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YOUR REQUIREMENTS
Our range of services
Nehlsen-BWB not only handles large aircraft parts, but also products from the fields of automotive construction, military engineering, machine engineering, the precision engineering optics industry and even the aerospace industry. Our valued customer base also includes craft-based operations.

Close, mutual business relations as partners and contractors exist with the companies in the EADS European aircraft manufacturing consortium. We are processing a broad selection of products for the various Airbus options: from plain washers to the window-frames and safety-relevant components such as the elevator bolt or the large floor supports.

Large components - Our options

Nehlsen-BWB can even finish large and heavy light metal components: our hard anodising unit coats aluminium parts up to 3.5 tonnes in weight. This means that it is possible, for example, to manufacture ceramic hard oxide layers on aluminium tool moulds. Thanks to the high resistance to wear and corrosion, this means that a significantly longer lifetime can be achieved.

Range of services and dimensions of baths
Process
maximum part size
L x W x D
  Steel   CrNiSt   Cast work-piece   Aluminium   Titanium   Copper /
Brass
Mechanical pre-treatments
                         
Blasting (special fused alumina/ glass bead/etc.)
300 x 300 x 200                
Vibratory grinding
suitable small parts            
Chemical pre-treatments
                         
Alkaline degreasing
6000 x 700 x 2000                      
Solvent vapour degreasing
1900 x 550 x 400              
Etching/ Matt etching
6000 x 700 x 2000                      
Chemical polishing
2000 x 700 x 900                      
Electrolytic polishing
1200 x 700 x 500                      
Electrolytic surface conversions
                         
Anodising/Electrolytic oxidation
6000 x 700 x 2000                      
Anodising of titanium
2800 x 700 x 900                      
Hard anodising/ hard electrolytic oxidation
2800 x 800 x 1800                      
Chromic acid anodising
6000 x 700 x 2000                      
Anodising TSA
according to 80-T35-20
and AIPI02-01-003
  1600 x 800 x 700                •         
Electrochemical polishing of stainless steel
1200 x 700 x 500                    
Supplementary coloration processes
                         
Adsorptive coloration (Sandalor)
                         
- Black colour
6000 x 600 x 1800                      
- Gold colour
650 x 700 x 900                      
- Red, green, blue colour
750 x 700 x 900                      
- Stainless steel or titanium look colour
2000 x 700 x 900                      
Electrolytic coloration C0 and C35
6000 x 700 x 2000                      
Chemical surface conversions
                         
Chromating
6000 x 700 x 2000                      
RoHS-compliant chromating
1400 x 560 x 800                      
Acid passivation
700 x 750 x 900                      
Pickling and passivation
1400 x 560 x 800                      
Phosphating
1400 x 700 x 900                    
Electrolytic and chemical metal precipitation
                         
Copper plating
1400 x 560 x 800                  
Nickel plating
1400 x 560 x 800                  
Chemical nickel plating
1400 x 350 x 800            
Hard-chrome plating
1300 x 300 x 800                
Tin plating
1300 x 300 x 800            
Zinc plating and passivating (hexavalent chromium)
yellow

1300 x 490 x 750                  
black   700 x 650 x 900                  
Zinc plating and passivating (RoHS-compliant)
blue
thick-film passivation

700 x 650 x 900                  
Cadmium plating and chromating C
1400 x 560 x 800              
Silver plating
400 x 700 x 450                
Tin/Lead coating
600 x 500 x 900                      
Surface post-treatments
                         
Varnishing
according to AIPI05-02-009

6000 x 700 x 2000            
Teflon impregnation

2800 x 800 x 1800                      
Heat treatments in airtight conditions
1150 x 900 x 1400              
Anti-noise coating
                         
Film coating
                         
Services
                         
Supplementary work in upstream or downstream process
Quoted on request            
Transport
external                        
Environmental protection
                         
Chemical-physical waste water and waste disposal treatment CPA
Quoted on request