What it is
A covering-powder family used to insulate tundish steel, isolate air and—depending on formulation—assist inclusion absorption; acidic, basic or dual-layer systems must match steel grade and refractories.
Continuous-casting auxiliaries · Tundish
Tundish covering compound
A covering-powder family used to insulate tundish steel, isolate air and—depending on formulation—assist inclusion absorption; acidic, basic or dual-layer systems must match steel grade and refractories.
Product codeCC-TUNDISH-COVER
Industry application1
Key indicators主要氧化物 / 碳质体系 · 碱度 / 熔化或烧结特性 · 水分 / 堆积密度 / 铺展性
Order boundaryQuotation and order confirmation
QUICK DECISION
Four answers before reading the technical detail
This section supports initial screening; final grade, addition and effects require operating conditions, formal documents and plant validation.
What it does
- Tundish insulation
- Air isolation
- Support for clean-steel control
Where it fits
- Tundish surface coverage after start and throughout the casting sequence
Boundary not to miss
- Acidity/basicity, melting or refractory mismatch can contaminate steel, entrain slag, crust or disturb nozzle flow
SELECTION BOUNDARY
Start with the selection boundary
Tundish cover is not mould flux, ladle cover or synthetic refining slag; the generic name covering powder does not permit cross-location use.
PRODUCT MANUFACTURING
Product manufacturing process
Formulation and manufacturing route for casting powders depend on the specific product. A general route may include mineral, fluxing and carbonaceous feed review, metered blending and—according to the supplier route—raw-material, premelted/fused-and-crushed, spray-granulated or another verified process, followed by homogenization, screening, physical-property testing and moisture-protected packing. Different use locations must retain separate product identities.
- 01Verify mineral, fluxing and carbonaceous feeds and formulation identity
- 02Meter and blend to the approved formula and apply necessary premelting or fusion
- 03Crush and classify, spray-granulate or prepare the dedicated powder/granule form under the actual route
- 04Homogenize and sample, then test chemistry, melting, viscosity/rheology, crystallization or exothermic-related properties
- 05Segregate by use and grade, pack against moisture and retain lot traceability
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
Specification selection must confirm product identity, guaranteed chemistry, sizing, form, packing, test method and order use together.
- 01Confirm formal product identity, applicable standard, supplier grade and actual production route
- 02Fix principal chemistry, limiting items, physical indicators and the corresponding test methods
- 03Confirm form, size distribution, fines, moisture, flowability or unit mass for storage, handling and charging equipment
- 04Confirm pack, label, TDS, SDS/PSI, sampling rules and lot COA
GRADES & SPECIFICATIONS
Grades, specifications, indicators and packaging
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
| Grade / family | Chemistry | Size and form | Packaging |
|---|---|---|---|
| Specification direction 01Tundish covering compoundConfirm grade, applicable standard and guaranteed values before quotation |
| Confirm against the addition method, equipment and order requirements | Confirm pack format, net weight and labels in the quotation and order |
ORDER SPECIFICATION CONFIRMATION
What must be confirmed before this becomes an order specification
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
- 01Confirm the product, grade, application and supply scope
- 02Fix guaranteed chemistry, sizing, form and packing in the quotation and order
- 03Agree sampling, test methods, acceptance rules and lot COA fields
- 04Confirm the required TDS, SDS/PSI, labels and delivery documents
SELECTION AND COMPARISON
Compare specification directions by indicators and operating conditions
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
01Specification direction
Tundish covering compound
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- 主要氧化物 / 碳质体系碱度 / 熔化或烧结特性水分 / 堆积密度 / 铺展性
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
INDUSTRY APPLICATION
Industry, furnace, material and addition point
Confirm the process position before method and quantity calculations; an application relationship for one furnace or material must not be copied to another.
