B21C45/00

Device and method for handling mandrel rods in a tube rolling mill
20230201900 · 2023-06-29 · ·

A device for handling mandrel rods in a rolling plant for rolling seamless tubes comprises an inserter. The inserter moves a mandrel rod in a rolling direction such that the mandrel rod, starting from an initial state, is pushed into a tube blank situated upstream of the mandrel rod. A retaining device has a fixing unit that is movable along the rolling line and is designed to temporarily hold the mandrel rod at an action point at a rear end of the mandrel rod and to carry out a working stroke. The mandrel rod can be inserted into the rolling mill in the rolling direction and pulled out of the rolling mill counter to the rolling direction by the retaining device. The retaining device is designed such that the starting position of the fixing unit lies between the two ends of the mandrel rod in the initial state.

Method and apparatus for making seamless pipe
10632514 · 2020-04-28 · ·

The invention relates to a device and a method for producing a pipe (1) from a hollow block (2) which has an opening (3). The device has a rolling mill (30) for rolling the hollow block (2) via a rolling rod (21) introduced into the opening (3) of the hollow block (2), whereby the pipe (1) is produced. A retaining device (70) for retaining the pipe (1) is provided behind the rolling mill (30), and the device is further designed such that the rolling rod (21) can be drawn out of the pipe (1) after the rolling process while the pipe (1) is retained by the retaining device (70).

Method and apparatus for making seamless pipe
10632514 · 2020-04-28 · ·

The invention relates to a device and a method for producing a pipe (1) from a hollow block (2) which has an opening (3). The device has a rolling mill (30) for rolling the hollow block (2) via a rolling rod (21) introduced into the opening (3) of the hollow block (2), whereby the pipe (1) is produced. A retaining device (70) for retaining the pipe (1) is provided behind the rolling mill (30), and the device is further designed such that the rolling rod (21) can be drawn out of the pipe (1) after the rolling process while the pipe (1) is retained by the retaining device (70).

Mandrel conveying device for a tube rolling mill

A rolling plant (R) for rolling tubes having a multi-stand rolling mill (5) with two or more rolls, in order to implement a controlled speed mandrel rolling process, comprises a hooking and releasing device (61) which is arranged in the inlet area of the rolling mill (5) to cooperate with the rear tang of the mandrel (31) and a hooking and releasing device (71) which is arranged in the outlet area of the rolling mill (5) to cooperate with the front tang of the mandrel (31) in coordinated manner with the first hooking and releasing device (61).

Mandrel conveying device for a tube rolling mill

A rolling plant (R) for rolling tubes having a multi-stand rolling mill (5) with two or more rolls, in order to implement a controlled speed mandrel rolling process, comprises a hooking and releasing device (61) which is arranged in the inlet area of the rolling mill (5) to cooperate with the rear tang of the mandrel (31) and a hooking and releasing device (71) which is arranged in the outlet area of the rolling mill (5) to cooperate with the front tang of the mandrel (31) in coordinated manner with the first hooking and releasing device (61).

METHOD AND APPARATUS FOR MAKING SEAMLESS PIPE
20180169725 · 2018-06-21 ·

The invention relates to a device and a method for producing a pipe (1) from a hollow block (2) which has an opening (3). The device has a rolling mill (30) for rolling the hollow block (2) via a rolling rod (21) introduced into the opening (3) of the hollow block (2), whereby the pipe (1) is produced. A retaining device (70) for retaining the pipe (1) is provided behind the rolling mill (30), and the device is further designed such that the rolling rod (21) can be drawn out of the pipe (1) after the rolling process while the pipe (1) is retained by the retaining device (70).

METHOD AND APPARATUS FOR MAKING SEAMLESS PIPE
20180169725 · 2018-06-21 ·

The invention relates to a device and a method for producing a pipe (1) from a hollow block (2) which has an opening (3). The device has a rolling mill (30) for rolling the hollow block (2) via a rolling rod (21) introduced into the opening (3) of the hollow block (2), whereby the pipe (1) is produced. A retaining device (70) for retaining the pipe (1) is provided behind the rolling mill (30), and the device is further designed such that the rolling rod (21) can be drawn out of the pipe (1) after the rolling process while the pipe (1) is retained by the retaining device (70).