Effective case depth and hardness
State the target ECD, surface/core hardness, tolerance, test method and drawing or standard that governs acceptance.
Low-pressure carburizing · gas or oil quenching
Vacuum Carburizing Furnace
Configure the furnace around the alloy, effective case-depth target, load geometry, allowable distortion and production rate—then select high-pressure gas or double-chamber oil quenching to match the hardening duty.
01 · MaterialAlloy and incoming conditionSteel grade, prior treatment and hardenability.
02 · Case targetEffective depth and hardnessAcceptance method, tolerance and sampling points.
03 · WorkloadGeometry, fixture and batch massEnvelope, density, holes, sections and critical surfaces.
04 · OutcomeDistortion and production limitCritical dimensions, throughput and downstream operations.
Application engineering
Configure the Furnace Around Your Target Part Quality
SYNHTE connects the case-depth target, workload, dimensional limits and production rate with the chamber, heating system and quench route.
Application-matched configuration: share your part and production data to receive a furnace configuration aligned with your working zone, load capacity, cooling demand and cycle objectives.
Uniformity across the actual load
Identify difficult features, representative sampling locations and the fixture pattern so recipe development reflects the real batch—not a single coupon.
Distortion and surface condition
Mark critical dimensions, permissible movement and downstream finishing. These limits influence fixture strategy, transfer and quench selection.
Production duty and utilities
Provide batch mass, usable envelope, annual or shift output, preferred gas or oil route, available gases, cooling water and plant power.
Quench-route decision
Match Cooling Severity to the Alloy, Section Size and Distortion Limit
Gas and oil quenching serve different production needs. SYNHTE matches the route to alloy hardenability, part geometry, load density, cleanliness goals and dimensional requirements.
Gas-Quench Route
A clean, programmable cooling route for suitable alloys and loads, especially where handling cleanliness and distortion control are important.
- Available series
- FZSC2-60 to FZSC2-220
- Production load range
- 150–1000 kg
- Pressure options
- 6 / 10 / 12 / 16 bar
- Process validation
- Cooling response, hardness, case profile and distortion trial
Double-Chamber Oil-Quench Route
A separate oil-quench chamber for steels, sections or larger workloads that require a more severe cooling route.
- Available series
- FZSC2-60 to FZSC2-300
- Production load range
- 150–5000 kg
- Architecture
- Heating chamber, transfer and dedicated oil-quench chamber
- Process validation
- Hardness response, oil parameters, transfer and distortion trial
A complete part profile produces a better quench selection.
SYNHTE evaluates alloy hardenability, maximum section, load arrangement, fixture shadowing, dimensional tolerance and metallurgical targets together, then includes representative trial criteria in the project quality plan.
Case-profile control
Build the Recipe Around the Required Carbon Profile and the Real Workload
Effective case depth is the result of a coordinated material, boost–diffusion, loading and quench strategy. The furnace supplies the controlled environment; the acceptance method proves the outcome.
Lock the material and acceptance definition
Confirm steel grade, initial condition, ECD definition, hardness threshold, surface-carbon objective and required test standard.
Map the workload and carbon-access risks
Review blind holes, splines, slots, dense packing, section changes, fixtures and representative test-piece positions.
Develop boost and diffusion stages
Coordinate temperature, low-pressure gas dosing and diffusion stages around the target profile. Cycle values remain recipe-specific.
Pair the recipe with quench response
Evaluate transfer, cooling pressure or oil parameters, fixture support and tempering boundary against hardness and distortion requirements.
Verify the production load
Use agreed sampling points, hardness traverse and—where required—metallography and dimensional inspection to qualify the result.
Furnace performance
FZSC2 Vacuum Carburizing Platform Capabilities
The FZSC2 platform combines high-temperature capability, controlled low-pressure carburizing, vacuum performance and automatic recipe control in a scalable production system.
