Carbon Silicon Analyzer Probe Cups for Molten Iron

In modern foundries, rapid molten iron analysis is an important part of furnace and process control. Before casting, foundry operators need reliable information about the condition of molten iron, including carbon content, silicon content and carbon equivalent (CEL).

A carbon silicon analyzer provides this information by analyzing the cooling and solidification behavior of a molten iron sample. The sampling cup is therefore not simply a container. It is an important consumable that directly participates in the thermal analysis process.

CYY-LK series carbon silicon analyzers, including the CYY-LK2 and CYY-LK7 related models, are designed for rapid analysis of molten cast iron. The CYY-CE series probe cups are developed as matching consumables for this type of front-furnace thermal analysis application.

International foundry terminology commonly includes thermal analysis cup, carbon cup, C.E. cup, sampling cup and disposable measuring cup. Different cup structures and tellurium configurations are used according to the analysis objective and analyzer design.

What Is a Carbon Silicon Analyzer Probe Cup?

A carbon silicon analyzer probe cup is a refractory sampling cup used to receive a small quantity of molten iron from a furnace, ladle or other molten-metal source.

The sample is poured into the cup and its temperature change during cooling and solidification is monitored by the analyzer. The resulting cooling curve provides the basis for calculating metallurgical parameters such as:

• Carbon Equivalent (CEL)

• Carbon Content (C%)

• Silicon Content (Si%)

• Liquidus Temperature (TL)

• Undercooling-related parameters

• Other calculated properties depending on the analyzer model

For CYY-LK2、CYY-LK7, the thermal analysis method is based on the cooling curve of molten iron. The instrument can also provide estimated tensile strength and Brinell hardness for applicable unalloyed cast iron conditions.

This makes the probe cup + analyzer + sampling procedure a complete measurement process rather than an isolated consumable.

CYY-CE Series Carbon Equivalent Probe Cups

CYY supplies three main round probe cup configurations for different purchasing requirements and analyzer applications.

The three models have the same basic purpose—receiving a molten iron sample for thermal analysis—but differ in shell construction, tellurium configuration, insulation and positioning.

CYY-CE2 – Premium Insulated Tellurium CE Probe Cup

CYY-CE2 is our recommended round probe cup for CYY carbon silicon analyzer applications.

The cup uses a gray-green sand shell and contains tellurium particles. The external surface is covered with a complete insulating coating.

Compared with a basic low-cost cup, the CYY-CE2 is designed as a more controlled and stable consumable for routine production analysis.

The cup has a conventional round height rather than a high-leg structure and has been used with CYY carbon silicon analyzer applications after years of domestic production and sales experience.

For customers purchasing CYY-LK2, CYY-LK7 or compatible CYY front-furnace carbon silicon analyzers, this is the round cup configuration we normally recommend when the customer wants a balance of stability, repeatability and cost.

Key advantages

• Tellurium-filled design

• Full insulation coating

• Stable round cup structure

• Suitable for routine molten iron sampling

• Designed for thermal analysis applications

• Recommended for CYY carbon silicon analyzer systems

• Suitable for foundry production environments

• Available as a regular replacement consumable

Why the Sampling Cup Matters

The thermal analysis cup influences the thermal environment experienced by the molten iron sample.

Factors such as:

• cup material

• cup geometry

• sample volume

• internal tellurium configuration

• insulation

• thermocouple positioning

• cup holder

• pouring technique

can affect the cooling curve.

For this reason, a foundry should avoid changing between completely different cup constructions without checking the analyzer calibration and application.

Established thermal-analysis suppliers also classify cups according to geometry, filling material and application. For example, international thermal-analysis product ranges include cylindrical cups with plain or tellurium filling and other geometries for quality-control applications.

Recommended Application with CYY Carbon Silicon Analyzers

The CYY-CE series can be used as consumables for front-furnace molten iron analysis applications.

Typical workflow:

Molten Iron → Sampling Cup → Cooling Curve → Thermal Analysis → CEL / C% / Si% → Process Decision

The operator takes a representative molten iron sample and pours it into the prepared cup. The CYY analyzer records the temperature change during cooling and solidification and calculates the applicable analytical values.

For production foundries, this provides a practical way to obtain rapid process information directly near the furnace rather than waiting for laboratory analysis.

How to Choose the Correct CYY-CE Cup

If you are ordering cups for a CYY analyzer, we recommend providing:

1. Analyzer model

2. Existing cup photo

3. Cup packaging label

4. Analyzer connection or cup-holder photo

5. Approximate cup dimensions if available

Our sales and technical team can then confirm the most appropriate cup configuration.

Recommended choice

For CYY-LK2 / CYY-LK7 routine production use: CYY-CE2

For high-leg compatible configurations: CYY-CE1

For cost-sensitive standard applications: CYY-CE3

CYY Thermal Analysis Consumables

CYY is not only an analyzer manufacturer. We also provide consumables designed around practical foundry applications.

Our product range can be developed into a complete consumable family including:

• CE Probe Cups

• Carbon Silicon Analyzer Cups

• Thermal Analysis Cups

• SG / Nodularity Analysis Cups

• Square Carbon Silicon Cups

• Foundry Sampling Cups

• Molten Iron Sampling Consumables

For overseas customers, we recommend confirming the exact analyzer and cup configuration before placing a bulk order.

CYY-CE1 / CYY-CE2 / CYY-CE3 are CYY product models. Compatibility with a specific analyzer should be confirmed before purchase.