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The investment casting parts could be made by silica sol process and water glass process at RMC. Our rich experience could help our colleagues produce the good parts with competitive costs.

▶ Raw Materials Available for Investment Casting (Lost Wax Casting Process)
• Carbon Steel:  AISI 1020  - AISI 1060,
• Steel Alloys: ZG20SiMn, ZG30SiMn, ZG30CrMo, ZG35CrMo, ZG35SiMn, ZG35CrMnSi, ZG40Mn, ZG40Cr, ZG42Cr, ZG42CrMo...etc on request.
• Stainless Steel: AISI 304, AISI 304L, AISI 316, AISI 316L and other stainless steel grade.
• Brass & Copper.
• Other Materials and Standards on request

▶ Capabilities of Investment Casting
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 100 kg
• Annual Capacity: 2,000 tons
• 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

▶ Post-Casting Process
• Deburring & Cleaning
• Shot Blasting / Sand Peening
• Heat Treatment: Normalization, Quench, Tempering, Carburization, Nitriding
• Surface Treatment: Passivation, Andonizing, Electroplating, Hot Zinc Plating, Zinc Plating, Nickel Plating, Polishing, Electro-Polishing, Painting, GeoMet, Zintec.
• Machining: Turning, Milling, Lathing, Drilling, Honing, Grinding.

1. ISO9001 Certificated and OEM & ODM both accepted. 
2. Application: Auto part, truck parts, other equipments and machinery parts. 
3. Main process: 1> Investment casting; 2> Deburring; 3> Sandblasting; 4> Machining; 


Why Qingdao Rinborn Machinery Co., Ltd? 

1. 18 years of experience in casting and forging for European and U.S. markets.

2. OEM & ODM products range: Auto parts, Truck Parts, Engine parts, Agriculture equipment parts, Train parts, Hardware, etc. 
3. Lost Wax Casting (Investment Casting) Material: 5140(40Cr), SAE1045(45# Steel), SAE1055(55# Steel), Staniless steel SUS404, Carbon Steel or other materials as you request.
4. Material Standard: ISO, GB, ASTM , AISI , DIN , BS, JIS. 
5. Product weight: From 0.1~50kg; 
6. Machining equipment: CNC, Lathe machine, Milling machine, Drilling machine, and so on; 
7. Test equipment: Optical Spectrum Analyzer, CMM, Hardness test equipment, Tensile test machine; 
8. Surface treatment: Blacking, Polishing, Anodize, Chrome plating, Zinc plating,Nickel plating, Tinting, Power coating, E-coating etc 
9. Heat Treatment:  annealing , discharge, carbonization, tempering, normalization and surface tempering