Grate bars and cross bars

These parts carry or move clinker straight from the kiln. They meet hot clinker above, cooling air below and constant abrasion.

Works in: Clinker coolers: grate bars and the cross bars that convey clinker in cross-bar coolers.
Industries: Cement
Materials: Heat-resistant steel, Carbon or low-alloy steel
Size: Single pieces from 3 kg to 7 tonnes, to drawing
Supplied: As cast, or machined to drawing
Inspection: Chemistry and hardness on every heat; UT, MPI or DPT and a dimensional report as specified
From a worn part: Yes. Send the part or photographs with key dimensions and we will reverse-engineer it

How it fails and what we do about it

FailureOur answer
01Abrasion of the conveying facesGrade chosen zone by zone along the cooler.
02Warping from a hot top and a cool undersideSections designed to stay straight under that gradient.
03Cracking at fixingsFixing points to drawing, with sound metal at the bores.

Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.

Usual choice

Hot inlet and recuperation zones.

HH≈1,100 °C

HK≈1,150 °C

06001,200 °C

IS 4522 · IS 519 · ASTM A297 · ASTM A447 · EN 10295

Alternative

Later zones, where wear rather than heat decides life.

150–300 HB

100400750 HB

ASTM A27 · ASTM A148 · IS 1030 · IS 2644 · EN 10293

Chemistry firstChromium and nickel verified on the spectrometer for every heat and recorded against the casting.
Designed to stay straightRibs and sections arranged so the part can expand without warping.
Fit-up checkedSegments, hangers and interlocks checked so sets assemble on site without rework.
Traceable to the heatEvery casting carries its heat number, with the chemistry report to match.

No drawing? Send the worn part or photographs with key dimensions and we will reverse-engineer it.

A metallurgist reviews every enquiry and replies with a price, a lead time or the right questions.

The kiln inlet and outlet: nose-ring tip castings, outlet sectors and inlet segments.

Brick-retaining segments at the kiln ends.

Segmented dip tubes, also called vortex finders or thimbles, in preheater cyclones.

Meal dispersion and splash plates at the meal inlets of preheater riser ducts.