Nickel based High-temperature Alloy Forgings
Typical products and materials：Superalloy materials for gas turbines, Inconel 718 forgings.
Inconel 718 Support Ring Chemical Composition:
Mechanical Properties of Inconel 718 Support Ring (ASME SB 637):
SMI manufactures heavy planetary carriers and large format transmission components to customer drawing and technical specification — covering planet carriers, ring gears, output flanges and gear shaft assemblies at weights and dimensions beyond the envelope of standard industrial reducer supply. The planet carrier shown below — Φ680 × 620mm, 810KG — is representative of the scale and precision machining capability SMI applies to heavy transmission component supply.
Every component in this category is produced to the customer’s own engineering drawing. Material grade, dimensional tolerances, heat treatment specification, surface finish and inspection requirements are all defined by the customer’s design — SMI’s role is to manufacture to that specification with the casting, forging and precision machining capability required to achieve it consistently.
The planet carrier is the most structurally demanding component in a planetary transmission system. It carries the full output torque of the reducer, supports the planet gear bearing loads on all pin positions simultaneously, and must maintain precise dimensional relationships between pin bores across its full service life under cyclic loading.
At Φ680 × 620mm and 810KG, the component shown represents a transmission system capable of handling several thousand kilowatts of input power — consistent with the drive system requirements of energy drilling equipment, large ball mills, tunnel boring machine cutter head drives and heavy marine lifting machinery. Key manufacturing requirements for a component at this scale include:
Cast steel planet carriers from small industrial sizes up to 810KG and above — machined to customer drawing for single-stage and multi-stage planetary systems. Hub bore, pin bore positions, flange face and bolt circle all machined to drawing tolerance. CMM dimensional verification as standard on large format components.
Large format internal ring gears — cast or forged blanks, internal gear cut to specified module, tooth profile accuracy grade and face width. Heat treatment to specified surface hardness. Ring gear housing bore and mounting features machined to assembly drawing. Available in through-hardened and case-hardened configurations to customer specification.
Heavy output flanges and carrier flanges — precision machined bolt circle, mating face flatness and bore dimensions to assembly drawing tolerances. Flange face machining to the surface finish specified for the sealing or mating interface requirements of the customer’s application.
Planet gear shaft assemblies — external gear cutting to specified module and accuracy grade, shaft journal machining to bearing fit dimensions, spline features to customer profile specification. Heat treatment and surface finish to drawing. Available as individual components or as matched sets for a complete planet gear stage.
Sun gear and input shaft assemblies — external gear cutting, journal machining and spline or coupling features to customer drawing. Case hardening or nitriding to specified surface hardness and case depth. Balanced to customer requirement for high-speed input shaft applications.
Heavy planetary transmission components for the drive systems of energy drilling and production equipment — including drawworks transmission systems, mud pump drives and rotary table drives for oil and gas drilling applications. These applications demand high torque density, resistance to shock loading and consistent dimensional accuracy across the full component set to ensure reliable operation under the demanding conditions of drilling service.
Large format planet carriers, ring gears and output flanges for ball mill drives, SAG mill drives, crusher drives and mine hoist transmission systems. Mill drive planetary systems operate continuously under high torque and are subject to the cyclic shock loads generated by the grinding charge — requiring casting integrity and dimensional accuracy that SMI’s heavy component manufacturing capability is designed to deliver.
Heavy planetary transmission components for cutter head drive systems and large crawler crane travel drives. Cutter head planetary systems operate under extreme and variable load conditions — requiring robust casting design, controlled heat treatment and precise pin bore geometry to maintain load sharing across all planet positions throughout the service life of the drive.
