Iron-nickel alloy and pure iron composite electromagnetic conductive contact and manufacturing method thereof

Abstract

The invention discloses an iron-nickel alloy and pure iron composite electromagnetic conductive contact and a manufacturing method thereof. The composite electromagnetic conductive contact is composedof two parts: a core body and a coil. The core body is a composite core body which takes permalloy as a core, takes pure iron as a shell, takes an aniline modified carbon fiber aluminum core composite wire as a conductor, and takes polymethyl silicone resin, silicon dioxide p-polymethyl vinyl silicone rubber and starch grafted sodium acrylate mechanical blending secondary vulcanized rubber as packaging and curing materials. The coil is formed by mechanically blending an aniline modified carbon fiber aluminum core composite wire wound on the surface of a core body, polymethyl silicone resin for curing the coil, silicon dioxide p-polymethyl vinyl silicone rubber and starch grafted sodium acrylate with primary vulcanized rubber. The electromagnetic conductive contact is large in magnetic conductivity, small in coercive force, soft in nature, light in weight, resistant to fatigue, impact and corrosion and good in attachment.

Description

technical field [0001] The invention relates to the technical field of electrical devices, in particular to an iron-nickel alloy and pure iron composite electromagnetic conductive contact and a manufacturing method thereof. Background technique [0002] Combining carbon-based materials with magnetic materials to prepare microwave-absorbing materials that meet the requirements of "thin, light, wide, and strong" has become a hot research topic for scholars at home and abroad. In switching electrical appliances, electrical contacts directly undertake the function of breaking and connecting circuits and carrying normal operating current or carrying overload current within a certain period of time. The key functions of various electrical appliances, such as the on-off capability of power distribution appliances, control electrical appliances The electrical life of the relay and the reliability of the relay all depend on the working performance and quality of the contacts. At the...

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Problems solved by technology

At the same time, the contact is also the weakest link and the part that is prone to failure in the switchgear: once the contact system does not work normally, such as a short circuit in the power system, the high-voltage circuit breaker contacts refuse to disconnect, which will cause extremely serious consequences.

[0003] However, most of the electromagnetic materials for contacts on the market are soft magnetic metals or alloys with simple structures. Due to the limited p