Product Introduction

The RTCr16 Custom Cast Water-Cooled Grate is a high-performance heat-resistant cast iron component. In addition to RTCr16, we can also offer other custom casting materials to meet diverse customer requirements. It is specifically engineered for demanding combustion environments and is suitable for municipal solid waste incinerators, biomass power plants, coal-fired boilers, cement kilns, and industrial furnace systems. This water-cooled grate bar is manufactured using precision sand casting technology combined with high-chromium heat-resistant cast iron material, delivering exceptional service life in high-temperature, high-wear operating conditions.

As one of the core components in mechanical grate incinerator systems, our RTCr16 cast water-cooled grate supports fuel or waste while maintaining combustion airflow, and is capable of withstanding extreme temperatures, corrosive flue gases, ash, slag, and thermal cycling.

Key Features & Advantages

Superior Heat Resistance – Up to 900°C

RTCr16 water-cooled grates maintain structural integrity and mechanical properties at operating temperatures up to 900°C (1,652°F) . The high chromium content (15-18%) promotes the formation of a stable, adherent chromium oxide scale that prevents further oxidation and metal loss. Unlike ordinary cast iron grades that deform or oxidize rapidly above 500°C, our RTCr16 casting grates provide reliable long-term performance in high-temperature combustion zones.

Outstanding Wear & Abrasion Resistance

RTCr16 heat-resistant iron exhibits exceptional wear resistance both at room temperature and elevated temperatures, making it ideal for handling high-ash fuels such as biomass, coal, and municipal solid waste (MSW) with abrasive characteristics.

Custom Casting to Your Exact Specifications

Each custom cast water-cooled grate is manufactured to match your:

Original equipment manufacturer (OEM) drawings and dimensions
Specific grate bar geometry (moving grate bars and fixed grate bars)
Water cooling channel configuration
Mounting interface requirements
Unique application demands

Built-in Water Cooling Cavity – Extended Service Life

Our water-cooled grate bars feature an integral cast-in water cooling cavity (or pre-embedded cooling tubes), engineered to reduce grate bar surface temperature significantly. According to patented casting water-cooled grate technology:

Surface temperature reduced to below 250°C compared to traditional uncooled designs
Service life extended by 5+ years
Maintenance intervals extended by 20% or more
Dramatically reduced operational costs

The internal water cavity allows cooling water circulation, which minimizes thermal stress, prevents thermal fatigue cracking, and eliminates high-temperature creep deformation common in uncooled grate bars.

With water cooling, the grate bar surface temperature can be maintained as low as 200°C or even below, reducing thermal stress during operation and preventing high-temperature damage while minimizing material consumption and lowering operational costs.

Technical Performance Comparison

Material Grade	Max Operating Temp	Oxidation Resistance	Wear Resistance	Suitable Fuel Types
HT200	480°C	Poor	Low	Low calorific coal
HT250	520°C	Moderate	Moderate	Low calorific coal
RTCr	550°C	Good	Moderate	Low calorific coal
RTCr2	600°C	Good	Moderate	Medium-high calorific coal, biomass
RTCr5	700°C	Very Good	Good	High calorific coal, biomass
RTCr16	900°C	Excellent	Excellent	All high calorific coals & biomass
RTSi5	700°C	Good	Brittle	High calorific coal, biomass
RTQSi5	800°C	Good	Moderate	High calorific coal, biomass