Steelmaking plants
Tundish surface coverage after start and throughout the casting sequence
- Furnace / equipment
- Continuous-casting tundish
- Material / output
- Steel requiring insulation, reoxidation isolation and a cleanliness review
APPLICATION METHOD
Use scenarios, method, effect and risk validation
After tundish receipt and level stabilization, apply an even designed layer matched to the impact zone, working lining, stopper/slide gate and clean-steel requirements. A qualified system can lower surface temperature loss and air contact and support inclusion control; acidity/basicity, melting or lining mismatch can entrain slag, crust, contaminate steel or disturb nozzle flow. Verify with temperature-loss, inclusion, level and nozzle records; it is not mould flux.
- 01Confirm steel grade, process point, equipment, initial state, process objective and prohibited conditions
- 02Check the actual SKU, lot COA, TDS, SDS/PSI and site history
- 03Run a small site trial from mass/heat balances or the equipment window without copying a fixed cross-plant dose
- 04Resample or record slag, steel, temperature, equipment response, defects and performance before approval, correction or stop
PROBLEM AND SOLUTION
From operating objective to effect verification
Each application explains the role, method, quantity principle and risk boundary; the final proposal is confirmed against operating conditions and lot documents.
01
Steelmaking plants
Tundish surface coverage after start and throughout the casting sequence
- Furnace / equipment
- Continuous-casting tundish
- Material / output
- Steel requiring insulation, reoxidation isolation and a cleanliness review
- Method
- Apply an even designed layer after tundish receipt and level stabilization, avoiding incompatibility with the impact zone, stopper/slide-gate mechanism and working lining.
- Quantity determination
- Determine from tundish surface area, cover depth, bulk density, residence time and temperature-loss/cleanliness trials.
Expected effects
- Can reduce tundish-surface heat loss and air contact and support inclusion control when the system is matched
Limits and risks
- Acidity/basicity, melting or refractory mismatch can contaminate steel, entrain slag, crust or disturb nozzle flow
STORAGE & SAFETY
Storage, handling and risk
- Keep dry, segregate grades and control dust; avoid tundish heat, steel streams and moving mechanisms during addition.
This section does not replace the company's final SDS/PSI or the plant safety procedure.
REFERENCE AND ORDER BOUNDARY
Use industry references to understand, then order documents to confirm
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
DOCUMENTS & MEDIA
Images, TDS, SDS and COA
Document availability depends on the product, lot, destination market and order agreement.
TDS
Confirms product identity, guaranteed indicators, sizing, form and packing.
SDS / PSI
Confirms storage, handling, protection and market-specific safety information.
COA
Links a specific lot to test items, results, methods and issue information.
INDUSTRY TECHNICAL REFERENCES
Selected external reference material
The following items come from licensed public media or original producer websites and explain similar products or typical processes only. They are not Jinsheng photographs, TDS, SDS or lot COA and create no supply commitment.
COA field template (not a certificate)
A blank structure for lot, chemistry, sizing, method, disposition and issue data. It contains no test result and cannot be used for delivery.
Jinsheng blank COA field template · 2026-08-14Open field template ↗SOURCES
Public references and verification dates
- Vesuvius acidic and basic tundish-covering powder families ↗Manufacturer source · 2026-08-19
- Opta granular products for steelmaking ↗Manufacturer source · 2026-08-19
Public sources supplement general facts; they do not replace Jinsheng's formal product specification, TDS or lot COA.
INQUIRY PREPARATION
Prepare these operating conditions for a more precise technical response
Please provide the specification, quantity, destination, and contact information.
Already includedCC-TUNDISH-COVERTundish covering compound
- 01Target industry, steel grade or casting material
- 02Furnace type, equipment, melt weight and current operating practice
- 03Measured chemistry, target chemistry and permitted residuals
- 04Planned addition point, temperature, slag and stirring conditions
- 05Current product, addition, recovery or operating-issue record
- 06Required size, form, packaging, quantity and destination
- 07Available melt analysis, microscopy, photographs or trial results
TECHNICAL AND QUOTATION CONSULTATION
Send the operating conditions for human review
Domestic inquiries are handled by the Domestic Sales Department and international inquiries by the International Sales Department. Price, availability and lead time are confirmed for each inquiry based on specification, quantity and delivery location.