ISO-8793-1986.pdf
《ISO-8793-1986.pdf》由会员分享,可在线阅读,更多相关《ISO-8793-1986.pdf(5页珍藏版)》请在三一文库上搜索。
1、International Standard ,NTERNAT,ONAL ORGANIZATION FOR STANDARDIZATION.MEW(LIYHAWAHAR OPrAHH3Al the ferrules are made of steel, aluminium or copper. The eye termination may be made either as a Flemish eye or a turn back loop. Prototype tests covering the type acceptance of ferrule-secured systems and
2、 routine quality control requirements for ferrule- secured eve terminations are also specified in this International Standard. 2 Reference IS0 2408, Steel Characteristics. 3 Definitions wire ropes for general purposes - 3.1 ferrule-secured eye termination (mechanically spliced) : Eye termination mad
3、e by forming an eye, which is secured by means of a ferrule pressed on the rope. There are two main types : the Flemish eye and the turn back loop. 3.1.1 Flemish eye : Eye termination where the rope end is split in two parts of three or four strands each, which are laid together again in the opposit
4、e direction, forming an eye which is symmetrical to the rope axis. The tails of the strands are distributed equally around the main body of the rope. They are fixed in this position by means of a ferrule (see figure 1). Figure 1 - Flemish eye eye terminations 3.1.2 turn back loop : Eye termination w
5、here the rope as a whole is bent to form an eye, the rope end being fixed onto the main body of the rope by means of a ferrule (see figure 2). Figure 2 - Turn batik loop 3.2 sponsor : The person or organization which takes responsibility for the material, design, dimensions, identifica- tion, protot
6、ype testing and manufacture of the ferrule and the specification of the method of application to wire ropes. 4 Types of wire ropes All steel wire ropes for general purposes complying with IS0 2408 may be fitted with a ferrule-secured eye termination; however, the rope shall be suitably pre-formed fo
7、r Flemish eyes and pre-forming is also recommended for turn back loops. 5 Ferrules Electric welding of steel tubes for ferrules used on the Flemish eye is permitted provided that the welding is carried out prior to the tube drawing and annealing operations. Ferrules of aluminium or copper shall be p
8、roduced by a process which gives a completely seam-free hollow product. Ferrules shall not have any defects which may affect the service performance. After pressing, the ferrule shall be free from any tendency to cracking by ageing. 1 Copyright International Organization for Standardization Provided
9、 by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/28/2007 07:04:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 8793-1986 (El 6 Matching of ferrules to wire rope The matching of ferrules and wire ropes shall be in accord
10、ance with the instructions of the sponsor. 7 Preparation of the rope end The rope shall be cut in such a manner that the wire ends are not hardened or welded together. 8 Forming the eye 8.1 Turn back loop The sponsor shall give instructions regarding the correct positioning of the dead end of the ro
11、pe. The whole length of the ferrule shall contain the dead end of the rope and the dead end shall be visible after pressing. 8.2 Flemish eye The dead ends of the strands shall be long enough so that the ferrule can be pushed over them with the whole length of its cylindrical part. 9 Pressing operati
12、on The pressing operation shall be carried out in accordance with the instructions of the sponsor. IO Design requirements of the ferrule- secured eye termination The design breaking strength of a ferrule-secured eye termina- tion (Flemish eye or turn back loop) shall be at least 90 % of the minimum
13、breaking force of the respective wire rope. 11 Prototype tests Samples of each type of ferrule shall have passed the tests described in 11.1 and 11.2. 11.1 Tensile test to destruction Two tests shall be carried out on each size of fibre-cored and steel-cored wire ropes for which the system is recomm
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 8793 1986
链接地址:https://www.31doc.com/p-3781355.html