effects and advantages of the present invention:

1. By designing the ceramic rod heating wire with a diameter of 1.5-50mm, the present invention is small in size and light in weight, and is suitable for small and exquisite, thin and beautiful products, such as small or micro small household appliances or beauty tools, and has a wide range of applications;

2. The present invention increases the heat resistance and thermal stability of the ceramic rod heating wire prepared by the present invention by adding refractory earth to the hollow ceramic rod. By adding glass fiber, the glass fiber has good insulation and heat resistance. It has the advantages of strong, good corrosion resistance and high mechanical strength, so the insulation performance, mechanical strength and corrosion resistance of the ceramic rod heating wire prepared by the invention are effectively improved, and the service life of the ceramic rod heating wire is effectively prolonged;

3. In the present invention, by spraying ceramic wear-resistant paint on the outer end of the hollow ceramic rod, the wear resistance of the ceramic rod heating wire prepared by the present invention is enhanced, and the service life of the ceramic rod heating wire is further prolonged.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is an assembly diagram of the PVC insulated hard sleeve and the heating wire of the present invention;

Figure 3 is an assembly diagram of the hollow ceramic rod, PVC insulated hard sleeve and heating wire of the present invention;

Figure 4 is an assembly diagram of the heating wire and electronic wire of the present invention;

Figure 5 is an assembly diagram of the hollow ceramic rod, heating wire and electronic wire of the present invention;

The reference signs are: 1 hollow ceramic rod, 2 PVC insulated hard sleeve, 3 electric heating wire, 4 thermal conductive glue, 5 electronic wire.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example 1:

The present invention provides a ceramic rod heating wire, including a hollow ceramic rod 1, the diameter of the hollow ceramic rod 1 is 1.5mm, the hollow ceramic rod 1 is provided with a PVC insulating hard sleeve 2 inside, the PVC insulating hard The sleeve 2 extends out of the hollow ceramic rod 1 side, the hollow ceramic rod 1 is provided with an electric heating wire 3 inside, and both ends of the electric heating wire 3 extend out of the hollow ceramic rod 1 side, and one end of the electric heating wire 3 is arranged at Inside the PVC insulating hard sleeve 2, the other end of the heating wire 3 is wound around the outer end of the PVC insulating hard sleeve 2, and the hollow ceramic rod 1 is filled with a thermal conductive glue 4.

The manufacturing process of ceramic rod heating wire is as follows:

S1. Prepare the heating wire 3, the hollow PVC insulating hard sleeve 2 and the hollow ceramic rod 1. Then use a clean scouring pad to wipe the dust on the surface of the hollow ceramic rod 1, the PVC insulating hard sleeve 2 and the heating wire 3. The preparation steps of the hollow ceramic rod 1 are as follows:

a. Weigh 30 parts of aluminum oxide, 6 parts of silicon oxide, 6 parts of calcium oxide, 2 parts of magnesium oxide, 30 parts of refractory soil and 1 part of glass fiber required for preparation;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into a tunnel kiln for sintering, the sintering temperature is 1000℃, and the time is 18h;

f. After sintering and forming, use a grinder to polish the inner and outer surfaces of the hollow ceramic rod 1 to be smooth, and after the grinding is smooth, spray ceramic wear-resistant paint on the outer end of the hollow ceramic rod 1;

S2. Sleeve one end of the heating wire 3 into the inside of the PVC insulating hard sleeve 2, and wind the other end of the heating wire 3 around the outer end of the PVC insulating hard sleeve 2 to form a heating wire, as shown in Figure 2;

S3. Stick the heating wire with the thermal conductive glue 4 and insert it into the heating wire 3 for fixing, as shown in FIG. 3.

Example 2:

The present invention provides a ceramic rod heating wire, comprising a hollow ceramic rod 1, the hollow ceramic rod 1 has a diameter of 10 mm, and the hollow ceramic rod 1 is provided with a PVC insulating hard sleeve 2 inside, and the PVC insulating hard sleeve The tube 2 extends out of the hollow ceramic rod 1 side, the hollow ceramic rod 1 is provided with an electric heating wire 3, both ends of the electric heating wire 3 extend out of the hollow ceramic rod 1 side, and one end of the electric heating wire 3 is set in PVC Inside the insulating hard sleeve 2, the other end of the heating wire 3 is wound around the outer end of the PVC insulating hard sleeve 2, and the hollow ceramic rod 1 is filled with a thermal conductive glue 4.

The manufacturing process of ceramic rod heating wire is as follows:

a. Weigh 34 parts of alumina, 6.5 parts of silicon oxide, 6.5 parts of calcium oxide, 2.5 parts of magnesium oxide, 34 parts of refractory soil and 1.5 parts of glass fiber required for preparation;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into a tunnel kiln for sintering, the sintering temperature is 1100℃, and the time is 20h;

Example 3:

The present invention provides a ceramic rod heating wire, comprising a hollow ceramic rod 1, the hollow ceramic rod 1 has a diameter of 30 mm, and the hollow ceramic rod 1 is provided with a PVC insulating hard sleeve 2 inside, and the PVC insulating hard sleeve The tube 2 extends out of the hollow ceramic rod 1 side, the hollow ceramic rod 1 is provided with an electric heating wire 3, both ends of the electric heating wire 3 extend out of the hollow ceramic rod 1 side, and one end of the electric heating wire 3 is set in PVC Inside the insulating hard sleeve 2, the other end of the heating wire 3 is wound around the outer end of the PVC insulating hard sleeve 2, and the hollow ceramic rod 1 is filled with a thermal conductive glue 4.

