SU1291282A1 - Apparatus for filling moulds on conveyer - Google Patents

Abstract

The invention relates to foundry and, in particular, can be used to make critical castings from heat-resistant 5,. easily oxidized alloys in a vacuum or in a protective gas environment during the pouring of molds on the conveyor. The aim of the invention is to increase productivity by simultaneously and independently filling out ftaZ, eliminating several different mass castings, controlling the flow rate and regulating the pouring time. On the flask with several ceramic molds, a casting bowl 6 is placed in which a ceramic float and a measured dose of blanks are placed. When the flask moves along the conveyor of the smelting-casting unit, the blanks melt and the float pops up. The melt fills the inlet ends of the siphon channels 10 - 13. At the pouring point, the stop sinks a float (not shown), the level of the melt in the bowl rises and simultaneous filling of the forms begins. The time of filling the form is determined by the level of the input end of the channel in the chat h, h, h, h .. The filling speed depends on the level of the output end of the channel, p, n, P4 The proposed device provides simultaneous, adjustable and independent filling of several forms for castings of various mass g 3 sludge. A2L. (L; O yu 00 N9

Description

112

The invention relates to foundry and, in particular, can be used to make critical castings from heat-resistant or easily acidic alloys in vacuum or in protective medium. gases when filling forms on the conveyor

The aim of the invention is to increase productivity by simultaneously and independently filling several different mass castings.

FIG. 2 shows the general scheme of the casting cup and flask; FIG. 2 is a section A-A in FIG. FIG. 3 is a section BB in FIG. 2,

A casting bowl 6 with a float 7 and a measuring billet 8 in the melting volume 9 is installed on the flask with ceramic shells 2–5 in the filler or without a filler. mi ceramic shells 2-5 (Fig, 2),

The bends of the O-3 channels are located at the same level (FIG. 3) and above the level of the molten metal with a free-floating float 7. The entrances of the channels into the melting volume are located at different levels h, h, L. and h. The larger the mass casting, the closer to the bottom of the melting volume 9 is the inlet of the channel, the more the casting time and the mass of the melt being poured, all other things being equal, the output ends of the siphon channels are also located at different levels due to the increase in the grooves 14 - 17, The magnitude of the metal of the Gatic head, which determines the speed and flow rate during pouring, is variable in time.

Its average value for each of the forms is equal (FIG. 3)

hn) + (h, l - hn) 2

the height of the melt level at the start of pouring from the bottom of the bowl;

the height of the output end of the channel from the bottom of the bowl; the height of the input end of the channel from the bottom of the bowl. manner of metallost

head and, therefore.

five

0

five

The speed and flow rate of the metal when filling the mold are determined by the heights of the inlet and outlet end of the channel from the bottom of the bowl.

The proposed device works as follows.

A casting bowl 6 is placed on the flask 1 with ceramic shells 2-5, in the melting volume 9 of which a ceramic float 7 and a measured dose of metal in the form of a measured billet or foundry waste and scrap are placed. As the flask 1 moves with the bowl 6 on the conveyor of the melting-casting unit, the metal melts and the float 7 floats. The melt in addition to the melting volume 9 fills the input ends of the channels 10-13 to a height not exceeding the lower section of the knees of the channels. the float 7, while the level of the melt in the melting volume 9 and the knee-shaped channels 10-13 increases. The increase in the melt level in all the channels occurs simultaneously, all four siphons are simultaneously turned on and the pouring of four forms begins, during which the level of the melt in the melting volume 9 decreases. When it reaches any of the inlet ends of the channels 10-13, the flow through the channel is stopped. The higher the input end of the channel from the bottom of the bowl 6, the less metal will flow through the channel and the smaller the casting can be filled. The filling rate, depending on the geometry of the casting, can be changed by the height of the grooves 14-17 in the bottom of the bowl.

The advantages of the proposed device are to achieve the possibility of simultaneous controlled independent filling of several molds for castings of different weights, ensuring a high stability of the casting process, the possibility of remelting scrap and sprues directly into shaped castings, mines the manufacture of dimensional blanks.

Claims (1)

Invention Formula  The device for pouring molds on the conveyor, containing a casting cup with a filling siphon channel in the side wall and a float, as well as an emphasis in the filling area, is distinguished 0 five 0 five Now, in order to increase productivity due to the simultaneous and independent filling of several different mass castings, up to 2912 824 are made in the casting cup Additional siphon channels, while the input and output ends of the siphon channels are located at different levels from the bottom of the bowl, and the knees of the siphons are at the same level. / 7 Editor I. Shulla Compiled by Mayorov Tehred I.Popovich Proofreader L, Patay Order 78/13 Draw 741 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, st. Design,. four Fig.d