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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 Airbus 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