WEIFANG JUNLONG MACHINERY CO.,LTD

WEIFANG JUNLONG MACHINERY CO.,LTD

TEN KEY INSPECTION POINTS FOR SILICA SOL COMPOSITE INVESTMENT CASTING IN EXPORT ORDERS (COMPLIANT WITH CUSTOMER REQUIREMENTS & SYSTEM AUDITS)

2026 05/28

Silica Sol Composite Precision Casting for Export Orders is typically used for stainless steel, alloy steel, heat-resistant steel, and some high-temperature alloy parts. Export customers usually focus not only on dimensions and appearance but also on traceability, process capability, compliance documentation, cooperation with third-party inspections, and the ability to provide complete evidence chains during system audits. The following summarizes the ten key inspection points for silica sol composite precision casting, covering raw materials, processes, finished products, and documentation, to help meet customer acceptance requirements and the common needs of system audits such as ISO 9001, IATF 16949, and AS9100.

1. Review and inspection of orders and drawings, shifting acceptance criteria to the front.

2. Inspection of Raw Materials and Auxiliary Materials, and Foundation for Compliance of Materials and Systems

3. Wax Pattern and Mold Making Process Inspection: Ensuring Dimensional Consistency from the Source  

4. Inspection of Key Shell-Making Parameters: The Core of Surface Quality and Shell Strength  

5. Dewaxing and Sintering Inspection: Critical Checkpoints for Preventing Cracked Shells and Reducing Inclusions  

6. Inspection of Melting and Pouring Processes, Determining Internal Quality and Mechanical Properties

7. Cleaning, Cutting, Grinding, and Visual Inspection: Expose Defects Early  

8. Dimensional and Geometric Accuracy Inspection: Use Appropriate Methods to Control Risks  

9. Internal Quality and Non-Destructive Testing (NDT) Inspection: Meet Common Export Acceptance Requirements 

10. Documentation, Marking, Packaging, and Outbound Inspection: Close the Loop for Customer Factory Audits and System Reviews