SU775179A1 - Device for electrochemical cleaning of ingots - Google Patents

Description

(54) DEVICE FOR ELECTROCHEMICAL

CLEANING CASTINGS

I

The invention relates to the field of electrochemical cleaning, in particular, to the field of mechanization and automation of the processes of cleaning castings and forgings of ferrous alloys from OK-5 in casting, forging and thermal shops.

The known bath for electrochemical cleaning of products, containing a container for the working medium, heating the U device and heat-insulating lining, while the bath is made in the form of two concentrically arranged containers, in the gap between which there is a substance that passivates the mat of carpus bath 15 | .

This device is closest to the claimed in its technical essence and the achieved result .20

However, this bath structure is unacceptable for the purposes of high-temperature electrochemical cleaning baths for the following reasons:

Efficiency of the heating device25

falls to the lowest limit, as heat losses during transmission due to thermal conductivity of thermal energy at the boundaries of the section increase; 30

the design becomes whiter and more uncomfortable to use, the installation, dismantling, cleaning of crucibles and baths becomes more difficult;

the crucible is not protected from electrically dissolving and thermal warping; therefore, CMSIHv inevitably causes an electrolyte of the bath with intermediate heat transfer, which can lead to accidents.

The aim of the invention is to increase productivity and increase the service life of the device.

The goal is achieved by concentrically arranged containers made in the form of cylinders, the inner of which has a perforated shell surface and provided with a pallet made with mechanical fastening to the shell, while the heating elements are made in the form of pipes and are located in the gap between the cylinders.

FIG. 1 shows the device for the electrochemical cleaning of castings in FIG. 2 - the same, top view,

Claims (1)

The device for the electrochemical cleaning of castings contains a bath for molten alkalis, made in the form of two concentrically arranged tanks 1 and 2, a side suction 3, heating elements 4, heat insulating lining 5, suspensions 6 with cleaned parts. Capacities 1 and 2 are made in the form of cylinders. In this case, CYLINDER 2 has a perforated shell surface and is provided with an If pallet that is mechanically secured to the shell. The device works as follows. The inner cylinder 2 with the pallet 7 is taken out of the device and the crushed chunks of alkalis are loaded into it to the level of a side suction. Here we include electric heaters and, periodically adding solid salts, maintain the bath until the entire charge is melted. Then the cylinder 2 with the pallet 7 is lowered into the device and the temperature of the melt is adjusted to the required technology. Into the prepared cylinder 1, the suspension is lowered with cleaned parts 3. The suspension is connected to the negative pole of the direct current source, and the cylinder 2 is connected to the positive pole. As the sludge accumulates in the pallet 7, it is removed by a hoist or a faucet together with cylinder 2 and cylinder 2 is disconnected from the pallet 7, the hot pan with the sludge is left for cooling and cleaning, and a clean pallet is attached to the cylinder 2 allowed into the device. Simultaneously inspect cylinder 2 and determine how much it dissolves. If necessary, they replace it with a new one. . In the case of burnout of the single and tubular heating elements 4, a light bulb lights up on the remote control, the heater is disconnected and pulled out of the socket with the help of the helm, then a new one is inserted. All this is done without stopping the cleaning process. The proposed bath design provides an increase in the service life of the bath due to the absence of warping and dissolving of the walls of the main container by about 10-15 times; improves operating conditions, as it provides cleaning and repair; reduces electricity consumption by about 30-46%, since there is no external source of heat. The device for electrochemical cleaning of castings, containing a bath for molten alkalis, made in the form of two concentrically arranged containers, a side suction, heating elements and heat-insulating lining, characterized in that, in order to increase productivity and increase the service life of the device, concentrically arranged containers are made in the form of cylinders, the inner of which has a perforated shell surface and is provided with a pallet made with the possibility of mechanical closure heat to the shell, while the heating elements are made in the form of pipes and are located in the gap between the cylinders. Sources of information taken into account during the examination of the USSR Author's Certificate of the USSR No. 487959, cl. From 23 G 3/00, 1971.