A low-foaming cleaner for crimped electrical contacts

By using a low-foaming cleaning agent with a specific composition, the problems of high foam, residue, and poor environmental performance of rivet-type electrical contacts are solved, achieving efficient cleaning and environmentally friendly results. It is suitable for cleaning equipment such as high-voltage switches and circuit breakers.

CN122214092APending Publication Date: 2026-06-16ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
Filing Date
2026-03-23
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing cleaning agents have problems such as high foaming, residue, poor environmental performance, and low cleaning efficiency when cleaning rivet-type electrical contacts, which affect equipment performance and reliability.

Method used

A low-foaming cleaning agent composed of trisodium phosphate, propylene glycol, disodium ethylenediaminetetraacetate, sodium lauryl ether sulfate, plant extracts, aqueous dispersion of nano-silica, ethanol, and acetone is used for cleaning rivet-type electrical contacts, preferably with the addition of tea tree oil and a composition of nano-silica with a particle size of 10-50 nm.

Benefits of technology

It achieves low-foaming and high-efficiency cleaning, with low COD value in wastewater. The cleaning effect is significantly better than traditional cleaning agents, and the contact resistance is reduced. It is suitable for online or offline cleaning of equipment such as high-voltage switches and circuit breakers.

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Abstract

The present application provides a kind of low foam cleaning agent for rivet type electrical contact, the low foam cleaning agent of the present application shows significant low foam, high cleaning capacity and environmental protection when cleaning rivet type electrical contact.Experiment data shows that the cleaning agent of the present application is in the process of use Foam height≤12% (measuring cup method), the foam is very low during cleaning process, the cleaning effect is significantly better than traditional cleaning agent, and the COD value of waste water after cleaning is far lower than the national standard, which can be rinsed one step;The removal rate of oil stain, oxide layer and metal particles is 100%, the contact resistance is reduced by 7-10% compared with before cleaning;Waste water COD is 15-20 mg L⁻¹, far lower than the market control sample (110-120 mg L⁻¹).The present application has the advantages of low foam, high efficiency, environmental protection and rinsing-free, and is suitable for online or offline cleaning of rivet type electrical contact of high voltage switch, circuit breaker and the like, and has important application value and market prospect.
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