Cold pilger rolling mill and method for producing a pipe
A cold rolling mill and format technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve manufacturing and other problems, and achieve the effects of reducing operating costs, compact structure, and continuous throughput
Pending Publication Date: 2018-12-21
SANDVIK MATERIALS TECH DEUTLAND
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, if high-quality pipe fittings are required, that is to say pipe fittings with a uniform wall thickness and high surface quality inside and outside and over a length of 150 m, then they cannot be manufactured in a Pilger cold rolling mill according to the prior art. this pipe fitting
Method used
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Embodiment Construction
[0093] exist figure 1 The structure of a cold pilger rolling mill according to the invention is shown schematically in side view. The pilger cold rolling mill 7 consists of a roll stand 1 with an upper roll 2 and a lower roll 3, a rolling mandrel 4 through a fixed hole type (in figure 1 The positioning of the rolling mandrel is marked with the reference numeral 4), the mandrel rod 8 carrying the rolling mandrel 4, the feed compaction slide with the feed compaction chuck 12 for accommodating the tube blank 11 5. The front mandrel support 15 with the compression chuck 19 and the discharge compression slide 18 with the compression chuck 22 are formed. In the embodiment shown, the cold pilgering mill has a linear motor 6 as direct drive for feeding the hold-down carriage 5 .
[0094] Such as Figures 1 to 3 In all embodiments, the cold pilger rolling mill 7 has a decoiling device 26 for supplying the blank tube 11 . The uncoiling device 26 is responsible for uncoiling the blan...
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Abstract
The invention relates to a cold pilger rolling mill (7') for cold-forming a bloom (11) to form a cold-hardened pipe (25), comprising a roll stand (1) having rollers (2) rotatably mounted thereon. In this respect, an object of the invention is to permit the rolling of long blooms that is as efficient as possible, without reducing the quality of the pipes to be produced. According to the invention,in order to achieve this object, the cold pilger rolling mill is to be configured in such a way that the cold pilger rolling mill has an unwinding device (26), wherein the unwinding device is configured and arranged in front of the front mandrel thrust block in the feed direction of the bloom such that a spindle, which can be rotated about an axis perpendicular to the feed direction of the bloom and with the bloom wound on same, can be received thereon, and during an operation of the cold pilger rolling mill, the bloom can be unwound and supplied between the chuck of the front mandrel thrust block and the mandrel bar to the feed clamping slide and the roll stand.
Description
technical field [0001] The invention relates to a pilger cold rolling mill, which is used for cold reforming tube blanks into cold work hardened pipe fittings, the pilger cold rolling mill has a roll stand on which there is a rotatable Supported rolls, wherein the roll stands can be powered by motors in a direction parallel to the longitudinal axis of the tube blank between a forward deflection point in the feed direction of the tube blank and a rear deflection point in the feed direction of the tube blank driven to and fro, wherein the rolls perform a rotational movement during the back and forth movement of the tube blank, so that the roll rolls out the tube blank into a tube when the pilger mill is in operation, the pilger mill also has a rolling mandrel, wherein The rolling mandrel is held by the mandrel rod on the rear end of the mandrel rod in the feed direction of the tube blank in such a way that the tube blank rests on the rolling mandrel during the operation of the P...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B21B21/00
CPCB21B1/16B21B27/024B21B15/00B21B39/02B21C47/18B21B21/045B21B21/065B21B2015/0064B21B21/005
Inventor 克里斯托弗·赫德瓦尔乌多·劳夫曼托马斯·弗罗伯泽
Owner SANDVIK MATERIALS TECH DEUTLAND