Campbell Hausfeld WT5000 Welding Guidelines, Gas Welding, Gas Brazing, Flame Cutting

5. Continue to depress the oxygen lever past the final edge of the metal for a good cut.

6. Shut down torch following shut down instructions.

7. Compare cut edge with Figure 17 to correct subsequent cuts.

A. Correct

B. Travel speed too fast

C. Travel speed too slow

D. Preheat too hot

Figure 17 - Correct Cutting Speed

Maintenance

CHECK VALVES

Always use

! WARNING reverse flow check valves with this equipment. They reduce the possibility of mixing gases in the hoses and regulators. These gases can explode in the hoses, regulators or cylinders, resulting in serious injury to the operator. Test reverse flow check valves routinely to assure correct operation.

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Model WT5000

Welding Guidelines

Gas Welding

Gas welding is a method of joining similar metals by melting with oxy-fuel flame and allowing the two parts to fuse together. The use of a filler rod is recommended in most cases. The filler rod should match the material being welded with a diameter equal to the thickness of the workpiece.

Clean all metal surfaces prior to welding. Any oil, grease, rust, scale, paint or other impurities must be removed before welding.

Before attempting to weld final product, practice on scrap material.

Begin by holding the torch tip approximately 1/8” above the metal at a 45˚ angle to the surface. Rotate the flame in a circular motion on the surface you are welding. The metal will puddle and flow together. If the puddle does not form or is shallow, the tip size is too small. If the metal splatters from the puddle, the tip size is too large.

	Never use oxygen
! WARNING
	to blow off work or

clothing as spark can ignite oxygen saturated clothing.

	45˚
Filler
Rod
Advance per oval
about 1/16”	About 1/4”
About 1/4”	Start

Figure 16 - Proper Welding Angle

Gas Brazing

Brazing heats the base metals to temperatures above 700˚F, but below their melting points. A single or multi- flame tip may be used. A filler rod bonds the metals together. Flux is required to prepare metal for joining. Most metals can be joined by brazing, however, the proper filler rod and flux must be used.

Surfaces must be absolutely clean to ensure sound brazed joints.

Perform all

! CAUTION brazing processes in a well-ventilated area. Toxic fumes may be generated by the brazing process. Refer to the Material Safety Data Sheet (MSDS) for the brazing rod.

1.If the rod is not flux coated, heat the tip of the rod and dip into flux. The flux will adhere to the heated rod.

2.Preheat the metal surface to a dull red color. Only the outer flame, not the inner cone, should be applied to the surface. A porous deposit will result if surface is too hot.

3.Touch the fluxed rod to the heated metal. Allow some flux to melt and react with the base metal.

4.Melt off small amounts of fluxed rod as you braze. If the rod flows freely and “tins” (adheres to the heated base metal), the correct temperature has been reached. Maintain this temperature by continually moving the flame over the metal.

5.Continue to dip the rod into the flux. Add sufficient rod to the base metal to build up the bead.

Flame Cutting

Flame cutting is a simple process that can be quickly mastered. Only steel can be cut using the flame method. Aluminum, brass, stainless steel and other porous metals do not burn in a manner that allows flame cutting.

1.Light the torch as described in Operation instructions.

2.Direct the preheat flame to the spot where cutting is to start. Hold the inner cone of the heating flame approximately 1/16” above the surface. Preheat the metal to a bright cherry red.

3.Depress the cutting oxygen lever slowly and completely to begin the cutting action.

4.When the cut begins, move the torch in the direction of cut.

NOTICE	Moving the torch
	too slowly allows

the cut to fuse together. Moving too quickly will not preheat the metal and the cut will be lost.

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