CEWELD


Dur CS Brazing




Dur CS

 
CATEGORY 
TYPE 
Composite Nickel Silver alloy with tungsten particles
APPLICATIONS 
The area to be hardfaced should be free of rust, scale, grease or other dirt. Slowly preheat the area to a maximum of 500°C (932°F). Sprinkle the surface with Ceweld Universal–Flux to prevent oxides from forming in the molten matrix during application.Once the area is properly heated,start brazing with L-CuNi10ZnF tinning rods (about 1 mm layer). Now apply DUR-CS. To make brazing easier dip the end in the brazing flux. NOTE: Do not overheat the hardfaced area. Particles can be pushed in correct position and dense configuration by using the end of the tinning Rod. Slow cooling is advised. Never cool area with water!
PROPERTIES 

DUR– CS consists of sintered tungsten carbide fragments in a ductile nickel silver matrix. The alloy has a tensile strength of 100,000 psi. DUR–C S production methods ensure an overall tinning of the sintered tungsten carbide particles. DUR–CS composite rods are available in two grades: Wear resistant and for cutting applications.

CLASSIFICATION
EN ISO 
14700:
SUITABLE FOR 

Downhole reamers, openers, fishing tools (spears), coring tools, reamers, milling tools, overshots, stabilizers, steel sawing, concrete drilling.

APPROVALS 
TÜV, CE approved
WELDING POSITIONS: 

Cu

Zn

Ni

WC particles

           

48

42

10

60%

           
MECHANICAL PROPERTIES

Heat

RP0,2

Rm

A5

Impact Energy (J) ISO-V

Melting point

Hardness

Treatment

(N/mm2)

(N/mm2)

(%)

-20°C

-40°C

°C

HRc / HV

   

800

     

900

 
REDRYING TEMPERATURE 
not required
BRAZING PARAMETERS / PACKING

Welding Parameters

Packing

particle size mm / (inch)

Length (mm)

Oxi / Acetylene

kg / pack

kg / 6pack

1,6 mm / 3,2 mm

450

neutral flame

5

30

2,0 mm / 4,0 mm

450

neutral flame

5

30

4,0 mm / 6,0 mm

450

neutral flame

5

30

6,0 mm / 8,0 mm

450

neutral flame

5

30







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