FH® 1.4849 Heat Treatment Fixtures for Pit/ Well-Type Furnace

FH® Pit/ Well-Type Furnace Fixtures

Key Benefits

• Complete System Solution
  Base tray + stacking baskets + support posts / grids – designed as an integrated system for stable stacking and optimal gas flow.
• Heavy-Load Bearing
  Reinforced rib structures and support feet distribute weight evenly – supports tall stacks of parts or multiple baskets without center sagging.
• Gas Circulation Optimized
  Raised feet on base tray + open grid patterns + support post spacing allow hot gas to flow around all surfaces – uniform heating from bottom to top.
• Anti-Carburization / Anti-Nitriding
  High-silicon alloys resist carbon and nitrogen penetration – extends service life in aggressive atmospheres.
• Custom Configuration
  Circular or rectangular – precisely matched to your furnace internal dimensions. Segmented options for large diameters.

System Components

Technical Specifications

Why Choose FH® Pit/ Well-type Furnace Fixtures?
1. Designed for Pit/ Well-type Furnace Challenges

2. Design Features That Matter

3. Clean Operation

• Pre-oxidized or shot-blasted surface reduces initial scaling
• Smooth weld finishes prevent part damage and scale adhesion
• Parts come out cleaner – reduces post-treatment cleaning

Applications

1. Well-type / pit carburizing furnaces
2. Well-type carbonitriding furnaces
3. Well-type annealing furnaces
4. Well-type hardening furnaces
5. Well-type tempering furnaces (medium-high temperature)
6. Well-type gas nitriding furnaces
7. Parts: large gears, shafts, rings, dies, tooling, heavy castings, long tubes

Genuine Photos of FH® Heat Treatment Fixtures

Material Grade Table

Ordering Process

• Provide furnace internal diameter (or length × width) and usable depth
• Share part dimensions, batch weight, and operating temperature
• Specify atmosphere (carburizing, nitriding, annealing, etc.)
• FH® proposes complete system design + 3D layout
• Confirm component quantities (base tray + number of baskets + supports)
• Delivery includes: MTC, inspection reports, stacking diagram, care guide

FAQ:

Q1: What does a complete FH® well-type furnace fixture system include?
A: A standard system includes: base tray (with raised feet), stacking baskets (quantity based on furnace depth), support posts/grids (for additional layers), and top grid. All components are designed to work together.

Q2: How many baskets can I stack in my well-type furnace?
A: It depends on furnace depth and part height. FH® calculates this for you. Example: Furnace depth = 2000 mm, base tray height = 150 mm, clearance = 100 mm → usable height = 1750 mm. If each basket is 250 mm tall, you can stack 7 baskets.

Q3: How do I clean and maintain the fixtures?
A: Every 80–120 cycles, remove fixtures and lightly bead blast (glass beads, ≤0.3 MPa). Check base tray flatness – if sag exceeds 5 mm per 1000 mm, consider replacement. Do not hammer or heat-straighten. Avoid carbon steel brushes.

Q4: Can these fixtures be used in a well-type gas nitriding furnace?
A: Yes. For gas nitriding (500–580°C), 310S is usually sufficient. If you run both carburizing and nitriding in the same furnace, 1.4849 is more versatile. All fixtures will develop a surface nitride layer – clean every 50–80 cycles.

Q5: Do you offer spare parts or repair services?
A: Yes. We stock common components. For damaged baskets, we offer weld repair (if localized) or replacement. Base trays are typically replaced rather than repaired. Contact us with photos for a repair assessment.

Q6: What is your warranty?
A: 12 months against manufacturing defects (weld cracks, casting flaws, material defects). Normal creep, surface carburization/nitriding, and gradual sagging are considered normal wear – not covered. Every component comes with MTC and inspection report.