Com­pact quat­troClean sys­tem from acp for dry, residue-free clean­ing

Auto components India - - CONTENTS - ACI Bu­reau

Trends such as elec­tro­mo­bil­ity, light­weight engi­neer­ing, minia­tur­i­sa­tion and In­dus­try 4.0 have given rise to new chal­lenges in the field of in­dus­trial parts clean­ing. With its quat­troClean sys­tem, the ad­vanced clean pro­duc­tion GmbH (acp GmbH) of­fers a so­lu­tion ca­pa­ble of per­form­ing a wide range of clean­ing tasks re­li­ably and cost­ef­fec­tively. The dry, residue-free and en­vi­ron­men­tally-neu­tral clean­ing tech­nol­ogy can be adapted to in­di­vid­ual re­quire­ments. It is highly com­pact, easy to au­to­mate and sim­ple to in­te­grate into pro­duc­tion lines, In­dus­try 4.0 man­u­fac­tur­ing sys­tems and clean­rooms.

The acp GmbH stands for the de­vel­op­ment of sys­tems with very high util­ity value for the chem­i­cal-free clean­ing of in­di­vid­ual com­po­nents and prod­ucts. As the clear mar­ket leader in Europe, a tech­no­log­i­cal leader and highly in­no­va­tive, acp makes avail­able en­vi­ron­ment- friendly CO2 dry clean­ing sys­tems to in­dus­tries.

Whether it is the au­to­mo­tive or sup­plier in­dus­try, pre­ci­sion or mi­cro engi­neer­ing, med­i­cal tech­nol­ogy, mecha­tron­ics, elec­tron­ics or other in­dus­trial sec­tor, cur­rent trends are chang­ing re­quire­ments con­cern­ing parts clean­ing. This also in­clude in­creas­ing num­ber of smaller and more com­plex parts and com­po­nents, shorter prod­uct life cy­cles, lower prod­uct vol­umes right down to the man­u­fac­ture of sin­gle parts, the use of new ma­te­ri­als and ma­te­rial com­bi­na­tions, for ex­am­ple for light­weight engi­neer­ing ap­pli­ca­tions, and new or mod­i­fied pro­duc­tion pro­cesses.

Elec­tro­mo­bil­ity, au­tonomous driv­ing and man­u­fac­tur­ing en­vi­ron­ments de­signed for In­dus­try 4.0 are fur­ther de­vel­op­ments which are in­flu­enc­ing parts clean­ing. There are cases where ma­te­rial com­bi­na­tions or sur­face struc­tures are un­suit­able for wet-chem­i­cal clean­ing, or only cer­tain ar­eas of com­po­nents need a spe­cific de­gree of clean­li­ness, such as bond­ing, weld­ing or seal­ing sur­faces, or clean­ing steps are per­formed on as­sem­bled com­po­nents.

Clean­ing with CO2 snow

This is where the re­li­able and cost-ef­fec­tive snow jet tech­nol­ogy from acp GmbH comes into its own. The scal­able clean­ing sys­tem can be eas­ily adapted to di­verse com­po­nent ge­ome­tries to clean se­lec­tive ar­eas or whole com­po­nents.

This en­vi­ron­men­tally-neu­tral tech­nol­ogy uses liq­uid car­bon diox­ide as a clean­ing medium which, as op­posed to dry ice, is gained as a by-prod­uct from chem­i­cal pro­cesses and the gen­er­a­tion of en­ergy from biomass. It has an al­most in­def­i­nite shelf-life and is sup­plied in cylin­ders or tanks.

Dry, residue-free clean­ing

Liq­uid CO2 is guided through the non-wear­ing two-com­po­nent ring noz­zle of the acp sys­tem and ex­pands on ex­it­ing to form fine CO2 crys­tals. These are then bun­dled by a cir­cu­lar jack­eted jet of com­pressed air and ac­cel­er­ated to su­per­sonic speed. The patented tech­nol­ogy en­sures uni­form clean­ing re­sults - even on large sur­faces where sev­eral noz­zles are used.

The jet of snow and com­pressed air has a tem­per­a­ture of mi­nus 78.5°C and can be fo­cused ex­actly where it is needed. When it im­pacts on the sur­face to be cleaned, a com­bi­na­tion of ther­mal, me­chan­i­cal, sub­li­ma­tion and sol­vent ef­fects take place. These four clean­ing mech­a­nisms en­able the quat­troClean sys­tem to re­move filmic con­tam­i­na­tion, such as residues of cool­ing lu­bri­cants, process oils, pol­ish­ing pastes, sep­a­rat­ing agents and sil­i­cons, as well as par­tic­u­late con­tam­i­na­tion, for ex­am­ple chips, dust and abra­sion. Since the clean­ing step with the non­com­bustible, non-cor­ro­sive and non-toxic CO2 snow is also gen­tle on ma­te­ri­als, even del­i­cate and finely-struc­tured sur­faces can be treated.

