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Raw material selection and preliminary screening
Nantong Rongxin Electrical Control Technology Co., Ltd. always regards the selection of high-quality raw materials as its top priority in the process of manufacturing tungsten discharge needles. The company selects high-purity tungsten powder as the core raw material, which is crucial to ensure the purity and performance stability of the final product. The selection of tungsten powder must not only meet specific purity standards, but also comprehensively consider multiple factors such as particle size distribution, particle shape and surface state. These parameters directly affect the fluidity, compressibility and sintering performance of the powder in the subsequent processing stage.
In the preliminary screening stage, Nantong Rongxin uses advanced screening equipment and technology to strictly grade the tungsten powder. Through precise screening technology, it can effectively remove oversized or undersized particles, ensure the uniformity of tungsten powder particle size distribution, and lay a solid foundation for subsequent processing. At the same time, the company strictly monitors key indicators such as water content and oxygen content of tungsten powder to ensure that it meets the requirements of subsequent processes.
Powder mixing and pretreatment
After preliminary screening, the tungsten powder enters the mixing and pretreatment stage. Nantong Rongxin uses advanced powder mixing equipment and technology to evenly mix tungsten powder with appropriate amounts of additives (such as molding agents, lubricants, sintering aids, etc.). The introduction of these additives is intended to improve the compaction and sintering properties of tungsten powder, thereby increasing the density and mechanical strength of the final product.
During the mixing process, Nantong Rongxin strictly controls the mixing time and speed to ensure that the tungsten powder and additives are fully mixed and evenly distributed. The mixed powder is also subject to strict testing and evaluation to ensure that it meets the requirements of subsequent processes and ensures product consistency and reliability.
Pressing and pretreatment
The mixed tungsten powder then enters the pressing and forming stage. Nantong Rongxin uses high-precision molds and pressing equipment to press the tungsten powder into preliminary tungsten billets. During the pressing process, the company strictly controls key parameters such as pressing pressure, pressing speed and holding time to ensure that the density and shape of the tungsten billet meet the requirements of subsequent processing.
After the pressing and forming, the tungsten billet needs to be pretreated to eliminate internal stress and defects. Nantong Rongxin uses heat treatment technology to anneal the tungsten billet. During the annealing process, by precisely controlling parameters such as heating temperature, holding time and cooling rate, the stress and defects inside the tungsten blank can be effectively released and eliminated, thereby significantly improving its mechanical properties and processing performance.
