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Lead-based alloy for high-performance sheath and preparation method thereof

A lead-based alloy, high-performance technology, applied in the field of lead-based alloys for high-performance sheaths and its preparation, can solve the problems of unstable processing load, unstable alloy performance, loss of manufacturers, etc., and achieve the problem of not easy segregation, alloy Good consistency, the effect of improving brittleness

Active Publication Date: 2021-08-06
江苏海宝新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these alloys have unstable performance. Occasionally, the processing load is unstable during use, and sometimes even the automatic shutdown problem caused by the sudden change of the load will cause problems such as brittle fracture and crack defects in the sheath, causing serious damage to the manufacturer. big loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A lead-based alloy for a high-performance sheath, which is prepared by melting the following components by weight percentage: 0.4% antimony, 0.4% tin, 0.04% sodium, 0.06% lanthanum, and the rest is lead, where lanthanum is a lanthanum master alloy , The lanthanum master alloy includes the following components by weight percentage: 0.9%-1.1% lanthanum, and the rest is electrolytic lead. The net content of sodium metal is ≥99%, the net content of antimony is ≥99%, and the net content of tin is ≥99.9%;

[0018] The above-mentioned lead-based alloy for a high-performance sheath is prepared as follows:

[0019] a. Preparation of lanthanum master alloy: Add 990kg of electrolytic lead into the high temperature furnace, heat up to 580-620°C, remove the lead slag floating on the surface, continue to heat up to 800-850°C, put 10kg of metal lanthanum into high temperature The furnace feeds from the warehouse, vacuumizes the high-temperature furnace, and the vacuum reaches -0.1MPa...

Embodiment 2

[0022] A lead-based alloy for a high-performance sheath, which is prepared by melting the following components by weight percentage: 0.2% antimony, 0.8% tin, 0.02% sodium, 0.08% lanthanum, and the rest is lead, where lanthanum is a lanthanum master alloy , The lanthanum master alloy includes the following components by weight percentage: 0.9%-1.1% lanthanum, and the rest is electrolytic lead. The net content of sodium metal is ≥99%, the net content of antimony is ≥99%, and the net content of tin is ≥99.9%;

[0023] The above-mentioned lead-based alloy for a high-performance sheath is prepared as follows:

[0024] a. Preparation of lanthanum master alloy: Add 990kg of electrolytic lead into the high temperature furnace, heat up to 580-620°C, remove the lead slag floating on the surface, continue to heat up to 800-850°C, put 10kg of metal lanthanum into high temperature The furnace feeds from the warehouse, vacuumizes the high-temperature furnace, and the vacuum reaches -0.1MPa...

Embodiment 3

[0027]A lead-based alloy for a high-performance sheath, which is obtained by melting the following components by weight percentage: 0.5% antimony, 0.8% tin, 0.03% sodium, 0.06% lanthanum, and the rest is lead, where lanthanum is a lanthanum master alloy , The lanthanum master alloy includes the following components by weight percentage: 0.9%-1.1% lanthanum, and the rest is electrolytic lead. The net content of sodium metal is ≥99%, the net content of antimony is ≥99%, and the net content of tin is ≥99.9%;

[0028] The above-mentioned lead-based alloy for a high-performance sheath is prepared as follows:

[0029] a. Preparation of lanthanum master alloy: Add 990kg of electrolytic lead into the high temperature furnace, heat up to 580-620°C, remove the lead slag floating on the surface, continue to heat up to 800-850°C, put 10kg of metal lanthanum into high temperature The furnace feeds from the warehouse, vacuumizes the high-temperature furnace, and the vacuum reaches -0.1MPa,...

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Abstract

The invention discloses a lead-based alloy for a high-performance sheath and a preparation method thereof, which is prepared by melting the following components in weight percent: antimony 0.2-0.8%, tin 0.4-1.0%, sodium 0.02-0.06%, lanthanum 0.04‑0.08%, with the balance being lead. The advantages of the present invention are: the addition of sodium to the alloy can well remove the oxide slag and impurities such as calcium, aluminum and nickel in the lead, and reduce the alloy defects caused by the inclusion of oxide slag; the addition of antimony to the alloy can effectively improve the lead The strength and processing characteristics of the alloy, but it will also increase the brittleness of the alloy; the brittleness caused by the addition of antimony can be significantly improved by adding tin, and the fluidity and flexibility of lead can be improved at the same time; the addition of lanthanum can significantly improve the corrosion resistance of the alloy properties, improve the compactness of lead; antimony, tin, sodium, lanthanum and lead can be well melted, the components are evenly distributed, segregation is not easy to occur, the composition is stable, and the alloy has good consistency.

Description

technical field [0001] The invention relates to the field of lead alloys, in particular to a lead-based alloy for a high-performance sheath and a preparation method thereof. Background technique [0002] Submarine cables are cables wrapped in insulating material and laid on the seabed for telecommunications transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Modern undersea cables use fiber optics to transmit telephone and internet signals. In the manufacture of submarine cables, the copper conductors are first embedded in a jelly-like compound to ensure that the cables will not be damaged even if they come into contact with seawater. The cable is then encased in a lead alloy tube (inner sheath) to prevent the pressure of water from destroying it. It is then wrapped in a steel wire with a very high overall strength, placed in a copper tube (outer sheath), and finally covered with a protective layer of polyethylene mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C11/06C22C11/10C22C1/03
CPCC22C1/03C22C11/06C22C11/10
Inventor 杨海涛沈煜婷沈维新李青
Owner 江苏海宝新能源有限公司
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