6 Factors To Consider When Choosing OR Using Carbide Roller

2016-06-08

Ribbed or smooth wires, cold rolled by tungsten carbide rollers has high quality surface and accuracy size. Surly only the right carbide rolls could ensure high quality wires.


Here are 6 factors for your reference when choosing or using tungsten carbide roller:


1.Choose the correct material grade.


Tungsten carbide rollers ( here means the cold rollers ) is widely used in wire industry . Which mainly own to the properties of tungsten carbide material:


1) High hardness and good wear resistance;

2) High mechanical strength;

3) High modulus of elasticity;

4) High density;

5) Corrosion resistance and good oxidation resistance.


This properties vary in different grades, and thats why we should select the right material grade for the roller.


YG15 and YGH30 are the 2 grades UKO carbide provide to our customer for cold rolling.


1) YG15: for rolling low carbon or middle carbon steel wire & machine speed less than 8 m/s;

2) YGH30 ( YG15C ): high carbon steel & machine speed more than 8 m/s.


2. Choose the right size.


Customers rolling different diameter wire should also use the proper roll size, below is UKO standard tungsten carbide roller size (mm) :


WIRE RANGE  Ø

OUTSIDE Ø  mm

INSIDE  Ø mm

THICKNESS mm(T)

4-8.5

123

82

15

9-12

123

82

20

4-8.5

125

82

15

9-12

125

82

20

4-8.5

140

90

15

9-12

140

90

20

4-8.5

150

90

15

9-12

150

90

20

Other sizes also could made by customer require.


3. Mark your logo/ size/ type on the roller surface for easy to remember.



4. Make sure the rolls are correctly installed to your cold wire rolling machines strictly as per the precision required by the design process.


5. Pay attention to cooling. 


Cooling is important to keep the rolls in good working performance, which can prevent the rolls from cracking and in slowing down the diffusion of cracks there by extending the life of grooves. UKO would suggest to keep the cooling water temperature below 25ºC , water pressure 5-6 bars with a water volume of 24-30m3 /hr/stand.


6. Repair & regrinding. 


Micro cracks would occur on the roller after a period use. If the Micro cracks extend to 0.2 mm, the roller should be reground.