Abstract: A beam structure for a web forming machine is arranged to be supported by its end components (10) on the web forming machine. The beam structure includes a casing structure (15) of a thin-sheet material, inside which a stiffener structure (30) is arranged. In addition, the casing structure (15) and the stiffener structure (30) are secured to each other to create a load-bearing beam structure.

Abstract: A beam structure for a web forming machine is arranged to be supported by its end components (10) on the web forming machine. The beam structure includes a casing structure (15) of a thin-sheet material, inside which a stiffener structure (30) is arranged. In addition, the casing structure (15) and the stiffener structure (30) are secured to each other to create a load-bearing beam structure.

Abstract: A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.

Abstract: A method and arrangement in doctoring in a paper or board machine is disclosed in which the web travels through at least one press nip, in which the press nip is formed by at least a press roll and its backing roll and in which at least one roll is doctored using at least one doctor device. The press roll is doctored essentially over the width of the web.

Abstract: The invention relates to a doctor apparatus (10) in connection with a roll (T) in a paper or board machine. The doctor apparatus (10) comprises a doctor beam (12) of lightweight construction and that the doctor beam (12) is arranged to pivot on bearing means (13a1, 13a2 . . . ) (pivot movement arrow L1). In connection with the doctor beam there are loading members (14a1, 14a2), a relative linear movement taking place between the loading members (14a1, 14a2) and backup surfaces (12′, 15a′) when the doctor beam (12) is being oscillated.

Abstract: A method and arrangement in doctoring in a paper or board machine is disclosed in which the web travels through at least one press nip, in which the press nip is formed by at least a press roll and its backing roll and in which at least one roll is doctored using at least one doctor device. The press roll is doctored essentially over the width of the web.

Abstract: A steam box includes a elongated steam-distribution chamber, regulator chambers set in a row next to the elongated steam-distribution chamber and covered on one side with a continuous perforated screen. Operating devices distribute the steam from the distribution chamber to each regulator chamber. The steam box is intended to feed steam through the perforated screen to the web, to heat it according to a desired profile. The perforated screen is secured along one long edge to hinge members and along the opposite edge to locking members and is arranged to be able to be opened, to permit access to the regulator chambers.

Abstract: A beam structure (10) made of a composite for a pulp machine/paper machine/board machine or for a paper/board finishing device. The beam (10, 10a1, 10a2) is formed of a first curved part (12) and of a second straight part (13) joined thereto, to which second straight part (13) a doctoring, coating or measurement apparatus (110) is attached.