The aero­dy­namic force of the jet trans­ports the de­tached dirt away. This is then ex­tracted from the clean­ing cell to­gether with the sub­li­mated CO2 in a gaseous state. The work­pieces are dry on com­ple­tion of the clean­ing process, en­abling them to be fur­ther pro­cessed or pack­aged straight­away.

Suit­able for many prod­ucts

The quat­troClean snow jet tech­nol­ogy has proved to be ef­fec­tive in nu­mer­ous ap­pli­ca­tions in var­i­ous branches of in­dus­try. For ex­am­ple, the clean­ing sys­tem has been in use for sev­eral years now to re­move ab­la­tion residues from in­jec­tion-moulded in­ter­con­nect de­vices (MIDs) pro­duced by means of laser di­rect struc­tur­ing. Com­pared with com­mon clean­ing meth­ods, such as ul­tra­sonic or high­pres­sure wash­ing pro­cesses, the quat­troClean sys­tem has the ad­van­tage that the rough laser struc­tures are smoothed at the same time, thus sim­pli­fy­ing join­ing and assem­bly tasks. Laser residues also need to be re­moved when man­u­fac­tur­ing bat­ter­ies. Residues from laser pro­cess­ing cells, which could cause short­ing, are re­moved se­lec­tively and re­li­ably.

A man­u­fac­turer of sen­sor sys­tems uses the snow jet tech­nol­ogy from acp to clean off par­ti­cles be­fore sen­sors li­able to dam­age are pack­aged. For this ap­pli­ca­tion, a her­met­i­cally-sealed clean­ing cell was de­vel­oped, which is in­te­grated into a clean zone and fit­ted with a fil­ter fan unit to sup­ply clean air. The quat­troClean sys­tem is also used in an in­line ap­pli­ca­tion to clean en­gine pis­tons be­fore their sur­faces are op­ti­cally mea­sured.

The parts are cleaned by a ro­bot. The sys­tem works in the pro­duc­tion sys­tem’s one-piece flow and is ca­pa­ble of clean­ing 11 cm2/sec. When it comes to die-cut­ting, an al­most man­ual sys­tem re­moves pro­duc­tion residues from strips im­me­di­ately af­ter cut­ting. This sin­gle-part clean­ing step re­places the com­monly-used wet-chem­i­cal clean­ing process.

Com­pact, easy to con­trol

Thanks to its mo­du­lar de­sign, the com­pact quat­troClean sys­tem from acp is easy to adapt to spe­cific cus­tomer re­quire­ments. This al­lows man­ual, par­tially-au­to­mated and even fully-au­to­mated clean­ing sys­tems to be de­vel­oped and in­te­grated into ex­ist­ing pro­duc­tion, assem­bly and pack­ag­ing lines. Clean­ing tests are con­ducted at the acp tech­ni­cal cen­tre to ac­cu­rately de­ter­mine all the process pa­ram­e­ters for the ap­pli­ca­tion con­cerned, such as vol­ume flows for com­pressed air and car­bon diox­ide, as well as the du­ra­tion of the jet. Ma­te­rial prop­er­ties and the type of con­tam­i­na­tion re­quir­ing re­moval are also ac­counted for. These pa­ram­e­ters can be filed as clean­ing pro­grammes in the sys­tem con­trol. Depend­ing on the task at hand, sys­tems for clean­room use can be re­al­ized with their own lo­cal clean­room sys­tem, in­clud­ing a spe­cially-adapted ex­trac­tion sys­tem.

Par­tial clean­ing

The CO2 snow jet tech­nol­ogy se­lec­tively dry-cleans spe­cific ar­eas of com­po­nents with­out leav­ing any residue, for ex­am­ple be­fore or af­ter laser-weld­ing pro­cesses.

Clean­ing MIDs

A jet of CO2 snow re­moves par­ti­cles in a dry and gen­tle process af­ter laser di­rect struc­tur­ing MIDs.

Re­mov­ing ab­la­tion residues

Com­pared with com­mon clean­ing meth­ods, such as ul­tra­sonic or high-pres­sure wash­ing pro­cesses, the quat­troClean sys­tem has the ad­van­tage of smooth­ing rough laser struc­tures at the same time.

The acp process prin­ci­ple

Liq­uid CO2 is fed through a non­wear­ing two-com­po­nent noz­zle and ex­pands on ex­it­ing to form fine CO2 crys­tals, which are bun­dled by a cir­cu­lar jack­eted jet of com­pressed air. This patented tech­nol­ogy en­sures uni­form clean­ing re­sults.

Newspapers in English

Newspapers from India

© PressReader. All rights reserved.