News

Nov07

Gray Cast Iron: Overview and Applications

Gray cast iron generally refers to cast iron with high contents of carbon, silicon, and manganese, and low sulfur content. It is formed through a graphitization process when molten iron cools slowly, with graphite distributed in flake form. It gets its name from the dark gray color of its fracture surface. Gray cast iron, which contains flake graphite, primarily consists of iron, carbon, silicon, manganese, sulfur, and phosphorus. As the most widely used type of cast iron, it accounts for over 80% of the total cast iron production. Molten iron with a specific composition, after simple on-site furnace treatment, produces cast iron with flake graphite upon pouring—also known as gray cast iron.

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Nov06

Investment Casting vs. Die Casting: A Comprehensive Comparison of Pros and Cons

Investment casting and die casting are two commonly used methods in the manufacturing industry for producing complex metal parts. Investment casting, also known as precision casting, has an ancient origin. Its early applications can be traced back to ancient China, where it was used to create intricate handicrafts. Modern investment casting began to gain prominence in industrial production in the 1940s. Die casting originated from the type-casting technology in the printing industry in the mid-19th century and gradually developed into a key manufacturing process. Investment casting is used for complex components in the aerospace and medical industries, while die casting is widely applied in the automotive and electronics industries due to its high efficiency and precision.

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Nov05

What is CNC Machining?

CNC machining is a subtractive manufacturing technology. It uses various cutting tools to remove material from a raw workpiece (or blank) until the desired shape is achieved. CNC stands for Computer Numerical Control, meaning computer software is used to control the movement and operation of machine tools. These CNC machine tools include machining centers, turn-mill centers, wire electrical discharge machines (EDMs), thread-cutting machines, and more. Currently, the vast majority of machine shops utilize CNC machining technology. Through programming, the positional coordinates of the workpiece in a Cartesian coordinate system (X, Y, Z axes) are converted into program code. CNC machines recognize and interpret this code to control their axes, automatically removing material as needed to produce the finished workpiece. CNC machines process workpieces in a continuous manner, making them suitable for high-volume production and workpieces with complex shapes.

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Nov04

12 Different Casting Processes

Casting is a manufacturing process that typically involves introducing a material into a mold with a cavity of the desired shape, followed by solidification. The solidified part is called a casting. Through a rigorous historical development process, casting technology has continuously evolved, with its earliest records dating back to 3200 BCE. With the advancement of science and technology and the vigorous development of various industries, casting processes have been continuously expanded, leading to the development of various materials, process-specific castings, and methods suitable for different industries. It plays a crucial role in the automotive industry, aerospace field, machinery manufacturing industry, and construction industry.

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Nov03

Common Sand Types Used in Sand Casting

Over the years, Zhaoyuqi Company has encountered numerous unique challenges. One particularly memorable example occurred in the early stages of our attempts to customize small gearbox housings. The customer required complex details to be integrated into the finished castings, while the final products also needed to withstand significant wear and tear. We selected a sand mixture whose properties addressed the tolerance issues in the design. Though the task was complex, leveraging our experience with different sand types allowed us to turn potential risks into a success story— the delivered parts exceeded the customer’s expectations. This early project underscored the importance of selecting the right sand type for each casting, reminding us that a single sand type rarely meets all requirements.

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Oct31

What is Precision Casting? How Do We Apply It?

We may be relatively unfamiliar with the term "precision casting" because it is not easy for us to witness its production process. However, we are surely not unfamiliar with its finished products—such products can be found everywhere, as these mechanical products are used in various application fields. Therefore, we can say that its application forms a relatively complete and integrated system.

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