Precision Welding of Leadwires and Resistor Elements, Wireforms and Glass Tube Cutting for Lighting and Electronics

ROHS Compliant Precision Welding of Leadwires
and Resistor Elements, Wireforms and Glass Tube Cutting for Lighting and Electronics

Products & Services

 

Contact CIT

Component InterTechnologies
2426 Perry Highway
Hadley, PA USA 16130

Tel: 724-253-3161
Fax: 724-253-3853
Email:

 

CIT Innovations


Whitepapers


Company Profile

Terminology & Definitions: Welded Leads for Lighting

Terminology of Lamp Leads Length Measurement Criteria

;amp lead meaaurement criteriaThe Inner Section
Some of the standard materials used are:  Copper, Nickel, Nickel-Plated Steel & Nickel-Plated Copper.  Temper is soft, half-hard or hard depending on the application.

The length is measured from the end of the press section to the end of the inner section.  It includes the weld knot at the end of the press section.

 

The Press Section
By far the most common material is Dumet wire:  Tungsten, Molybdenum and Nickel-Iron alloy wire are also used.

The length excludes the weld knots.

 

The Outer Section
Metals for this portion may be Monel, Nickel D, Copper, Copper-Plated Steel.

The length is measured from the end of the press section to the end of the outer section.

 

Four-Part Leads
Sections adjacent to the press section include the weld knots of the press section.

See Also: Welded Leads for Lighting

Definitions

Copper Clad Steel
Steel core with low carbon content, 30% conductivity, (40% and 70% conductivity available on special request).
Copper, OFHC
Oxygen free
Nickel-Plated Copper
Copper, OFHC
Copper, Tin-Plated
OFHC tin layer
Dumet, Borated
Nickel-Iron core with 41-43% Ni, 0.75-1.25% manganese, balance Fe. 
Copper layer: 22-28% Cu by weight, borated color medium according to
ASTM 3.5 R3, 94/8.0-8.5 R4.06/8.0.
Dumet Oxidized
As above, but oxidized; no borate.
Dumet, Unborated
As above, but no oxidation and no borate.
Iron
Low carbon content.
Molybdenum
HCT - high crystallization temperature
Monel
Nickel-copper alloy ≥ 63% Ni, Fe is 1.0-2.5%, MN ≤ 2.0% Balance Cu.
Manganese Nickel
≥ 97% nickel, 1.5-2.5% manganese, carbon ≤ 0.015%
Nickel D
Nickel-manganese alloy with 95% nickel and 5% manganese
Nickel-Plated Steel
Steel core with 4% nickel plating by weight.
Tungsten
99.9% tungsten also doped with potassium or lanthanum
Nickel Iron Alloy
Example: NiFe 48 = Alloy with 48% nickel by weight with balance being iron.