The manufacturing process of ceramic rod heating wire is as follows:

a. Weigh 36 parts of alumina, 7.5 parts of silicon oxide, 7.5 parts of calcium oxide, 3.5 parts of magnesium oxide, 36 parts of refractory soil and 2.5 parts of glass fiber required for preparation;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into a tunnel kiln for sintering, the sintering temperature is 1150℃, and the time is 22h;

Example 4:

The present invention provides a ceramic rod heating wire, which includes a hollow ceramic rod 1 having a diameter of 50 mm, and an electronic wire 5 is provided inside the hollow ceramic rod 1, and the electronic wire 5 extends out of the hollow ceramic On the side of the rod 1, the hollow ceramic rod 1 is provided with an electric heating wire 3, both ends of the electric heating wire 3 extend out of the hollow ceramic rod 1 side, and one end of the electric heating wire 3 is arranged inside the electronic wire 5. The other end of the heating wire 3 is wound around the outer end of the electronic wire 5 and welded to the electronic wire 5, and the hollow ceramic rod 1 is filled with a thermal conductive glue 4.

The manufacturing process of ceramic rod heating wire is as follows:

S1. Prepare the heating wire 3, the hollow electronic wire 5 and the hollow ceramic rod 1, and then use a clean scouring pad to wipe clean the dust on the surface of the hollow ceramic rod 1, the electronic wire 5 and the heating wire 3, the hollow ceramic rod 1 The preparation steps are as follows:

a. Weigh 40 parts of aluminum oxide, 8 parts of silicon oxide, 8 parts of calcium oxide, 4 parts of magnesium oxide, 40 parts of refractory soil and 3 parts of glass fiber required for preparation;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into a tunnel kiln for sintering, the sintering temperature is 1200℃, and the time is 24h;

S2. Sleeve one end of the heating wire 3 into the inside of the electronic wire 5, and wind the other end of the heating wire 3 around the outer end of the electronic wire 5 and weld it with the electronic wire 5 to form a heating wire, as shown in FIG. 4;

S3. Stick the heating wire with the thermal conductive glue 4 and insert it into the heating wire 3 for fixing, as shown in FIG. 5.

Example 5:

The mechanical strength and abrasion resistance of 120 ceramic rod heating wires prepared in the above Examples 1-4 were respectively tested, and the following data were obtained:

It can be seen from the above table that the mixing ratio of raw materials in Example 2 is moderate, and the ceramic rod heating wire obtained not only improves the mechanical strength, but also has higher wear resistance, and at the same time, it enhances its corrosion resistance. At the same time, it is smaller and more suitable. Small products have a wide range of applications.

Finally: the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention Within the scope of protection.

Claims

A ceramic rod heating wire, comprising a hollow ceramic rod (1), characterized in that: the hollow ceramic rod (1) is provided with a PVC insulating hard sleeve (2), and the PVC insulating hard sleeve (2) extends On the side of the hollow ceramic rod (1), the hollow ceramic rod (1) is provided with an electric heating wire (3), and both ends of the electric heating wire (3) extend out of the hollow ceramic rod (1) side. One end of the heating wire (3) is set inside the PVC insulating hard sleeve (2), the other end of the heating wire (3) is wound around the outer end of the PVC insulating hard sleeve (2), and the hollow ceramic rod (1) is filled inside There is thermal glue (4).
A manufacturing process of a ceramic rod heating wire is characterized in that: the specific manufacturing steps are as follows:

S1. Prepare heating wire (3), hollow PVC insulated hard sleeve (2) and hollow ceramic rod (1);

S2. Sleeve one end of the heating wire (3) into the PVC insulating hard sleeve (2), and wind the other end of the heating wire (3) around the outer end of the PVC insulating hard sleeve (2) to form a heating wire;

S3. Stick the heating wire with the thermal conductive glue (4) and insert it into the heating wire (3) for fixing.
A ceramic rod heating wire manufacturing process according to claim 2, characterized in that: in step S1, the preparation steps of the hollow ceramic rod (1) are as follows:

a. Weigh 30-40 parts of alumina, 6-8 parts of silicon oxide, 6-8 parts of calcium oxide, 2-4 parts of magnesium oxide, 30-40 parts of refractory clay and 1-3 parts of glass fiber required for preparation;

b. Put the weighed materials into the grinder and grind them into powdered materials. After the grinding is completed, take out the powdered materials, and filter the powdered materials with a screen;

c. Put the powdery material into the mixer, and then add the silicone adhesive and liquid paraffin for mixing, so that the powdery material is bonded into a plastic solid material;

d. Put the plastic solid material into the extruder for extrusion molding;

e. Put the material into the tunnel kiln for sintering and forming;

f. After sintering and forming, use a sander to smooth the inner and outer surfaces of the formed hollow ceramic rod (1).
A ceramic rod heating wire according to claim 1, wherein the diameter of the hollow ceramic rod (1) is 1.5-50 mm.
A ceramic rod heating wire manufacturing process according to claim 2, characterized in that: in step S1, a clean scouring pad is used to separate the hollow ceramic rod (1), the PVC insulating hard sleeve (2) and the heating wire ( 3) Wipe clean the dust on the surface.
A ceramic rod heating wire manufacturing process according to claim 3, wherein the sintering temperature in step e is 1000-1200°C, and the time is 18-24h.
A ceramic rod heating wire manufacturing process according to claim 3, characterized in that: in step f, after the inner and outer surfaces of the hollow ceramic rod (1) are polished smooth, the outer end of the hollow ceramic rod (1) is sprayed with ceramic resistant Polish the paint.