TRI-METAL CONTACTS RIVETS
This unique product, has been for the first time introduced in India by the PARADISE house and excellently serves the requisite purpose with crown of success. We have equipment capable to produce tri-metal contact rivets with diameter between 2.0 mm to 10 mm.
​
Over and above the advantages claimed by bi-metal contact rivets, it is double headed, with head tip layer and shank tip layer of precious contact material while the base material is OFHD Copper. The shank end will be rivetted over to form the second contact head,when in use.
​
Products in forms of rivet and disc can be available with perfect metallurgical bond having the precious contact materials layer thickness generally in 50% or any desired ratio to suit individual application.
Bimetal & Trimetal
Electrical Contacts
PRODUCTS
CONTACT SHAPE
Among Contactors, Rivets are the most popular for use in telecommunications, electronics and general purposes. Solid rivets are made entirely of precious metals. But in bi-metallic and tri-metallic rivets the actual contact portion is made of precious meterial while the rest is made of base metal (generally copper). and can also be supplied duly silver plated.
We manufacture and supply customised Silver Rods, Semi finished silver wires also as per the requirement of our customer.
SOLID CONTACT RIVETS
This type of contact is manufactured directly from wire by cold heading process as a result of which the shank remains soft for easy rivetting whilist the head becomes work-hardened.
​
The shank length can be easily varied but the shank diameter should be in right proportion to the size of head for avoiding wrinkles during cold forging operation. For satisfactory results, a sufficiently large shank diameter (generally 50% of the head diameter) should be selected to avoid undue increase of contact resistance during service.
BUTTON CONTACTS
These contacts are mostly used for thermostat, switches and industrial relays. This category of contact has contact material mainly fine silver, silver-Nickel, Silver-Cadmium Oxide welded properly on the second layer of easily weldable material like copper.
The contact layer is may be either flat or slightly spherical but the surface of the welding layer is shaped to facilitate proper welding.
TRI-METAL CONTACTS RIVETS
This unique product, has been for the first time introduced in India by the PARADISE house and excellently serves the requisite purpose with crown of success. We have equipment capable to produce tri-metal contact rivets with diameter between 2.0 mm to 10 mm.
​
Over and above the advantages claimed by bi-metal contact rivets, it is double headed, with head tip layer and shank tip layer of precious contact material while the base material is OFHD Copper. The shank end will be rivetted over to form the second contact head,when in use.
​
Products in forms of rivet and disc can be available with perfect metallurgical bond having the precious contact materials layer thickness generally in 50% or any desired ratio to suit individual application.
BIMETAL CONTACT RIVETS
Due to high price of silver,this type of rivets are very popular they are replacing solid contact rivets. The shank and part of its head are made of cheaper base metal (generally OFHC Copper) and the upper part of the head is only made of precious contact materials.
The base metal and contact materials are welded in an absolutely reliable way. The technique, of using more Copper and less precious materials, makes larger heads and shanks economically possible and this facilitates proper heat absorption and dissipation and alloys for higher ampere ratings.
The range of head diameter which can be produced by our equipment is 2.0mm-10mm.