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Why? | History | Basics | Countergravity
Why Investment Casting?
Hitchiner Manufacturing Co., Inc. is the premier supplier of complete-to-print, high-volume, complex thin-wall investment castings and fully-finished casting-based subassemblies and components to industry. Hitchiner has chosen to utilize, develop, and enhance the investment casting process because of its many advantages in effeciently producing complex metal components, including:

Design flexibility

Investment casting produces near-net-shape configurations, offering designers and engineers freedom of design in a wide range of alloys. The process is capable of producing precise detail and dimensional accuracy in parts weighing many pounds or just a few ounces.

Wide choice of alloys

More than 120 ferrous and nonferrous metals are routinely cast at Hitchiner.
Elimination of tooling setup

By offering near-net-shape configuration, fixturing costs are substantially reduced or eliminated.

Reduction of production costs

Costly machining operations are reduced and often eliminated. No capital equipment investment is needed to produce parts in-house.

Reduction of assembly operations

Several parts can be made as one casting, reducing handling, assembly and inspection costs.

Reproduction of fine details

Splines, holes, bosses, lettering, serrations and even some threads can be cast.

Process Comparison Chart

Process
Tool
Cost
Unit
Cost
Metal
Options
Design
Freedom
Volume
Capabil.
Draft
Req'd
Tolerance
Control
Size
Range
Surface
Finish
Wall
Min.
Normal
Delivery
Investment
Cast
Avg. High Most Most All No Avg. Avg. Avg. Small* Avg.
Die Cast High Low Few Least High Yes Avg. Avg. Avg. Avg. Avg.
Forging High Avg. Avg. Least High Yes Poor Avg. Poor Large Long
Permanent
Mold
Avg. Avg. Avg. Avg. All Yes Avg. Avg. Avg. Large Avg.
Plaster
Mold
Low High Few Avg. Low Yes Avg. Avg. Avg. Large Short
Powder
Metal
Avg. Low Avg. Least High No Best Small Best Small Avg.
Resin Shell
Mold
Avg. Avg. Avg. Avg. All Yes Avg. Avg. Poor Large Avg.
Sand Cast Low Avg. Most Avg. All Yes Poor Large Poor Large Short

* Wall thickness "Small" with Hitchiner's countergravity processes, "Average" with gravity casting.