Despatch Heater Welding User Manual

P.N. 200560

Electric Heater Lead
Welding Instructions

Gas Weld

1. Place coil end parallel to
the rod and tie the coil
lead to the rod with
nichrome wire to hold the
lead in place while
welding. (See Figure 1).

2. To weld the coil to the rod,
use an oxyacetylene
flame. For filler rod, use
excess heater coil wire.
Use a soft flame to melt
filler rod and fill in around
coil leads to form a “ball”.
Do not try to weld the coil
leads directly to the rod.
No flux is required. (See
Figure 2).

CAUTION: Too hot a flame or applying too much heat to the coil leads can
burn them off or cause crystallizing. Keep flame moving.

3. When the coil leads have
been built up by the
appolication of filler rod,
increase flame heat.
Apply the flame to the rod
and add filler between the
rod and built-up leads,
gradually fusing them
together. (See Figure 3).

V-28

Rev. 3-02

1

TIG Weld

Joint

Type of Welded Joint: J-Groove
Backing Material: No

Base Metal

Sheet steel to SS Rod (support
steel)

Filler Metal

Specification: If required, chromel
lead wire
Classification: Same as heater lead

Technique

Amperes Volts

1 with 3/8” nozzle

.062 diameter

1. Start puddle.

2. Before melting wire use a slight weave.

3. Once you start melting wire, lead the puddle with torch.

60-78

60 nom.

Gas

Shielding Gas: Argon
Percent Mixture: 100% Argon
Flow Rate: 10-14 CFH

Coating

Type: None

Preheat

Preheat Temperature Min: None

Welding Current Pass No. Tungsten Size

Travel Speed

17-19 N/A

2