Water Glass Casting

What’s the water glass casting ?

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Water glass casting, also known as sodium silicate casting, is a type of sand casting process that uses a mixture of sodium silicate (water glass) and sand as the molding material. This process is commonly used to produce ferrous and non-ferrous metal castings.

The water glass casting process typically involves the following steps:

Pattern Creation: A pattern of the desired part is created using wood, metal, or other materials. The pattern is a replica of the final part and is used to create the mold cavity.

Molding: The pattern is placed in a flask, and a mixture of sodium silicate and sand is poured around the pattern to create the mold. The sodium silicate acts as a binder, holding the sand together to form a solid mold around the pattern.

Setting: The sodium silicate-sand mixture sets and hardens around the pattern, forming a rigid mold. The mold is then removed from the pattern, leaving behind a cavity in the shape of the original pattern.

Assembly: If necessary, multiple mold sections are assembled to create a complete mold cavity for the casting.

Pouring: Molten metal is poured into the mold cavity, filling the space left by the pattern.

Cooling and Solidification: The molten metal cools and solidifies within the mold cavity, taking on the shape of the pattern.

Shakeout: Once the metal has solidified, the mold is broken away, and the metal casting is removed. Any remaining sand and sodium silicate residue is removed through a shakeout process.

Water glass casting is known for its ability to produce castings with good dimensional accuracy and surface finish. It is commonly used for producing a wide range of components, including pump and valve parts, engine components, and various industrial machinery parts. The process offers advantages such as cost-effectiveness, ease of mold preparation, and the ability to produce intricate shapes. However, it also has limitations, such as the need for careful handling of the sodium silicate binder and the potential for mold erosion during pouring.

what kind of material suit for water glass casting? 

Carbon Steel: Water glass casting is well-suited for casting carbon steel components. Carbon steel castings produced using this process can be used in a wide range of applications, including machinery parts, automotive components, and industrial equipment.

Low Alloy Steel: Low alloy steels, which contain small amounts of alloying elements such as manganese, molybdenum, chromium, and nickel, can also be effectively cast using water glass casting. These materials are often used in applications that require improved mechanical properties compared to carbon steel.

Stainless Steel: Certain types of stainless steel, particularly those with lower alloy content, can be cast using water glass casting. Stainless steel castings are used in applications requiring corrosion resistance and high strength.

Non-Ferrous Metals: While water glass casting is commonly associated with casting ferrous metals, it can also be used to cast non-ferrous metals such as aluminum, copper, and brass. These materials are used in a wide range of applications, including automotive, aerospace, and general engineering.

It’s important to note that the specific alloy composition, mechanical properties, and casting characteristics of the material will influence its suitability for water glass casting. Additionally, the design of the component, the complexity of the part geometry, and the specific requirements of the application will also play a role in determining the suitability of water glass casting for a particular material.

Common Alloy Steel Grades for Casting

Benefits of water glass casting

Water glass casting, also known as sodium silicate casting, offers several benefits, making it a preferred casting method for certain applications. Some of the key advantages of water glass casting include:

Cost-Effectiveness: Water glass casting is a relatively cost-effective casting method, as it does not require expensive equipment or complex tooling. This can result in cost savings, especially for low to medium volume production runs.

Design Flexibility: The process allows for the production of complex and intricate shapes with minimal tooling and assembly requirements. This flexibility is particularly beneficial for components with intricate internal features and complex geometries.

Good Dimensional Accuracy: Water glass casting can achieve high dimensional accuracy and repeatability, resulting in consistent and precise castings.

Reduced Machining Requirements: The process can produce near-net shape castings with tight tolerances, reducing the need for extensive machining operations and minimizing material waste.

Improved Surface Finish: Water glass castings often exhibit a smooth surface finish, reducing the need for additional finishing operations and enhancing the overall aesthetics of the final product.

Environmental Benefits: Water glass casting can be considered environmentally friendly, as it eliminates the need for sand cores and binders, reducing the generation of waste associated with traditional sand casting processes.

Reduced Tooling Costs: The use of sodium silicate and sand as the molding material eliminates the need for complex and expensive tooling, such as cores and molds, which can result in cost savings.

Material Versatility: Water glass casting can be used to cast a variety of materials, including carbon steel, low alloy steel, stainless steel, and non-ferrous metals, providing versatility for a wide range of applications.

It’s important to note that while water glass casting offers these advantages, it also requires careful attention to mold preparation, handling of the sodium silicate binder, and metal pouring to ensure successful castings. Additionally, the suitability of water glass casting depends on the specific requirements of the component and the overall production process.

Keming Machinery: Leading Water Glass Casting Manufacturer and Exporter

Keming Machinery is a well-known enterprise in the field of water glass casting, specializing in the production and export of high-quality castings for various industrial applications. Comin Machinery attaches great importance to precision, quality and customer satisfaction, and has become a trusted partner for customers looking for reliable casting solutions.

Manufacturing excellence:

Keming Machinery has the most advanced equipment, equipped with advanced machinery and technology to ensure the precision production of water glass castings. The company’s manufacturing process adheres to strict quality standards and includes the pattern creation, molding, casting and finishing stages. By leveraging their expertise in water glass casting, Comin Machinery is able to provide custom complex parts to meet our customers’ unique specifications.

quality assurance:

At Keming Machinery, quality assurance is of utmost importance. The company implements strict quality control measures at every stage of the manufacturing process to ensure the integrity and accuracy of castings. Through meticulous inspection and testing procedures, Keming Machinery upholds the highest quality standards to ensure that each casting meets or exceeds industry requirements and customer expectations.

Export focus:

As a dedicated exporter, Keming Machinery has established a strong global presence, serving customers in international markets. The company’s commitment to excellence, coupled with the ability to customize solutions for different industrial sectors, makes it a preferred supplier to businesses looking for reliable water glass castings. With its focus on timely delivery and competitive pricing, Keming Machinery has earned a reputation for reliability and professionalism in global export markets.

Customer-centric approach:

Keming Machinery attaches great importance to establishing long-term partnerships with customers. The company’s customer-centric approach involves understanding each customer’s specific needs and providing customized solutions that meet their requirements. By providing responsive communication, technical expertise and collaborative problem solving, Comin Machinery is committed to building trust and creating value for our customers.

Innovation and sustainable development:

In the ever-evolving industry, Keming Machinery has always been committed to innovation and sustainable development. The company continuously invests in research and development to improve manufacturing processes, optimize resource utilization and minimize environmental impact. By embracing sustainable practices and exploring new technologies, Comin Machinery aims to remain at the forefront of the water glass casting industry while contributing to a greener, more sustainable future.

In conclusion, Keming Machinery has become a leading manufacturer and exporter of water glass casting with its dedication to quality, precision and customer satisfaction. With superior manufacturing capabilities, global export capabilities, customer-centric values, and commitment to innovation, Comin Machinery will continue to be a trusted partner for businesses seeking top-notch water glass casting solutions.