02 Processing machinery for metallic tubes and pipes
02.01 Machinery for mechanical processing
02.01.01 Tube straightening machines
Tube straightening machines
Product category: Cold pilger rolling mills
Сold rolling mill 350-8
Such tubes have highly precise sizes, wall thickness, outer and inner diameters, high quality of outer and inner surfaces and favorable metal structure.
The tubes are typically used in space and aircraft engineering, shipbuilding, petrochemical and chemical industries, and other sectors of machinery building.
CRTM 350-8 mill is designed for front charging of a billet with its feeding to the deformation zone by pressing it to the end, with front drive location of left (or right) design.
Rolling process is carried out by reciprocating grooves with a variable profile on a cone-shaped or curved mandrel fixed in axial direction. When rolls approach their end positions a tube is released from the grooves. Feeding and turning of the tube is performed in end rear and front positions of the stand.
The equipment consists of a set of machines that carries out the major operations in the course of the tube production: - stand drive; - three-roll working stand; - leverage; - feed area equipment; - intermediate chuck; - front chuck; - charging table; - finished tubes receiving table; - oil and grease lubrication systems; - safety devices.
Tubes rolled at the mill have precision sizes of the wall thickness, outer and inner diameter, high quality of the outer and inner surfaces. Such tubes are used in space and aircraft engineering, oil and chemical engineering, ship-building and other industries.
The design decisions applied to the mill CRTM-380 are patented.
High technological mobility is achieved by the use of the following technological rolling schemes:
rolling with double feed and double turn; rolling at forward stroke of the working stand; rolling with feed and turn in the extreme back position of the working stand only.
To extend technological possibilities of the mill it is possible to equip it with the following interchangeable working stands:
3-high stand with ring passes having variable groove section is intended for production of high precision cylindrical tubes; 3-high stand is intended for production of hexagonal tubes 4-high stand is intended for production of square tubes.
JSC EZTM is one of the largest enterprises of Russian heavy industry since 1942. The company specializes in production of metallurgical equipment.
JSC EZTM has a complete cycle of production – metallurgical, welding, mechanical-assembling and auxiliary. There are design and technological departments, the research complex and the experimental base in the structure of the enterprise.
EZTM has delivered hundreds of machines and plants which are operating at metallurgical works of Russia, enterprises of CIS and in 40 countries of Europe, Asia, Africa and America. There are enterprises from Germany, India, Japan and USA among our customers. Both unique product mix and convenient work, individual approach, efficient problem solving is very attractive for our customers. That's why the enterprise has been collaborating with many companies for years.