Silica Sol Investment Casting
Is widely used for various kinds of steel castings, and has its special advantages of the best surface finish compared with other steel casting methods. As usual, if people mention the investment casting, it means Silica Sol Investment Casting. To mention the Silica Sol just to tell the difference to water glass investment casting.
Water Glass Investment Casting
Wather Glass , it is so called sodium silicate as the binder, offering lower cost production but with less precise results compared to silica sol investment casting.
But no matter the surface finish and the dimension accuracy still better than sand casting.
The production lead time- Water Glass Investment casting is 50% shorter than Silica Sol Investment Casting.
It is the process between Silica Sol Investment Casting and Sand casting process, als the cost between them too.
From the ISO 8062 Casting Tolerance Grade comparasion,
Silica Sol Investment Casting range from CT5-CT7
Water Glass Investment Casting range from CT7-CT8
How to choose which solution blinder suitable for you?
High precision, high surface finish, less or no machining need – Silica Sol Investment Casting is the best choose.
Cost senstive, need short lead time, require machining anyway-Water Glass Investment Casting is ok.
Leesh Holdings Silica Sol Investment Casting
After years develpment, Leesh holdings built both production lines to meet global customers’ special requirements.
Annual output reach to 13,000 Tons which is 70% of our desin capcacity. please see our typical parts below:
As a leading Cast Parts Manufacturer in China, we provides high-quality investment casting services, specializing in the production of precision valve body components. As shown in our facility, we handle high-volume orders for complex parts, from raw casting to finished product. Using advanced investment casting techniques, we manufacture durable valve body parts in various alloys, including stainless steel and bronze. We are an OEM partner for your industrial needs.
| Manufacturing Method | Investment Casting(Lost Wax Casting) |
| Material Standard | GB, ANSI, BS, DIN, JIS, ASTM, ASME, AISI, etc Carbon steel, Low carbon steel, Middle carbon steel, G35, G45, WCB, WCA, WCC, ISO 340-550, etc. Alloy Carbon steel: G25CrMo4, Heat Resistant Steel, etc. Stainless Steel: SUS 304, 304L, 316, 316L, CF8, CF8M, G-X7CrNiNb1189, AS2074 or according to customer specific requirement. Copper, Brass, Bronze |
| Weight Range | 0.01 kgs to 100 kgs |
| Cast Hole Min. Dia. | Ø2mm |
| General Casting Tolerance | CT4-CT7 |
| Design Software | UG, Pro-E, Inventor |
| Dwg Format | STP, STEP, IGS,STP,X_T ,DXF,DWG , Pro/E, PDF, SLDPRT |
| Mould Manufacturing | Yes |
| Casting Stimulation | Yes |
| Ultimate machining tolerance | 0.005mm |
| Quality Control | RT,UT,MT,PT,CMM,SCAN,Chemical and Mechanical Property Testing,Spectrometer,etc |
| Finish Roughness | Ra1.6-Ra3.2 according to customer requirement |
| Logo/ID | Silk-screening, Laser Marking, Engrave,Painting |
| Heat Treatment | Normalization, Annealing, Quenching and Tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching,etc |
| Surface Treatment | Shot/sand blast, Polishing, Surface Passivation, Painting , Anodizing,Powder coating, ED- Coating, Chrome Plating, zinc-plate, Dacromat coating, Finish Painting,hot-dip galvanizing, etc |
Investment casting, also known as lost wax casting, is a casting method in which a pattern is made of a melt-able material, then coated with several layers of refractory material to form a shell, and the pattern is melted away after high-temperature firing, and then the molten metal is poured into the shell.
Investment casting have high precision and high surface quality, with small machining allowances, which can achieve less or no machining requires. Investment casting can cast complex thin-walled parts with complex shapes (the minimum wall thickness can reach 0.25-0.4mm), and the smallest hole diameter can reach 2.5mm.
The process normal as below:
Drawing Review ->Tooling Designing ->Tooling Manufacturing ->Wax Pattern Making ->Pattern Tree Assembly ->Dipping and Coating ->De-waxing and Firing- Pouring-Knockout ->Grinding ->Heat Treatment -> Machining(if requires) ->Inspection->Delivery
Leesh holdings is the key leading supplier of investment cast parts to both China market and global market.Through many years development, our casting parts now services in railway, automobile and truck, construction machinery, mining machinery, forklift truck, agricultural machinery, ship, petroleum machinery, construction, pump valve, mechanical and electrical, hardware tools, electric power equipment, etc.
Leesh capability
Method: Investment Casting, Lost Wax Casting, Precision Casting
| Process Description | Process Control | |||
| Mass(kgs) | General Tolerance Standard | Casting Tolerance(CT) | Surface Rougness(μm) | |
| Silicon Sol | 0.05-50 | ISO 8062 | CT4-CT6 | Ra 3.2～6.3 μm |
| Water Glass | 0.10-100 | ISO 8062 | CT6-CT8 | Ra 6.3～12.5 μm |
Material:
Stainless Steel (General SUS304, SUS316, 1.4301), etc.,
Stainless Iron (General 201, 420, 430), etc.,
High/Middle/Low Carbon Steel (A3, Q235, 45), etc.,
Alloy Steel (General 20cr, 20crmo, 20crnimo, 40cr, 40crmo, 40crnimo, 42cr, 42crmo, 42crnimo) etc.,
Brass (H59, H62, H75, H80), etc.,
Red Copper, Bronze, White Copper and other materials.
The above list Is For Reference Only, If You Have Special Needs, Please Contact Customer Service Staff.
Post Casting Process:
Ordinary Polishing, Mirror Polishing, Electrolytic Polishing, Brushed Finishing, Grinding, Heat Treatment, Finishing, Drilling and Tapping,Plating, etc
Surface Treatment:
polishing, powder coating, zinc plating, chrome plating,heat treatment,tumbling polishing, electro-polishing.
We understand your concerns about the quality, we have bought full sets of advanced inspection facilities,Spectrum analyzer, metallographic microscope, tensile testing machine, low temperature impact testing machine, X-ray flaw detection machine, magnetic particle flaw detection machine, ultrasonic flaw detection machine, coordinate measuring instrument, image measuring instrument. The above equipment can ensure the supply of high-standard precision castings to customers, and meet customers’ comprehensive testing requirements for physical and chemical properties of materials, non-destructive defect testing, and high-precision geometric size testing.
https://chinafoundrygroup.com/investment-casting-service/
