SU799886A1

SU799886A1 - Method of producing hydro extruded articles

Info

Publication number: SU799886A1
Application number: SU782629500A
Authority: SU
Inventors: Юрий Федорович Черный; Валентин Иванович Косяк; Вячеслав Селиверстович Ковико; Евгений Николаевич Высоцкий
Original assignee: Донецкий Физико-Техническийинститут; Киевский политехнический институт
Priority date: 1978-06-19
Filing date: 1978-06-19
Publication date: 1981-01-30

Description

1one

Изобретение относитс к обработке металлов давлением, а точнее, к получению гидроэкструдированных изделий .The invention relates to the processing of metals by pressure, and more specifically to the production of hydro-extruded products.

Известен способ изготовлени гидроэкструдированнык изделий путем получени заготовки и последующего выдавливани ее давлением сжатой жидкости из контейнера через две последовательно размещенные матрицы с обеспечением обжима материала заготовки между матрицами .A known method of manufacturing hydro-extruded products is by obtaining a preform and then squeezing it out by pressing compressed liquid from the container through two successively placed dies, ensuring the workpiece material is crimped between the dies.

Однако производительность этого способа при производстве кратномерных штучных заготовок мала.However, the performance of this method in the production of multi-piece blanks is small.

Цель изобретени - повышение производительности процесса при уменьшении длины изготавливаемых изделий Дл достижени этой цели заготовку получают из длинномерного прутка на котором через шаг, кратный длине, единичного издели , выполн ют утонени .The purpose of the invention is to increase the productivity of the process while reducing the length of the manufactured products. To achieve this goal, the workpiece is obtained from a long bar in which, through a step that is a multiple of the length of a single product, thinning is performed.

На чертеже показан инструмент дл реализации предлагаемого способа .The drawing shows a tool for implementing the proposed method.

Инструмент содержит контейнер 1, в котором установлена рабоча матрица 2 и калибрующа матрица 3. Рабоча матрица 2 и калибрующа матрица 3 образуют мезвду собой объем 4, соединенный каналом 5 с внутренней полостью контейнера, заполненной жидкостью. Жидкость сжимаетс посредством пуансона 6.The tool contains a container 1, in which the working matrix 2 and the calibrating matrix 3 are installed. The working matrix 2 and the calibrating matrix 3 form a space with a volume 4 connected by a channel 5 with the internal cavity of the container filled with liquid. The fluid is compressed by means of the punch 6.

П р и мер. Дл реализации способа исходную заготовку длиной 100 мм и )2f 26 мм из стали Р6МЗ дл получени утонений надрезают через каждые Pr and measures. For the implementation of the method, the initial billet 100 mm long and) 2f 26 mm from steel R6MZ is cut through every

0 10 мм резцом, заточенным под углом ЗО на глубину 3 мм и выдавливают жидкостью при давлении 16000 атм через матрицу с круглым отверстием 0 20 мм. В тот момент, когда надре5 занное деформированное сечение достигает объема 4, заполненного жидкостью под давлением 16000 атм, надрез заполн етс жидкостью высокого давлени , нагружак цей экструдируемую 0 10 mm with a chisel sharpened at an angle of the DZ to a depth of 3 mm and squeezed out with liquid at a pressure of 16000 atm through a matrix with a round hole of 0–20 mm. At that moment, when the notched deformed section reaches a volume of 4, filled with a liquid under a pressure of 16000 atm, the notch is filled with a high pressure liquid, the load extruded

Claims

0 the workpiece on the surface of the tension cutter stretch stresses, exceeding the resistance of the material to tearing. In this case, the hydropressed billet is destroyed in the plane of the over5 cut and hangs in the calibrating matrix 3. The part of the hydropressed billet remaining in the working matrix moves forward, closing the opening E of the calibrating matrix 3. The pressure in the container rises again to a value sufficient for the deformed material to expire. When the next notch reaches volume 4, the next billet is separated, etc. The magnitude of the pressure, the fluid, the vapor of the notch, the mechanical properties of the material being processed and the cross-sectional area of the product are associated with COOT, where K is the stress concentration ratio of the notch; P - fluid pressure; the area of the projection of the notch on the plane perpendicular to the axis of the workpiece; fj. - the area of the obtained billet in the plane of the bg bg -th limit, the strength of the deformable material. Thus, as a result of the implementation of the proposed method of hydraulic pressing, short-dimensional workpieces (products) can be obtained without success in the process of obtaining products from lengthy original blanks without an additional cutting operation, which increases the productivity of production of blanks by three times and completely eliminates metal waste into the chips. The invention The method of manufacturing hydroextruded | 1st products by obtaining a billet and then squeezing its pressure from a compressed liquid from a container through dye successively placed matrices to ensure compression of the billet material between dies, characterized in that, in order to increase the productivity of the process in the manufacture of short-billets, the billet is obtained from a long bar, in which, through a step that is a multiple of the length of a single product, thinning is performed. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 455789, cl. B 21 J 5/04, 1972.