Heat Resistant Castings
Grate Cooler Plates
Clinker cooler plates live in the worst combination there is: high temperature, thermal cycling and abrasive clinker. Alloy choice and rib design decide how long they last.
- Service normally under 1100 °C
- GB 9437, GB/T 20878 and EN 10295 grades
- Cast to your existing cooler drawing
- Composition verified by spectrometer
Product Overview
About This Programme
Grate plates for grate coolers are one of the main heat resistant castings we produce. They are used in cement plants where clinker leaves the kiln and has to be cooled quickly while air is blown up through the grate.
Two things kill cooler plates. Thermal fatigue cracks them from the surface down as the plate cycles between hot clinker and cooling air, and clinker abrasion thins the ribs and the air slots. A higher alloy grade helps both, but it costs more, so the right answer depends on the cooler and the clinker.
Key Benefits
Key Benefits
Why buyers move this part to us, in their words rather than ours.
Verified alloy content
Nickel and chromium are exactly what a cheap supplier cuts. We measure composition by optical emission and handheld spectrometer and report it.
Cast to your cooler
Produced to your existing drawing or reverse engineered from a worn plate, so the plate drops into the existing frame.
Stocked ahead of shutdowns
Where the shutdown date is known, plates can be produced ahead so the cooler is not waiting on castings.
Application Scenarios
Application Scenarios
- Cement clinker grate coolers
- Lime plant coolers
- Sinter cooling lines
- Other high temperature grate applications
Who It Is For
Who It Is For
Cement plant maintenance managers
Replacing rows of plates on a planned shutdown.
Cement equipment OEMs
Buying plate sets as part of a cooler rebuild.
Plant engineering contractors
Sourcing replacement plates during a cooler upgrade.
Problems It Solves
Problems It Solves
If one of these is happening on your plant, send us the part and the current life figures.
- Plates cracking from thermal fatigue long before they wear out
- Air slots closing up and reducing cooling efficiency
- Alloy content cut below specification so plates fail early
- Plates that do not fit the existing frame after a supplier change
- Unplanned cooler stops because replacement plates were not in stock
Technical Features
Technical Features and Materials
Grades
RTCr, RTCr2, RTCr16 and the RQT series to GB 9437; 06Cr25Ni20, ZG40Cr25Ni20Si2 and ZG40Cr25Ni12Si2 to GB/T 20878; 1.4777, 1.4837 and 1.4848 to EN 10295.
Service temperature
Normally used under 1100 degrees Celsius.
Geometry
Cast to your drawing including air slot geometry and fixing detail.
Verification
Composition by spectrometer, dimensional check against drawing or sample.
Manufacturing Process
Manufacturing Process
The moulding route is chosen for the part. It is confirmed in writing with the quotation, together with the tolerance class and the machining allowance.
| Process | Best Suited For | Tolerance | Piece Weight |
|---|---|---|---|
| Green sand process | Small and medium parts with low dimensional requirement | CT11–CT14 | 0.2–200 kg |
| Resin sand process | Medium and large parts with high dimensional requirement | CT10–CT11 | 100–3000 kg |
| Shell molding process | Small and medium parts with strict dimensional requirement | CT7–CT9 | ≤50 kg |
| Lost foam process | Small and medium parts with complex structure | CT7–CT9 | ≤100 kg |
| Vacuum process | Medium and large parts needing good surface roughness | CT7–CT9 | ≤10000 kg |
Quality Control
Quality Control and Certification
Inspection is planned at the stages where a problem is still cheap to fix.
- Chemical composition by optical emission and handheld spectrometer
- Hardness tested and reported on every batch
- Dimensions checked against your drawing or the master sample
- Non destructive testing by magnetic particle, penetrant or ultrasonic method where the drawing requires it
Certification documents are issued by the producing factory for the specific order. Ask for the certificate package that applies to your part before you place the order.
Customization
Customization Options
Material and grade
Any grade in the programme, or a grade you nominate with the local equivalent confirmed before production.
Geometry and fixing
Produced to your drawing or reverse engineered from a worn sample, including bolt and seat geometry.
Marking and packing
Part number marking, position marking for sets, and export packing agreed before production.
Use Guide
How to Order
STEP 01
Send the drawing or the worn part
A drawing, a 3D file, or photographs with overall dimensions and the machine details. Add the annual quantity.
STEP 02
Confirm material and construction
We propose the grade and, where relevant, the construction, and explain the trade off against your current part.
STEP 03
First article
Tooling is made and the first article is measured and tested before the batch is released.
STEP 04
Batch and inspection
Stage inspections during production and a final inspection to the agreed standard with the reports you need.
STEP 05
Packing and shipment
Export packing marked with your part numbers, with the shipping documents you require.
FAQ
Questions About Grate Cooler Plates
Which grade should I use for cooler plates?
Can you produce to our existing drawing?
How do you prove the alloy content?
What service life should I expect?
Can you deliver ahead of a planned shutdown?
Send the Part and We Will Quote It
Photographs of the worn part with dimensions and the machine details are usually enough to start. Our engineers reply with the material, the construction and a price.