Die casting is a Aluminium or Zinc metal casting process that is characterized by forcing nolten metal under high pressure into a die mold cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mould during the process. Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminium, magnesium, lead, pewter, and tin-based alloys. Depending on the type of metal being cast, a hot- or cold-chamber machine is used.
The casting equipment and the metal dies represent large capital costs and this tends to limit the process to high-volume production. Manufacture of parts using die casting is relatively simple, involving only four main steps, which keeps the incremental cost per item low. It is especially suited for a large quantity of small- to medium-sized castings, which is why die casting produces more castings than any other casting process. Die castings are characterized by a very good surface finish (by casting standards) and dimensional consistency.
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China is a major producer of mineral and inorganic salt processing equipment in the world. However, the drying of ore powder and inorganic salts, especially the drying of barium sulfate, uses rotary kiln dryer systems for drying. The energy consumption of air blowing and induced air systems Larger. The traditional drying system uses coal-fired flue gas as a heat source, which increases the cost of burning coal and the cost of post-processing of flue gas. The equipment investment and operating costs are high, and the environmental pollution is large. In recent years, with the advancement of technology, some companies have used two-stage paddles and rotary flash dryers to dry barium sulfate. However, there are still problems such as large power consumption and insufficient heat efficiency.
The double paddle-disc type combined drying device improves the single drying ability based on the advantages of the traditional disc type continuous drier. The energy consumption cost for drying the same quality material is 1/3 of the energy consumption cost for using other air flow drying. 1/5. Due to the closed operation, the gas consumption is small and the dust is low. Therefore, the dry powdery material does not diffuse in the air, thereby eliminating the dust pollution to the environment and on-site personnel, and making the working environment and exhaust gas of the drying device meet the environmental protection requirements.
With the development of China's economy, the demand for drying equipment is also increasing. The development of drying equipment in China will certainly bring new opportunities for the development of the domestic chemical, food, wood and many other industries.
Shijiazhuang Gongda drying equipment leading domestic
The double paddle-plate type combined drying device independently developed by Shijiazhuang Gongda Chemical Equipment Co., Ltd. was recently awarded the bid for the international bid of 40,000 tons of barium sulfate project in Hebei Xinji Chemical Industry Group Co., Ltd. The device's comprehensive technical level has reached the domestic leading level, and some devices have reached the international advanced level.