Technical Process for Investment Precision Casting

SEBON is specialized in investment precision casting like water glass casting and silica sol casting. We mainly produce stainless steel castings, carbon steel castings and alloy steel castings.
Investment precision casting is an advanced metal forming process used to produce metal parts of the highest quality, functionality and cost-effectiveness. Investment casting/ precision casting, which is also known as the “lost wax casting” process, traces its roots to the Sang Dynasty in China from 1766 B.C. to 1122 B.C. The method was brought into modern industrial use when American manufacturers applied Precision Casting/ Investment casting to make high quality military parts during World War II. It was found practical for many wartime needs – and during the postwar period it expanded into many non-aircraft applications. Today, Investment casting/ precision casting is recognized and used worldwide as a technique for producing close-tolerance metal parts at highly competitive costs.
Technical Process for Investment Precision Casting

STEP	PROCESS	DEFINITION
1	Computerized solidification analysis	Simulates the casting process in advance, eliminating multiple trials and achieving high quality, the first time
2	Tool design/build	Automated to produce patterns efficiently and provide dimensionally consistent patterns
3	Inject and assemble patterns	Injects semi-solid wax using an automated process developed in-house for higher dimensional stability
4	Shell build	Using robotics helps us shave more than five days off the shell-building process alone vs traditional foundries
5	Pre-heat oven	The high temperature we use to melt out the wax improves the feed of liquid metal and the fine detail of the cast.
6	The pour	Robotics-assisted pouring allows us to reach ultra-high temperatures, with spectrographic analysis to meet specs
7	Shell and part removal	A proprietary process removes castings, while shell removal is done with high-pressure water jets and a hot chemical bath
8	Finishing	Our blast cleaning operation„done with abrasive grit or steel shot„grinds and finishes the part to a smooth finish
9	Value-added plating, painting, assembly, and machining	Treatments and services that all work hand in hand with our modules to make your part ready for assembly
10	Delivery	Just-in-time so you don't have to hold excess inventory