Upgrade to SilverLine® technology! Patented SilverLine technology improves electrode and nozzle life— so you can cut more metal with one set of consumables. To start saving with SilverLine just follow the instructions on our Quick Setup card: the more you cut the more you save!
Centricut product for ESAB
PT-24 Precision Plasmarc Quick Set-up 1.
To achieve maximum SilverLine electrode life
To achieve maximum nozzle life
A fully used SilverLine electrode will have a pit depth of .060 in. (1.5 mm). Note: This is deeper than the recommended pit depth for standard parts .040" (1 mm).
With careful use, the nozzle can last 1:1 with the SilverLine electrode.
Purge torch: after each parts change purge the torch for at least 30 seconds to remove residual moisture. 2.
Leak check the torch after purging to make sure all o-ring and metal-to-metal seals are working as designed. Adjust gas flows: Plasma gas flow rate is critical. High flow will cause rapid electrode wear and hard starting. Low flow will cause uncontrolled arcing. (See parameters)
3.
4.
Adjust arc voltage: As the electrode wears, the torch will get closer to the plate. To compensate for this, increase arc voltage in 2-volt increments, up to 10 volts higher than the initial setting.
5.
Avoid ramp-down errors: Ramp down errors can occur when rip cutting off the plate or when leading out to the dropped part as the arc stretches. These “blowouts” shorten electrode life by 10 or more starts per occurrence.
6.
7.
8.
9.
1. 2. 3. 4. 5. 5. 6. 7. 8. 9.
®
Part number L70-758 L70-725 C70-1039 C70-692 C70-543 C70-923 C70-007 C70-010 C70-712 C70-531
Reference number 21758 21725 21539 21692 21543 21923 22007 22010 21712 22531
Properly tighten the nozzle retainer: Make sure the nozzle retainer is sealed tightly against the nozzle to maintain a metal-to-metal seal and prevent leaking. Pierce at correct height: Piercing too low causes molten metal (spatter) to hit the shield and nozzle. This is the most common cause of premature nozzle failure. Piercing too high can cause slow arc transfer and misfires. In most applications, 1/4" (6 mm) pierce height works. Adjust shield flows: Correct shield gas flows during pre-flow protect the nozzle and shield from damage. Make sure pre-flow is adjusted according to the cut chart. Clean the nozzle and shield: Periodically clean the nozzle and shield to remove spatter. This will prevent double arcing. Adjust arc voltage: As parts wear, adjust arc voltage up in 2-volt increments to keep the shield from dragging on the plate. Damage to the shield and nozzle occurs if the torch contacts the plate during cutting.
Description PT-24 Torch Water baffle Electrode, SilverLine Swirl baffle 4-hole Nozzle “D” 70 A Nozzle “E” 100 A Nozzle retainer diffuser Shield cup insulator Shield retainer insulator with o-ring Cup shield with retainer
Recommended parameters for mild steel cutting with oxygen Metal Thickness In.
mm
Plasma start Flow %
Plasma cut Flow %
Shield pre-flow Flow %
Shield cut-flow Flow %
Arc current A
Arc voltage V
.187
Cut speed in./min mm/min
5
90
25
60
30
70
112
130
3302
.250 .312
6 8
90 90
25 25
60 60
30 30
70 70
113 115
100 85
2540 2159
.375
10
90
25
60
30
70
117
72
1829
.500
12
90
25
60
30
70
135
35
889
.625
16
90
25
60
30
70
137
25
635
.312
8
100
30
60
30
100
114
90
2286
.375
10
100
30
60
30
100
115
80
2032
.500
12
100
30
60
30
100
117
50
1270
.625
16
100
28
60
30
100
118
30
762
.750
20
100
28
60
30
100
122
25
635
Half-used electrode This SilverLine electrode is only half consumed. The pit in the center of the part measures .040" (1.0 mm). Electrodes are often removed prematurely due to cut quality deterioration related to nozzle failure. Additional life can be achieved by replacing the nozzle and leaving the electrode in place.
