SU975187A1

SU975187A1 - Ingot mould for casting ingots

Info

Publication number: SU975187A1
Application number: SU813292054A
Authority: SU
Inventors: Вадим Николаевич Раттенберг; Моисей Сендорович Гинзбург
Original assignee: Специальное конструкторское бюро тяжелых цветных металлов при Институте "Гинцветмет"
Priority date: 1981-03-24
Filing date: 1981-03-24
Publication date: 1982-11-23

Description

(54) ИЗЛОЖНИЦА ДЛЯ ОТЛИВКИ СЛИТКОВ(54) TOOL FOR CASTING INGOTS

1one

Изобретение относитс к цветной металлургии , а именно к производству слитков.The invention relates to non-ferrous metallurgy, namely the production of ingots.

Наиболее близкой к изобретению по технической сущности и достигаемому резулбтату вл етс изложница дл отливки медных анодов, выполненна в виде массивной плиты с открытой рабочей нолосгью. Верхние , примыкающие к рабочей полости грани плиты параллельны основанию 1.Closest to the invention to the technical essence and the achieved result is a mold for casting copper anodes, made in the form of a massive plate with an open working tip. The upper, adjacent to the working cavity of the face of the plate parallel to the base 1.

Недостатками известнЫ изложницы вл ютс трудность удалени шлака с поверхности расплавленного металла, а также необходимость обрубки обло по контуру, достигающего толщины 3-8 мм.The disadvantages of the known mold are the difficulty of removing slag from the surface of the molten metal, as well as the need for pruning around the contour, reaching a thickness of 3-8 mm.

Такой облой с трудом обрубаетс , при этом больша его часть дробитс на мелкие части, увеличива процент безвозвратных потерь металла. Кроме того, горизонтальные верхние грани затрудн ют более полное удаление шлака, так как ранее образованный облой быстро застывает н преп тствует повторному движению скрёбка.Such burr is hardly cut off, with most of it being crushed into small pieces, increasing the percentage of irretrievable metal losses. In addition, the horizontal upper faces hinder the more complete removal of slag, since the previously formed burr quickly solidifies and prevents the repeated movement of the scraper.

Цель изобретени - более эффективное отделение обло от слитка и лучшее удаление шлака с открытой поверхности слитка.The purpose of the invention is to more effectively separate the slab from the ingot and better remove slag from the open surface of the ingot.

Поставленна цель достигаетс тем, что верхние торцовые поверхности или и| участки со стороны рабочей полости выполнены с уклоном вниз к периферии под углом 10- 45° к горизонтали.The goal is achieved by the fact that the upper end surfaces or and | areas on the side of the working cavity are made with a slope down to the periphery at an angle of 10-45 ° to the horizontal.

На фиг, 1 изображена изложница, заполненна металлом, общий вид; на фиг. 2 - свема нагрузок на облой при усадке слитка; на фиг. 3 - изложница с боковыми гран ми в виде двухграиного угла. Fig. 1 shows a mold filled with metal, a general view; in fig. 2 - svema loads on burr during ingot shrinkage; in fig. 3 — ingot mold with side edges in the form of a two-edged angle.

10 Изложница представл ет собой плиту 1 полн емой металлом 3. Верхние граНи 4 плиты 1 выполиены с уклоиом вниз к внешней в виде двухгранного угла. зонтали, составл ющим 10-45°.10 The ingot mold is a plate 1 filled with metal 3. The upper facets 4 of plate 1 are made of polyethylene with the slope down to the outer one in the form of a dihedral angle. umbrellas of 10-45 °.

При наполнении рабочей полости 2 таллом последний вместе со щлаком переливаетс на верхние грани 4 и образует облой 5 по контуру рабочей полости 2.When filling the working cavity 2 with the thallus, the latter, together with the shlak, is poured onto the upper faces 4 and forms a flash 5 along the contour of the working cavity 2.

При остывании слитка ои вместе с облоем за счет объемной усадки сжимаетс ,When the ingot cools with the burr due to volumetric shrinkage, it is compressed,

Claims

20 reduced in size. In this case, due to a slope of 10-45 ° of the upper edges, the bluff tries to lift the ingot from the mold. The weight of the ingot significantly exceeds the mechanical strength of the bluff in the temperature range of red brittleness, therefore, a brittle fracture occurs at the base of the bluff and the bluff separates from the ingot body or cracks form, weakening the bonding of the bite. The optimum slope values of the top face are in the range of 10-45. This burr is much easier to separate from the ingot. In addition, by making the upper edges of the mold with a bias towards the overflow of metal from the mold, the conditions for removing slag from the filled mold are facilitated. In order to prevent metal spillage on the side surfaces of the mold, the upper edges of the plate are made in the form of a dihedral angle (Fig. 2). Example. The mechanical strength of the flash applied to the nickel anode of the Severonikel. Anode weight 400 kg; 0.5 cm thick; Oblo perimeter - 360 cm; shoulder load on the weight of the anode during shrinkage and 0.3 cm; angle of inclination of the upper surface of the mold ot 30 °. Under these conditions, the stress due to bending with a slice at the base of the bead is 5 tons (5 9 kg / cm. The mechanical strength of anodic nickel in the temp range 1) of the paint breaks (850-1000 ° C) is almost zero, so cracks a and this rim is easily separated from the anode web. Such an effect is observed with a slope of the upper edges of not less than 10 °; at lower angles of inclination, the bending stress at the base is not enough to form a fracture or crack. A slope under the ANGLE of more than 45 ° is undesirable, since with such mold making, due to a significant reduction in wall thickness, their service life decreases, therefore, at angles close to 45 °, it is especially advisable to flatten the upper faces of the mold wall at an angle Using the invention makes it possible to more effectively separate the baking sheet from the ingot and it is better to remove the slag from the open surface of the ingot. The invention The mold for the molding of scraps, made in the form of a plate with a trough-shaped working cavity, characterized in that, with its more efficient separation of the ice from the ingot and better removal of slag from the open surface of the ingot, the upper end surfaces or their sections from the working cavity are made with a slope down to the periphery at an angle of 10-45 ° to the horizon. Sources of information taken into account during the examination 1. Kupkov Yu. Fire refining of blister copper and the production of copper ingots. M., “Metallurgists, 1970, p. 120