SU583833A1 - Three-layer billet for tube pressing - Google Patents

Description

hz The core thickness is equal to the width of the collar of both the outer and inner shells. The shells are in contact with the core at its conical surfaces and ends.

The manufacture, assembly and pressing of the preform is carried out as follows.

Made of steel X18H10T internal | outside on the shell in the form of thick-walled pipes. The formation of the shoulders at the ends of the nasher junction shells (tubes) of the ectwalt by any 1 star method, was pressed into the distribution with the formation of taper and measured at the ends of the shells.

The heartworm obtained from titanium VT1-0 3 with its base is put on the inner casing 4 until it touches the collet 5 of the casing 4. Then the outer casing 1 is put on the core 3 until the end of the core touches the collet 2 of the sheath 1. Preparation of the flange 2 having the | The 0 end of the end face, defining the shape of the angle of the entry cone, is placed on the matrix 6 located on the container 7 and the needle 8 is inserted into the internal cavity of the workpiece.

In assembled form, shell 4 is protruding above ob.lochka 1 by lii value, oben.poch 1 above Hii / ixiiiiM butt () bo; g () hkn 4 by magnitude l.z.

The preform is assembled with minimal gaps and is heated to 850-900 ° C.

From the beginning of the expiration of the multilayer preform, it is repressively produced in a coiteiner, during which shells are displaced along the conical surfaces of the core and all-round sealing is applied to the cores. In this case, the ends of the shells are aligned. The billet acquires properties approaching those of a monolith, flat billet. Next, a multi-layer preform 150 mm long with a diameter of 44 x 64 mm is pressed on a vertical hydraulic press with a force of 600 tons through a coic matrix. The speed of movement of the press-crusher is up to 150 mm / s. Pressing workpieces with draws of 8–15 is possible, and at a temperature not lower than 850 ° C. Irie more

low heating temperatures or higher stretch pressings;, H1, it is impossible, since the necessary force exceeds the nominal pressing force. The pressed three-layered pipes but the slides of the slice have a fairly uniform distribution, and oTHoniCi-nie of the cross-sectional sections of C1) disagree with the calculated one. Three-layer forgings {steel XlSiilOT - titanium

BT1-0 -Steel XISHIOT) are a non-constructive construct1 :() || 11 ITS can not find use in the national economy either. It is possible to make a three-layer production of practically any metal from the proposed three-layer billet.

The proposed design of the workpiece ensures that the layers of the workpiece are harvested at the pacnpeccojjKH stage and produce three-layer pipes with uniform cross-section and

the length of the layers.

F i)) m u l and n 3 o b r t e n n

Three-layered billet for pipe pressing, E and E as interfacing with each other along the conical surfaces of the hollow core, the inner and outer shells, characterized in that in order to improve the quality of the tubes due to the increased uniformity of the distribution of the shells and the core and to ensure reliable adhesion between them , the inner shell is made with the outer one, and the outer shell with the inner collar, nmeyuni M chiriku, equal to the width of the core, and, in this case, with the opposite torny and hearty hearts, is installed between the pnmi, and p ssto of each shoulder to a coup gayuschegos Preprint sootvetstvuyuN1 end, it is not large shell thickness of the core,

Source Formation,

pri thousand in the examination

1. Koroms V.K.n. Gnldengorn MS. Fundamentals of the production technology of multilayer metals, M., 1970, “Metallurgists, p. 43, fig. 12.