Investment Casting
An introduction for Investment casting
Lost wax casting is  a manufacturing process in which a wax pattern is used to shape a disposable ceramic mold. A wax pattern is made in the exact shape of the item to be cast. This pattern is coated with a refractory ceramic material. Once the ceramic material is dried and hardened, it is turned upside-down and heated until the wax melts and drains out.  Molten metal is poured into the mold and is left to cool. The metal casting is then broken from of the spent mold.
Due to the complex structure in dimension and geometric, the investment castings are produced to reach net shape minimizing net shape, minimizing the need for secondary processes such as lathing, turning or other CNC machining process.
What We can Achieve by Lost Wax Investment casting
Lost wax investment castings with silica sol as binder material can reach dimensional tolerance grade CT4 ~ CT7according to 1S0 8062. Our fully organized equipment and automation process controls allow for consistent and repeatable tolerances as close as + 0.1 mm. The lost wax casting parts can also be produced in a wide size range,they may be as small as 10 mm long x 10 mm wide x 10 mm high and weigh as little as 0.01 kg, or as big as 1000 mm in length and weigh as much as 100 kg.
S is an industry leading manufacturer of top-quality investment castings committed to delivering excellent quality superior value and exceptional customer experience. RMC has the experience, technical expertise and quality assurance processes to consistently and reliably deliver an extensive range of castings with further processing
Max Size of Casting:1,000 mm x 800 mm x 800 mm
Cast Weight : 0.5 kg -100 kg
Annual Capacity: 1,000 tons
Bond Materials for Shell Building: Silica Sol(in-house casting workshop ), Water Glass or their mixtures(outsourcing)
Casting Tolerances: CT4~CT7 according to lS0 8062 or on Request.
What Metals and Alloys We can Pour by Investment Casting
The investment casting foundry can meet various alloys material designations and specifications according to ASTM, SAE, AISI, AC, DIN, GOST, EN, ISO, and GB standards. We have more than 100 different ferrous and non-ferrous alloys with which we cast parts using complex design structures.,
Gray Cast lron: HT150,HT200,HT250,HT300,HT350,EN-GJL-100,EN-GJL-150, EN-GJL-200,EN-GJL-250, EN.GJL-300. EN-GJL-350.GG10.GG15. GG20. GG25. GG30. GG40. ASTM A48 Gray lron Grades Class 20. Class 25Class 30 Class 35 Class 40 Class 45 Class 50.Class 55.Class 60..
Ductile Cast iron (Nodular iron): China GB QT400-18. QT450-10,QT500-7. QT600-3. QT700-2 QT800-2 ;GGG40,GGG45,GGG50,GGG60,GGG70,GGG80,EN-GIS-400-18,EN-GJS-400-15,EN-GJS-450-10,EN-GJS-500-7,EN-GJS-600-3. EN-GJS-700-2, EN-GJS-800-2. ASTM A536
Ductile lron Grades 60-40-18. 65-45-12.70-50-05.80-60-03.100-70-03.120-90-02.
Carbon Steel: AlSI 1020~AISI 1060.C30.C40.C45.
Alloy steel: ZG20SiMn, ZG30SiMn,ZG30CrMo,ZG35CrMo.ZG35SiMn.ZG35CrMnSi.ZG40Mn.ZG40Cr.ZG42CrZG42CrMo. etc.
Stainless Steel: 304,304L 316,316L, 1.4401,1.4408,1.4301,1.4305,1.4307,1.4404, 1.4571.etc.Duplex Stainless Steel (DSS)
Corrosion-resistant Steel, Seawater-resistant Steel, High-temperature Steel, High-tensile Steel, Duplex Stainless Steel.
Other Alloys as request or according to ASTM, SAE, AISI, GOST, DIN, EN, ISO, and GB
lnspection of lnvestment castings
- Spectrographic and manual quantitative analysis
- Metallographic analysis
- Dimensional tests
- CMM
- Brinell, Rockwell and Vickers hardness inspection
- Mechanical property analysis
- Low and normal temperature impact testing
- Cleanliness inspection
- MT and RT inspection
- Staic and Dynamic Balancing
- Sealing and Pressure Testing
Which Industries Our Investment Castings Are Serving
The application of investment casting parts covers a wide range of industries,
At Siyuan Foundry, our lost wax casting involves in those industry High-speed rail &railroad, Heavy Duty Trucks
Agricultural  Equipment, Construction  Equipment, Wind power, Vehicle
Why You Choose Siyuan for Investment Castings parts
- Engineering team whose members are focusing on metal casting field with 20 years experience.
- In-house CNC machining work shop
- One-stop solutions for investment castings and secondary process
- Consistent quality Guaranteed and continuous improvement.
- Teamwork including toolmakers, engineering, foundry man, machinist and production technicians.
