SU897396A1

SU897396A1 - Device for compacting articles from powder

Info

Publication number: SU897396A1
Application number: SU792824906A
Authority: SU
Inventors: Юлия Алексеевна Саморокова; Евгений Кузьмич Плаксин; Леонид Прокофьевич Вовк; Борис Николаевич Волков; Юрий Витальевич Клепцов; Виктор Васильевич Глинских
Original assignee: Кировградский завод твердых сплавов
Priority date: 1979-10-03
Filing date: 1979-10-03
Publication date: 1982-01-15

Description

СЗ) УСТРОЙСТВО дл ПРЕССОВАНИЯ ИЗДЕЛИЙ ИЗ ПОРОШКАSZ) DEVICE FOR PRESSING PRODUCTS OF POWDER

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Изобретение относитс к порошковой металлургии, в частности к устройствам дл прессовани изделий из металлических порошков, а также из порошков со знауительным содержанием неметаллических компонентов , и может быть использовано в нефт ной промышленности, например, при изготовлении долот с любой формой твердосплавных зубков, в угольной промышленности, например, при изготовлении любой формы твердосплавных кернов.The invention relates to powder metallurgy, in particular, devices for compressing articles from metal powders, as well as from powders with a significant content of non-metallic components, and can be used in the petroleum industry, for example, in the manufacture of bits with any form of carbide inserts, in the coal industry For example, in the manufacture of any form of carbide cores.

Известно устройство дл прессовани изделий из порошка, содержащее матрицу, нижний и верхний пуансоны, перемещающиес внутри матрицы 11.A device for compressing articles from powder is known, which comprises a die, lower and upper punches moving inside the die 11.

Недостатком известного устройства вл етс невозможность получени из- делий сложной конфигурации с обеспе- чеиием их качества, так как формова- ние осуществл ют в зоне матрицы.A disadvantage of the known device is the impossibility of obtaining items of complex configuration with the provision of their quality, since the molding is carried out in the area of the matrix.

Наиболее близким к предлагаемому вл етс устройство дл прессовани Closest to the present invention is a device for pressing

изделий из порошка, содержащее матрицу , установленный внутри нее нижний пуансон и верхний пуансон, примыкающий к торцу матрицы. Верхний пуансон выполнен с глухой формующей полостью , а также с конической наружной поверхностью, снабжен внешним кольцевым элементом, охватывающим его наружную поверхность, и установлен с возможностью осевого перемеще10 ни внутри элемента 121.products from powder, containing a matrix, installed inside it a lower punch and an upper punch, adjacent to the end of the die. The upper punch is made with a deaf forming cavity, as well as with a conical outer surface, provided with an outer annular element enclosing its outer surface, and is mounted with the possibility of axial movement 10 or inside the element 121.

В этом устройстве осевое перемещение кольцевого элемента.относительно полого пуансона не обеспечивает In this device, the axial movement of the ring element. Relatively hollow punch does not provide

15 жесткости конструкции и вызывает износ трущихс поверхностей, ведущий к нарушению геометрических размеров спрессованных изделий, что снижает их качество. Кроме того, устройство 15 stiffness of the structure and causes wear of the rubbing surfaces, leading to a violation of the geometrical dimensions of the pressed products, which reduces their quality. In addition, the device

20 сложно в изготовлении.20 difficult to manufacture.

Claims

The purpose of the invention is to simplify the design and improve the quality of products by increasing the stiffness. 3 In order to achieve this goal, the upper punch is made composite in the form of a clip and an insert rigidly connected with it, the latter being made with a blind forming cavity. To increase the wear resistance of the upper punch insert is made of hard alloy. The drawing shows a device for pressing products from powder, a general view. The device contains a matrix 1, the lower punch 2, installed inside the three matrices 1, the upper punch 3 made composite of the cage k and the internal carbide insert 5 is rigidly attached to the cage i. In the carbide insert 5, a molded cavity is formed. The upper punch is adjacent to the face of the die. The clip k is attached to a pecc plate (not shown). The device works the next time. Powder from the dosing unit (not shown is fed into the channel of the matrix 1, then the upper punch 3 is brought close to its end, and the powder is compacted by the lower punch 2. The use of an upper punch containing a carbide insert and a solidly shaped cavity inside it allows to eliminate the friction surfaces and reduce their wear, which affects the geometrical dimensions of the finished products, which improves their quality. This also ensures sufficient rigidity of the structure with a rather simple implementation. Improving the quality of compressed products by 1.2 times. Claim 1. A device for pressing products from powder, containing a matrix, a lower punch installed inside it and an upper punch, attached (leading to the end of the matrix, characterized in that, in order to simplify the design and improving the quality of products by increasing the stiffness, the upper punch is made composite in the form of a clip and a rigidly connected insert, the latter being made with a hollow forming cavity. 2. The device according to claim 1, about tl and which is so that, in order to improve the wear resistance of the upper punch, the insert is made of hard alloy. Sources of information taken into account at. 1.Radomysylsky I.D., Pechenko Vsky, L.L., Serdyuk G.G. Molds for powder metallurgy. Kiev, Technique, 1970, p.66, fig.6.

2. USSR Author's Certificate No. 582907, cl. B 22 F 3/02, 1975.

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