In which parts manufacturing is investment casting applied?
Apr 09, 2024| Firstly, what parts are suitable for investment casting
1. Complex shaped parts: Investment casting can produce complex shaped parts, such as impellers, turbine blades, automotive engine intake manifolds, etc. For these parts, using investment casting can improve production efficiency and reduce manufacturing costs.
2. High temperature resistant parts: Investment casting can produce some high temperature resistant parts, such as turbine blades for aircraft engines and engine casings for spacecraft. The high strength, high heat resistance, and lower coefficient of expansion required for these parts can be achieved through investment casting.
3. High precision parts: Investment casting has high machining accuracy and is suitable for manufacturing parts that require high-precision surface and dimensional accuracy, such as automotive engine valves, rocker arms, camshafts, etc. High dimensional stability and accuracy can be achieved through investment casting.
Secondly, the advantages and disadvantages of investment casting
1. Advantages:
(1) High precision: Investment casting can produce parts with extremely high precision, reaching the CT4-6 level.
(2) Good surface quality: Investment casting can achieve good surface smoothness and appearance without requiring too much post-treatment.
(3) Good high-temperature resistance: Parts made by investment casting can maintain stability in high temperature, high pressure, and even surge environments, such as turbine blades for spacecraft and drill bits for oil drilling rigs.
2. Disadvantages:
(1) High cost: Compared to other casting processes, investment casting has a higher cost, mainly due to the high raw material cost of high-temperature liquid metal alloys required in mold manufacturing and melting processes.
(2) Long cycle: The manufacturing cycle for investment casting parts is usually several weeks to several months, which may lead to long production cycles and reduce production efficiency.
In summary, investment casting is a high-precision, surface quality, and high temperature tolerance casting technology, suitable for manufacturing parts with complex shapes, high precision, and good high temperature tolerance. Although investment casting has high costs and long cycles, its advantages are still favored by some industries and fields.