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Small-diameter and high-power flexible heating cable and preparation method thereof

A heating cable, high-power technology, applied in the direction of heating element material, heating element shape, etc., can solve the problems of unsatisfactory working effect, inconvenient use and installation, large size and other problems, achieve good processability, improve work efficiency, Effect of High Current Carrying Capability

Inactive Publication Date: 2011-08-24
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for some high-power heating cables used in a small space environment, the armored structure type is basically used. However, due to its relatively large size and low power, it is not easy to use and install, and the working effect is not good. Ideally, there is no better solution

Method used

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  • Small-diameter and high-power flexible heating cable and preparation method thereof
  • Small-diameter and high-power flexible heating cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , a small-diameter high-power flexible heating cable, characterized in that: the innermost layer of the small-diameter high-power flexible heating cable is a heating alloy wire core wire 3; the outer heating alloy wire core wire 3 is wrapped with at least Two layers of insulating fiber layers 2 are coated with a high-temperature-resistant bonding and sealing coating layer 1 on the outside of the insulating fiber layers 2 .

[0028] The wrapping directions of the two adjacent insulating fiber layers 2 are opposite. see figure 1 Middle wrapping direction A.

[0029] The diameter of the heating alloy wire core wire 3 is 0.5 mm; the heating alloy wire core wire 3 is 0Cr27Al7Mo2 alloy with a resistivity of 1.53 μΩ.m.

[0030] The layer of insulating fiber layer 2 is made of monofilament diameter of 5 μm, SiO 2 It is wrapped with high-purity fine quartz fibers with a content ≥99.95%.

[0031] The high-temperature-resistant bonding and sealing coating layer 1...

Embodiment 2

[0039] Others are the same as in Example 1, the diameter of the heating alloy wire core wire 3 is 0.5 mm; the alloy is a 6J22 alloy with a resistivity of 1.33 μΩ.m;

[0040] The layer of insulating fiber layer 2 is made of monofilament diameter of 6 μm, SiO 2 It is wrapped with high-purity micro-fine quartz fibers with a content ≥99.95%;

[0041] The winding speed voltage in the step b is 60V;

[0042] The spraying pressure in the step c is 0.5 MPa.

Embodiment 3

[0044] Others are the same as in Example 1, the diameter of the heating alloy wire core wire 3 is 0.5 mm; the alloy is a 1Cr20Al3 alloy with a resistivity of 1.23 μΩ.m;

[0045] The layer of insulating fiber layer 2 is made of monofilament diameter of 5 μm, SiO 2 It is wrapped with high-purity micro-fine quartz fibers with a content ≥99.95%;

[0046] The winding speed voltage in the step b is 80V;

[0047] The spraying pressure in the step c is 0.3 MPa.

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Abstract

The invention discloses a small-diameter and high-power flexible heating cable, and a preparation method thereof. The small-diameter and high-power flexible heating cable is provided with a heating alloy wire core line in an innermost layer; the external part of the heating alloy wire core line is lapped with an insulating fiber layer; and the outer surface of the insulating fiber layer is coated with a high temperature resistance splicing and sealing coating layer. The preparation method comprises the following steps: a) electrothermal alloy is subjected to fine wire drawing processing and is machined into the heating alloy wire core line with the diameter of 0.4-0.7 mm, and the heating alloy wire core line is subjected to high temperature annealing and softening in the hydrogen protective atmosphere; b) the heating alloy wire core line is lapped with the multi-layer insulating layer, and is made into a small high-power special heating cable with the diameter smaller than Phi 1.0 mm; c) the high temperature resistance splicing and sealing coating is sprayed onto the surface of the insulating fiber layer of the heating cable; and d) the heating cable is aired at the room temperature and is placed in an oven, and after 1-hour heat preservation at 200 DEG C and solidification process, the small-diameter and high-power flexible heating cable can be obtained. In the invention, the small high-power special heating cable with the diameter smaller than Phi 1.0 mm can be manufactured; and the design requirement of generating high power instantly in a narrow space can be met, and the ice removal and prevention efficiencies and effects of relative components can be improved.

Description

technical field [0001] The invention relates to a heating cable, in particular to a small-diameter, high-power flexible heating cable and a preparation method thereof. Background technique [0002] Heating cables are mainly of two types: limited current type and constant current type in terms of performance, and can be divided into armored and unarmoured structures in terms of structure. According to different use positions, working environments and technical requirements, these two types can be used respectively. Types of heating cables. At present, for some high-power heating cables used in a small space environment, the armored structure type is basically used. However, due to its relatively large size and low power, it is not easy to use and install, and the working effect is not good. Ideally, there is no better solution yet. Contents of the invention [0003] The object of the present invention is to address the deficiencies of the prior art, and provide a small-di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/56H05B3/10
Inventor 郭卫民潘雄
Owner CHONGQING MATERIALS RES INST
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