DEMM Engineering & Manufacturing - - CONTENTS -

The benefits of metal-free anti-seize

It is com­mon to say when a sit­u­a­tion is pro­ceed­ing as planned that ev­ery­thing is “run­ning like a well-oiled ma­chine,” in­di­cat­ing that, even on a ba­sic level, most peo­ple un­der­stand the im­por­tance to op­er­a­tion of lu­bri­ca­tion for mov­ing parts in in­dus­try. On a more spe­cialised level, main­te­nance staff in rel­e­vant in­dus­tries such as min­ing, man­u­fac­tur­ing, power, oil and gas could de­scribe the benefits of good qual­ity an­ti­seize lu­bri­ca­tion. Th­ese could in­clude pro­tec­tion of metal parts from rust, cor­ro­sion, galling, and seiz­ing; eas­ing as­sem­bly and dis­as­sem­bly; the re­duc­tion of fric­tion and wear on crit­i­cal op­er­at­ing equip­ment; as well as a protective role.

What might be less well-un­der­stood is that not all anti-seize prod­ucts are as ben­e­fi­cial as each other for the ma­chin­ery they are used on, for the work­ers ap­ply­ing them, or for the en­vi­ron­ment. The choice of lu­bri­cant can have a great im­pact on any op­er­a­tion, es­pe­cially over time and with pos­si­ble changes to gov­ern­ment reg­u­la­tions.

Heavy metal pol­lu­tion

Com­mon in­gre­di­ents in many of the anti-seize lu­bri­cants used widely in in­dus­try are cop­per, nickel, alu­minium and zinc, as well as other heavy met­als. The gov­ern­ments of Aus­tralia1 and New Zealand2 are in­creas­ingly re­quir­ing in­dus­tries to act sus­tain­ably. Th­ese will see metal­lic con­tam­i­nants be­ing phased out, re­quir­ing in­dus­tries to con­vert to the use of metal-free anti-seize prod­ucts.

The dis­per­sal of heavy met­als, in­clud­ing lead, into the en­vi­ron­ment where con­tam­i­na­tion of soil and wa­ter sup­plies can oc­cur is a grow­ing con­cern for all types of in­dus­try. The use of an­ti­seize prod­ucts con­tain­ing th­ese harm­ful sub­stances can sub­vert a com­pany’s own anti-pol­lu­tion ini­tia­tives, as well as po­ten­tially caus­ing harm to work­ers, the public and the en­vi­ron­ment.

The choice to use anti-seize prod­ucts con­tain­ing nickel and cop­per can be a counter-pro­duc­tive one as it could cause cor­ro­sion when used on stain­less steel, brass and bronze items, such as pipes. 3

Im­pu­ri­ties and cor­ro­sion

Many work­ers in­cor­rectly be­lieve that the same metal-based anti-seize they are familiar with can be used in ev­ery cir­cum­stance. Main­te­nance staff are not al­ways prop­erly trained to un­der­stand which anti-seize is ap­pro­pri­ate for par­tic­u­lar ap­pli­ca­tions, nor why the right choice is im­por­tant. 4 But there is a high cost to the busi­ness for mak­ing an in­cor­rect choice.

When in­cor­rect metal-based anti-seize lu­bri­cants are used on ma­chin­ery, caus­ing cor­ro­sion, the parts must be re­placed. This can cause un­sched­uled shut­downs, mean­ing that prof­its are lost while the ma­chines are in­ac­tive, and fur­ther costs the in­dus­try by re­quir­ing parts to be re­placed with in­creased fre­quency, thereby de­creased Mean Time Be­tween Fail­ures.

Cor­roded and rusty ma­chine parts are also an in­creased WHS risk5, as greater force needs to be ap­plied to loosen joints; and seiz­ing, vi­bra­tion and other in­ef­fi­cient op­er­at­ing dif­fi­cul­ties can be en­coun­tered.

Switch to metal-free anti-seize

Th­ese prob­lems, in­clud­ing the need to com­ply with chang­ing leg­is­la­tion, can be avoided by sim­ply switch­ing to the use of a metal free anti-seize lu­bri­cant prod­uct.

A high qual­ity metal free anti-seize, such as those man­u­fac­tured by Loc­tite, can also con­fer other benefits with its use. In ad­di­tion to be­ing com­pet­i­tively priced, Loc­tite’s range of metal free anti-seize prod­ucts re­duce wear and tear on ma­chin­ery by us­ing graphite which acts more ef­fec­tively to evenly lu­bri­cate than metal-based prod­ucts, thus low­er­ing main­te­nance costs.

Loc­tite Heavy Duty Anti-Seize is widely used in min­ing, quar­ry­ing, and man­u­fac­tur­ing plants, par­tic­u­larly in oil and gas where cop­per-based anti-seize use is pro­hib­ited. It has a rep­u­ta­tion for qual­ity and af­ford­abil­ity and is avail­able in both liq­uid and stick forms. A food grade metal free anti-seize is also avail­able in Australia and New Zealand and ben­e­fi­cial to the food and bev­er­age in­dus­try. Risks are re­duced for work­ers, who are con­se­quently not ex­posed to heavy met­als, and nor is the en­vi­ron­ment ex­posed to heavy metal pol­lu­tion.

Loc­tite’s Heavy Duty Anti-Seize func­tions on all met­als in­clud­ing gal­vanised iron, stain­less steel, brass, alu­minium and soft met­als be­tween -29 °C and +1315°C. 6 Loc­tite’s Heavy Duty Anti-Seize has been for­mu­lated to re­sist higher tem­per­a­tures than most other anti-seize prod­ucts on the mar­ket. Loc­tite’s Heavy Duty Anti-Seize is also non-re­ac­tive with the cat­a­lyst used in petroleum re­finer­ies: traces of cop­per from metal based anti-seize prod­ucts can the­o­ret­i­cally con­tam­i­nate and de­ac­ti­vate the cat­a­lyst used in th­ese op­er­a­tions. 7 When other anti-seize prod­ucts fail

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