The modern derivation of the ancient lost wax process. The wax models are realized using machined or electro discharge machined aluminium moulds. Then, they will be placed into special tanks containing thermosetting resins and micro ceramic granules. These two elements polymerize together, giving rise to an external coating that withstands the high temperatures of the molten metals. In order to minimize the issaunce of microporosity on the castings, the so-called "casting cluster" or "Shell" is introduced into a high-temperature autoclave for the complete evacuation of residual wax, obtaining in this way a negative mould ready for the next operation. At this point, after having preheated the "Shell" or "casting cluster", the molten metal is poured into it and left to cool in an environment with controlled temparature in order to avoid any metal work hardening. The external coating will be destroyed and the castings will be removed singularly, before being submitted to machining or surface finishing.
Dimensions and production batchesAccording to the planning of our customers, our compamy can produce small or large batches ensuring on-time deliveries. The dimensions of the products can vary from few grams up to 75 kg.
EDR Fittings outsources melting and machining on the Chinese market adhering to ISO9001 strict quality standardsset by DNV. Thanks to its fifteen years of experience in the melting industry,EDR Fittings has selected and built up along with it different ISO 9001 certified foundries distinguishing them by:
› melting dimension
› production batch quantity
› used material
› required finish
› melting process ( water glass, silica sol, sand casting)
› machining complexity
› melting dimension › production batch quantity › used material › required finish › melting process ( water glass, silica sol, sand casting) › machining complexity
Manufacturing time of samplesEDR Fittings ensures rapid prototyping inless than 30 days supplied with detailed dimensional reports and material analysis. (For food use DM258 21/12/2010 Migration testing 10)
Advantages of Investment Casting ( Lost-waxCasting )
› Important cost reduction by getting a high quality and industrialized product.
› Possibility of making products with a complex shape and under cutina single piece by eliminating costly machining or welding.
› Precision melting withvery limit eddimensional tolerances.
› Flexibility of production batches without tooling costs.
› Blow equipment cost that is often depreciated already with the first production order.
› High quality surface finish and possibility of inserting your company logo or code direct lyon the melting.
› Possibility of meltingall materialswhile maintaining their mechanical properties.
The tables, shown, indicate the linear tolerances as a function of the degrees of precision that are required.
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What is Investment Casting?
Investment casting, also known as Precision Casting or lost wax casting, is a casting technique that allows for the creation of small to medium-sized metal components with very tight tolerances.
What are the Advantages of Investment Casting?
It enables the production of components with very tight tolerances, which may be necessary to meet specific application requirements.
It allows for the production of small and medium quantities in a short time frame. It is a cost-effective solution for producing even highly complex parts in small to medium batches.
What Materials Can Be Used in Investment Casting?
All carbon steel alloys, stainless steel, and certain specific types of aluminum alloys can be used.
What are the Typical Applications of Investment Cast Parts?
Investment casting can be used to create any type of mechanical component for a wide range of industrial applications, including automotive, motorbikes, construction, marine, lighting, machinery, pumps, valves, and more.
What is the Typical Lead Time for Investment Cast Parts?
Generally, a sample is delivered within 45 days from the order date, and production, following sample approval, is completed in 50-60 days.
What are EDR's Production Capabilities?
Leveraging our certified manufacturing partners, we can produce anything from small batches to large-scale series. This flexibility and scalability in production make EDR a valuable partner for our manufacturing clients.
How Does Investment Casting Compare to Other Casting Methods?
Processes like die casting, investment casting, and sand casting are all valid and high-performing. The differences lie in the materials used, the intended use of the product, production volumes, and the precision required. Investment casting is the most efficient in terms of the quality/tolerances of the finished product and related costs.
Can Logos or Custom Codes Be Added to Investment Cast Parts?
Absolutely; during the mold and wax creation phase, it is possible to include logos, codes, or other elements to customize the component.
What Quality Standards Does EDR Fittings Adhere To?
EDR is an ISO 9001:2015 certified company, as are our team of manufacturing partners. Specific certifications (MOKA, NACE) are available upon request.
How Can I Request a Quote for Investment Cast Parts?
To request a quote, simply email us with the following: the component drawing (preferably in .pdf and .stp formats), the annual quantity required, the type of surface finish, and the material to be used. You will receive a detailed quote within 24/48 hours.
