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Lead die casting is a common metal die casting process that uses lead as raw material, injects lead liquid into the mold through high temperature and high pressure, and then cools and solidifies it into shape. This process is widely used in various industrial fields, covering industries such as automobile manufacturing, electronic equipment, construction, and aerospace.
Lead die casting has many advantages that make it the preferred process in the manufacturing industry. First of all, lead is a low melting point metal with excellent fluidity, which can easily fill molds with complex shapes. This enables lead die casting to produce high-precision and high-complexity products that meet customer requirements for details and quality.
Lead has good corrosion resistance and heat resistance, allowing lead die casting products to be used for a long time in harsh environments. This makes lead die casting widely used in fields such as automobiles and aerospace, especially those that need to withstand high temperatures and chemical erosion.

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Ningbo Yao Yuan Precision Technology Co., Ltd.
Ningbo Yao Yuan Precision Technology Co., Ltd. is China Lead Die Casting Manufacturers and Custom Lead Die Casting Factory. Yao Yuan is a ′Step by Step′ for die castings. The factory is in the unique position of being able to provide the customer with design and manufacture of tooling, die casting the component, machine finishing, surface treatment and delivering the product。 Yao Yuan was founded in 1994, for 30 years, it has provided unique solutions to its Tier One and OEM customers. Yao Yuan is located at Yuyao city, Ningbo, Zhejiang, China, which is North to Shanghai (the financial center of China), 180 Kilometers, and East to Ningbo Beilun Port (the biggest port in China), 60 Kilometer. The factory covers an area of 13000 square meters . In addition, there are more than 60 employees, including more than 6 technicians. Through aggressive research and development of new products, Yao Yuan have grown into manufacturer of die casting products fields in Asia with an annual output of over One thousand Tons of Products. Our products have distributed throughout China and exported to more than 20 foreign countries all over the world. Sincerely welcome friends from all over the world to negotiate cooperation with our company. Our service and quality will definitely satisfy you .
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The Process of Lead Die Casting

The process of lead die casting involves several precise steps that ensure the production of high-quality components suitable for a variety of industrial applications. Here’s a detailed expansion on each stage:
a)Mold Preparation: Mold preparation is a critical initial step in lead die casting. The mold, typically made from hardened steel, is meticulously designed to define the shape, dimensions, and surface finish of the final part. The mold cavity is created by machining two halves of the mold that fit together precisely. This cavity mirrors the shape of the desired part, including any complex geometries or internal features. The durability and dimensional stability of the mold are crucial to ensuring consistent part quality throughout the production run.
b)Melting and Injection: Once the mold is prepared, the lead alloy is melted in a furnace to a precise temperature suitable for injection. Lead alloys typically used in die casting contain additives such as tin, antimony, and copper to enhance properties like strength, hardness, and fluidity during casting. The molten lead is then injected into the mold cavity under high pressure. This pressure is applied using a hydraulic piston or plunger, which forces the molten metal into every intricate detail of the mold. The high injection pressure ensures that the lead fills the mold completely and uniformly, minimizing defects such as porosity or incomplete filling.
c)Cooling and Solidification: After injection, the molten lead rapidly cools and solidifies within the mold cavity. The cooling rate is carefully controlled to prevent internal stresses and ensure the dimensional accuracy of the finished part. Cooling channels integrated into the mold assist in dissipating heat efficiently, maintaining consistent cycle times for production. The solidification process transforms the molten lead into a solid metal part that retains the exact shape and features of the mold cavity. Proper cooling is crucial to achieving the desired mechanical properties and surface finish of the part.
d)Mold Opening and Ejection: Once the lead has solidified, the mold halves are separated to reveal the finished part. The mold opening process must be carefully executed to prevent damage to the part or mold surfaces. Ejector pins or mechanisms within the mold are employed to push the part out of the cavity gently. The ejection phase requires precision to ensure that the part is removed cleanly without deformation or damage to its critical features. The design and placement of ejector pins are critical considerations during mold design to facilitate smooth ejection and minimize cycle times.
e)Post-Casting Operations: After ejection, the lead die casting undergoes various post-casting operations to achieve final specifications. These may include trimming excess material (flash) from the part, surface finishing operations such as shot blasting or tumbling to improve aesthetics and remove imperfections, and heat treatment processes to enhance mechanical properties. Quality control checks are performed at each stage of post-casting operations to verify dimensional accuracy, surface quality, and material integrity.

Applications of Lead Die Casting Parts

Lead die casting parts find extensive applications across various industries due to their unique properties and manufacturing advantages.
a)Automotive Industry: In the automotive sector, lead die casting parts play critical roles in several components: Battery Terminals: Lead’s excellent electrical conductivity and corrosion resistance make it ideal for battery terminals in automotive batteries. Die-cast battery terminals ensure reliable electrical connections and durability under harsh operating conditions. Cable Connectors: Lead die casting is used to manufacture cable connectors that secure and maintain electrical connections in vehicles. These connectors ensure efficient transmission of power and signals across different automotive systems. Vibration Dampeners: Lead’s density and damping properties are utilized in the production of vibration dampeners. These components absorb vibrations and reduce noise, enhancing vehicle comfort and performance.
b)Electronics and Electrical Applications: Lead die casting parts are crucial in electronics and electrical applications where precision and reliability are paramount: Shielding Components: Lead is employed in die casting to produce shielding components that protect electronic devices from electromagnetic interference. These components ensure signal integrity and prevent external interference. Connectors and Housings: Lead die casting is used to manufacture connectors and housings for electronic devices and circuitry. These parts provide mechanical support, electrical connectivity, and protection against environmental factors such as moisture and dust.
c)Plumbing and Construction: Lead die casting finds applications in plumbing fixtures and construction materials due to its corrosion resistance and durability: Plumbing Fixtures: Lead is used in die casting to produce valves, fittings, and connectors for plumbing systems. These components withstand exposure to water, chemicals, and varying temperatures while maintaining tight seals and reliable performance. Building Materials: Lead die casting parts are utilized in building materials such as door and window hardware, where their strength and corrosion resistance ensure longevity and reliability in architectural applications.
d)Other Industrial Uses: Lead die casting parts are also employed in various industrial applications: Medical Equipment: Lead is used in the production of radiation shielding components for medical equipment such as X-ray machines and CT scanners. These components protect medical personnel and patients from harmful radiation exposure. Sporting Goods: Lead die casting is utilized in the manufacture of sporting goods such as fishing weights and diving weights. The density of lead provides precise weight distribution and stability in these applications.

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