Product Description

Stainless Steel Lost Wax Investment Casting

Investment (lost wax) casting is a method of precision casting complex near-net-shape details using replication of wax patterns. Investment casting or lost wax is a metal forming process that typically uses a wax pattern surrounded by a ceramic shell to make a ceramic mold. When the shell dries, the wax is melted away, leaving only the mold. Then the casting component is formed by pouring molten metal into the ceramic mold.

The process is suitable for repeatable production of net shape components from a variety of different metals and high performance alloys. Although generally used for small castings, this process has been used to produce complete aircraft door frames, with steel castings of up to **0 kgs and aluminium castings of up to *0 kgs. Compared to other casting processes such as die casting or sand casting, it can be an expensive process. However, the components that can be produced using investment casting can incorporate intricate contours, and in most cases the components are cast near net shape, so require little or no rework once cast. 

Silica sol casting process is the main steel investment casting process of RMC investment casting foundry. We have been developing new technology of adhesive material to achieve much more economical and effective adhesive material to build the slurry shell. It is a overwhelming trend that Silica sol casting process replaces the rough inferior water glass process, especially for stainless steel casting and alloy steel casting. Besides the innovated molding material, the silica sol casting process has also being innovated to much steadier and less heat expanding.

▶ Ferrous and Non-ferrous Materials for Investment Casting, Lost Wax Casting Process: 
    • Carbon Steel:  AISI ***0  - AISI ***0, 
    • Steel Alloys: ZG*0SiMn, ZG*0SiMn, ZG*0CrMo, ZG*5CrMo, ZG*5SiMn, ZG*5CrMnSi, ZG*0Mn, ZG*0Cr, ZG*2Cr, ZG*2CrMo...etc on request.
    • Stainless Steel: AISI **4, AISI **4L, AISI **6, AISI **6L, 1.***4, 1.***1 and other stainless steel grade.
    • Brass, Red Copper, Bronze or other Copper-based metals
    • Other Materials as per your unique requirements or according to ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB standards

▶ Capabilities of Investment Casting Foundry
    • Max Size: 1,**0 mm × **0 mm × **0 mm
    • Weight Range: 0.5 kg - **0 kg
    • Annual Capacity: 2,**0 tons
    • Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
    • Tolerances: On Request.  

▶ Main Production Procedure
   • Patterns & Tooling Design → Metal Die Making → Wax Injection → Slurry Assembly → Shell Building → De-Waxing  → Chemical Composition Analysis → Melting & Pouring → Cleaning, Grinding & Shot Blasting → Post Processing or Packing for Shipment

▶ Inspecting Lost Wax Castings
    • Spectrographic and manual quantitative analysis
    • Metallographic analysis
    • Brinell, Rockwell and Vickers hardness inspection
    • Mechanical property analysis
    • Low and normal temperature impact testing
    • Cleanliness inspection
    • UT, MT and RT inspection

▶ Why You Choose RMC for Custom Lost Wax Casting Parts?
    • Full solution from one single supplier ranging customized pattern design to finished castings and secondary process including CNC machining, heat treatment and surface treatment. 
    • Costdown proposals from our professional engineers based on your unique requirement.
    • Short leadtime for prototype, trial casting and any possible technical improvement.
    • Bonded Materials: Silica Col, Water Glass and their mixtures.
    • Manufacturing flexibility for small orders to mass orders.
    • Strong outsourcing manufacturing capabilities.