1.4823 Heat Resistant Steel Casting Grate Bars

Part Name: China moving grate bars for boiler and incinerators.

Metal: Cast steel DIN 1.4823 other heat resistant steel travelling grate bars

Dimensions: Outer diamater 55-2000mm, Length will be as per your drawings.

Metal casting: shell mold casting or investment casting

Quality control: Chemical analysis by spectrometer for each heat, PT, Visual inspect 100%, Dimension Check.

Baoding Guokun can produce and export various moving grate bars, traveling grate bars, fixed grate bars, reciprocating step grates, slope grate bars, and all other boiler grate bars and incinerator grate block bars. If need, please contact gina@guokuncasting.com.

Sand Casting Tags: Grate bars

Description

Baoding Guokun specializes in OEM manufacturing of 1.4823 heat resistant steel casting grate bars using advanced shell molding casting technology. As a professional heat-resistant steel foundry, we produce a comprehensive range of grate bars including moving grate bars, traveling grate bars, fixed grate bars, reciprocating step grates, and slope grate bars for industrial boilers, incinerators, and sintering machines.

Material Specification: 1.4823 (GX40CrNiSi27-4) – Premium heat-resistant cast steel engineered for continuous high-temperature operation up to 1100°C, offering exceptional oxidation resistance, thermal fatigue resistance, and structural stability in extreme combustion environments.

Baoding Guokun also can customize metal chemical composition to meet your site’s fuel conditions.

Cast iron grate bars: HT200, HT250, RTSi5, ROTSi5, RTCr16, RTCr28, RTCr5, RTCr2Si4Mo, ZG40Cr24, etc. Heating resistant from 550-1200 °C

Heat resistant steel grate bars: DIN 1.4710, DIN 1.4729, DIN 1.4740, DIN 1.4743, DIN 1.4745, DIN 1.4776, DIN 1.4777, DIN 1.4823, DIN 1.4825, DIN 1.4826, DIN 1.4832, DIN 1.4849, DIN 1.4825, DIN 1.4849, DIN 1.4852, DIN 2.4778 heat resistant cast steel moving grate bars

Shell Molding Casting: Our Core Advantage

We employ shell mold casting (Croning Process) as our primary manufacturing method, delivering superior quality compared to conventional casting techniques:

The process of Baoding Guokun sand casting involves several steps after producing a professional tool or mold, including:

No.	Steps	Details
1	Pattern Creation	A two-piece metal pattern is created in the shape of the desired part, typically from iron, aluminum or wooden material.For a single casting or small batches of castings, we prefer to produce to use the wooden material to manufacture the mold to save money for customers.For other sand casting parts in large quantity, we prefer to use aluminum or iron to improve the mold’s service life.
2	Mold creation & assembly	The two shell halves are joined together and securely clamped to form the complete shell mold. If any cores are required, they are inserted prior to closing the mold. The shell mold is then placed into a flask and supported by a backing material.
3	Pouring	The mold is securely clamped together while the molten metal is poured from a ladle into the gating system and fills the mold cavity.
4	Cooling	After the mold has been filled, the molten metal is allowed to cool and solidify into the shape of the final castings.
5	Casting removal	After the molten metal has cooled, the mold can be broken and the casting removed. Trimming and cleaning processes are required to remove any excess metal from the feed system and any sand from the mold
6	Machining	CNC machining as per customer’s drawings.

pouring of shell mold casting in Baoding Guokun sand casting factory

Key Benefits of Shell Molding Casting

Exceptional Surface Finish: Achieves surface roughness as fine as Ra 2.5-12.5 µm, significantly reducing post-processing requirements
Tight Dimensional Tolerances: Precision within ±0.25mm, ensuring perfect fit and interchangeability
Consistent Quality: Rigid thin-shell molds (9-20mm thickness) minimize casting defects and variations
Cost-Effective Production: Reusable metal patterns enable efficient medium-to-high volume manufacturing
Faster Lead Times: Simplified process flow reduces production cycles by 30-50% vs. investment casting

Shell Molding vs. Investment (Lost Wax) Casting: Comparative Analysis

Understanding the trade-offs between these two precision casting methods is critical for optimal grate bar production:

