MINERAL ACID PICKLING FOR IRON AND STEEL

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Acid Cleaners: Compounded Products containing Detergents and Inhibitors

SurTec 420
Product Info
Liquid, stable in acids, highly concentrated inhibitor for acid pickling, suitable in combination with hydrochloric acid or mixed acids, minimises the attack on the bulk metal, so the cleaning effect is focussed on rust, scale and likewise pollutions. Decreases the iron input in the pickling and in subsequent process steps, prolongs the life time of the pickling, lowers the hydrogen formation and thus the acid fumes and reduces effectively the embrittlement of the parts because of the inhibited hydrogen generation. Specially suited for pickling in continuous process lines.
SurTec 423
Product Info
Low foaming, inhibited acid cleaner for highly critical parts with respect to hydrogen embrittlement. Suitable for hydrochloric acid and mixed acid picklings. For continuous lines, the non foaming product SurTec 423 R can be used.
SurTec 423 R
Product Info
Liquid, highly concentrated, foam free inhibitor for hydrochloric acid picklings, reduces the accumulation of iron into the pickling and into the following processes.
SurTec 424
Product Info
Liquid, inhibited pickling additive for highly critical steel parts. Protects effectively against hydrogen embrittlement.
SurTec 425
Product Info
Detergent pickling inhibitor, above all for hydrochloric acid at ambient temperature. Easy-to-rinse inhibitors ensuring succesfull subsequent plating.
SurTec 427
Product Info
Liquid inhibited pickling additive for highly critical steel parts, acid-resistant, highly concentrated, easily rinsed off, suited for combination with hydrochloric acid and mixed acids. Removes rust, scale and pigments, special detergents and inhibitors mixed for minimum hydrogen embrittlement (see also SurTec Technical Letter 8).

Modular System: Detergents, Inhibitors and Boosters for Special Pickling

SurTec 418
Product Info
Powdery inhibitant additive for acid and alkaline cleaning systems, suitable for nonferrous metals, zinc and iron, easy to dissolve, suitable for eletrolytical cleaning.
SurTec 426
Product Info
Liquid, emulsifying detergent booster for mineral acid pickling and electrolytical cleaning; compatible with SurTec 421.
SurTec 421
Product Info
Concentrated, water soluble inhibitor for hydrochloric acids; detergent-free and non foaming, applicable alone or in combination with SurTec 426.
SurTec 422
Product Info
Concentrated, acid soluble inhibitor for sulfuric and phosphoric acid picklings. Inhibits blackening of the uncoated side in strip plating.
SurTec 428
Product Info
Granular accelerator for pigment removal and for stripping of zinc alloys. Can be combined with acidic or alkaline systems for descaling and decarburising.

