What This Part Is And Why It Is Made This Way
Because grate bars are consumed continuously, the real requirement is not one good batch but a predictable stream of identical batches at a stable price. Volume production is a supply chain question more than a casting question.
Bars are produced in repeat batches on a stable production base, with melt analysis and body sampling applied to each production run.
What You Get From This Route
Repeat production stays with the same qualified partner, so wear life is predictable.
Per melt analysis makes batch to batch comparison possible.
Batch planning matched to the plant's overhaul schedule.
Application Scenarios
- Annual grate bar supply contracts
- Stocked spares for continuous plants
- Multi site maintenance programmes
- OEM spare part programmes
Who It Is For
- Plants running annual consumable budgets
- OEM spare parts departments
- Distributors supplying waste to energy operators
Technical Features
- Repeat batch production on a stable base
- Melt analysis on every production run
- Heat resistant alloy grades to specification
- Delivery planned against overhaul schedules
What Buyers Run Into Without This Specification
- Wear life varies between deliveries and budgeting becomes guesswork.
- A cheaper supplier is used for one order and the grate fails early.
- Deliveries do not line up with planned shutdowns.
Published Material Weight And Process Data
Figures below are the published capability for high alloy parts. Part specific values — tolerance on individual features, finish, packing — are confirmed at drawing review and marked TBC until then.
| Food Machinery Material | 1.4308 / 1.4309 / 1.4340 |
|---|---|
| Food Machinery Weight | 9 kg - 800 kg |
| Grate Bar Material | 1.4777 / 1.4776 / 1.4823 / 1.4743 / LH26 / EN-GJL-200 + 3%Cr |
| Grate Bar Weight | Typical products 2 kg - 50 kg; some grate bars and liners around 10 kg - 50 kg |
| Biomass Material | 1.4777 / 1.4776 / 1.4823 / 1.4855 |
| Working Temperature | Typical maximum around 1050 °C - 1150 °C depending on material and duty |
| Process | Shell moulding, lost wax and lost foam casting, plus CNC machining |
| Tolerance | Shell moulding normally CT9-10; lost wax normally CT8; surface roughness about Ra 12.5 |
| Part Specific Tolerance | TBC — confirmed against the customer drawing |
| Minimum Order Quantity | TBC — depends on the process route selected |
| Lead Time | TBC — confirmed with the production base at quotation |
How The Part Is Made And Checked
- Inspection — Dimensions, flatness, assembly clearance, 3D scanning, RT, PT, hardness, chemical composition and tensile testing.
- Material Control — Chemical analysis on each melt, sampling from the product body and third party testing for special elements.
- Heat Treatment — Rotors are annealed to 20-35 HRC before machining, then quenched at about 1020 °C to 59-63 HRC.
Quality management is based on ISO 9001 and covers supplier management, raw material inspection, production process control and final inspection. Inspection results are archived and traceable.
Options And Alternatives
Parts are produced to the customer drawing rather than to a fixed catalogue item, so material grade, machining scope, surface treatment and packing are all specified per order. Machining, dimensional control, surface treatment and necessary pre-assembly can be added to the same supply route.
Where another process family would suit the part better — for example a forging in place of a casting for a shock loaded connector — that comparison is raised during drawing review rather than after tooling is committed.
How To Specify This Part
Share the annual consumption and the shutdown calendar at the quotation stage. Planning production against the shutdown dates usually saves more than negotiating the unit price, because it removes emergency air freight from the budget.
- Send the drawing with material, quantity, quality standard and target delivery date.
- State the inspection class and the zones it applies to, rather than a general note.
- Confirm the packing requirement and the lifting equipment available at the destination.
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View specificationsVolume Grate Bar Production — Frequently Asked Questions
Can you support annual supply contracts?
Annual quantities and call off patterns are handled as part of the project terms. Please state the expected annual consumption on the enquiry.
How do you keep quality consistent across batches?
The part stays with the same qualified production partner, chemical analysis is carried out on each melt and inspection results are archived for comparison.
What do you need to prepare a quotation?
Drawings, material, quantity, quality standard and target delivery date.
Which inspection is included?
The inspection scope is agreed during drawing review. Rotors are annealed to 20-35 HRC before machining, then quenched at about 1020 °C to 59-63 HRC.
Get A Quotation For Volume Grate Bar Production
Send the drawing and the application. We will confirm the process route, the production base and the inspection scope before quoting.