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| Parameter | FZSC2 capability | Application value |
|---|---|---|
| Maximum operating temperature | Up to 1320 °C | Supports elevated-temperature LPC and integrated heat-treatment cycles. |
| Temperature uniformity | ±5 °C | Promotes consistent thermal conditions throughout the useful working zone. |
| Ultimate vacuum option | ≤4 × 10−3 Pa | Supports clean low-pressure processing and controlled surface quality. |
| Pressure-rise rate | <0.67 Pa/h | Supports chamber integrity and stable process conditions. |
| Low-pressure carburizing range | 300–2000 Pa | Enables programmed enrichment and diffusion stages for the required case profile. |
| Control modes | Automatic / manual | Combines production recipe automation with flexible setup and maintenance access. |
SYNHTE integrates these capabilities with the selected working zone, workload and quench system for a complete production solution.
FZSC2 Model Range
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| Model | Quench route | Working chamber | Loading capacity | Heating power |
|---|---|---|---|---|
| FZSC2-60 | Gas or oil | 600 × 400 × 400 mm | 150 kg | 60 kW |
| FZSC2-80 | Gas or oil | 750 × 500 × 500 mm | 300 kg | 80 kW |
| FZSC2-120 | Gas or oil | 900 × 600 × 600 mm | 500 kg | 120 kW |
| FZSC2-220 | Gas or oil | 1200 × 800 × 800 mm | 1000 kg | 220 kW |
| FZSC2-300 | Oil-quench route | 1500 × 1500 × 800 mm | 5000 kg | 300 kW |
Five platform sizes cover production loads from 150 to 5000 kg. SYNHTE matches chamber size and quench configuration to the submitted part and batch profile.
Representative applications
Designed for Complex Features and Demanding Production Loads
The process can be configured for deep holes, splines, dense gear loads and critical dimensions. Representative drawings help the engineering team optimize carbon access, loading and cooling strategy.
FAT / SAT planning
Build Quality Verification Into the Project
The project quality plan connects equipment tests, representative workload trials, process records and commissioning support from FAT through SAT.
Part-result criteria
Alloy, ECD, hardness, profile, distortion points, surface condition, sample locations and governing method.
Equipment tests
Useful-zone uniformity, vacuum and pressure-rise test, quench configuration, controls, alarms and safety checks.
Representative workload
Agreed fixtures and samples, recipe record, hardness traverse, metallography where required and dimensional results.
Installation and commissioning
Utilities, consumables, documentation, training, installation interfaces, SAT activities and project sign-off.
Engineering RFQ
Share Your Process Requirements for a Matched Configuration
Your part data turns the model range into a production-ready proposal. With drawings and quality targets, SYNHTE can match the useful zone, load support, recipe development, quench route, instrumentation and validation plan.
01
MaterialSteel grade, incoming condition and prior treatment.
02
Part drawingsEnvelope, maximum section and critical dimensions.
03
Case requirementECD, hardness, tolerance, profile and test method.
04
Batch definitionFixture, load pattern, batch mass and annual output.
05
Quality limitsAllowable distortion, surface condition and sampling.
06
Plant interfacesGas/oil preference, utilities, standard and FAT/SAT location.
Technical questions
Vacuum Carburizing Furnace FAQ
How is effective case depth controlled and verified?
It is developed through the steel grade, carburizing temperature, gas dosing, boost and diffusion stages, workload arrangement and quench response. Verification normally uses the agreed hardness traverse and, where required, metallographic examination.
How should we choose gas or oil quenching?
SYNHTE compares alloy hardenability, maximum section, load density, cleanliness, cooling response and allowable distortion, then validates the selected route with representative parts or samples.
What data is needed for a useful furnace proposal?
Provide material, drawings, target ECD and hardness, test method, critical dimensions, batch envelope and mass, throughput, preferred quench route, utilities and acceptance standard.
What do FAT and SAT cover?
The project quality plan combines furnace capability checks with process qualification, including test methods, instruments, sample loads, inspection locations and acceptance criteria.
Review Your Case-Depth, Quench and Acceptance Requirements With SYNHTE
Send the part drawing, alloy, target profile, batch definition and dimensional limits. The engineering discussion can then focus on a relevant furnace configuration instead of a generic model list.