Compounded Products for Decalcifying, chemical Deburring and Derusting

SurTec 431
Product Info
Acidic electrolytical pickle, specially developed for the de-scaling of stainless steels before electropolishing. The fluoride free composition of the acids has been matched to the electropolishing system SurTec 459. As a result, the electropolishing process can take place immediately without intermediate rinsing. There is no danger of embrittlement due to the optimum anodic operation conditions of the pickle.
SurTec 432
Product Info
Multi-purpose acidic pickling product with reliable and lasting cleaning properties, based on nitric acid and hydrogen fluoride. Able to pickle all stainless steal alloys with a proper result.
SurTec 433
Product Info
Acidic, nitric acid free stainless steel pickle, which removes alle tarnish and scale layers from stainless steel surfaces in a single step. It can be used up to an iron content of 120 g/l and is characterised by very long service lives.
SurTec 436
Product Info
Acidic, liquid, nitric-acid-free, stainless steel pickling, utilisation as immersion pickle, no harmful formation of nitrogen oxide gases (NOx). Treatment of different stainless steel types like martensitic, ferritic and austenitic steels is possible, dissolves welding oxides which are removed completely in the subsequent electropolishing treatment. Because of the low fluoride concentration only very small attack on titan which is often used as contact material in automated installations.
SurTec 451
Product Info
Chemical deburring, easy, safe and economical application for immersion application. Applicable for automatic dosage because of high reproducibility and ready-for-use solution.
SurTec 468
Product Info
Acidic, liquid, concentrated inhibited steel pickling based on sulfuric acid and phosphoric acid. Can be used as chemical as well as electrolytic pickle, free of nitric acid and fluorides.
SurTec 469
Product Info
Liquid, inhibited, phosphoric based acid cleaner containing, non foaming derusting agent for immersion and spray applications.
SurTec 471
Product Info
Liquid, inhibited, phosphoric acid derusting agent for immersion and manual processes on steel. Contains surfactants. Uniform derusting. Perfectly suited also for aluminium and its alloys.
SurTec 472
Product Info
Liquid acid cleaner concentrate, free of surfactants, especially suitable to remove oxidic impurities from aluminium and non-ferrous metals.
SurTec 473
Product Info
Liquid acid cleaner, contains phosphoric acid, for stainless and aluminium surfaces; for outer surfaces of vehicles in use on tracks or streets.
SurTec 474
Product Info
Liquid, phosphoric and sulfuric acid cleaner, contains surfactants, inhibited on iron and steel. Applied for removing corrosion residues.
SurTec 478
Product Info
Double-component, acidic pickle degreaser, especially developed for activation and cleaning of surfaces before yellow- or transparent chromating and Cr(VI)-free passivation of aluminium. SurTec 478 controls the material removal, while SurTec 478 B regulates the degreasing impact. Spray- and immersion cleaning are possible.
SurTec 479
Product Info
Liquid pickling and derusting agent based on hydrochloric acid, removes scales, smut and rust, contains inhibitors to prevent attack on the base material iron.
SurTec 481
Product Info
Powdery salt for acid dip, effective activating of even difficult metal surfaces before eletroplating, cyanide- and chrome(VI)-free.
SurTec 493
Product Info
Nitric acid containing desmutting and deoxidiser for the treatment of highly-alloyed aluminium alloys. Intensified with nitric acid, SurTec 493 can be used instead of an alkaline pickle for the treatment of difficult alloys.
SurTec 495
Product Info
Powdery, highly concentrated desmutting for aluminium, removes even hard pickle remainders and oxides, Especially suitable for high alloy and copper containing aluminiium.
SurTec 498
Product Info
Desmutting additive, which is an alternative, if used with sulphuric acid (or condemned anodising bath) to the common nitric acid deoxidiser or nitric acid-fluoride-decalcifyer. By pretreating of Cu- and Si-containing alloys, the product characterises by its activating impact wihtout any attack on the base material.
SurTec 499
Product Info
Double-component, acidic pickling degreaser, especially for activation and cleaning of surfaces before green chromating of aluminium. SurTec 499 A controls the material removal, while SurTec 499 B regulates the degreasing impact. Spray- and immersion application are possible.

ALKALINE DERUSTING AND DESCALING

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SurTec 415
Product Info
Liquid emulsifying detergent booster, very good lowering of the surface tension, well dissolving of pigments, also suitable for ultrasonic applications, also in high alkaline medium good soluble. Can be used together with SurTec 194, SurTec 138 or even only with sodium hydroxide for cleaning, descaling, dephosphating and delaquering (depending on the type of laquer) of steel and iron, can be used as detergent booster together with a builder for all materials.
SurTec 418
Product Info
Powdery inhibitant additive for acid and alkaline cleaning system, suitable for nonferrous metals, zinc and iron, suitable for electrolytical cleaning, easy to dissolve.
SurTec 419
Product Info
Liquid additive for alkaline electrolytical cleaning and descaling baths, free of hard complexing agents as EDTA, NTA, soluble even in high alkalinity. As a weak complexing agent, it improves the cleaning result of alkaline immersion cleaners, excellent results in electrolytical and descaling cleaning together with SurTec 194, or even with only sodium hydroxide, suited for dephosphating.

ALUMINIUM PICKLING AND BRIGHTENING

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Acid and Alkaline Products for Spray and Immersion Processes

