SU1560369A1 - Top - Google Patents

Abstract

The invention relates to foundry, in particular, to equipment for casting metals. The aim of the invention is to increase durability and reduce operating costs. A profitable extension contains a metal case 1, shelves, thermal insulation 5 on the outside of the case, a pin, the bottom shelf has a thickness equal to 1.1–1.6 of the case thickness, and the case thickness is 0.02–0.06 case diameter lower part. The shelves are reinforced with pins 4, and the heat insulating porous material between the shelves is protected by sheet steel. The invention improves durability and reduces operating costs. 2 Il.

Description

one

(21) 4394857 / 23-02

(22) 21.03.88

(46) 04.30.90 ,, Bull. Number 16

(71) Ukrainian Scientific Research Institute of Metals, Nizhny Tagil Iron and Steel Works and Leningrad Institute for the Design of Metallurgical Plants

(72) V.A.Pal Nyukky, A.V., Pan, M, S.Gordiyenko, A.A. Mitenev, A. "Io Belousov and K.S. Kasky is new

(53) 621.746,464 (088.8,)

(56) USSR author's certificate No. 1025483, class „В 22 D 27/00, 9820

(54) PROFITABLE SUPPORT

(57) The invention relates to foundry, in particular, to metal casting equipment. The purpose of the invention is to increase durability and reduce operating costs. A profitable extension contains a metal case 1, shelves, heat insulation 5 on the outside of the case, a pin, the bottom shelf has a thickness equal to 1.1–1.6 of the case thickness, and the case thickness is 0.02–0.06 case diameter lower part. The shelves are reinforced with pins 4, and the heat insulating porous material between the shelves is protected by sheet steel. The invention improves durability and reduces operating costs. 0 2 sludge

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ABOUT

OS O5 CO

The invention relates to foundry, in particular, to equipment for casting metals.

The purpose of the invention is to increase the durability and cost savings in the operation of profitable extensions. Fig. 1 shows a profitable extension, a longitudinal section; fig 2 - the same cross section

The profitable extension includes a housing I with the upper 2 and with the lower 3 shelves reinforced with each other by pins 40 thermally insulating porous material 5 protected by sheet steel 6. To install onto a mold and remove the profitable extension has trunnions 7. Sheet steel is pressed into special grooves 8 or welded to the shelves. The number of reinforcing pins 4 depends on the size of the profitable extension: from one to four per edge.

Before metal is poured, the internal walls of the housing of a profitable add-on are lubricated in a mechanized way with the same material as the walls of the mold.

In operation, after filling the profitable extension with metal, case 1 is quickly heated, taking a small amount of heat due to its small thickness (C), 02-0.06 of the inside diameter of case 1 in the middle part of the height). Further heat losses are prevented by the porous heat insulating material 5. In the lower part of the profitable extension in the hardening metal, the bridge is not formed, since the bottom shelf 3 has small dimensions (1.1–1.6 body thicknesses). The required structural rigidity is provided by reinforcing pins 4. Porous thermal insulation material 5 is not consumed, as it is protected by sheet steel 6, the solidifying ingot does not contact and does not contaminate thermal insulation. 0 In addition, the ingot does not hang in the profitable part , as the inner walls of the housing profitable extension smooth.

Example 1. For casting ingots with a mass of 3.8 tons, a four-square profitable extension with a reduced internal diameter in the middle height of the part equal to 580 mm is made. 1 extension case with top

2 and the lower 3 shelves, the pins 8 in the shelves are molded from cast iron. The thickness of the body is taken equal to 0, -11.6 mm, and the thickness of the lower flange 1.1 "11.6 12.8 mm. One pin 4 is placed on each face. Then, a slag. 5 is placed in the cavity between the shelves and sheet 6 is pressed into the grooves 8, 4-6 mm thick. Before casting, the profitable extension together with the mold is lubricated with a protective coating (for example, coal lacquer). A profitable extension can withstand 200 rolls and, practically, does not require preparation (only mechanized lubrication). A profitable prototype extension for a similar ingot will withstand 130 fillers and will fail due to the warping of the lower shelf 3, while in the proposed profitable extension the warping is warned by reinforcing pins 4. In addition, the cost of operating the profitable prototype extension will be 2.5 -3 times higher due to the high labor intensity of the manufacture of screens, the need to replace them during operation.

Example 2o For casting ingots with a mass of 7.8 tons, a four-sided profitable extension is made with a reduced internal diameter in the middle height of the part equal to 750 mm. The housing 1 of the extension with the upper 2 and lower 3 shelves, trunnions 7 and grooves 8 in the shelves is made of cast iron. The thickness of the case 1 is taken equal to 0, 30 mm, and the thickness of the lower shelf is 1, 42 mm. Two pins 4 are placed on each face. Then kaolin wool 5 is placed in the cavity between the shelves and sheet 6 6 4-6 mm thick is welded to the shelves. Before pouring, the sulfite-alcohol bard is applied by a mechanized method on a profitable support. The profitable extension can withstand 175 fillings without replacing any parts. A profitable prototype extension for a similar ingot will withstand 100 rolls. "The costs of operating a profitable prototype extension will be 2.5-3 times higher due to the large labor intensity of the production of screens, the need to replace them in the process

operation, greater specific consumption of profitable extensions „

PRI me R 3. For castings of ingots of mass P, 7 tons, they produce a four-sided profitable extension with a reduced internal diameter in the middle height of the part equal to 900 mm. „Body 1 of extension with upper 2 and lower 3 shelves, trunnions 7 and grooves 8 in shelves molded from steel. The shell thickness is taken to be 0.06 900 54 mm, and the bottom flange thickness is 1.654 to 86 mm. On each face, 3 pins 4 are placed. Then, a slag 5 is placed in the cavity between the shelves and sheet metal 4-6 mm thick is welded to the shelves. Before pouring metal on the inside of the pins installed in the grooves of the shelf, the bottom shelf has a thickness equal to 1.1-1.6 of the thickness of the shell, and the thickness of the shell is 0.02-0.06

The walls of the profitable extension of the given case diameter in the medium are applied with a layer of volatile insulating lubricant. The profitable extension supports 150 filings. The profitable extension prototype for a similar ingot will withstand 75 fillers. Costs

the height of the part, while the thermal insulation consists of a porous material placed between the shelves and an insulation screen of sheet steel

Compiled by L. Kazakova Editor A. Dolynich Tehred M. Khodanych Corrector M. Pojo

Order 942

Circulation 624

VNIIL of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035

when operating a profitable prototype prototype, they will be 2.5–3 times higher due to its higher specific consumption, the need to replace screens and their high cost.

Claims (1)

Invention Formula A profitable extension containing a metal case, shelves with grooves located on the outside of the case and thermal insulation, characterized in that, in order to increase durability during operation, it is provided with spacers de pins installed in the grooves of the shelf, and the bottom shelf has a thickness equal to 1.1-1.6 thickness of the shell, and the thickness of the shell is 0.02-0.06 the reduced case diameter in the middle height of the part, while the heat insulation consists of a porous material placed between the shelves and a heat shield of sheet steel eight FIG. 2 Subscription