Lead-based alloy for cable sheath and production technology thereof

A lead-based alloy and production process technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of unstable composition and performance, unstable processing load, loss of manufacturers, etc., to improve moisture-proof and waterproof performance, and improve consistency and compactness, the effect of prolonging the service life

Inactive Publication Date: 2019-09-10
江苏海宝电池科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these alloys have unstable composition and performance. Occasionally, the processing load is unstable during use, and sometimes even the automatic shutdown problem caused by sudden load changes, as well as the problem of pull-off and crack defects in the sheath, etc. Cause greater losses to manufacturers

Method used

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  • Lead-based alloy for cable sheath and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A lead-based alloy for cable sheath, which is prepared by melting the following components by weight percentage: antimony 0.2%, tin 0.4%, silver 0.025%, copper 0.02%, bismuth 0.04%, and the rest are lead, and lead in lead is 0.04%. Net content ≥99.994%, net content of antimony in antimony ≥99.0%, net content of tin in tin ≥99.9%, net content of bismuth in bismuth ≥99.997%, net content of silver in silver ≥99.99%, net content of copper in copper Content ≥ 99.95%.

[0013] The production process of the above-mentioned lead-based alloy for cable sheathing, the specific operation steps are as follows: adding a formula amount of lead into a lead smelting furnace, heating to 400-450 ° C, the lead is completely melted, adding an appropriate amount of slag remover, Turn on the mixer to stir, let the slag remover and lead slag fully react to powder, use special tooling to salvage the lead slag floating on the surface of the lead liquid, raise the temperature to 400-450 ℃, add th...

Embodiment 2

[0015] A lead-based alloy for cable sheath, which is prepared by melting the following components by weight percentage: antimony 0.1%, tin 0.45%, silver 0.02%, copper 0.03%, bismuth 0.05%, and the rest are lead, and lead in lead is 0.05%. Net content ≥99.994%, net content of antimony in antimony ≥99.0%, net content of tin in tin ≥99.9%, net content of bismuth in bismuth ≥99.997%, net content of silver in silver ≥99.99%, net content of copper in copper Content ≥ 99.95%.

[0016] The production process of the above-mentioned lead-based alloy for cable sheathing, the specific operation steps are as follows: adding a formula amount of lead into a lead smelting furnace, heating to 400-450 ° C, the lead is completely melted, adding an appropriate amount of slag remover, Turn on the mixer to stir, let the slag remover and lead slag fully react to powder, use special tooling to salvage the lead slag floating on the surface of the lead liquid, raise the temperature to 400-450 ℃, add th...

Embodiment 3

[0018] A lead-based alloy for cable sheath, which is prepared by melting the following components by weight percentage: antimony 0.25%, tin 0.5%, silver 0.025%, copper 0.01%, bismuth 0.07%, and the rest are lead, and lead in lead is 0.07%. Net content ≥99.994%, net content of antimony in antimony ≥99.0%, net content of tin in tin ≥99.9%, net content of bismuth in bismuth ≥99.997%, net content of silver in silver ≥99.99%, net content of copper in copper Content ≥ 99.95%.

[0019] The production process of the above-mentioned lead-based alloy for cable sheathing, the specific operation steps are as follows: adding a formula amount of lead into a lead smelting furnace, heating to 400-450 ° C, the lead is completely melted, adding an appropriate amount of slag remover, Turn on the mixer to stir, let the slag remover and lead slag fully react to powder, use special tooling to salvage the lead slag floating on the surface of the lead liquid, raise the temperature to 400-450 ℃, add t...

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Abstract

The invention discloses a lead-based alloy for a cable sheath. The lead-based alloy for the cable sheath is manufactured from the ingredients comprising, by weight, 0.1-0.4% of antimony, 0.3-0.6% of tin, silver 0.02-0.05% of silver, 0.01-0.03% of copper, 0.04-0.08% of bismuth and the balance lead. The lead-based alloy for the cable sheath has the advantages that the bismuth and copper elements caneffectively improve the processing properties, such as strength, flexibility and ductility, of the lead-based alloy but increase the brittleness of the alloy at the same time, and the addition of tincan significantly improve the brittleness caused by the addition of antimony and copper and also improve the fluidity and flexibility of lead; the addition of silver can significantly improve the corrosion resistance of the lead-base alloy. Because the bismuth and the lead have similar atomic sizes, the bismuth and the lead can be mixed at any ratio, the bismuth and the lead can form a substitutional solid solution, so that the consistency and compactness of the lead-based alloy can be effectively improved, and the moisture-proof and waterproof properties of the lead-based alloy are improved.The elements of antimony, tin, copper, silver and antimony all can be well compatible with the lead, the ingredients are evenly distributed and stable, and the lead-based alloy is good in consistency.

Description

technical field [0001] The invention relates to the field of cables, in particular to a lead-based alloy for a cable sheath and a production process thereof. Background technique [0002] Power cables will add a protective layer to the outer layer of the cable. The protective layer is also called a protective sheath. The protective sheath is divided into an inner sheath and an outer sheath. The function of the inner sheath is mainly to protect the insulating layer of the money core from mechanical damage by external force, and to prevent the immersion of water and the outflow of the impregnating agent. The role of the outer sheath is corrosion protection, mechanical protection and shielding. The use of lead-based alloys to manufacture power cable sheaths has a long history. At present, the main lead-based sheath alloys used are lead-antimony-tin alloys, lead-antimony-tin-tellurium alloys, and lead-antimony-copper alloys. However, these alloys have unstable compositions and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/06C22C11/08C22C1/02H01B7/20
CPCC22C1/02C22C11/06C22C11/08H01B7/20
Inventor 杨海涛沈煜婷沈维新李青
Owner 江苏海宝电池科技有限公司
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