Investment Casting

China Lost Wax Castings Manufacturer

Investment casting is a very versatile process which is ideal for simple or complex, low or high volume production. Be-cu investment casting services can reduce the processing time and cost of CNC machining parts, as we can manufacture a large number of prototypes in batch quickly and modify the appearance with CNC techniques to deliver the final desired parts. Whether you want to look for an investment casting manufacturer casting stainless steel, duplex stainless steel, titanium, carbon steel, tool steel, and aluminum alloys, professional technicians will perform investing casting process with a wide variety of metals, and be able to offer complex detail, smooth surface finish, and high definition in an economic way for clients. Weight range from a few grams to almost one metric ton. We also provide a broad range of secondary service including machining, surface finishing etc.Our investment casting parts are used across broad fields, such as energy, automotive, gas, and oil, food, etc. ISO 9001 certification and multiple-stage quality inspection implementation will ensure the quality and performance of the lost wax casting products to be delivered.

Why Choose Be-cu Investment Casting?

• Be-cu company annual output of stainless steel, carbon steel, alloy steel, aluminum alloy and other castings and precision machining parts to 3800 tons
• The company adheres to the management concept of “people-oriented, excellence, sustainable operation, and steady development”, and strictly controls all links in accordance with the requirements of ISO9001 quality management system. At the same time, it introduces casting simulation software CAE, ERP management software, automatic wax injection machine, and automatic shell making machinery. Arm, OKUMA precision machining equipment and other advanced software and hardware, and constantly improve the technological level and production efficiency.
• Production and testing are carried out in strict accordance with ASTM, DIN, BS, JIS and other international material standards and tolerance standards, with complete testing and laboratories, equipped with imported precision spectrometers, optical measuring instruments, hardness measuring instruments, surface roughness measuring instruments and other advanced Testing equipment can provide customers with various component analysis, size and product performance testing reports to ensure that every product delivered to customers meets the requirements and can be traced.

• Inject wax into a permanent die form wax pattern with the same details of the cast part.
• Assembly multiple wax components to form the gate and runner system.
• Immerse the entire wax assembly in refractory material like ceramic slurry, make it fully covered with the stucco, and forms a ceramic shell, which is built around a tree assembly by repeatedly dipping a pattern into a slurry.
• Heat the entire assembly to melt away the wax.
• When the residual wax pattern and gate material have been removed, the ceramic mold remains with a cavity in the shape of the part.
• Preheat the metal and pour the molten metal into the mold.
• Once the castings cooled, remove the part from the mold.
• Post-processing and machining to achieve required specifications.
• Normal linear tolerances of investment casting are as follows as a general rule: Up to 1” +/- .010”, for each additional inch up to ten inches +/- .003” per inch. For dimensions greater than ten inches allow +/- .005” per inch. Secondary operations such as straightening and sizing will produce closer dimensional tolerance.
• Dimensional and quality inspections and other testings before shipment.

The Roughness Comparison Of Investment Casting

This standard is based on the casting surface roughness comparison sample block specified in (GB/T 15056-2017) for the inspection of casting surface roughness plating, as a reference for casting process and casting surface roughness selection.

• The surface roughness (Ra) of stainless steel sand casting is 25-50
• The surface roughness (Ra) of stainless steel water glass investment casting is 6.3-12.5
• The surface roughness (Ra) of stainless steel silica sol investment casting is 3.2-6.3
• The surface roughness (Ra) of aluminum alloy sand casting is 25-50
• The surface roughness (Ra) of aluminum alloy silica sol investment casting is 3.2-6.3
• The surface roughness (Ra) of aluminum alloy die casting is 2.5-3.2
• The surface roughness (Ra) of copper alloy sand casting is 25-50
• The surface roughness (Ra) of copper alloy silica sol investment casting is 3.2-6.3
• The surface roughness (Ra) of steel/aluminum/copper CNC Machining is 0.8-3.2