Planet carriers and ring gears for ship deck machinery, heavy lift crane slewing and hoisting drives, and offshore winch transmission systems. Marine applications require material certification to classification society standards — available on request from SMI.
| Operation | Capability |
|---|---|
| Casting | Cast steel planet carriers and housings — weight from small industrial to 810KG and above |
| Forging | Forged blanks for ring gears, sun gears and shaft components where mechanical property requirements exceed cast steel capability |
| Turning and boring | Large format CNC turning and boring — hub bores, flange faces and journal diameters to drawing tolerance |
| Gear cutting | Internal and external gear cutting — module, tooth profile and accuracy grade to customer specification |
| Pin bore machining | Positional accuracy to customer drawing — CMM verification on large format planet carriers |
| Heat treatment | Through hardening, case hardening and nitriding to specified surface hardness and case depth |
| Inspection | CMM dimensional inspection, hardness verification, material certification — standard on heavy components |
تقوم SMI بتصنيع ناقلات الكواكب الثقيلة ومكونات نقل الحركة كبيرة الحجم وفقاً لرسومات العملاء والمواصفات التقنية — تشمل ناقلات الكواكب، التروس الحلقية الداخلية، الشفاه الإخراجية، ومجموعات أعمدة التروس الكوكبية بأوزان وأبعاد تتجاوز النطاق المعياري. ناقل الكواكب الممثل: Φ680 × 620مم، 810 كجم. قطاعات التطبيق: معدات الحفر، مطاحن التعدين، آلات حفر الأنفاق، والرافعات البحرية الثقيلة. للاستفسار، تواصل مع فريق SMI →
SMI fabrica portasatélites pesados y componentes de transmisión de gran formato según los planos y especificaciones técnicas del cliente — incluyendo portasatélites, coronas internas, bridas de salida y conjuntos de ejes de engranajes planetarios con pesos y dimensiones que superan el rango estándar. Portasatélite representativo: Φ680 × 620mm, 810KG. Sectores de aplicación: equipos de perforación energética, molinos de minería, maquinaria de tunelización y sistemas de elevación marina pesada. Para consultas, contacte al equipo de SMI →
SMI fertigt schwere Planetenträger und Großformat-Getriebekomponenten nach Kundenzeichnung und technischer Spezifikation — einschließlich Planetenträger, Hohlräder, Ausgangsflansche und Planetenradwellenbaugruppen mit Gewichten und Abmessungen jenseits des Standardbereichs. Repräsentativer Planetenträger: Φ680 × 620mm, 810KG. Anwendungsbereiche: Energiebohrausrüstung, Bergbaumulühlen, Tunnelbohrmaschinen und schwere Marinehubsysteme. Für Anfragen, kontaktieren Sie das SMI-Team →
To discuss heavy planetary carrier or large format transmission component requirements, please provide the following at enquiry stage:
SMI will respond with a written technical assessment and commercial proposal. Contact SMI — Heavy Transmission Component Enquiry →
Running crusher wear parts to complete failure is one of the most expensive maintenance habits in aggregate and mining operations. Yet it happens constantly — because wear is gradual, pressure to keep the plant running is constant, and the signs of imminent failure are easy to rationalise away.
Here are the five warning signs that indicate replacement is overdue.
If your crusher is processing fewer tonnes per hour than it was six months ago and nothing has changed in your feed material or feed rate, worn liners are the most likely cause.
As jaw plates, mantles, and concaves wear, the crushing chamber geometry changes. The effective nip angle decreases, material retention in the chamber increases, and throughput drops. Many operations attribute this to feed variability and never identify the actual cause.
What to do: Compare current throughput data against baseline performance from after the last liner change. A decline of more than 10–15% is a strong indicator that chamber geometry has deteriorated beyond the optimal range.
Worn crushing chamber geometry produces a coarser, less consistent product. If your downstream screens are seeing more oversize material — or if product samples are consistently running coarser than your target gradation — worn liners are a primary suspect.
This matters commercially: oversize product may not meet customer specifications, requiring recirculation through the circuit at additional energy cost.
A crusher working harder to achieve the same output draws more power. Worn liners increase the energy required per tonne of material crushed, as the machine compensates for lost geometry efficiency with increased mechanical effort.
Monitor your crusher’s amperage or kW draw against baseline. An increase of 8–12% or more, sustained over time rather than as a momentary spike from a large feed boulder, suggests the wear part is due for replacement.
Most modern jaw plates and cone crusher liners have wear indicator grooves or studs cast into the wear surface. When these disappear, the liner is at or near minimum safe thickness.
