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1. (WO2018180055) SEAL CONSTRUCTION MANAGEMENT METHOD, SEAL CONSTRUCTION MANAGEMENT DEVICE, SEAL CONSTRUCTION MANAGEMENT PROGRAM, AND SEAL CONSTRUCTION MANAGEMENT SYSTEM

Pub. No.:    WO/2018/180055    International Application No.:    PCT/JP2018/006411
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Feb 23 00:59:59 CET 2018
IPC: B25B 23/14
Applicants: VALQUA, LTD.
株式会社バルカー
Inventors: KOBAYASHI Yukio
小林 幸雄
KURIHARA Kazuya
栗原 和也
Title: SEAL CONSTRUCTION MANAGEMENT METHOD, SEAL CONSTRUCTION MANAGEMENT DEVICE, SEAL CONSTRUCTION MANAGEMENT PROGRAM, AND SEAL CONSTRUCTION MANAGEMENT SYSTEM
Abstract:
A seal construction management method to tighten by setting a plurality of tightening locations on a flange that sandwiches a gasket (12) and providing a bolt (6) and a nut (8) in tightening each location, wherein the torque to apply to the bolt or the nut depending on the number of circuits around the tightening locations or on the tightening location is calculated or selected, the torque is set in a tightening tool (14), and the output torque of the tightening tool is stepwise or continuously changed in accordance with the number of circuits or the tightening location. In this manner, the axial force of each bolt can reach the target axial force.