SilverLine technology involves fusing a silver front-end onto a copper electrode base. Inserting the hafnium emitter into an all-silver front end versus copper creates two advantages. 1) The hafnium-silver bond is stronger, allowing a deeper pit depth in the hafnium as the electrode is used. 2) By diffusing more heat during use, silver slows the rate of hafnium wear. Both of these benefits combine to prolong electrode life and lower the cost of cutting.
Fully-used electrode The SilverLine electrode has provided full use. The pit depth is .060" (1.5 mm). The operator increased the arc voltage by 10 volts from the first cuts made with this electrode to the last. This maintains a constant distance between the torch and the work-piece through the life of the electrode.
.040" (1.0 mm)
.060" (1.5 mm)
(See graph below)
Centricut, Hypertherm and SilverLine are trademarks of Hypertherm, Inc., and may be registered in the United States and/or other countries. All other trademarks are the property of their respective owners. Hypertherm is in no way affiliated with ESAB. Š Copyright 7/07 Hypertherm, Inc.
Centricut product for PT-24 100-amp oxygen electrode life Benchmark testing results
Contact your Hypertherm distributor or call 1-800-752-7623 for the location nearest to you.
Hypertherm, Inc. Hanover, NH 03755 USA 603-643-3441 Tel
Hypertherm Europe B.V. 4704 SE Roosendaal, Nederland 31 165 596907 Tel
Hypertherm (S) Pte Ltd. Singapore 349567 65 6 841 2489 Tel
HYPERTHERM BRASIL LTDA.
Hypertherm (Shanghai) Trading Co., Ltd. PR China 200052 86-21 5258 3330 /1 Tel
www.hypertherm.com
Guarulhos, SP - Brasil 55 11 6409 2636 Tel
Relative percent increase in consumable life Compared to original OEM baseline
880390
1.50 1.25 1.00 .75 .50 .25 0 Original OEM ESAB 21539
Old Centricut electrode C70-1039
New improved Centricut electrode C70-1039
PT-24® OEM ESAB®
System Precision Plasmarc®
Consumables Centricut part number 1 C70-531* 2 C70-712 C70-931 3 C70-010 L70-008 4 C70-007 L70-540 L70-541 5 C70-542 C70-543 C70-923 L70-852 L70-536 6 C70-692 7 C70-1039*
9
8 7*
6 5
Reference number
Description
22531 21712 N/A 22010 22008 22007 21540 21541 21542 21543 21923 21852 21536 21692 21539
Shield, One Piece w/ IHS tab Shield Retainer Insulator w/ O-Ring Shield w/out Tab Shield Cup Insulator Shield Cup, 15 –30 Amp Nozzle Retainer Diffuser Nozzle A, 15 Amp Nozzle B, 30 Amp Nozzle C, 50 Amp Nozzle D, 70 Amp Nozzle E, 100 Amp Swirl Baffle, 15 Amp Swirl Baffle, 30 Amp Swirl Baffle, 50 –100 Amp SilverLine Electrode
Pkg qty 1 1 1 1 1 1 1 1 5 5 5 1 1 1 1
Maintenance items Centricut part number 4
L70-714 L70-797 L70-W18 L70-W62 8 L70-725 9 L70-758 027055
3
2
Reference number
Description
950714 638797 98W18 86W62 21725 21758 N/A
O-Ring O-Ring O-Ring O-Ring Water Baffle Torch Body Lubricant .25 oz. (7ml) Tube
Pkg qty 1 5 5 1 1 1 1
* Centricut part features a unique Hypertherm design that differs from the OEM design.
1*
Centricut and SilverLine are registered trademarks of Hypertherm, Inc. and may be registered in the United States and/or other countries. All other trademarks are the properties of their respective owners. Centricut is in no way affiliated with ESAB.
9
Plasma
www.centricut.com