If your liners do not have built-in indicators, establish a measurement protocol — measure liner thickness at defined points during planned maintenance stops and record the data. Trend analysis allows you to predict replacement intervals rather than react to failures.
Never operate a liner below the manufacturer’s minimum thickness specification. At this point, the backing material begins to take wear loads it was not designed for, and fracture risk increases significantly.
Metallic clanging, irregular impact sounds, or a change in the crusher’s characteristic operating noise are warning signs that should never be ignored. These sounds can indicate:
Any of these conditions can escalate to catastrophic liner failure — including liner pieces entering the downstream circuit — within minutes of the first warning sound.
Stop the crusher and inspect immediately if you hear unexplained changes in operating noise.
The economics of planned replacement versus run-to-failure are consistently in favour of planned replacement:
Establishing a liner replacement schedule based on actual wear rate data — rather than calendar time or intuition — is the foundation of cost-effective crusher maintenance.
SMI supplies replacement wear parts for all major crusher OEM models, with standard and enhanced-specification materials available. Full product range at minecomponents.com. Contact our team for a technical consultation.
SMI multiple chamber sow molds allow multiple sows to be cast per pour — increasing throughput and reducing cycle time in high-volume primary casthouse and secondary remelting operations. Five standard configurations cover a capacity range from 0.11 m³ to 0.48 m³. All models are manufactured from SMI’s proprietary material formulation — optimised for rapid cooling and thermal shock resistance in continuous casthouse service. Custom chamber layouts and dimensions are available to customer specification.
| Model Number | Dimensions L×W×H (mm) | Weight (kg) | Capacity (m³) |
|---|---|---|---|
| SMI-HT-120030 | 2750 × 1030 × 250 | 1,477 | 0.23 |
| SMI-HT-130019B | 2708 × 890 × 270 | 1,248 | 0.22 |
| SMI-HT-140060B | 2038 × 550 × 275 | 776 | 0.11 |
| SMI-HT-120041 | 1650 × 1000 × 200 | 910 | 0.12 |
| SMI-HT-160028 | 1992 × 1300 × 400 | 1,705 | 0.48 |
All dimensions are in millimetres. Weights and capacities are nominal — actual values may vary depending on final design configuration. Custom chamber configurations and dimensions available on request.
Multiple chamber sow molds divide the casting volume into two or more separate chambers within a single mold body. Each chamber receives a separate pour of molten aluminium and produces an individual sow upon solidification — increasing the number of sows produced per handling cycle, reducing crane movements and improving casthouse floor utilisation. The chamber divider geometry and wall thickness are engineered to ensure consistent solidification across all chambers simultaneously, preventing differential shrinkage and maintaining consistent sow dimensions across the full production run.
All SMI multiple chamber sow molds are manufactured from SMI’s proprietary material formulation — developed over 30 years of continuous supply to aluminium casthouses worldwide. The formulation delivers rapid cooling rate and thermal shock resistance — the two performance requirements that determine service life in high-cycle casthouse environments. Alternative material options are available for specific operating conditions on request.
← Back to Dross Skim Pan and Sow Mold Overview | Contact SMI — Sow Mold Enquiry →
SMI single chamber sow molds are designed for casting aluminium sows from molten metal or recovered aluminium in primary casthouse and secondary remelting operations. Five standard configurations cover a capacity range from 0.077 m³ to 0.37 m³. All models are manufactured from SMI’s proprietary material formulation — optimised for rapid cooling rate and thermal shock resistance, extending service life in high-cycle casthouse environments. Custom dimensions are available to customer drawing or specification.
| Model Number | Dimensions L×W×H (mm) | Weight (kg) | Capacity (m³) |
|---|---|---|---|
| SMI-HT-130010B | 1220 × 1050 × 215 | 854 | 0.08 |
| SMI-HT-120036B | 1100 × 1100 × 225 | 838 | 0.077 |
| SMI-HT-170042 | 2186 × 1373 × 276 | 1,980 | 0.37 |
| SMI-HT-170082 | 1283 × 1060 × 255 | 1,032 | 0.13 |
| SMI-HT-190051 | 1697 × 1005 × 300 | 1,330 | 0.20 |
All dimensions are in millimetres. Weights and capacities are nominal — actual values may vary depending on final design configuration. Custom dimensions available on request.
