Technical Brief

—Diecasting is a precision casting method that utilizes high pressure to force molten metal into intricately shaped molds. It is particularly suited for mass production of thin-walled castings made of non-ferrous metals and represents a crucial manufacturing process in modern industrial production. With the trend of lightweighting and integration in new energy vehicle frames, diecasting continues to advance towards larger tonnage, heralding the era of big diecasting.

—Aluminum is the most common material. Such castings are widely used in the automotive industry. Additionally, lighter magnesium is also relatively common.

—Molten metal for casting is mechanically pressed into castings at very high pressure and speed. To facilitate easy separation of the casting from the mold and to control surface quality, a separating medium is used to spray onto the mold. In some cases, additional lubrication of the mold is required. When the molten metal is poured in, the separating medium volatizes due to heat, partially burns, and rises as smoke.

—This is where Tenzon's technology comes into play, efficiently capturing and separating these fumes.

—Based on the layout of the die-casting workshop production lines and environmental protection requirements of customers, there are two options for die-casting fume treatment: centralized collection and purification, and stand-alone purification. The former typically places the purification equipment outdoors with chimney emissions, while the latter generally sets up a steel platform on the die-casting machine to install high-efficiency purification (more often using wet electrostatic precipitators) for unorganized indoor emissions. Both options have their respective advantages and disadvantages, and it is recommended to consider and determine based on the actual situation comprehensively.

Centralized Collection and Purification

Centralized System - Multiple Die-Casting Machines Using One Separator (Airflow Capacity Up to 180,000 m³/h)

—Advantages: Lower investment cost; low maintenance;

—Disadvantages: Despite automatic frequency conversion operation, the energy consumption during operation is still relatively high; and the collection ductwork is bulky.

For centralized purification systems, Tenzon offers three solutions based on operating conditions utilizing its filtration technology:

Wet electrostatic precipitator (TESP), oil mist collector (EMC), and Venturi wet dust scrubber (VTDS).

Stand-alone Purification

Stand-alone System - Each die-casting machine is equipped with one separator (airflow capacity of 1,000 – 60,000 m³/h).

—Advantages: Each system operates independently; lower energy consumption and operating costs.

—Disadvantage: Higher investment cost.

For stand-alone purification systems, Tenzon offers two solutions:

Wet electrostatic precipitator (TESP) and oil mist collector (EMC).

Applications and Related Cases

It can treat organic waste gases such as benzenes, ketones, alcohols, ethers, alkanes, and their mixtures;
It is mainly used for the purification of harmful waste gases generated in chemical, machinery, electronics, electrical appliances, coating, shoemaking, rubber, plastic, printing, and various industrial workshops.

Tianjin Jinghengda Metal Heat Treatment Co., Ltd. has three box furnace heat treatment lines in its heat treatment workshop, including five multifunction furnaces (with one reserved interface), four tempering furnaces, and two air-cooled platforms. Waste gas capture and treatment are required for these facilities.

A metal heat treatment company in Tianjin has three box furnace heat treatment lines in its heat treatment workshop, including five multifunction furnaces (with one interface reserved), four tempering furnaces, and two air-cooled platforms. Waste gas capture and treatment are needed for these facilities.

This equipment company, as a modern enterprise integrating R&D and manufacturing, promoted strategic transformation, management reform, and deep integration of informatization and industrialization, forming a sustainable, benign, and high-speed enterprise development model.

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