摘要:
Provided is a wire rod for an I-type oil ring, which includes right and left rail portions and a web portion connecting the rail portions, which has an oil hole or a molten through hole formed in the web portion, and which has a circumscribing circle diameter of 10 mm or less in its transverse contour. The molten through hole has such a remolten portion formed on its exit side as encloses the exit of the molten through hole. The remolten portion exceeds such a molten portion in the transverse section along the center of the molten through hole as is formed in the molten through hole, and is formed to have 200 µm or less from the outer circumference of the molten through hole and 100 µm or less in the depth direction of the molten through hole.
摘要:
An extraction system is designed for metal working and other applications. The system may comprise a blower that delivers a positive pressure airflow to a hood that creates an air region for removal of airborne components from a work area. Return air is filtered in a filter region, and debris removed may be separated by a baffle in the filter region to limit re-uptake of the debris by the blower during operation of the system.
摘要:
The deburring tool (20) includes: upper and lower ball holding members (42, 52) disposed so as to oppose each other; upper and lower balls (43, 53) that are rotatably supported by the respective upper and lower ball holding members (42 52) and that project so as to confront opposing surfaces of the respective lower and upper ball holding members (52, 42). In a state where a thermally cut portion (A) of the sheet material (W) is held between the upper and lower balls (43, 53), by moving the sheet material (W) along the thermally cut portion (A) by a sheet material moving mechanism, a lower surface edge portion (C) along the thermally cut portion (A) of the sheet material (W) is pressed upward by the lower ball (53).
摘要:
Die Erfindung betrifft ein Verfahren zur Fertigung eines Yankeezylinders (1) aus Stahl, wobei der Yankeezylinder (1) aus einzelnen vor- oder fertig bearbeiteten Zylinderschüssen (8, 9, 10) zusammengeschweißt wird. Die Erfindung betrifft auch einen Yankeezylinder (1), der nach dem erfindungsgemäßen Fertigungsverfahren hergestellt worden ist.
摘要:
A pair of upper and lower electrode wheels (1, 2) are disposed so that their axes (17, 18) are tilted in a horizontal plane in respective directions opposite to each other with respect to a straight line (Y) perpendicular to a welding line (X) defined on overlapping portions (L) of two metal plates (5, 6), and mash seam welding is performed while positively driving electric motors (61, 62). This can reduce the increased amount of thickness and step gradient of a joint portion to reduce a stress concentration factor to ensure a high degree of joint strength. The metal plates are joined to each other such that a nugget (N) is not deviated from a joint interface. The respective tilting directions of the axes (17, 18) of the electrode wheels (1, 2) are made to face in the horizontal plane toward the extending direction of a metal plate with which the electrode wheels (1, 2) first come into contact. Therefore, it is possible to prevent respective ends of the metal plates at the overlapping portions L from biting into and scratching the corresponding electrode wheels (1, 2) and to prevent the occurrence of spattering during the welding.