Production of tungsten wire
Are you interested in the production of tungsten wire and its alloys in inches from the supplier company AvecGlob? Here you will find interesting information on this topic.
Preparation of tungsten powder
The creation of a tungsten wire is a complex process that must be carefully controlled to ensure the proper chemical composition of the material, as well as the proper physical properties of the finished wire.
Obtaining tungsten from ore can not be carried out by traditional melting, since tungsten has the highest melting point. Tungsten is extracted from the ore through a series of chemical reactions. The accuracy of the process parameters varies depending on the composition of the ore. The original ore is crushed, then sintered and / or passes through various chemical reactions. Then follows washing, after which ammonium paratungstate is obtained, and already from it — tungsten oxide. Tungsten oxide can be sintered in an atmosphere of hydrogen to create a pure tungsten powder.
Stages of wire production
Tungsten powder is sieved and mixed. A binder can be added. The fixed amount of powder is weighed and loaded into a steel mold, which is loaded into the press and is compacted into a compacted, but brittle bar. It is placed in a refractory metal container and charged into a furnace with a hydrogen atmosphere. Under the influence of high temperature, the material is compacted to a density of about 60% — 70% of the total, with a small grain growth.
Complete sintering is due to the thermal action of the electric current. The heat generated by this current leads to the fact that the rod will be compacted from about 85% to 95% of the total density. In addition, tungsten crystals begin to form inside the core.
Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer in a wide range of wire of various diameters, which is obtained from tungsten or its alloys. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Finishing operations
The tungsten rod is now durable, but at room temperature — very fragile. It can be made more pliable by raising the temperature to 1200 ° C or even to 1500 ° C. At this temperature, the rod is passed through an extruding matrix that continuously and abundantly lubricates. For each pass, the degree of deformation of the rod does not exceed 12%. As a result, a fibrous structure is gradually created. After that, the semi-finished product is annealed.
Drawing — the final operation of obtaining tungsten wire. When drawing, the wire is lubricated and passed through a die made of tungsten carbide or diamond. The accuracy of drawing depends on the chemical composition of the semi-finished product and the end use of the wire. When the wire is stretched, the fibers again elongate and the tensile strength increases. Sometimes after drawing, tungsten wire undergoes repeated annealing.
Supplier — AvekGlob Company — offers to purchase various profiles of wire, which is made of tungsten and tungsten alloys. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.