The single chamber sow mold provides a single casting cavity for producing one aluminium sow per pour. The open-top design allows molten aluminium to be poured directly from a ladle or transfer crucible into the mold cavity, where it solidifies into a sow of consistent dimensions suitable for transport, storage and remelting. Wall geometry and base configuration are optimised for consistent solidification, easy sow release and stable stacking after casting.
All SMI single chamber sow molds are manufactured from SMI’s proprietary material formulation — developed over 30 years of continuous supply to aluminium casthouses worldwide. The formulation delivers rapid cooling rate and thermal shock resistance — the two performance requirements that determine service life in high-cycle casthouse environments. Alternative material options are available for specific operating conditions on request.
← Back to Dross Skim Pan and Sow Mold Overview | Contact SMI — Sow Mold Enquiry →
SMI multiple chamber dross skim pans provide separated collection zones within a single pan body — allowing dross fractions to be kept separate during skimming and collection, or accommodating specific casthouse process flow requirements. Six standard configurations cover a capacity range from 0.32 m³ to 1.05 m³. All models are manufactured from SMI’s proprietary material formulation — optimised for rapid cooling rate and thermal shock resistance in continuous casthouse service. Custom chamber layouts and dimensions are available to customer specification.
| Model Number | Dimensions L×W×H (mm) | Weight (kg) | Capacity (m³) |
|---|---|---|---|
| SMI-HT-120029 | 2844 × 1168 × 673 | 3,912 | 1.05 |
| SMI-HT-130019T | 2844 × 990 × 430 | 1,810 | 0.60 |
| SMI-HT-140060T | 2200 × 825 × 400 | 1,028 | 0.32 |
| SMI-HT-170041 | 2286 × 1473 × 533 | 2,820 | 0.90 |
| SMI-HT-190036 | 2150 × 1275 × 380 | 2,340 | 0.35 |
| SMI-HT-190093 | 2256 × 1016 × 508 | 2,019 | 0.50 |
All dimensions are in millimetres. Weights and capacities are nominal — actual values may vary depending on final design configuration. Custom chamber layouts and dimensions available on request.
SMI multiple chamber skim pans are available in two distinct divider configurations — selected according to the casthouse’s dross fraction separation requirements and process flow:
The three chamber low divider configuration incorporates two internal dividers at approximately one third to one half of the total cavity depth. The lower divider height allows a degree of controlled flow between chambers during filling and skimming — providing flexible dross collection across three zones within a single pan body. This configuration suits casthouses where broad dross fraction zoning is required without strict separation between chambers.
The dual chamber high divider configuration incorporates a single internal divider at approximately three quarters to four fifths of the total cavity depth. The higher divider provides more thorough separation between the two chambers — limiting cross-chamber flow and maintaining more distinct dross fraction separation throughout the skimming and collection cycle. This configuration suits casthouses where strict separation of different dross fractions or different furnace taps is required within a single pan handling operation.
Multiple chamber skim pans are used where casthouse process requirements call for separation of different dross fractions during skimming — or where the physical layout of the furnace and casthouse floor benefits from a longer pan geometry with internal dividers rather than multiple separate single chamber pans. The internal divider geometry is engineered to maintain structural integrity under repeated thermal cycling while providing effective zone separation between chambers throughout the service life of the pan.
The choice between three chamber low divider and dual chamber high divider configurations depends on the degree of separation required and the specific dross handling practice of the casthouse. SMI’s engineering team can advise on configuration selection based on the customer’s furnace type, dross volume and casthouse process requirements.
All SMI multiple chamber skim pans are manufactured from SMI’s proprietary material formulation — developed over 30 years of continuous supply to aluminium casthouses worldwide. The formulation delivers rapid cooling rate and thermal shock resistance — the two performance requirements that determine service life in high-cycle casthouse environments. Alternative material options are available for specific operating conditions on request.
← Back to Dross Skim Pan and Sow Mold Overview | Contact SMI — Skim Pan Enquiry →
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