
In addition to the abrasive media, the use of suitable Compounds also plays a crucial role in the vibratory finishing process. Depending on the material and the machining task, workpieces are cleaned, degreased and (temporarily) protected against corrosion during processing. A wide range of standard compounds is available for this purpose. For specific requirements, Walther Trowal also offers special compounds with specific properties, such as acid resistance, low foaming or pickling action.
Various polishing processes are also available to achieve the desired surface quality. In the Trowapast process, hard and rough surfaces such as steel, stainless steel or brass are gently polished to a high gloss over several hours. With ball polishing, workpieces made of aluminium, die-cast zinc, brass or stainless steel are given a shiny surface quickly and cost-effectively. Powder compounds can be used for higher grinding performance. They perform cleaning on contaminated abrasive media and roughen up media that have become too smooth. For workpieces heavily contaminated with oil or grease, so-called ‘shock degreasing’ is also recommended, achieved by adding degreasing powder. For pickling, descaling, and derusting, the powdered pickling agent Z1 is also available, which is characterised by its ease of use.
- Compounds protect against corrosion, perform cleaning and degreasing
- Powder compounds are suitable for polishing your workpieces
- Degreasing powder removes stubborn oil and grease residues
Specialised treatment agents for process water that are not recirculated.
- Suitable for machining steel, stainless steel, non-ferrous metals, ceramics and plastics
| Designation | pH range | Properties | Properties | Properties | Conditions | Comments |
|---|---|---|---|---|---|---|
| Corrosion protection | Cleaning / Degreasing | Brightening | Water hardness ° dH | |||
| trowal ARF-S | alkaline | ++ | + | ++ | all ranges | highly foaming |
| trowal S 70 | alkaline | ++ | + | 0 | 10–15 | |
| trowal KH65 | slightly alkaline | ++ | 0 | + | 10–15 | |
| trowal KTI | neutral | ++ | ++ | ++ | all areas | slightly foaming, for titanium |
| trowal M 10 | slightly alkaline | + | + | ++ | all areas | highly foaming |
For recirculation systems, we manufacture treatment agents that produce very little foam during cleaning of process water in the centrifuge.
- Suitable for machining steel, stainless steel, non-ferrous metals, ceramics and plastics
| Name | pH range | Properties | Properties | Properties | Conditions | Comments |
|---|---|---|---|---|---|---|
| Corrosion protection | Cleaning / Degreasing | Brightening | Water hardness ° dH | |||
| trowal KFL | slightly alkaline | + | + | ++ | 10 - 15 | Universal use |
| trowal DE 97 | alkaline | ++ | ++ | + | 10–15 | Degreaser |
| trowal KR 50 | alkaline | ++ | + | + | 10–15 | Very good corrosion protection |
| Name | pH range | Properties | Properties | Properties | Conditions | Comments |
| Corrosion protection | Cleaning / Degreasing | Brightening | Water hardness ° dH | |||
| trowal KRA | slightly alkaline | + | ++ | + | all ranges | Universally applicable |
| trowal SGK | alkaline | + | ++ | + | all ranges | Good corrosion protection on non-ferrous metals, degreaser, very high surface energy on aluminium and zinc die-castings |
| trowal KRS | alkaline | ++ | + | + | all applications | Very good corrosion protection |
| trowal OS 30 | alkaline | ++ | ++ | 0 | all areas | Good corrosion protection on steel, powerful degreaser – demulsifying |
| trowal AL 01 | neutral | ++ | + | ++ | all areas | Particularly suitable for non-ferrous metals |
The powdered treatment agents enhance grinding performance and aid Degreasing.
- Suitable for machining steel, stainless steel, non-ferrous metals, ceramics and plastics
| Designation | pH range | Properties | Properties | Properties | Circulation technology | Comments |
|---|---|---|---|---|---|---|
| Abrasive action | Cleaning / Degreasing | Corrosion protection | ||||
| trowal VS | neutral | ++ | - | - | ++ | very little foam |
| trowal 9A | neutral | ++ | - | - | ++ | very little foam |
| trowal HG | alkaline | + | + | - | + | very little foam |
| trowal K 10 | strongly alkaline | - | ++ | ++ | 0 | moderate foaming |
| trowal K 15 | strongly alkaline | - | ++ | ++ | - | high foaming |
| trowal K 25 | strongly alkaline | - | ++ | ++ | - | a lot of foam |
| trowal B 2 | alkaline | - | ++ | ++ | ++ | very little foam |
Specialised treatment agents for pickling and shot-blasting, which are mostly used in continuous-flow processes.
- Suitable for processing steel, stainless steel, non-ferrous metals, ceramics and plastics
| Designation | pH range | Properties | Properties | Properties | Foam | Comments |
|---|---|---|---|---|---|---|
| Pickling effect | Cleaning | Degreasing | Particularly suitable for... | |||
| trowal AG 26 | acidic | + | ++ | ++ | high foaming | Silver processing |
| trowal KP 12 | acidic | + | ++ | ++ | moderate foaming | |
| trowal FMV | acidic | + | ++ | ++ | high foaming | Rim treatment |
| trowal LZ 11 | strongly acidic | ++ | 0 | 0 | moderate | Copper and brass treatment |
trowapast grinding and polishing pastes produce high-gloss surfaces. They are primarily effective on flat surfaces, rather than on edges. They are used, for example, for finishing knives. They are usually applied using a flow-through system.
- Suitable for working on steel, stainless steel, non-ferrous metals, ceramics and plastics
| Designation | pH range | Properties | Properties | Properties | Properties | Remarks |
|---|---|---|---|---|---|---|
| Abrasive action | Polishing action | Corrosion protection | Applications | |||
| trowapast PKR | alkaline | ++ | +* | ++ | Pre-grinding – Polishing* | specifically for hard materials |
| trowapast PKS | alkaline | ++ | 0 | ++ | Grinding – Fine grinding | |
| trowapast PKZ | alkaline | ++ | + | ++ | Grinding – fine grinding | |
| trowapast PKV | alkaline | + | ++ | ++ | Fine grinding – polishing | |
| trowapast PKC | alkaline | ++ | ++* | ++ | Grinding – Polishing* | also for ceramic materials |
| trowapast PKP | alkaline | - | ++ | ++ | Polishing | |
| trowapast PKM | alkaline | - | ++ | ++ | Polishing | specifically for brass materials |
We would be happy to advise you personally on your specific application
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Our consumables experts will find the right solution for your specific application! Please feel free to get in touch directly or use the contact form.



















Bruno Andreas Barbeitos Helfrich
H.J. Helfrich Comércio e Equipamentos Lda
h.j.helfrich@sapo.pt

































