Continuous Furnace Heat Treatment Fixtures, Trays, Grids, Belts For Sintering, Annealing, Hardening Lines

Continuous Furnace Heat Treatment Fixtures & Toolings

I. Continuous Furnace Fixtures

Continuous furnace fixtures are specialized carrying and conveying devices designed for continuous heat treatment production lines, such as mesh belt furnaces, cast link belt furnaces, roller hearth furnaces, pusher furnaces, and rotary hearth furnaces. Their defining characteristic is that they integrate with the furnace, moving continuously or stepwise during production, enabling complete automation of the heat treatment process.

Unlike batch furnace fixtures (e.g., for multi-purpose furnaces), continuous furnace fixtures serve as the production line's "conveyor belt" and "mobile workstation." Their design must be perfectly matched to the furnace type, heating/cooling methods, and drive mechanisms.

II. Main Continuous Furnace Types and Their Corresponding Fixtures
1. Mesh Belt Furnace
01. Integrated Fixture-Conveyor: The mesh belt itself is the core fixture.

02. Material: Typically woven or stamped from high-strength, heat-resistant steel wire like AISI 314, 330.

03. Design Key Points:

• Permeability: Mesh size must ensure atmosphere flow and quenchant penetration while preventing small parts from falling through.
• Anti-Sag and Anti-Tracking: Must remain flat under high-temperature loads, with edge designs to prevent misalignment.
• Flexibility and Strength: Must bend over drive wheels while supporting loads within the furnace.

04. Applications: High-volume quenching, carburizing, tempering of small standard parts, bearing components, fasteners, etc.

2. Cast Link Belt Furnace
01. Fixture: Composed of countless heat-resistant steel cast links connected in series, forming a sturdy "track."

02. Features: Extremely high load capacity, far greater than mesh belts. Suitable for heavier parts like automotive components, connecting rods, tools.

03. Design Key Points: Link design must ensure flexible connection, good ventilation, and high strength. A heavy-duty option alongside pusher furnaces.

3. Pusher Furnace
01. Fixture System: A precision system consisting of trays (or boats) and rails.

02. Trays: Carry workpieces, pushed forward step-by-step on the rails by hydraulic or mechanical pushers.

03. Rails: Support the trays and guide their movement inside the furnace.

04. Design Core - "Tray/Rail System":

• Materials: Trays commonly use AISI 330, 310; rails use RA330, RA253MA, or centrifugally cast tubes.
• Friction Pair Design: This is critical! The contact surfaces between tray feet and rails must be wear-resistant and anti-galling. Often uses different material pairings (e.g., higher-grade alloy for tray feet), special coatings, or designs with rollers/sliders to reduce friction.
• Stability: Tray length-to-width ratio must be reasonable to prevent "jamming" or "tipping" during pushing.

05. Applications: Carburizing, quenching, annealing of high-value, high-volume products like gears, bearing rings, large forgings.

4. Roller Hearth Furnace
01. Fixture: Workpieces are usually placed directly on rotating rollers or on skid plates driven by the rollers.

02. Rollers: Themselves are rotating shafts made of heat-resistant steel, serving as both the conveyance mechanism.

03. Skid Plates: Used to protect rollers or carry special workpieces.

04. Advantages: Workpiece is stationary relative to the "fixture," with no friction. Ideal for parts requiring high surface finish or prone to scratching (e.g., stainless steel sheets, silicon steel sheets, precision parts).

05. Design Key Points: Roller straightness, synchronization, and resistance to bending at high temperatures are crucial.

5. Rotary Hearth Furnace
01. Fixture: The furnace hearth itself is a large rotating platform. Workpieces are typically placed directly on the hearth or use simple positioning blocks/supports.

02. Advantages: Very flexible for processing large single pieces or mixed batches with varying process cycles.

03. Design Key Points: Hearth sealing is critical. Fixture design is relatively simple but must consider positioning stability under hearth thermal distortion.

III. Summary

Continuous furnace fixtures are the flowing foundation of the process. They are no longer static auxiliary tools but an integrated embodiment of production line dynamics, thermodynamics, and materials science. Their design must start from a "system compatibility" perspective, comprehensively considering:

• Furnace Type determines the basic form of the fixture (mesh belt, tray, roller).
• Process determines the fixture's material and structure (temperature, atmosphere, cooling method).
• Production Volume determines the fixture's load capacity and durability requirements.

Successful continuous furnace fixtures must operate reliably, at a high pace, and for extended periods under harsh conditions. They are the lifeline ensuring the continuity, cost-effectiveness, and quality consistency of large-scale, automated heat treatment production. Investing in and maintaining this "lifeline" is a core task in modern heat treatment manufacturing.

Material Grade Table:

FAQ:

Q: How to give inquiry ?

A: Step 1, please give us some details about your furnace,operating temperature,cooling method,loading weight of your furnace and so on;

Step 2, it's better to provide 3D drawings;

Step 3, when we have enough details, we may design the products drawings and quote accordingly;

Q: When can I get the price?

A: We usually quote within 24 hours after we get your inquiry(Except weekend and holidays). If you are very urgent to get the price, please email us or contact us in other ways so that we can offer you a quote.

Q: When will make delivery ? /What is the delivery Time?

A: -Sample Order: 35 days after receipt of the full payment.

-Stock Order: 10 days after receipt of the full payment

-OEM Order: 30 days after receipt of the deposit.

Q: What's your after-sales service?

A: 1 year warranty for all kinds of products;

If you find any defective accessories first time, we will give you the new parts for free to replace in the next order, as an experienced manufacturer, you can rest assured of the quality and after-sales service.

Q: What's your payment condition?

A: T/T

Payment<=USD10000, 100% in advance. Payment>USD10000, 50% T/T in advance ,balance before shipment.

Q: What is the shipping method?

A: Transported by DHL, UPS, EMS, Fedex,Air freight, sea freight or train freight.