PRODUCTION OF DRY POWDER COMPOSITES BASED ON SODIUM AND CALCIUM STEARATE

396 Volume 5, Issue 10: Special Issue (EJAR) ISSN: 2181-2020 MPHAPP THE 6TH INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “MODERN PHARMACEUTICS: ACTUAL PROBLEMS AND PROSPECTS” TASHKENT, OCTOBER 17, 2025 in-academy.uz PRODUCTION OF DRY POWDER COMPOSITES BASED ON SODIUM AND CALCIUM STEARATE Ermatov R.K. PhD student at NamSTU Namangan State Technical University e-mail: [email protected] (94) 157 2997 Doliyev. G.A Professor of the Department of Chemistry, NamSU, DSc. Zaripova. R.Sh Tashkent Pharmaceutical InstituteTashkent Pharmaceutical Institute https://doi.org/10.5281/zenodo.17339599 Relevance: One of the main tasks of the world industry is to provide the construction industry with new, high-quality products. The processing of metals, which perform an important function in the construction industry, is of great importance, that is, their production in various sizes. Therefore, it is necessary to process metals and prepare wires of various sizes from them, to study in more detail the composition of these wires and various physical and mechanical processes occurring on their surfaces, to search for opportunities for the widespread use of dry welding components used in the drawing and processing of metals. Therefore, it is important to develop effective methods for obtaining dry welding components and welding electrodes used in the drawing of metal wires based on local raw materials. Methods and techniques: A dry plaster composite containing 30% calcium stearate, 43% soap, 4% turpentine, 10% talc, 5% kaolin and 8% iron (III) oxide is obtained: First, calcium stearate is added to the reactor and gradually heated. In this process, it is important to ensure that the temperature does not exceed 170°C. When the calcium stearate is completely dissolved, soap powder is added to it and it is also completely dissolved. Then the remaining additives are added to the mass little by little, one by one, stirring vigorously. In this case, the added additional components are completely mixed with the liquid, forming a homogeneous system for 55-60 minutes. The product is cooled and begins to solidify in the form of a monolith. The resulting monolithic product is ground in a mortar and brought to a powder state. The most important indicator of a dry solder composite is its adhesion to the surface of the steel wire from which the welding electrode is made. To test this, a steel wire for a welding electrode with a cleaned surface is dipped into the powder product, i.e. the slush composite. It is then observed that the powder product adheres to the surface of the steel wire for the welding electrode, forming a thin layer. Results: The dry slurry composite obtained by the above method does not boil at high liquefaction temperatures, does not decompose, and does not solidify separately during stretching. The obtained technical results show that the prepared slurry oil is not hygroscopic and is a neutral substance, which increases the corrosion resistance of the stretched steel wire and stops the corrosion process on the surface of the steel wire. If the amount of kaolin added to the dry slurry composite is less than 4%, its corrosion properties decrease, and if the amount of kaolin is increased by more than 6%, its corrosion properties increase, and therefore this process is not advisable. If 4-6% talcomagnesite is added to the dry slurry composite, the softening temperature of the dry slurry composite increases by 10-15°C, and its antifriction properties improve. Conclusion: When the amount of talcomagnesite in the dry-cast composite is less than 4%, the hydrodynamic mode during wire stretching is not ensured, the amount of insoluble components in 397 Volume 5, Issue 10: Special Issue (EJAR) ISSN: 2181-2020 MPHAPP THE 6TH INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “MODERN PHARMACEUTICS: ACTUAL PROBLEMS AND PROSPECTS” TASHKENT, OCTOBER 17, 2025 in-academy.uz the finished dry-cast composite decreases, and it is not advisable to exceed the amount of talcomagnesite in the dry-cast composite by more than 6%.