Imagine a mechanical component so precise it must withstand extreme temperatures and pressures while maintaining flawless dimensions and surface finish. How is such a part created? The answer likely lies in an ancient yet sophisticated manufacturing process—investment casting, also known as precision casting or lost-wax casting. Kormax, a company with generations of foundry expertise, delivers exceptional precision casting solutions across industries through its masterful craftsmanship and uncompromising quality standards.

Kormax's expertise isn't born overnight but forged through decades of refinement. This deep industry heritage grants Kormax unparalleled mastery of metallurgy and casting techniques. More importantly, the company upholds an artisan's dedication to perfection, continuously innovating to meet increasingly stringent client demands. From material selection to final delivery, Kormax maintains rigorous processes ensuring every product meets the highest quality benchmarks.

Investment casting—a centuries-old yet widely utilized method—excels at producing components with complex geometries, tight tolerances, and superior surface finishes. Unlike conventional casting, this process often eliminates secondary machining, reducing production costs and material waste. It's particularly vital for industries requiring high-quality precision metal parts, including aerospace, medical devices, and automotive manufacturing.

Kormax's investment casting methodology blends experience, technology, and artistry. Each phase undergoes meticulous planning and control to guarantee outstanding results.

Every masterpiece begins with design. Kormax engineers collaborate closely with clients to understand functional requirements, then utilize advanced CAD/CAM software to create exact wax patterns. These patterns critically influence final dimensions and surface quality—an area where Kormax's expertise ensures compliance with even the most demanding specifications.

Molten wax injects into precision molds to form replicas of the final part. This stage demands exact control of temperature, pressure, and injection speed to achieve dimensional accuracy. Kormax employs state-of-the-art equipment to produce flawless wax patterns, establishing the foundation for subsequent steps.

Wax patterns undergo repeated dipping in ceramic slurry and refractory sand coating to form multilayered shells. Each layer's composition ensures strength, permeability, and heat resistance. Automated coating lines guarantee uniform thickness, while controlled drying prevents cracks or deformations.

High-pressure steam autoclaves melt and evacuate wax from cured shells. Kormax's advanced dewaxing systems completely eliminate residue without damaging the ceramic matrix.

Shells enter furnaces for sintering, enhancing structural integrity. Temperature and duration are precisely calibrated based on shell characteristics—a process overseen by Kormax's experienced technicians.

Molten metal fills fired shells; after solidification, technicians break away the ceramic to reveal castings. Post-processing may include heat treatment, surface finishing, or machining. Kormax's metallurgical control ensures optimal material properties, while tailored finishing services address specific client requirements.

Kormax casts diverse alloys including:

• Stainless steels: Martensitic, austenitic, and duplex grades for marine, pump, valve, and hydraulic applications
• Carbon/low-alloy steels: Ideal for couplings, crankshafts, fasteners, and mechanical components
• Ductile/gray iron: Automotive, piping, bearing, and hydraulic parts
• Bronze: Bearings, gears, pump impellers, and architectural elements

Kormax accommodates:

• Weight range: 0.1–125 kg
• Surface finish: 125 Ra (~0.15 mm tolerance)
• Lead times: 3+ weeks development; 3–8 weeks production

Kormax serves sectors including:

• Mining: Material handling components
• Industrial: Fluid system parts
• Defense: Firearm and vehicle components
• Automotive: Engine and turbocharger parts
• Aerospace: Turbine blades and housings
• Medical: Biocompatible instruments

With 75+ years of foundry experience, Kormax combines traditional craftsmanship with modern innovation to deliver precision-cast solutions that meet the most exacting industry standards.