SurTec 181
Product Info
Liquid, highly alkaline aluminium etching for spray and immersion processes. By a special formulation, calcification of the line is prevented safely.
SurTec 400 A
Product Info
As a special enviromentally friendly, foam preventing additive for E6 etches, high bath loads (bath load/bath volume) are possible without the bath foaming over. For use in combination with SurTec 402.
SurTec 400 C
Product Info
Chelating agent for masking of aluminium(III)-ions in alkaline solutions. Suitable for service life extension of E0 etching baths or for replenishment of overloaded E6 etching baths. In E0 etches, aluminium concentrations up to 50 g/l can be stabilised with caustic soda, without the building of aluminate stone.
SurTec 400 S
Product Info
Foam blanket building additive for decreasing the building of aerosole. Especially recommendable in etch baths for make-up with excessively strong hydrogen evolution or for pickling processes without or with insufficient exhausting system.
SurTec 402
Product Info
The use of the E6-complete etching agent always ensures the right ratios between caustic soda and additive. Hereby, constant aluminium content and consistent etching conditions always ensure a uniform finish. SurTec 402 produces a brilliant-calendered surface finish. It is perfectly suited for the levelling and compensation of pressing marks (dye lines).
SurTec 402 A
Product Info
Longtime E6-etching agent, to use in combination with sodium hydroxide as an alternative for SurTec 402.
SurTec 404
Product Info
Longlife E6-etching agent, produces a brilliant satin surface finish on aluminium alloys. It is perfectly suited for the levelling and compensation of pressing marks (dye lines) and shows excellent draining-off properties. Even high throughput generates only low foam formation.
SurTec 462
Product Info
Chemical brightening process for aluminium and its alloys. Free of nitric acid and heavy metals. Depending on the aluminium alloy, it produces high degrees of brightness. The best results of brilliancy are achieved on mechanical pre-polished bright alloys.
SurTec 463
Product Info
Electrolytical polishing process for aluminium and ist alloys. Free of nitric acid and heavy metals. Contains surface active organic additives to prevent a chemical attack after the polishing process. Best degrees of brightness and reflection are achieved with pre-polishing.
SurTec 470
Product Info
Liquid, phosphoric acid based aluminium pickling for high pressure and immersion processes. Cleans and pickles without interfering superficial residues.
SurTec 476
Product Info
Reinforced phosphoric acid based aluminium pickling. Free of tensides, pickles without foam. If necessary, combinable with SurTec 086 or SurTec 089.
SurTec 482
Product Info
Powdery, highly alkaline etching degreaser for aluminium, free of silicates and surfactants, contains no nitrite or nitride.
SurTec 483
Product Info
Acidic, fluorid containing, matt pickling, mainly used in immersion processes where it produces a bright matt finish. If a levelling and compensation of pressing marks (dye lines) is required mechanical polishing or electropolishing is necessary.
SurTec 485
Product Info
Alkaline clearing bath for removal of phosphate layers on aluminium and its alloys which occur during the electrolytic polishing process. Does not attack the basic material after the removal of the polishing film, so a maximum degree of brightness is achieved.
SurTec 494
Product Info
Liquid, chromium-free clarification for aluminium and its alloys; detergent free and non-foaming, for immersion and spray installations.
SurTec 495
Product Info
Powdery, highly concentrated desmutting for aluminium, suitable for copper and silicon containing alloys.
SurTec 495 L
Product Info
Liquid, highly concentrated desmutting for aluminium, even removes heavy etching residues and oxides. Also suitable for high-alloyed and copper containing aluminium. The surface is active and perfectly prepared for subsequent passivation, e.g. with SurTec 650 chromitAL.
In comparison with SurTec 495, SurTec 495 L is significantly easier and more safe to dose:
- SurTec 495 L does not lead to dust exposure when added
- stirring into the solution is faster
- no separate addition of sulphuric acid required, SurTec 495 L already contains the needed value of sulphuric acid in the concentrate.
SurTec 496
Product Info
Liquid desmutting for aluminium, contains inhibitors that improve the desmutting of aluminium alloys, the additive decreases the formation of NOx-gases.
SurTec 497
Product Info
Acidic, liquid desmutting additive, applicable for aluminium and aluminium alloys, specially developed for activation and cleaning of surfaces previous to passivation, coating and anodic oxidation, free of chromates, suitable for immersion and spray application.
SurTec 981
Product Info
Liquid additive for ball burnishing, high effective mixture of surfactants and organic acids, suitable for aluminum and brass.

PLATING ON PLASTICS

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SurTec 835
Product Info
Electroless nickel process, proofed, highly stable alkaline nickel process without current flow, works even at lower temperatures and has a wide temperature window. Fast deposition of homogenous and well conducting nickel layers, especially developed for pretreated plastics and other non-conductives.
SurTec 960
Product Info
Wetting agent for ABS pickling, resistant to chromic acid, liquid to viscous additive. Produces a foam evenly distributed on top of the bath surface to prevent chromic acid aerosols, fast wetting effect on the parts which leads to an uniform pickling attack, reduces the surface tension, even at low concentrations and reduces the consumption of chromic acid.
SurTec 965
Product Info
Liquid reduction additive for the reduction of Cr(VI) after the chromic acid pickling (SurTec 960) followed by double rinse, can be used separately or together with hydrochloric acid or sulfuric acid.
SurTec 969
Product Info
Post-activator for the palladium activation, contains an acidic fluoride containing salt, accelerates the deposition of the following electroless nickel and protects this bath from drag-in of Sn/Pd catalysator.