Tungsten Carbide (TC) Rings for Rolling Mills
Kathuria Techmech supplies Tungsten Carbide (TC) Rings for high-speed steel rolling mill finishing stands. Our product range includes general Co-Ni-Cr binder grades and high-cobalt grades, available in plain, grooved and notched-groove profiles to suit different rolling mill requirements.
Explore grade-wise chemical compositions, hardness, density, bending strength and recommended cooling-water parameters to understand the available specifications. Contact our team with your required dimensions, groove profile and operating conditions for technical guidance and a competitive quotation.
General Grade Tungsten Carbide Ring Specifications
| Grade | Chemical composition, wt% | Physical and Mechanical Properties | |||
|---|---|---|---|---|---|
| WC (%) | Co+Ni+Cr (%) | Density g/cm³ ±0.15 | Hardness ≥ HRA ±0.5 | Bending strength ≥ N/mm² | |
| KTPL08R | 92 | 8 | 14.7 | 88.0 | 2800 |
| KTPL10R | 90 | 10 | 14.5 | 87.5 | 2750 |
| KTPL12R | 88 | 12 | 14.2 | 86.0 | 2700 |
| KTPL15R | 85 | 15 | 14.1 | 85.0 | 2650 |
| KTPL18R | 82 | 18 | 13.7 | 83.5 | 2650 |
| KTPL20R | 80 | 20 | 13.5 | 83.0 | 2600 |
| KTPL25R | 75 | 25 | 13.1 | 82.0 | 2500 |
| KTPL30R | 70 | 30 | 12.7 | 80.0 | 2400 |
| KTPL32R | 68 | 32 | 12.5 | 79.0 | 2400 |
High-Cobalt Tungsten Carbide Ring Specifications
| Grade | Chemical composition, wt% | Physical and Mechanical Properties | |||
|---|---|---|---|---|---|
| WC (%) | Co+Ni+Cr (%) | Density g/cm³ ±0.15 | Hardness ≥ HRA ±0.5 | Bending strength ≥ N/mm² | |
| KTPL06H | 94 | 6 + 0 + 0 | 14.8 | 89.0 | 2580 |
| KTPL08H | 92 | 8 + 0 + 0 | 14.7 | 88.5 | 2600 |
| KTPL10H | 90 | 10 + 0 + 0 | 14.5 | 88.0 | 2700 |
| KTPL15H | 85 | 15 + 0 + 0 | 14.1 | 85.0 | 2700 |
| KTPL20H | 80 | 20 + 0 + 0 | 13.5 | 83.0 | 2700 |
| KTPL25H | 75 | 25 + 0 + 0 | 13.1 | 81.5 | 2550 |
| KTPL30H | 70 | 30 + 0 + 0 | 12.7 | 80.0 | 2500 |
| KTPL32H | 68 | 32 + 0 + 0 | 12.5 | 78.5 | 2400 |
Tungsten Carbide Rings Without Grooves
Grooved Tungsten Carbide Rings
Notched-Groove Tungsten Carbide Rings
Cooling Requirements for Tungsten Carbide Rings
Recommended cooling-water pressure and flow rates for high-speed finishing mill applications are as follows:
Recommended water pressure range: 0.4–0.6 MPa
The cooling-water nozzle should be positioned to provide a radial spray at an angle of 15–30 degrees relative to the direction of ring rotation. Approximately 30% of the cooling-water flow should be directed from the hot-steel exit side. The distance between the nozzle and the carbide ring should be 150–250 mm, water should be directed straight into the grooves. The water-stream width should be twice the groove width. The water stream should remain concentrated and should not disperse into a fine mist.
Recommended Cooling-Water Flow Rate by Groove Width
| Groove width (mm) | <12 | 12-24 | 24-36 | 36-50 |
|---|---|---|---|---|
| Water flow rate (m3/stand ·hour) | 18 | 20 | 22 | 25 |
Cooling-Water Volume Requirements by Binder Content:
| Binder content (%) | 6 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|
| Water volume (L/min per mm of groove width) | 56 | 48 | 40 | 32 | 24 | 16 |
Recommended Cooling-Water Quality
pH ≥ 7.2 : KTPL H Series
pH below 7.2 : KTPL R Series
Solid-particle content should be ≤15 mg/L, with a maximum particle size of ≤40 µm.
Water temperature: ≤35°C
Cooling-Water Chemical Composition Requirements
| Composition | Chloride | Ca+ | Sulfate | Suspended solids |
|---|---|---|---|---|
| Quantity (mg/L) | ≤ 40 | ≤400 | ≤75 | ≤ 15 |
Frequently Asked Questions About Tungsten Carbide Rings
What are Tungsten Carbide Rings used for in rolling mills?
Tungsten Carbide Rings are used in high-speed finishing stands of steel rolling mills. Their hardness and wear resistance help maintain groove profiles and support consistent rolling operations.
What is the difference between general TC Rings and high-cobalt TC Rings?
General TC Rings use a Co-Ni-Cr binder composition, while high-cobalt TC Rings use cobalt as the binder phase. Their mechanical properties and operating suitability vary by grade and manufacturing specifications.
What groove profiles are available for Tungsten Carbide Rings?
TC Rings are available in plain, grooved and notched-groove profiles, depending on the rolling mill application and customer requirements.
How do I select the right TC Ring grade?
Grade selection depends on rolling speed, material being rolled, stand conditions, required hardness, toughness, cooling-water quality and expected operating performance.
Why is cooling important for Tungsten Carbide Rings?
Proper cooling helps control operating temperatures and thermal stresses, supporting stable performance and reducing the risk of premature ring damage.
How can I request a quotation for Tungsten Carbide Rings?
Contact Kathuria Techmech with your required grade, ring dimensions, groove profile, quantity and application details to request pricing and technical assistance.
Contact Us
Ghaziabad - 201009 (U.P.), India.
