SU1206322A1 - Device for cooling wire - Google Patents

Description

The invention relates to heat treatment of rolled products, namely to the cooling of wire, rod, rod.

The purpose of the invention is to increase the uniformity and intensity of cooling, to protect the nozzles from damage.

FIG. 1 shows an installation for cooling a wire, a general view of FIG. 2, a section A-A of FIG. 1.

The unit for cooling the wire contains a bath 1, in the upper parts of the end walls of which there are half-circular grooves 2 to form and maintain the water level and to guide the wire 3 in the bath S there are collectors 4, the number of which depends on the maximum diameter of the wire to be processed 3 5 its heating temperature and speed of movement. The larger these values are, the greater the number of collectors needed for complete wire quenching. It has been established by practice that this value is equal to 3-4 collectors with a maximum diameter of 8 mm and a speed of 5 m / min.

Flat-jet nozzles 5 are installed on the collectors, providing flat jets from the bottom upwards to the wire, the nozzles are opposite the notches 2 across the width of the bath 1 and the nozzle planes are parallel to the end walls, the upper edge of the nozzles 5 is lower than the lower edge of the notches 2,

To prevent damage (see, abrasion, etc.) of the nozzles 5 by wire 3 or by nodes that bind the ends of the riots, the bath has longitudinal guide rods 6 of circular cross section between the notches 2 in the end walls of the bath 1. Bath 1 has a longitudinal a section in the form of a trapezoid, in which one angle p at the lower base is 90 and the other is about 120-135. Such a design is convenient for removing baths accumulating on the bottom of the bath of scale using a scraper 7 on the side 8 inclined at an angle of 120-135. Since there is a small overflow of water through the grooves 2, the bath 1 is located in the second bath 9, from which there is 10 drain water into the sewer.

The installation works as follows.

The wire 3, heated to 970980 C, is fed to the installation for cooling. Before starting work, the water flow through the nozzles 5 is adjusted so that the bath is first filled to the level of the semicircular recesses 2, and the height of the fountains from the nozzles must exceed the bath level by 40 mm. A pump can be connected to the nozzle-drain 10 for recycling water that enters the collectors 4. The wire is cooled in submerged jets. Cooling water is supplied through a set of nozzles from below.

up to the wire 3, At the gas turbine bath, where the collectors 4 are located with flat jet nozzles 5, water accumulates and the jets from the nozzles pass through it, forming

fountains with a height of 20-40 mm above the surface of the water in the bath. The wire, when cooled, goes through these submerged jets.

Due to the turbulization of water in the bath, heat exchange is intensified compared to cooling the wire in calm water. The fountains on the surface provide cooling for the wire from three randomly.

lifting it above the level of the bath. The displacement of the wire relative to the average position in the horizontal plane does not lead to exit from the washout zone due to the application

flat jet nozzles.

The proposed construction of the bath with end spillways allows the use of water

low pressure (1.0-1.5 MPa) and, therefore, efficient at low flow, which is especially important in the current conditions of water shortage for technological needs. The device is simple to manufacture and operate, this is facilitated by the use of an open bath with longitudinal rods and flat-jet nozzles, providing a small degree

clogged. Using the water supply circuit from the bottom up into the bath volume, i.e. the use of a method of cooling with submerged jets has provided puffs of moving filaments of wire

loki relative to the longitudinal axis.

Aa

Editor N. Yatsola

Compiled by N.Kuzovkina

Tehread 3. Pali Corrector B. Butt ha

8653/27 Circulation ssj Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, 4 Project St.

Fi & .2

Claims (2)

1. INSTALLATION FOR COOLING WIRE, containing a bath, collectors with flat-blast nozzles and guides, characterized in that, in order to increase the uniformity and intensity of cooling, the end walls of the bath in the upper part are made with recesses, and the flat-blast nozzles are directed upwards and installed in the bath across its width opposite the recesses, and the plane of the nozzles are parallel to the end walls, and the upper edge of the plane-jet nozzle is located below the lower edge of the recess of the end wall of the bath. 2. Installation according to π.1, which requires that, in order to protect the nozzles from damage! guides are installed between tanks in the end walls along the van us. 3. Installation pop. 1, excellent- I am with the fact that she has a a bone for collecting the spent cooler in which the bath is installed. from SU „, 1206322 Figure 1