JN30/40/JN1430 Colloidal Silica for Investment Casting

JN30/40/1430/830 Colloidal Silica for Investment Casting

Our investment casting-grade colloidal silica is a water-based nano silica binder specially developed for lost-wax casting ceramic shell manufacturing. Featuring uniform nano silicon dioxide particles, low sodium ion content and excellent high-temperature resistance, it effectively improves shell strength, reduces cracking & sand inclusion defects, and delivers ultra-smooth casting surface finish. Widely matched with zircon powder, mullite sand and refractory slurry systems, it is the core refractory binder for aerospace, medical, auto and hardware precision casting.

Core Advantages (Key Selling Points)

1.Independent R&D Nano Synthesis Technology

Self-owned laboratory with formula customization; controllable particle size (10–30nm), narrow particle distribution, low impurity, greatly enhance thermal shock resistance of casting shells.

2.Large-Scale Automated Production Strength

Full-automatic batching & synthesis production lines, annual output over 80,000 tons, stable mass supply capacity, avoid stock out for bulk orders.

3.Sufficient Permanent Inventory

Large finished product storage warehouse, conventional specifications in stock all year round, support fast delivery within 3–7 working days for urgent foundry orders.

4.Global Mass Sales & Mature Cooperation Cases

Long-term stable supply to 150+ investment casting factories across Southeast Asia, Europe, North America, covering stainless steel, aluminum, alloy casting manufacturers; year-on-year sales growth maintained steadily.

5.Low Defect Rate for Casting Production

High bonding strength, low shrinkage, effectively prevent shell crack, peel, bubble and metal penetration, lower production scrap rate and cut customer comprehensive cost.

Main Application Scenarios

Aerospace precision alloy castings: turbine blades, aviation structural parts

Medical stainless steel hardware: surgical instruments, implant accessories

Automotive precision components: auto valve, gear, engine small alloy parts

Daily hardware & machinery parts: stainless steel fittings, pump valves, lock parts

Military & energy equipment precision lost wax casting

Usage Instructions

1.Mix evenly with refractory powder (zircon flour, mullite powder) to prepare coating slurry;

2.Adjust slurry viscosity according to casting part size and shell layer requirements;

3.Dip wax patterns, apply stucco sand, air dry naturally;

4.Complete shell making, dewax and high-temperature sintering to obtain intact casting mold shell.

Packaging & Delivery
Packaging: 25kg plastic drums, 1000L IBC tote tanks; bulk tank truck shipment available

Stock: Regular grades ready in warehouse, customized formula produced within 5–10 days

Logistics: Support sea, air and land cross-border transport; professional liquid chemical packaging to avoid leakage

FAQ

Q1: What’s the difference between casting-grade colloidal silica and ordinary silica sol?

A: Our product controls ultra-low sodium ions and uniform nano particles, designed exclusively for high-temperature ceramic shells, with stronger high-temperature bonding performance than industrial general silica sol.

Q2: Can you provide customized specifications?

A: Yes, we support adjusting SiO₂ concentration, particle size and alkali content according to customers’ casting material and shell process.

Q3: How fast is your delivery?

A: Standard specifications have large spot inventory, shipped within 3–7 days; customized products take 5–10 production days.

Q4: Do you have overseas foundry cooperation references?

A: We have stable long-term cooperation with dozens of well-known investment casting manufacturers in Europe, Southeast Asia and North America, with complete supply cases for your reference.