Parameter	Shell Molding Casting	Investment (Lost Wax) Casting
Dimensional Accuracy	High (±0.25mm) – Excellent for grate bar applications	Very High (±0.10mm) – Overkill for most grate components
Surface Finish	Good (Ra 2.5-12.5 µm) – Meets all industrial requirements	Excellent (Ra 0.8-3.2 µm) – Premium finish rarely needed for grate bars
Production Cost	30-50% LOWER – Economical for medium-high volume	Higher – Premium pricing for ultra-precision
Lead Time	Faster – 7-15 days standard	Longer – 14-28 days due to multi-step ceramic shell process
Part Size Range	Ideal for small-to-medium grate bars (0.5-50kg)	Limited to smaller components (typically <25kg)
Volume Efficiency	Excellent for batch production (500-50,000 pcs)	Better suited for low-volume, high-complexity parts
Tooling Cost	Moderate initial investment	Higher tooling and setup costs
Material Yield	Higher – Less material waste in gating systems	Lower – More extensive runner systems required

Why Shell Molding Wins for Grate Bars

Grate bars require robust structural integrity, consistent dimensional accuracy, and cost-effective mass production — not the ultra-precision of investment casting. Shell molding delivers:

– Perfect balance of quality and affordability
– Scalable production for large orders
– Adequate precision for proper assembly and operation
– Significantly lower per-unit costs for your projects

Baoding Guokun can manufacture and export large amount of moving grate bars for industrial boilers and waste to energy plants. Our grate bars are designed to maximize airflow while maintaining mechanical strength and shape in high temperature environments.

China moving grate bars manufacturer

Our OEM Capabilities

Custom Manufacturing Services
Full OEM/ODM Support: Produce to your drawings, samples, or specifications
Material Flexibility: 1.4823, 1.4777, ZG4Cr25Ni20Si2, and custom heat-resistant alloys
Size Range: 0.1kg to 3500kg per piece with various profiles and configurations
Complete Finishing: Shot blasting, riser removal, CNC machining, straightness correction

Quality Assurance

– 100% Chemical analysis via spectrometer for each heat
– Liquid Penetrant Testing (PT) per ASTM E1417
– Full dimensional inspection and hardness testing
– ISO 9001:2015 certified manufacturing processes

Baoding Guokun can manufacture and export various moving grate bars, traveling grate bars, fixed grate bars, reciprocating step grates, slope grate bars, and all other boiler grate bars and incinerator grate block bars. Cast iron and heat resistant steel grate bars in DIN 1.4710, DIN 1.4729, DIN 1.4740, DIN 1.4743, DIN 1.4745, DIN 1.4776, DIN 1.4777, DIN 1.4823, DIN 1.4825, DIN 1.4826, DIN 1.4832, DIN 1.4849, DIN 1.4825, DIN 1.4849, DIN 1.4852, DIN 2.4778.

A High Quality China Foundry！

Guokun Casting, of Baoding Hebei is an ISO 9001-2008 registered iron and steel foundry & supplier of high quality carbon steel, cast iron and machined castings used in power, mining, railway, agricultural, tillage, truck, automobile, pump, valve, motor, pipe fittings and gear industry.

With a montly capacity of 10,000kgs and with more than 15 years of experience ensure the short delivery and the highest valued iron & steel casting parts.

The wooden box packaged with moving grate bars

Contact us today for competitive pricing on 1.4823 heat resistant steel grate bars manufactured via our optimized shell molding casting process — delivering premium quality at exceptional value.

Baoding Guokun Machinery Co., Ltd.

Baoding Guokun Export and Import Trading Co., Ltd

Office Add: 777# Chaoyang South Street, Baoding City, Hebei, 071000, China

Factory Address: Wangdu County, Baoding City, Hebei, 071000, China

Website: www.metalcastingfactory.com

Tel: 86-312-5951319 Fax: 86-312-5951296

Phone: 86-181 3278 9710 (WhatsApp & WeChat)

Email: gina@guokuncasting.com

gina.guokun@gmail.com