Composite silica sol casting is an advanced technology of investment casting. It produces refractory shells through a composite binder system of "silica sol inner layer + water glass outer layer": the inner silica sol ensures the cavity precision and surface finish, while the outer water glass enhances the shell strength, which can withstand the pouring pressure of high-melting-point alloys (such as stainless steel and superalloys). After the wax pattern is completely melted away, the molten metal fills the shell under vacuum or atmospheric pressure, and finally, near-net-shape castings are obtained.
The precision grade reaches IT6-IT9, and the surface roughness is as low as Ra0.8-3.2μm, which can eliminate subsequent machining processes;
It supports the forming of complex inner cavities, thin-walled structures (minimum wall thickness of 0.5mm) and special-shaped parts without split welding;
It is suitable for high-strength materials such as stainless steel, titanium alloys, and superalloys, with stable mechanical properties of castings (tensile strength increased by 10-15%);
The composite binder reduces the shell cost (15-20% lower than the pure silica sol process), balancing precision and economy.
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Founded in 1996, our company is an enterprise with nearly 30 years of successful operation in Qingdao City, Shandong Province, China. We integrate production and trade into one operation. Additionally, we have cooperative factories that can undertake outsourcing services such as electroplating and spraying.
You can send your drawings and data files to us via the email provided on our official website. If you do not have drawings or data files, we can discuss conducting on-site or cooperative mapping, and the results will be confirmed with you before proceeding.
We offer a full range of production services including:
• Casting
• Heat treatment
• CNC machining
• Assembly
• Surface treatment
Our company operates under the following international and national management systems to ensure quality and environmental compliance:
Quality management systems: ISO 9001-2015 and IATF 16949:2016
Environmental management systems: GB/T 24001-2016 / ISO 14001:2015
For product development, we strictly implement the five phases of APQP (Advanced Product Quality Planning):
Planning and defining the project
Product design and development
Process design and development
Product and process validation
Feedback, assessment, and corrective actions
Through the systematic planning and implementation of these five phases, the ISO 9001-2015 and IATF 16949 standards ensure full-process quality control from product design to mass production, thereby enhancing product reliability and customer satisfaction.
The sample lead time varies depending on the material and complexity of the product. In general: If the mold is provided by the customer or available for use, the sample lead time is 15-30 days. If a new mold needs to be developed, the sample lead time is 30-45 days.
No. 248, Sancheng Road, Dianzi Town, Pingdu City, Qingdao
