Systems and processes for mass finishing, blast technology, small part coating and process water treatment
Walther Trowal LLC
Michigan (USA)New on Amplifa
About Walther Trowal
Walther Trowal LLC is a manufacturer of standard and special-purpose machines for the surface treatment of metal parts. The portfolio includes mass finishing systems (vibratory finishing/trowalizing), blast finishing systems, small part coating machines as well as process water and wastewater treatment systems. The offering is complemented by in-house production of blasting and grinding media (ceramic and plastic media, polishing media, pastes), compounds and flocculants for environmentally friendly treatment of process water. Based on sample workpieces, the company's own test laboratory develops customer-specific processes for surface technology and small part coating. Automation and linking of systems create modular system solutions; service, spare parts, replacement work bowls with polyurethane lining (replacement bowl program) and maintenance round out the offering. According to the company, German engineering tradition (origins from 1933) forms the foundation of engineering and process development; the US company serves the American market from its location in Michigan with deliveries ex works in USD.
- Site
- Michigan (USA)
- Processes
- Mass Finishing (Mass finishing technology), Blast Finishing, Small Part Coating (coating of small parts, e.g. decoration, adhesive, lubricant), Process Water Technology (process water / wastewater treatment), Deburring (burr removal, rough finishing), Polishing / fine finishing (polishing, refining, preplate finish), Pressure deburring, Surface preparation for electroplating (surfaces ready for electroplating)
- Materials
- Steel, Polyurethane (PU), Die-cast metal, Ceramic (grinding media), Plastic (grinding media), Mass Finishing (vibratory finishing/trowalizing), Blast Finishing, Small Part Coating
- Certificates
- Test laboratory for process development
- Industries
- Surface technology, Metal processing, Metal Surface Finishing / Surface technology
- 01
Engineering and process development
- 02
System construction (standard and special-purpose machines)
- 03
In-house media and compound production
- 04
Test laboratories for process development
- 05
Service, repair and spare parts
Materials and Processes
Mass Finishing (vibratory finishing/trowalizing)
Combination of machine, grinding media and compound for deburring, polishing and surface preparation of metal parts.
Blast Finishing
Blasting for surface preparation and cleaning of metal workpieces.
Small Part Coating
Coating of small parts, e.g. with decoration, adhesive or lubricant, in drum systems.
Process Water Technology
Treatment of process water; flocculants bind abrasion, metal and oil into large flocs.
Ceramic Grinding Media
High density enables high abrasion pressure and fast deburring with long service life.
Plastic Grinding Media
Gentle processing of soft surfaces such as die castings; dimensionally stable and splinter-resistant.
Polyurethane Lining
Wear-resistant lining of steel work bowls, including a relining program.
Steel
Material of the work bowls of mass finishing systems.
Locations
Michigan (USA)
USSales and service branch for the American market
- Mass finishing systems
- Blast finishing systems
- Small part coating systems
- Process water systems
- Surface technology test laboratory
- Small part coating test laboratory
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Mass Finishing (Mass finishing technology)Surface | – | – | – | – | Metal |
| Blast FinishingSurface | – | – | – | – | Metal |
| Small Part Coating (coating of small parts, e.g. decoration, adhesive, lubricant)Surface | – | – | – | – | – |
| Process Water Technology (process water / wastewater treatment)Surface | – | – | – | – | – |
| Deburring (burr removal, rough finishing)Surface | – | – | – | – | Metal |
| Polishing / fine finishing (polishing, refining, preplate finish)Surface | – | – | – | – | Metal |
| Pressure deburringSurface | – | – | – | – | Metal |
| Surface preparation for electroplating (surfaces ready for electroplating)Surface | – | – | – | – | Metal |
| Degreasing / cleaning / corrosion protection using compoundsSurface | – | – | – | – | Metal |
| Drying of workpieces (drying media)Surface | – | – | – | – | Metal |
| Test Lab Services: process development surface technology (trowalizing/blasting)Testing | – | – | – | – | – |
| Test Lab Services: process development small part coatingTesting | – | – | – | – | – |
| Repair & maintenance of systems / replacement bowl program (relining of work bowls withSurface | – | – | – | – | Steel, Polyurethane |
| Manufacture of standard and special-purpose machines for surface treatment (modular,Engineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Mass finishing machines (vibratory/trowalizing machines with work bowl, separator, | Walther Trowal | – | – | – | – |
| Blast finishing machines (blast systems) | Walther Trowal | – | – | – | – |
| Small part coating machines (small part coating systems with drum) | Walther Trowal | – | – | – | – |
| Process water technology systems (process water / wastewater treatment) | Walther Trowal | – | – | – | – |
| Standard and special-purpose machines for surface treatment (modular system solutions) | Walther Trowal | – | – | – | – |
Additional services
Quality
Quality control takes place, among other things, as part of the replacement bowl program: steel structures are inspected, repaired and relined with new polyurethane; test laboratories support process development on customer parts.
| Evidence | Michigan (USA) |
|---|---|
| Test laboratory for process development |
History
- 1933
German roots of the company as the basis for engineering and process development; founding year of the US company not documented