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Dechlorination method of iron cultural relics

A cultural relic and dechlorination technology, applied in the field of dechlorination of ferrous cultural relics, can solve the problems of insufficient dechlorination, long dechlorination cycle of ferrous cultural relics, corrosion in the dechlorination process, etc., which is beneficial to the preservation of cultural relics and solves the problem of continued corrosion , the effect of stabilizing rust products

Inactive Publication Date: 2015-09-16
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of long dechlorination period of iron cultural relics, insufficient dechlorination, and continuous corrosion during the dechlorination process, the present invention provides a fast, effective, more thorough dechlorination, and is more conducive to the preservation of cultural relics. Dechlorination method

Method used

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  • Dechlorination method of iron cultural relics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The cultural relic to be dechlorinated is a cylindrical unearthed iron component with a length of 16 cm and a diameter of about 3 cm. It is severely corroded and contains chloride after testing. The surface of the iron components has been cleaned to remove floating rust and dirt, and it is ready for dechlorination.

[0034]Prepare raw rice paper, tear it into shreds by hand, soak it in pure water (requiring the conductivity of pure water to be less than 10μS / cm) to prepare pulp. Wash the rice paper and test the conductivity of the water. If the conductivity is higher than 20μS / cm, wring out the pulp, replace it with pure water and wash it again until the conductivity is lower than 20μS / cm, and filter out excess water to obtain pulp. Connect the iron components with copper wires, wrap the pulp on the surface of the cultural relics, squeeze the pulp as much as possible by hand to squeeze out the water. Then wrap the stainless steel wire around the pulp, connect the coppe...

Embodiment 2

[0036] The cultural relics to be dechlorinated are 127mm × 35mm × 149mm iron components salvaged from the seabed, which are severely mineralized and contain high chloride content. After cleaning the surface of the components, they are ready for dechlorination treatment.

[0037] Prepare raw rice paper, tear it into shreds by hand, soak it in pure water (requires the conductivity of pure water to be less than 10μS / cm) and soak it into pulp. Wash the rice paper and test the conductivity of the water. If the conductivity is higher than 20μS / cm, wring out the pulp, replace it with pure water and wash it again until the conductivity is lower than 20μS / cm, and filter out excess water to obtain pulp. Connect the iron components with copper wires, wrap the pulp on the surface of the cultural relics, squeeze the pulp as much as possible by hand to squeeze out the water.

[0038] A low-voltage DC stabilized power supply is used for dechlorination, and a rheostat is used to adjust the co...

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Abstract

The invention is a dechlorination method of iron cultural relics. The dechlorination method comprises the following steps: iron cultural relics are coated with paper pulp and are used as the cathode, a stainless steel wire or mesh winds the surface of the paper pulp and is used as the anode, and the iron cultural relics are subjected to the electrochemical dechlorination under potentiostatic conditions. The dechlorination effect is judged by detecting the content of chlorine in the paper pulp or the conductivity of the paper pulp soaking solution after dechlorination. The invention provides a rapid and efficient composite dechlorination method which is thorough in dechlorination, not only can be applied to the rapid deep dechlorination treatment of small-size iron cultural relics, but also can be applied to the dechlorination of large-size iron cultural relics. The dechlorination method further solves the problem of continued corrosion in the dechlorination of large-size iron cultural relics, and is in favor of preserving the cultural relics and prolonging the life of the cultural relics.

Description

technical field [0001] The invention relates to a method for protecting iron cultural relics, in particular to a dechlorination treatment method for iron cultural relics. Background technique [0002] Most of the iron cultural relics unearthed or salvaged from the seabed are very severely corroded, and the corrosion products contain a large amount of harmful rust such as chloride. Although iron cultural relics will undergo protective treatments such as cleaning, dechlorination, and corrosion inhibition, if the chlorides in these rust products cannot be removed thoroughly, it is easy to cause the cultural relics to continue to corrode during the preservation process. [0003] Among the harmful rust caused by the corrosion products of iron cultural relics, chloride ions are the most likely to induce the continued corrosion of cultural relics. This is mainly because the chloride ion has a small radius, strong penetrating ability and electronegativity. It can destroy or replace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F15/00
Inventor 胡钢
Owner PEKING UNIV
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