How “corona rings”manufacturing？Factory show you Aluminum Pipe/Tube bending machines working process

Описание: https://www.artisanmake.com/aluminum-...
corona rings also names“grading rings”，one kind of Electrical Fittings, adopted in Composite Insulator，HV surge Arresters，hollow bushings，hollow Composite Insulators，such as 66KV、220 Kv polymeric Insulators.
Electric Power Accessories Manufacturer
Artisan industry trading (Nantong) CO.,LTD
https://www.artisanmake.com
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corona rings is one of the Composite Insulator's accessories.

LATU's composite insulator line includes line insulators comprised of line rod,line post, traction line type and line spacer, station insu-lators comprised of outdoor solid core, indoor solid core type, post and tension hollow post and tension rod, insulating bushing comprised of oil impregnated paper condenser wall bushing and dry type condenser wall bushing. Moreover , shed booster for station insulation, feeding rod for locomotive and dry type polymer current transformer are also available.
The shed housing polymer for composite insulator is prepared using specific composition mixing developed by experts for years, contributing the highest grade of tracking and corrosion resistance in conformance with IEC standard, which shows no apparent degra-dation after artificial accelerate ageing for 1000h and natural exposure test for 15years.
polymer insulator are manufactured with unique one - piece injection molding technique, excluding possibility of interface feakdown. Amain frouble which may destroy the normal operation of insulators. The unique gluing connection of line rod insulator with metal getting keeps FRP rod intact, providing the highest reliability of insulator in respect of its mechanical performance with practically no degradation even in environment of high temperature or severe cold.

The composite insulator, characteristic of small size, light weight, high mechanical strength, shatter-free, easy handling, well shock-resistance,pollution-resistance and minor maintenance, grows fast as a new generation of inslator.

Insulator with specific parameters other than those listed hereafter is required by customer, it can be supplied by technical agreement.
Normal service conditions
A) Ambient air temperature within the range of -40℃ to +50℃.
b) Altitude not exceeding 1500m.
c) Frequency of the A.C. Power supply not less than 48Hz and not exceeding 62Hz.
d) Maximum wind speed not exceeding 35m/s.
e) Earthquake intensity not exceeding 8 degrees.

Characteristics:

Small volume and light weight,easy to transport and install.

The superior in performance and high intensity mechanical enhance reliability of power line.
Extraordinary hydrophobic and resistance to contamination.
Long-duration resistance aging and leakage tracking.