Wear protection on gears and races using Molybdenum


Asphalt mixing plant with friction drive

 

Test July 2003

Near the inlet a kit of 3x wear-protection adhesion blocs      type 10035 has been mounted. 

Outlet: no wear-protection blocs were mounted. 

 

Control order of client:

Covering and sealing of bootom side of gears and paper insert 

 

29.10.2003 - 9589 operating hours: 

Inserting control paper beneath the drive gears 

 

18.11.2003 - 9715 operating hours:

control pictures – see above

 

 


Metal-protection blocs are primarily delivered in bloc form with steel mountings and consis of molybdenum disulfide (MoS2) and some other components that support optimum friction coefficients. 

 

Metal-protection blocs coat metal surfaces with a very hard and solid protection layer of 0.005 to 0.01.

 

This layer produces a constant friction coefficient depending on the load

  • in case of lubrication blocs type 10036 and HG045 a low friction coefficient of 0.05 (manual lubrication with its disadvantages is redundant), the wear on treads is reduced considerably. 
  • in case of adhesion blocs type 10035 a higher friction coefficient  with adhesive function of 0.30 – 0.70 – dynamic friction coefficient, further protects the surfaces of flaking and wear. 

Respective steel mountings with spring steel compartment are included. The mounting is easy and cost-effective.

 

As for asphalt mixing plants tests have shown a 3-times extended maintenance interval of drive and support gears as well as races. 

 

Characteristics of wear-protection blocs:

  • dry, dust repellant, do not drop or drift  
  • work longterm and without maintenance 
  • coat dry and continuously 
  • waterproof
  • resistant to high temperatures (300 ºC); 
  • environmentally friendly (WK 1)

Application possibilities: 

  • support and drive gears
  • races, slewing rings
  • pressure gears in rotary kilns 
  • dryers, mills
  • cranes and railbound conveyors (i.e. high-bay warehouses) 
  • pulleys in wire-rope installations 
  • wheels of locomotive or wagon, etc. 


Mounting points of bloc-brackets on inlet gears through the cover. (illustration)

 

Mounting of 1 Kit / gear  adhesion or lubrication bloc with 2 to 8 blocs depending on gear-width. 

 

The coating „taken along“ and is applied to the ring and the gear above. 

After approx. 3-4 weeks the whole surface should be coated. In that way gears and rings run on a layer of molybdenum which protects the metal surface from wear. 

 

The operating life of gears and rings may be tripled.