High Temperature Alloy Casting Material Tray for Heat Treatment Equipment Castings

How to choose a high-temperature alloy casting material pallet suitable for heat treatment equipment?

When choosing a high-temperature alloy casting material pallet suitable for heat treatment equipment, the following key factors need to be considered comprehensively:

1. High temperature resistance
High temperature alloy pallets need to remain stable at extreme temperatures, so the high temperature resistance of the material is crucial. For example:
Cr25Ni20 (310S): This high-chromium and high-nickel heat-resistant steel can withstand temperatures above 1200°C, has strong oxidation resistance, and is suitable for continuous furnaces and pit furnaces.
Cr28Ni48: High nickel content, excellent high temperature resistance and oxidation resistance, suitable for extreme high temperature processes.

2. Oxidation resistance and corrosion resistance of materials
During the heat treatment process, the material will be exposed to high temperature and oxidation environment, so it needs to have good oxidation resistance and corrosion resistance. For example, GX40CrNiSi35-25 material contains high concentrations of chromium, nickel, silicon and other elements, and has extremely high corrosion resistance and heat resistance.

3. Mechanical properties
The pallet needs to carry the workpiece and withstand repeated heating and cooling processes, so the strength and toughness of the material are very important. For example:
ZG40Cr25Ni20: This material has good casting performance, can manufacture complex-shaped pallets, and has low cost, suitable for heat treatment processes with medium temperatures and loads.
Cr20Ni80: Suitable for very harsh high-temperature environments, but the cost is higher.

4. Processing and manufacturing process
The manufacturing process of the pallet will also affect its performance and cost. Common processes include centrifugal casting, precision casting, mold casting, etc. For example, lost wax process and EPC process can be used to manufacture high-temperature material pallet fixtures, which can improve the accuracy and quality of the pallet.

5. Cost and cost performance
When selecting materials, it is necessary to balance performance and cost. For example:
Cr25Ni20 (310S) and ZG40Cr25Ni20 are cost-effective options and are suitable for ordinary heat treatment processes.
Cr28Ni48 and Cr20Ni80 are suitable for high-end precision processes, but the cost is higher.

6. Service life
The durability of the material directly affects the service life of the pallet. The ideal material should have good thermal fatigue resistance and be able to remain stable during repeated heating and cooling.

7. Convenience of processing and use
The design of the pallet should facilitate lifting and heating and cooling of the workpiece, and should minimize deformation. For example, 1Cr18Ni9Ti material is an ideal heat treatment tooling material because it does not undergo phase change when cooled to room temperature after heating, and its crystal structure remains unchanged.