Grate Bars

Customized Shell Mold Cast Grate Bars & Support Frame Assembly – Heat-Resistant Steel for Demanding Sintering Environments

At Y&J Industries, we manufacture precision components that form the backbone of modern sintering and mineral processing systems, delivering strength, durability, and efficiency in demanding metallurgical environments. Within our customized Mineral Processing parts portfolio, the grate bars and support frame assembly is the primary surface that directly carries the hearth layer and sinter mix while enabling controlled airflow through the material bed. Every assembly is fully customized – produced strictly to your engineering drawings or physical samples. You define the bar profile, gap geometry, material grade, and frame configuration; we focus on precision shell mold casting and can provide practical Design for Manufacturability (DFM) feedback to support reliable production.

Shell Mold Casting in Heat-Resistant Steel – Made Exclusively to Your Drawings or Samples

All grate bars and the associated support frame components we produce are manufactured via shell mold casting, using high-grade heat-resistant steel selected for its ability to withstand continuous high-temperature cycling, oxidation, and thermal fatigue. Y&J Industries is a Chinese manufacturer specializing in customized mechanical parts through integrated casting, forging, and machining. For grate bar assemblies, shell mold casting is the primary process – it delivers the fine surface finish, close dimensional control, and repeatable quality required for precise gap spacing and consistent air permeability.

Simply provide your complete engineering definition: 2D drawings (PDF, DWG), 3D models (STEP, IGES), or a physical sample of the bar and frame. Include your specified heat-resistant steel grade, any supplementary heat treatment requirements, and your acceptance criteria. We faithfully reproduce your assembly with strict dimensional checks and full material traceability. We do not offer design services; however, upon request we can review your design from a DFM standpoint, offering localized suggestions on draft angles, section transitions, or gating to improve castability and extend service life – without altering your functional intent. Minimum order quantity is not fixed; it is evaluated case by case depending on the specific alloy, casting complexity, and dimensions. We accommodate your order size, whether a replacement set or a full strand requirement.

Critical to Airflow, Load Support, and Smooth Sinter Discharge

The grate bars are laid and firmly secured on the support frame, which in turn mounts to the base of the pallet car. Together, they form the working surface that directly carries the hearth layer and the raw sinter mix throughout the entire sintering process. The design – provided by you – defines the precise gaps between bars. These gaps allow process air to be efficiently drawn through the material bed to promote proper ignition and downdraft sintering. At the discharge end of the machine, the same gap structure facilitates smooth and easy release of the finished sinter, reducing blockages and improving overall operational efficiency.

The support frame holds each bar in its exact position, maintaining gap integrity under heavy thermal and mechanical loads. By manufacturing both bars and frame from heat-resistant steel via shell mold casting, we help ensure:

Consistent airflow distribution for uniform sinter quality.

Robust load-bearing capacity to support the weight of the sinter mix at high temperature.

Dimensional stability to keep gaps within specification, preventing warping that could disrupt process air or discharge.

Extended service life under cyclic heating and cooling, reducing replacement frequency.

Because every grate bar and frame assembly is produced strictly to your design, it integrates seamlessly with your existing pallet car body and side plate configuration, maintaining the exact hearth geometry your process requires.

Why Y&J Industries for Your Customized Grate Bars & Support Frame Assembly?

True build-to-print manufacturing – Each bar and frame component is shell mold cast and finished exactly to your approved engineering data.

Shell mold casting expertise – Consistent surface quality, tight dimensional control, and sound material structure for long service life.

Heat-resistant steel specialization – You specify the alloy grade to match your temperature and oxidation conditions; we cast and verify with full mill certificate traceability.

DFM partnership without design interference – We respect your engineering ownership while providing casting insights when requested.

No fixed MOQ – Whether a single set for maintenance or a full order for a new sinter strand, we adapt to your quantity.

Global supply – We serve sinter plant operators, OEMs, and mineral processing facilities across more than forty countries.

Documented quality – Dimensional inspection reports, material certificates, and visual acceptance per your criteria.