SU876285A1

SU876285A1 - Casting mould for casting cooled elements

Info

Publication number: SU876285A1
Application number: SU792880512A
Authority: SU
Inventors: Кирилл Адольфович Берман; Виталий Антонович Шкода; Григорий Яковлевич Кирзон; Петр Степанович Заболоцкий; Виктор Иванович Пахарь; Виктор Кондратьевич Сельков
Original assignee: Производственное Объединение "Ждановтяжмаш"
Priority date: 1979-12-17
Filing date: 1979-12-17
Publication date: 1981-10-30

Description

(54) ЛИТЕЙНАЯ ФОРМА ДЛЯ ОТЛИВКИ ОХЛАЖДАЕМЫХ ЭЛЕМЕНТОВ(54) CASTING FORM FOR CASTING COOLED ELEMENTS

1one

Изобретение относитс к спецэлектрометаллургии и направлено на совершенствование изготовлени кристаллизаторов дл печей электрошлакового переплава (ЭШП).The invention relates to special electrometallurgy and is aimed at improving the manufacture of crystallizers for electroslag remelting furnaces (ESR).

Известна литейна форма дл получени отливок, армированных трубками, содержаща опоку, литниковую систему и армирующие трубки с фиксирующими элементами в виде подставок и втулок, установленных на концах армирующих трубок 1.A known casting mold for producing castings reinforced with pipes, comprising a flask, a gating system and reinforcing pipes with locking elements in the form of supports and bushings installed at the ends of the reinforcing pipes 1.

Наиболее близким техническим решением к предлагаемому изобретению вл етс литейна форма дл получени отливок со сквозными каналами, содержаща полуформы с литниковой системой и армирующие трубки, установленные на металлических стерзкн хфиксаторах 2.The closest technical solution to the present invention is a casting mold for producing castings with through channels, comprising mold halves with a gating system and reinforcing tubes mounted on metal cores 2.

Недостатком этого изобретени вл етс сложность сборки литейной формы и возможность прогара армирующей трубки, а также сложность очистки внутренней поверхности армирующих трубок от пригара, так как залитое отверстие не позволит циркулировать охлаждающей жидкости.The disadvantage of this invention is the complexity of the assembly of the casting mold and the possibility of burnout of the reinforcing tube, as well as the difficulty of cleaning the inner surface of the reinforcing tubes from the burn, since the filled hole will not allow the coolant to circulate.

Не обеспечиваетс равномерное заполнение металлом заливаемой формыUniform metal filling of the cast mold is not provided.

из-за большого количества преп тствий заливаемому металлу в виде закладных деталей. Недостатком вл етс также сложность конструкции литейной формы, повышающа ее стоимость изготовлени и снижающа надежность в эксплуатации.due to the large number of obstacles to the poured metal in the form of embedded parts. The disadvantage is also the complexity of the design of the mold, which increases its manufacturing cost and reduces reliability in operation.

. Цель изобретени - упрощение сборки литейной формы и повышение качества отливок.. The purpose of the invention is to simplify the assembly of the casting mold and improve the quality of the castings.

Указанна цель достигаетс тем, что в известной литейной форме дл отливки охлаждаемых элементов, преимущественно кристаллизаторов, содержащей полумуфты с литниковой системой и армирующие трубки, установленные на металлических стержн х-фиксаторах , последние выполнены по длине разъемными из двух частей и закреплены на обоймах, расположенных с противоположных сторон полуформ,;This goal is achieved by the fact that in a well-known casting mold for casting cooled elements, mainly crystallizers, containing coupling halves with a gating system and reinforcing tubes mounted on metal rods x-clamps, the latter are made of two parts along the length and secured to collars opposite sides of the half-form;

Причем зазоры между внутренней поверхностью армирующих трубок и наружной поверхностью металлических стержней-фиксаторов заполнены термостойким материалом.Moreover, the gaps between the inner surface of the reinforcing tubes and the outer surface of the metal rods-clamps filled with heat-resistant material.

Claims

FIG. 1 shows a casting mold for casting cooling elements, a general view in section; in fig. 2, view. 1 in FIG. 1 .. The mold contains the middle part 1, in which the casting system 2 is placed. The reinforcing tubes 3 are placed in the mold cavity and installed in the working position on metal rods x-clamps 4 rigidly fixed on the ring base 5. To prevent these from melting rods 4 with molten metal when the reinforcing tubes 3 are burning, between them heat-resistant material 6 is placed. In the lower part 7 short metal rods 8 are installed. The molding rod 9 serves to form the inner surface of the casting and. The mold also includes an upper detachable part 10. In the lower part 7 there is a cavity 11 in which the ring holder 12 is placed. On the ring holder 12, short metal rods 8 are rigidly fixed. In the upper part of the rod 8 there is a cavity 13 in which the holder 5 is mounted To simplify disassembly of the casting mold after casting and repeated use of the casing 12 and 5 with welded metal rods 8 and 4, the short rods 8 are welded to the lower ring cage 12 and the long rods 4 to the upper ring cage 12 The working length of the metal rods 4 and 8 is equal to the length of the reinforcing tubes. The manufacture of the mold begins with the molding of the lower part 7 of the mold with the cavity 11 and the holes for the reinforcing tubes 3. The lower part 7 is positioned so that the cavity 11 is at the top. A clip 12 is rigidly fixed to the cavity with short rods 8 so that the rods 8 pass through the center of the holes for the reinforcing tubes. The cavity 11 is molded. The lower part 7 is placed in the working position. A shaping rod 9 with a cavity 13 and openings for reinforcing tubes 3 are inserted into it. The reinforcement tubes 3 are inserted into the holes of the molding core 9 and the lower part 7, the reinforcement tubes are filled. 3 sealing mixture b, prepared from graphite powder and water and brought to a jelly-like consistency in the volume necessary for filling the space gush with reinforcing tubes 3 and strips 4 and 8. Lower the rods 4 rigidly fixed to the ring shell 5 into the reinforcing tubes 3. With this, the sealing mixture is forced out by the rods 4 and fills the entire space between the reinforcing tubes 3 and the rods 4 and 8. Fill and seal the cavity 13 with a molding compound. After cleaning the bottom of 7 from debris, install the middle part 1 and the upper part 10, crepe them between known methods. The funnel of the gating system 2 is installed. The mold is ready for pouring liquid metal. After the casting cools, the cavity 11 and 13 is freed from the molding material and the ring holder 12 with short rods 8 and the ring holder 5 with long rods 4 are removed. It is advisable that the melting point of metal rods 4 and 8 be higher than the melting temperature of the cast metal. This is necessary so that, in the event of the burnout of the reinforcing tube 3, the metal to be poured does not alloy with the core 4 and .8. The implementation of the proposed invention will reduce the scrap when casting molds due to a change in the geometric dimensions of the workpiece and burn-through of reinforcing tubes by 30%. A casting mold for casting cooled elements, preferably molds, comprising several parts with a sprue system and reinforcing tubes mounted on metal rods x-clamps, characterized in that, in order to simplify the assembly of the mold and improve the quality of the cooled elements to be cast, metal rods-faxers are made along the length of their two parts detachable and mounted on the cage located on opposite sides of the mold. A mold according to Claim 1, characterized in that the gaps between the inner surface of the reinforcing tubes and the outer surface of the metal rods and clamps are filled with heat-resistant material. Sources of information, taken in the interview at the examination. 1. Japanese patent 50-4456, cl. 11 B 083, 1975.

2. Japan patent number 1735, class 11 A 220.3, 1968.