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Lost-wax metal casting, also known as the lost-wax process, is a metal casting method where molten metal is poured into a mold or die made from a wax pattern. 

The marine engineering sector is witnessing a resurgence in precision manufacturing, driven by the revival of lost-wax casting (investment casting) for producing critical ship components. 

Casting is an efficient method for producing raw castings, with sand casting being the most widely used technique. Castings can be manufactured using methods that allow for complex structures

Specializing in high-precision metal parts manufacturing for reliable valve systems

In addition to meeting the requirements of accuracy, completeness, and clarity, dimensional annotations on part drawings should also be reasonable. Reasonable dimensional annotation refers to annotations that not only meet design requirements but also satisfy process requirements, facilitating part machining, measurement, and inspection.

Meeting industrial demands for bespoke metal components, we integrate precision casting with intelligent machining to deliver end-to-end solutions across 20+ sectors, from medical devices to renewable energy.

A professional manufacturer of metal valve components, specialising in high-precision machining and strict quality control, providing valve  components (valve cores, valve seats, housings, etc.) that comply with ISO 9001 standards. Products cover stainless steel, brass, and special alloy materials.

The Effect of Casting Shrinkage on Crankshaft Fatigue Strength Previous research has reported that a certain factory experienced a large number of crankshaft fractures. Upon visual inspection of the crankshaft, it was determined that the primary cause of the fractures was casting shrinkage at the connecting rod journal position, which was visible to the naked eye. The cause was analyzed as follows: under conditions where cold iron supply was problematic, the cold iron used for shrinkage compensation was omitted during crankshaft molding. After reinstating the chill iron process, the casting shrinkage issues in the crankshaft were successfully resolved. This demonstrates that casting shrinkage has a significant impact on the fatigue strength of crankshafts.

Investment casting, also known as lost wax casting, is a highly advanced precision casting process widely used across various industries. This technique involves creating a pattern from easily melted materials such as wax or stearic acid. The pattern is coated with multiple layers of refractory materials to form a strong ceramic shell. Once the wax is melted out, molten metal is poured into the cavity to form the final casting. The result is a high-precision metal part with excellent surface smoothness and minimal need for additional machining.

In the field of precision mechanical machining, there is a common misconception that “the stricter the tolerance, the better the quality.” In reality, overly pursuing strict tolerances may lead to increased costs, extended lead times, and no improvement in functionality. Mastering the design principle of “setting limits as needed and allowing appropriate flexibility” is essential to achieving the optimal balance between quality, cost, and efficiency.