CS198063B1 - Permanent mould for the quick hardening alloys - Google Patents

Description

The present invention relates to an ingot mold for rapidly solidifying alloys, in particular an aluminum alloy, the lateral inlet of which leads to a riser and the riser cross-section lies longitudinally in the die plane of the ingot mold.

In the hitherto known fast-setting alloy dies, which consist of mold cavity parts with a mold cavity and a lateral inlet leading to the riser, the passage of the mold cavity into the riser is closed by a removable plug. in relation to the cross section of the riser, relatively large. The amount of heat absorbed by this removable plug is also relatively large.

The aforementioned drawback is solved by a mold for rapidly solidifying alloys, in particular an aluminum alloy consisting of two lower parts having a shaped cavity and a lateral inlet leading to the risers and two upper rotating parts with a riser according to the invention. In the lower part of the ingot mold or in the upper part of the ingot mold, there is a circular centering recess in which the centering collar of the second two parts of the mold is rotatably engaged, formed on the contact surface with the first two parts. Upon rotation of the upper mold parts of the ingot mold, the neck according to the riser drawing in the upper mold part of the ingot mold is closed by the upper contact surface of the lower mold parts and the mouth of the shaped cavity in the lower mold part into the riser is closed by the lower contact surface of the upper mold parts.

Since the passive contact surface with which the rim of the swivel top is closed from below, according to the drawing, with the elongated cross-section of the riser is smaller than the surface of the removable plug flowing through the cast alloy and the heat absorbed by the rim The heat loss of the poured alloy into the ingot mold is also reduced in the region of the riser neck where it is desirable. A further advantage is, especially if the riser in its neck is articulated and the removable plug would have to follow this shape substantially simpler shape of the closing sheet.

198 06-3

198 063

By reducing heat loss, eliminating even removable plugs, heat storage efficiency is increased from the alloy poured into the ingot mold in the riser walls and in the ingot mold wall in the riser neck region of the drawing.

1 shows an example of a mold for fast setting alloys, in particular of an aluminum alloy, according to the invention, viewed in a separating plane. Fig. 2 shows the same ingot mold with the rotatable upper part rotated in plan view.

In the lower mold part 1 there is a mold cavity 2, to which cuts 4 of the mold cavity 2 connect the lateral inlet 3 leading to the riser 8. In the contact surface x of the upper swivel part 6 and the lower mold 1 is in the axis of rotation j of the upper swivel part 6 in the lower The side inlet 3 extends through the contact surface x at the location of the axis of rotation 2 of the upper pivoting part 6 and with its orifice 10 connects to the boss 8, which is in the rotated position of the upper swivel part 6 closed in its neck 9 by the upper contact surface of the lower mold part 1. The opening of the shaped cavity 2 into the riser 8 is closed by the lower contact surface of the upper swivel part 6 of the mold. The ingot mold parts 1 are mutually aligned pins 11 for centering the ingot mold parts 1. Similarly, the upper pivoting parts 6 are centered by pins 12 for centering the relative position of the upper pivoting parts 6.

Process for casting fast-setting alloys into the ingot mold according to the invention. The mold is heated to the working temperature. By turning the upper swivel part 6, the mold cavity 2 in the boss 8 and the neck 9 of the boss 8 are separated and closed by the contact surfaces of the upper swivel part 6 and the lower part 1. 8. When the mold cavity 2 is filled with a rapidly solidifying alloy, during the next filling of the boss 8, the neck ring 9 of the feed 8 and the mouth of the mold cavity 2 are opened and connected to each other.

The quick-setting alloy die according to the invention, the side inlet 3 of which leads to the riser 8, by its arrangement provides the advantages of the side inlet, a gradually decreasing cooling of the alloy coming into the mold cavity 3 and gradually increasing amount of accumulated heat in the riser walls 8 and in the neck region 9 during the filling of the ingot mold by the alloy poured by the riser 8. This determines both the controlled solidification of the casting from the bottom up and the preheating of the riser by the heat of the alloy itself into the ingot mold.

Claims (12)

Molds for fast setting alloys, in particular aluminum alloys, consisting of two lower cavity portions with a side inlet leading to the riser and two upper swivel portions of the riser portions, characterized in that in the axis of rotation (y) of the upper swivel unit (6) (in the contact area (x) of the lower partsAA chillies with the upper swivel parts / 6) the molds are either in the lower swivel parts (1) or in the upper swivel parts (6) in the mold a circular centering recess (5) 7 / second part of the two molds, 3), when the upper pivoting parts (6) are rotated, the neck (9) of the riser (8) is closed by the upper contact surface (x) of the lower parts closed by the lower contact surface (x) of the upper bearing parts. List of reference marks 1 lower mold part 2 shaped cavity in the lower mold part 3 side inlet 4 cuts a shaped cavity for the side inlet 5 shows a central recess in the lower mold part 6 the upper part of the ingot mold 7 shows a centering collar of the upper swivel part 8 nálitek 9 neck risers 10 shows the outflow of the side inlet into the riser 11 pins for centering the lower parts of the mold 12 dowels for centering the upper swivel parts of the ingot mold · x contact surface of the lower swivel part and the upper swivel part y axis of rotation of the upper swivel part 198 083 Fig. 2 OPERATION OF THE DESCRIPTION OF THE INVENTION TO COPYRIGHT CERTIFICATE No. 198 063 Int. ClZ B22D 15/00 B 22 C 9/08 In the description of the invention for the copyright certificate ¢. 198 063 Dying date improperly printed.