Lincoln Electric IM10024 manual Connect the lug on the electrode cables from

K231-[X/XX] CONTACT NOZZLE

The K231- [x/xx] is used for submerged arc weld- ing with currents generally under 600 amps. Higher currents can be used but result in some- what faster tip wear. The outer flux cone deposits flux around the arc for full coverage with mini- mum flux consumption.

Contact tips for the electrode diameter specified on the order are shipped with each nozzle. A dif- ferent contact tip is required for each electrode diameter used.

- Nozzles ordered for 3/32” (2.4 mm) electrodeInstallationinclude a liner and a contact tip adapter. Screw the adapter into the end of the nozzle and the contact tip into the adapter.

Insert the outgoing wire guide from the wire feed head into the top of the K231 and install the assembly in position on the bottom of the wire feed head. Lock it in position using the two clamps provided with the head.

Connect one end of the rubber flux hose to the tube at the bottom of the flux hopper. Fit the short copper tube in the other end of the rubber hose then insert the copper tube into the hole in the flux cone body. See Figure C.1

- Pushing the copper tube too far into CAUTION the flux cone body will cause a short between the cone and nozzle if the

cone touches the work.

FIGURE C.1 - K231

C-2

SUBMERGED ARC CONTACT ASSEMBLIES

ACCESSORIES	C-2
Connect the lug on the electrode cables from the
power source to the tab on the contact nozzle
and tighten the bolt and nut. See Figure C.1.
Operation - DO NOT completely straighten the

electrode. A slight curvature is required in the electrode to insure good electrical contact inside the contact tip.- Replace the contact tip when it noMaintenancelonger provides accurate wire location or good electrical contact. Rusty and dirty wire or exces- sively high currents increase tip wear. Always keep replacement tips in stock.

To replace the contact tip, first loosen the retain- ing wing nut and remove the flux cone body. Then unscrew the tip and replace it.

A special socket head screw holds the nozzle body to the insulator. If the nozzle body becomes loose, remove the nozzle from the head, tighten the screw and reassemble nozzle.

- The K231 nozzle can be extended ifExtnecessarynsions. Order part number S12003 for a 5” (127mm) extension or make any length per draw- ing in Figure C.2.

FIGURE C.2 - EXTENSION

	Socket Head
	Screw
	Weld Cable
	Connection
Flux	Wing
Hose	Screw
Copper	Flux Cone
Tube
	Body
	Flux Cone

1/32”x45°			60° + 2°						Remove Sharp
Chamfer										Corner
9/16-18
									1/2”
Class 2 Fit
					1/8”
							1/2”
		As								Material - Hard Drawn
										Copper or Heat Treatable
	Req’d									Copper Alloy
							33/64”Drill 11/16” deep
						9/16-18 Tap 9/16” deep
										Class 2 Fit
								1/32”x45°
Break				3/4”				Chamfer
Corner									“A” Dia. (See Table)
										Wire Size	“A” Dim.
									5/64-3/32(2.0-2.4mm)		1/8 (3.2mm)
									1.8-5/32 (3.2-4.0mm)		3/16 (4.8mm)
									3/16 -7/32(4.8-5.6mm)		1/4 (6.4mm)

MAXsa™ 22 & 29 WIRE DRIVES