Investment Casting About Lost Wax Casting 2.0

Lost wax casting is now called investment casting. It is an investment casting process with little or no cutting. It is not only suitable for precision casting of various types and alloys, but also can produce castings with higher dimensional accuracy and surface quality than other precision casting methods. We use yellow low-temperature wax and green medium-temperature wax to produce steel castings to meet the needs of different customers.
Create a wax model
From our collection of the customer's drawings, to the two parties reaching a consensus on the production conditions, the engineer completes the design and production of the mold according to the drawings. Use an automatic wax injection machine to make wax patterns. After the workers repaired the wax model, it was handed over to the inspector for inspection. After passing the test, it will move to the tree assembly process.

tree assembly
The wax pattern is attached to a central wax stick called the runner, which includes the runners to form the tree assembly. It should be noted that different products have different tree-forming processes in order to maximize benefits. The role of the central wax rod is to create a flow path for the alloy solution to flow into each hollow gap of the wax pattern.

shell making
After the wax model tree is assembled, it is dipped and polished by a robotic arm, and then air-dried in an air-drying line. As each layer is made, the shells are dried before proceeding to the next. Repeat this process until the wax tree has reached the desired thickness and is fully hardened.

steam dewaxing
The shell will be dewaxed using a steam dewaxing kettle. The inverted shell can discharge wax and impurities better and more thoroughly, which helps to improve the surface quality of products and reduce defects such as pores and shrinkage cavities. At the same time, wax is easier to recycle, efficient and environmentally friendly.

Bake and pour
Put the shells into the kiln and bake until the specified temperature is fully burned. The chemical composition of the molten steel is analyzed with a spectrometer to ensure it is correct, and then the molten steel is poured into the shell. As the molten steel cools, the entire shell becomes a solid casting.

Post-processing
After the molten steel is cooled and solidified, the shell is broken by vibration, then cutting, grinding, shot blasting, inspection, heat treatment, etc., and then wait for the next step.

processing
We not only offer steel castings but also CNC machining services, allowing us to provide our customers with a complete single supplier solution from initial design to finished product. The machining workshop is equipped with multiple advanced CNC machining centers, CNC turning centers, CNC milling machines, CNC machining lathes, etc.

final test
Inspection accompanies all casting processes. To this end, our quality control laboratory is equipped with a variety of inspection and testing equipment such as coordinate measuring machines, spectrometers, metallographic microscopes, tensile testing machines, impact testing machines, hardness testers, magnetic particle flaw detectors, etc. , etc. to ensure dimensional accuracy and high-quality castings.

packaging and shipping
The castings are treated with anti-rust water, then dried in a dryer and packaged. Castings treated in this way have a clean appearance and will not rust for at least six months. The outer packaging is generally made of plywood boxes, or according to customer requirements. Finally, it is sent to the port for delivery to the customer.