DE2113356A1 - Mold for electroslag remelting plants - Google Patents

Description

Patent attorneys.

ZELLENFlN υ. LUYKEN.

8000 Munich 22

Zweibrückenstrasse 6 "'''. ■

Institut elektrosvarki imeni, P 58 082/2

EO Patona Akademii nauk ·· "· _ΛΟ > Ukrainskod SSR ·. ¹⁹ *

RZ / Br

Kiev / USSR ·.

COCILLE ϊϋΗ

The present invention relates to equipment for electroslag remelting and, more precisely, for electroslag remelting plants certain molds, which contain a core, which is responsible for the formation of cavities in the molten product serves. '

The invention can be used, for example, for the production of hollow blocks, housings of valve slides, housings of ■ · High pressure tanks, crank arms of crankshafts for high-performance diesel engines etc. can be used.

There are molds equipped with cores known that. for melting hollow blanks after the electro-slag remelting process vervve ^ / öet v / erden (see for example G.Bhat,

109847/1133

Modern achievements in the field of electroslag reclamation in the textbook "Scientific Problems of Welding and Specialty Metallurgy", 'l'eil 4, Naukowa. Dumka / Scientific Thoughts /, Kiev, 1970). In such In molds, the core is designed in the form of a thin-walled, water-cooled shell. The core surface through which the Interior of the casting is formed, has a corresponding shape, the core is above the base plate at a distance attached, - which is equal to the casting base thickness. With the core arranged in this way in the mold, the product becomes during the melting of the block, starting from the bottom part formed "

However, the known molds have significant disadvantages. They find limited use as it is impossible to melt bottomed IIoWL castings in them, though. the ratio of the diameter of the casting to its wall thickness is large. · ':.;' - '. ·

It is the aim of the present invention to do the mentioned Eliminate disadvantages. . \

The invention is based on the task, a. To create a chill mold with a core, the use of which in the manufacture of cast pieces with both internal and external * side cavities (according to your ElelrtroschlaGke remelting process) it enables significantly the j? ertigong technology of the j? orin castings regardless of. to simplify their wall thickness.

This object is achieved in that at. of?. Mold

109847/1137

OWG (NAL INSPECTED

for electro-slag smelting plants, which contain a core which is used for the product to be smelted into a rough shape »according to the invention. Core is arranged immovably with respect to the casting within the mold and that its length than the height of the casting in the direction "in which it is melted less is.

According to the invention, a variant is possible in which at least a core is placed on the base plate *

At least one core is expediently inserted into the mold side wall.

In addition, the length of the core, which is inserted into the Kokillenseitenwand, be greater than the Gußstückdicke.

Such a construction of chill molds with a core is made possible it, for example, to melt hollow castings with the bottom at the top, i.e. the bottom part of the casting does not become closed The process begins when the casting is melted, but is formed at the end of the same. Furthermore can be sufficient complex shaped castings with openings, etc. can be produced. . · "

The invention is hereinafter described by way of description of exemplary embodiments with reference to av-f üe Drawings explained; it shows

Tfigleine mold according to the invention with arranged in it

Core in longitudinal section, ■

2 shows a section through the mold according to the invention

109847 / 113.7

after. Line II-II of Fig. 1 (with a single-use core),

3 shows a mold according to the invention with a core that can be used many times over in the "longitudinal section j .."

4 shows a variant of the core being placed on the base plate the mold according to the invention in longitudinal section,

Fig. 5 is a section along line V-V of Fig. #,

Fig. 6 shows a variant of the setting of the Kerriems on the side wall the mold according to the invention in longitudinal section,

7 shows a section along line VJiI-VII of FIG. 6,

Fig. Β a variant of the kernel in set zens ".in., The Side wall of the mold for the manufacture of a crank arm of the crankshaft and. '. ·'. ''

. Fig. 9 e /> e side view ier. VaW ante after F <$. 8th

Inside the mold X is at least one immobile Core 2 (Fig. 1 and 2) arranged. Preferably, with one-time

a

produced castings placed in the mold 1 thin-walled and cooled core 2, which is used only once. In the case of mass production of the castings, it is useful in the

mlhet) ■ ·

To set up mold 1 core 2 (Fig. 2), 'which is used many times will * This core 2 consists, for example, of water-cooled

Mantle 5 and monolithic body 4 .. ''

If two or more cores 2, for example, whose height is lower, can be placed on the base plate 3

109847/1137

than that of the casting 6 in the melting of the block (casting ¹

_e ; _n ' a

piece) is, Ilohlgußstück 6 with .Boden 7 and with, for example two (or more) cavities (channels) made in the axial direction will..

Such a hollow casting can also be melted without a bottom zen. In this case it can be used, for example, as a blank for pressing multi-channel pipes.

The insertion of the core or of several cores into the side wall of the mold 1 makes it possible to produce cast pieces 6 with cavities which, for example, lie in the radial direction (FIGS. 6 and 7). In some cases, when making castings 6 with cavities located in mutually perpendicular directions, cores 2 can be placed on the base plate 5 and the side wall of the mold at the same time

- tow- '. · · -

1. ■ '"

The manufacture of castings is of some interest with an opening, for example of crank arms for high. power ship diesel engine crankshafts · In this case .Kern 2 "> the side wall of the mold 1 is used or passed through both side walls .. Here, its length is greater than the thickness of the casting (crank arm 8) (j? ig, ö and 9). The manufacturing process of the crank arm 8 with opening

a · ■ "

is significantly simplified if the immovable electrode 9

with a . opening is used ·, in

S ^- ■ ■ '

ie when inserting. the electrode in the mold ώ »·

Core 2 is inserted ,

1098-47 / 113 * 7 ■ * .-.

.- «* - '·. 2113358

The use of the mold according to the invention with a cooled core in the manufacture of castings according to the Elekt rös chi acke-üiaschmel 2V experience makes it possible to simplify the technology of Solve castings with a large ratio of diameter to wall thickness.

.b _

U I.

OBiGlNAL INSPECTED

Claims (4)

P 38-082 / 2 RZ / Br X. Mold for i & ektrQsohlacke-Umechmel «systems, the one Contains core that is responsible for the formation of cavities in the Er- to be melted. ' certificate serves, characterized that the core (22) within the KokiXXe (X) is immovable with respect to the casting (6) and that its length less than the height of the casting (6) in the. Is the direction in which it is melted. '■. . 2. Chill mold according to claim 1, characterized in that at least the tin core (2) is on tilt · lower ■ ·. Set plate (5) put on 1st. J. Mold according to Claim 1, characterized in that there is a core (2) t> its side ν wand et'egesetst is «'. . 4. Chill mold according to claim 3, characterized geke nn z e ic hne t, that the length e "ee h the Kokillenseitenwand. ' inserted core (2) greater than the thickness of the casting (8) L INSPECTED 109847/113 ^