Heat Treatment Jigs - Sand Casting-Blog list

Heat Treatment Jigs - Sand Casting

Advantages of Sand Casting

Sand casting offers high cost-performance and is suitable for relatively small production runs. It provides high design flexibility, allowing the creation of complex shapes. Various materials can be used, and with appropriate heat treatment, optimal performance can be achieved. Using sand casting products allows for efficient production while minimizing initial investment costs.

Sand Casting Manufacturing Process

The manufacturing process of sand casting includes the following steps:

No	Process	Description
1	Pattern Making	Create models using wood or resin.
2	Mold Making	Create sand molds using the models. The mold consists of two halves.
3	Molding Preparation	Combine the sand molds and prepare for casting.
4	Casting	Pour molten metal into the sand mold.
5	Cooling	Cool and solidify the poured metal.
6	Mold Breaking	Break the sand mold to extract the casting.
7	Finishing	Remove excess material from the casting and finish it.

Comparison of Materials Used in Sand Casting

Comparison between materials used in sand casting and stainless steel welded jigs:

Item	Stainless Steel Welded Jig	Sand Casting Jig
Base Material	SUS304, 310S, etc.	SCH13/HH, SCH21/HK30, SCH22/HK40, etc.
Structure	Mixed base material, weld metal, heat-affected zone	Uniform
High-Temperature Cracking	Prone to cracking at welds	Less prone to cracking if no casting defects
Design Flexibility	Limited design freedom compared to casting	High design flexibility with sand casting
Wood/Metal Mold	Not required	Required

Heat Treatment Furnaces Using Sand Casting Products

Sand casting products are used in various heat treatment furnaces, such as:

Tray Pusher Furnace: Transports products using a pusher mechanism. Suitable for continuous heat treatment and mass production.
Roller Hearth Furnace: Transports products on rollers inside the furnace. Suitable for continuous heat treatment and mass production.
Batch Furnace: Involves batch processing with horizontal furnaces, suitable for flexible manufacturing of small lots with multiple varieties.
Pit Furnace: Vertical furnace suitable for deep heat treatment, also flexible for small lot production with multiple varieties.

Comparison of Sand-Casting Technology with Other Technologies

Sand casting technology is relatively simple for mold creation, making it flexible for small-lot production of various types. Especially for large trays, sand casting can be a cost-effective method. By selecting heat-resistant materials, it is possible to design and manufacture suitable trays for heat treatment processes.

Item	Sand Casting Technology	Lost Wax Precision Casting Technology	Welding and Fabrication Technology
Large Trays	◎	△	〇
General Trays	〇	〇	〇
Baskets	×	〇	〇
Grids	×	〇	〇

Consultation on Sand Casting

For consultations regarding sand casting, please contact TWC. We offer optimal solutions leveraging our extensive experience and expertise. Feel free to reach out with any questions or for quotations.