Heat Treatment Fixtures (Heat Treatment Fixtures & Toolings)
I. Primary Functions & Roles
1. Positioning & Securing: Prevents workpiece movement or tipping
inside the furnace, ensuring uniform heating and cooling.
2. Reducing Distortion: Counteracts distortion caused by workpiece
weight or stress at high temperatures through rational support
structure design.
3. Improving Consistency: Enables batch processing of workpieces
under identical conditions, reducing quality variation.
4. Enhancing Efficiency: Facilitates loading/unloading, transfer,
and compatibility with automated production lines.
5. Meeting Special Process Requirements: Such as localized
hardening protection, atmosphere guidance, or directional quenching
cooling.
II. Primary Functions & Roles
1. Positioning & Securing: Prevents workpiece movement or tipping
inside the furnace, ensuring uniform heating and cooling.
2. Reducing Distortion: Counteracts distortion caused by workpiece
weight or stress at high temperatures through rational support
structure design.
3. Improving Consistency: Enables batch processing of workpieces
under identical conditions, reducing quality variation.
4. Enhancing Efficiency: Facilitates loading/unloading, transfer,
and compatibility with automated production lines.
5. Meeting Special Process Requirements: Such as localized
hardening protection, atmosphere guidance, or directional quenching
cooling.
III. Key Design Considerations
1. Heat-Resistant Material Selection
01. Common materials: Heat-resistant steels (e.g., 310S, 253MA),
nickel-based alloys (e.g., Inconel 600), silicon carbide ceramics.
02. Factors: High-temperature strength, oxidation resistance,
thermal fatigue resistance, and cost.
2. Thermal Expansion Matching: The coefficients of thermal
expansion (CTE) of the fixture and workpiece should be coordinated
to avoid jamming or distortion.
3. Lightweight Structure: Reduce thermal mass while ensuring
strength, saving energy and speeding up heat transfer.
4. Durability & Maintainability: Design for easy descaling (oxide
removal) and replacement of wear parts.
IV. Typical Application Scenarios
1. Annealing/Normalizing: Using baskets or stacking racks to
prevent workpiece sticking.
2. Quenching: Employing dedicated jigs to control distortion, e.g.,
gear press quenching dies.
3. Carburizing/Nitriding: Hanger design must ensure atmosphere
circulation to avoid soft spots.
4. Vacuum Heat Treatment: Selecting low-volatility materials to
avoid furnace contamination.
Heat treatment fixtures are the critical (carrier) linking process
design to actual production. Their design level directly impacts
heat treatment quality, cost, and efficiency. Rational selection
and innovative design are of great significance for advancing heat
treatment technology.
Material Grade Table:
| Heat-resistant Steel |
| / | GB | DIN | ASTM | JIS | Chemical Composition (%) | Maximum Operation Temperature |
| C | Si | Mn | Cr | Ni | Nb/Cb | Mo | Other |
| 1 | ZG40Cr27Ni4 | 1.4823 | HD | SCH11 | 0.30 - 0.50 | ≤2.00 | ≤1.00 | 24.00 - 28.00 | 4.00 - 6.00 | - | ≤0.50 | - | 1050℃ |
| 2 | ZG40Cr22Ni10 | 1.4826 | HF | SCH12 | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 19.00 - 23.00 | 8.00 - 12.00 | - | ≤0.50 | - | 950℃ |
| 3 | ZG30Cr28Ni10 | - | HE | SCH17 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 26.00 - 30.00 | 8.00 - 11.00 | - | - | - | 1050℃ |
| 4 | ZG40Cr25Ni12 | 1.4837 | HH | SCH13 | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 24.00 - 27.00 | 11.00 - 14.00 | - | ≤0.50 | - | 1050℃ |
| 5 | ZG30Cr28Ni16 | - | HI | SCH18 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 26.00 - 30.00 | 14.00 - 18.00 | - | - | - | 1100℃ |
| 6 | ZG40Cr25Ni20Si2 | 1.4848 | HK | SCH21 | 0.30 - 0.50 | ≤1.75 | ≤1.50 | 23.00 - 27.00 | 19.00 - 22.00 | - | ≤0.50 | - | 1100℃ |
| 7 | ZG30Cr20Ni25 | - | HN | SCH19 | 0.20 - 0.50 | ≤2.00 | ≤2.00 | 19.00 - 23.00 | 23.00 - 27.00 | - | - | - | 1100℃ |
| 8 | ZG40Cr19Ni39 | 1.4865 | HU | SCH20 | 0.35 - 0.75 | ≤2.50 | ≤2.00 | 17.00 - 21.00 | 37.00 - 41.00 | - | - | - | 1020℃ |
| 9 | ZG40Cr15Ni35 | 1.4806 | HT | SCH15 | 0.35 - 0.70 | ≤2.00 | ≤2.00 | 15.00 - 19.00 | 33.00 - 37.00 | - | ≤0.50 | - | 1000℃ |
| 10 | ZG40Cr25Ni35Nb | 1.4852 | HPCb | SCH24Nb | 0.30 - 0.50 | ≤2.00 | ≤2.00 | 24.00 - 28.00 | 33.00 - 37.00 | 0.80 - 1.80 | ≤0.50 | - | 1100℃ |
| 11 | ZG40Cr19Ni39Nb | 1.4849 | - | - | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 18.00 - 21.00 | 36.00 - 39.00 | 1.20- 1.80 | ≤0.50 | - | 1100℃ |
| 12 | ZG40Cr24Ni24Nb | 1.4855 | - | - | 0.30 - 0.50 | 1.00 - 2.50 | ≤2.00 | 23.00 - 25.00 | 23.00 - 25.00 | 0.80 - 1.80 | ≤0.50 | - | 1050℃ |
| 13 | ZG40Cr25Ni35 | 1.4857 | HP | SCH24 | 0.35 - 0.50 | 1.00 - 2.50 | ≤2.00 | 24.00 - 28.00 | 33.00 - 37.00 | - | ≤0.50 | - | 1100℃ |
| 14 | ZG1Cr20Ni32Nb | 1.4859 | - | - | 0.06 - 0.15 | 0.50 - 1.50 | ≤2.00 | 19.00 - 21.00 | 31.00 - 33.00 | 0.50 - 1.50 | ≤0.50 | - | 1050℃ |
| 15 | ZG45Cr12Ni60 | - | HW | - | 0.35 - 0.75 | ≤2.00 | ≤2.00 | 10.00 - 14.00 | 58.00 - 62.00 | - | - | - | 1100℃ |
| 16 | ZG45Cr18Ni66 | - | HX | - | 0.35 - 0.75 | ≤2.00 | ≤2.00 | 15.00 - 19.00 | 64.00 - 68.00 | - | - | - | 1100℃ |
| 17 | ZG1Cr28Co50 | 2.4778 | - | - | 0.05 - 0.25 | 0.50 - 1.00 | ≤1.50 | 27.00 - 30.00 | ≤1.00 | ≤0.50 | ≤0.50 | Co:48.0 - 52.0 | 1200℃ |
| 18 | ZG30Cr28Co50Nb | 2.4779 | - | - | 0.25 - 0.35 | 0.50 - 1.50 | 0.50 - 1.50 | 27.00 - 29.00 | - | 1.50 - 2.50 | ≤0.50 | Co:48.0 - 52.0 | 1200℃ |
| 19 | ZG40Cr28Ni48W5 | 2.4879 | - | SCH42 | 0.35 - 0.55 | 1.00 - 2.00 | ≤1.50 | 27.00 - 30.00 | 47.00 - 50.00 | - | ≤0.50 | W:4.0 - 5.5 | 1200℃ |
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.
