Introduction
In the continuous casting process, the copper mould tube is the heart of the machine. It directly determines the surface quality of your billets, the efficiency of your caster, and the lifespan of your equipment.
Recently, we received an inquiry from a steel industry equipment supplier in Iran looking for a qualified manufacturer of copper mould tubes for billet continuous casting. Their requirements were highly specific:
Application: Billet Continuous Casting
Billet Sizes: 130×130 mm, 125×125 mm, 150×150 mm, 100×100 mm
Mould Tube Dimensions: R4000, R6000, L812mm, L900, L801
Material: Copper grade to be specified
Wall Thickness: Customizable
If you are sourcing copper mould tubes for similar applications, this guide will help you understand the key technical parameters and how to get the right offer.
1. Why Billet Size Matters for Copper Mould Tubes
The inquiry mentions multiple billet sizes: 130×130, 125×125, 150×150, and 100×100. This indicates a need for flexibility in production.
As a copper mould tube manufacturer, we design tubes with precise inner geometries to match these square billet dimensions. The inner corner radius (typically R6-R10) and the taper (single, double, or parabolic) are engineered based on your casting speed and steel grade. For a 130×130 mm billet, for example, the tube must maintain strict tolerances to prevent corner cracks and ensure smooth withdrawal.
2. Understanding R4000 and R6000: The Radius of the Mould
The inquiry specifies R4000 and R6000. This refers to the radius of curvature of the mould tube. Continuous casting machines are either straight or curved. A radius of R4000 mm or R6000 mm means the tube is bent to match the arc of your caster.
R4000: Typically used for smaller billet casters with a lower machine height.
R6000: Common in medium-sized casters for better metallurgical length.
When you request a quote for a copper mould tube, always provide the radius. A mismatch here will make the tube unusable.
3. Copper Material Grade: Why You Must Specify It
The inquiry asks for the copper material/grade to be specified. This is crucial because the copper mould tube must balance two conflicting properties:
High thermal conductivity (to extract heat fast).
High strength and wear resistance (to withstand friction from the solidifying shell).
Common grades include:
Cu-DHP (Phosphorus Deoxidized Copper): Good conductivity, used for lower-speed casters.
CuAg (Silver-bearing Copper): Higher strength and softening temperature, ideal for high-speed casting.
CuCrZr (Chromium Zirconium Copper): Excellent combination of strength and conductivity, the standard for demanding billet casters.
Our advice: For billet sizes like 150×150 mm, we often recommend CuAg or CuCrZr to extend mould life. The customer should specify the grade based on their casting speed and steel grade.
4. Wall Thickness: The Key to Heat Transfer
The inquiry states “Copper tube wall thickness: Please specify.” This is not a detail to be left vague.
The wall thickness affects:
Heat extraction rate: Thinner walls transfer heat faster but may deform under thermal stress.
Mechanical strength: Thicker walls resist deformation but reduce cooling efficiency.
For billet casters, typical wall thickness ranges from 8 mm to 14 mm. We calculate the optimal thickness based on your:
- Casting speed (m/min)
- Steel grade (carbon content affects shrinkage)
- Water flow rate and pressure in the mould
We do not just sell standard tubes; we engineer the wall thickness to match your operating parameters.
5. Length (L812mm, L900, L801) and Customization
The inquiry lists specific lengths: L812mm, L900, and L801. These are not arbitrary numbers; they correspond to the mould assembly design of the caster.
As an OEM copper mould tube supplier, we manufacture tubes to exact lengths, including the flange and taper. We can also provide:
Chromium plating for extended wear resistance.
Nickel plating for specific steel grades.
Custom machining for your clamping system.
How to Get an Accurate Offer for Copper Mould Tubes
If you are a steel plant or equipment supplier like HSF SPADANA, here is the checklist we need to provide you with a precise technical and commercial offer:
- Billet Size: (e.g., 150×150 mm)
- Radius: (e.g., R6000)
- Length: (e.g., L900 mm)
- Copper Grade: (e.g., CuAg or CuCrZr)
- Wall Thickness: (e.g., 10 mm or your requirement)
- Taper: (Single, double, or parabolic)
- Water Pressure & Flow Rate: (To verify cooling design)
- Quantity: (Annual or per order)
Why Choose Us as Your Copper Mould Tube Manufacturer?
10+ Years Experience: We have supplied copper mould tubes to steel mills in over 20 countries.
OEM Manufacturing: We produce according to your exact drawings or samples.
100% Inspection: Every tube is tested for dimensional accuracy, conductivity, and pressure tightness before delivery.
Technical Support: We help you select the right grade and wall thickness for your caster.
Looking for a reliable copper mould tube supplier for your billet continuous casting line?
Contact us today with your specifications. Whether you need 130×130 mm, 150×150 mm, or custom sizes, we are ready to provide a competitive offer.
E-mail: cykc@cykcgroup.com.cn
WhatsApp: +86 13002426049