Installation with a continuous mill
Rolling of seamless stainless steel tubes with outer diameter 30 to 102 mm and a wall thickness of 2−15 mm is on a special installation. It consists of sterenesulphonate, continuous mill for rolling sleeves, working with tension reduction, and sizing mill piercing mill, you need to get the sleeve. On the continuous rolling mill is of only a limited number of tubes — 2−3 to reduce the Park of expensive mandrels and rolls. Other sizes of finished pipes are made through a reducing pipe from this camp.
The source material is rolled round billet. First, it is heated and then transferred to the piercing mill, where it after flashing turns into a casing. Hot pocket with a piercing mill passes to become continuous rolling. Stalkivalis device is introduced into the sleeve cylindrical mandrel, pre-oiled inorganic phosphate compounds. The sleeve with the mandrel is pushed into the rolls of the first stand.
In the composition of the continuous mill has nine stands. Their axes are at an angle of 90°. In each of the crates has a pair of rolls which is driven by a separate electric motor. Although the rolls are the same as in the calibration mill, rolling is on the mandrel, which increases the length of the pipe and reduces its diameter and wall thickness.
Between the axes of the pair of rolls must be the same distance. To yield when rolling the pipe to pass through them for the same time period, the number of revolutions for each pair of rolls of the first stand to the last increases with the same progression. Calibration of the rolls provides for a slight tension of the pipe, which does not cause defects of the product and prevents looping.
All rolling in a continuous mill runs for 5−9 seconds. The main advantage of this installation — performance. The latest facilities where intermediate operations are mechanized, can be laminated per hour of not less than 300 pipes, that is, from 60 to 80 tons of metal. After the pipe mill shall be sent by the Transporter to sterenesulphonate, where it is removed from the mandrel. The mandrel is immersed for cooling in the tank and again sent to the front of the mill. And the tube is further transferred to the calibration of the reducing mill (19-tickletoe or 11-tickletoe), where there is a reduction of the wall thickness and its diameter, due to the tension between the stands.
To buy, price
In stock, LLC «Electrocentury-steel» a wide range of high quality stainless steel standard and custom sizes. Supply stainless steel pipe retail and wholesale. All the party goods have the quality certificate on conformity to requirements of standards and technical conditions. In the certificate marked by the manufacturer, drawing number, grade, number of melt, mechanical properties, chemical composition and results of additional tests. Implementation of orders in the shortest possible time. Wholesale buyers are offered preferential discounts.