The New Era of Green Precision Casting – Advanced High-Temperature & High-Pressure Steam Dewaxing Process of Cangzhou KH Fittings Co., Ltd.

Cangzhou KH Fittings Co., Ltd. has always been committed to providing customers with high-quality precision castings and solutions. We are well aware that excellent products start from the pursuit of perfection in every manufacturing link. We have achieved a comprehensive technological upgrade in the core dewaxing process and adopted a fully automatic high-temperature & high-pressure steam dewaxing autoclave. With a more environmentally friendly, more precise and more efficient production process, we are leading the green transformation of the industry.

Process Comparison: A Dialogue Between Technology and Tradition

Dewaxing is a key step in investment casting (lost-wax casting), and its method is directly related to the quality of the mold shell and the precision of the final casting. The following is a direct comparison between the two processes:

1. Traditional Fire Dewaxing Process

l Principle: Place the mold shell (with the sprue cup facing downward) that has completed coating in an open iron trough or kiln, and directly use an open flame (such as natural gas or diesel flame) to burn from the bottom, so that the wax material melts, burns and flows out.

l Characteristics:

n Open flame combustion: The temperature is uncontrollable, which easily causes local overheating or undercooling of the mold shell and leads to cracks.
n Environmental impact: Incomplete combustion of wax produces a large amount of black smoke, pungent odors and harmful gases, which is unfriendly to the working environment and the surrounding ecology.
n Quality risk: The stress caused by intense combustion is likely to crack the mold shell, and residual wax ash may cause defects such as air holes and inclusions in castings.
n Efficiency and safety: It is a semi-automatic operation that relies on workers' experience and has high safety hazards.

2. High-Temperature & High-Pressure Steam Dewaxing Process

l Principle: Put the mold assembly into a closed steam dewaxing autoclave, and inject high-temperature & high-pressure saturated steam to uniformly heat the surface and internal wax material of the mold shell in an instant, so that the wax material melts quickly and flows out from the sprue cup.
l Characteristics:
n Gentle and uniform heating: High-temperature steam surrounds the entire mold shell without dead ends, ensuring uniform heat conduction and small thermal shock, which greatly reduces the risk of mold shell cracking.
n Environmental protection and cleanliness: The entire process is carried out in a closed environment. The melted wax can be centrally recycled and reused, with no smoke or waste gas emissions, realizing green and clean production.
n Superior quality: The mold shell has excellent integrity with almost no residue, which fundamentally reduces defects such as air holes and slag inclusions in castings, and significantly improves the product qualification rate and dimensional accuracy.
n High efficiency and safety: With fully automatic control, the dewaxing cycle is short (usually only tens of seconds), the production efficiency is high, and the safety hazards caused by open flames are completely eliminated.

Intuitive Comparison Table: Obvious Advantages at a Glance

Feature Dimension	Traditional Fire Dewaxing Process	High-Temperature & High-Pressure Steam Dewaxing Process
Working Principle	Direct open flame combustion	Uniform heating by high-temperature & high-pressure steam
Environmental Impact	Heavy smoke, strong odor, non-environmentally friendly	No smoke, no odor, green and clean
Mold Shell Integrity	Prone to cracking, high risk	Good integrity, extremely low cracking risk
Wax Material Handling	Wasted by combustion, non-recyclable	Recyclable and reusable, lower cost
Casting Quality	Prone to defects like air holes and inclusions	Smooth surface, few internal defects, high precision
Production Efficiency	Long cycle, dependent on manual operation	Short cycle, fully automatic operation
Safety	Safety hazards such as fire and scalding	Closed operation, safe and reliable

Choose Us, Choose a More Reliable Quality Guarantee

The selection of the high-temperature steam dewaxing process is a profound practice of KH's core values of "Quality First, Environmental Protection Priority, Customer Satisfaction". It means we can provide you with:
l More consistent product quality: Fundamentally reduce the rejection rate caused by the dewaxing link.
l More precise and complex castings: The intact mold shell ensures the perfect presentation of casting details.
l A more environmentally friendly partnership: Choosing us means choosing a responsible supplier committed to sustainable development.
KH will continue to invest in technological innovation and continuously improve product quality and service standards. We believe that this advanced dewaxing process will bring customers an unprecedented value experience.

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