GB/T 1231-1991 钢结构用高强度大六角头螺栓,大六角螺母,垫圈技术条件

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基本信息
标准名称:钢结构用高强度大六角头螺栓,大六角螺母,垫圈技术条件
英文名称:Specifications of high strength bolts with large hexagon head, large hexagon nuts,plain washers for steel structures
中标分类: 机械 >> 通用零部件 >> 紧固件
ICS分类: 机械系统和通用件 >> 紧固件
替代情况:替代GB 1231-1984;被GB/T 1231-2006代替
发布部门:国家技术监督局
发布日期:1991-04-22
实施日期:1992-01-01
首发日期:1976-02-10
作废日期:2006-11-01
主管部门:中国机械工业联合会
归口单位: 全国紧固件标准化技术委员会
起草单位:铁道部科研院
出版社:中国标准出版社
出版日期:1992-01-01
页数:9页
适用范围

本标准规定了钢结构用高强度大六角头螺栓、大六角螺母、垫圈及连接副的技术要求、试验方法、检验规则、标记及包装。本标准适用于铁路和公路桥梁、锅炉钢结构、工业厂房、高层民用建筑、塔桅结构、起重机械及其他钢结构摩擦型高强度螺栓连接。

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所属分类: 机械 通用零部件 紧固件 机械系统和通用件 紧固件
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基本信息
标准名称:电力金具 标称破坏荷重系列及零件联结尺寸
英文名称:Fittings nominal failing load series and coupling dimension
中标分类: 电工 >> 发电用动力设备 >> 电站设备自动化装置
替代情况:替代GB 2315-80;被GB/T 2315-2000替代
发布日期:1985-01-23
实施日期:1985-12-01
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起草单位:水利电力部南京电力金具设计研究所
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适用范围

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所属分类: 电工 发电用动力设备 电站设备自动化装置
Product Code:SAE ARP1675
Title:Structural Weldbonding of Aluminum Structures
Issuing Committee:Ams P17 Composite Materials Committee
Scope: This SAE Aerospace Recommended Practice describes the aluminum weldbonding process for fabrication of secondary aircraft structural assemblies possessing excellent strength, fatigue life, and environmental durability. The nature of the weld nugget, produced by resistance weldbonding, provides microcrack initiators and propagators which compromise the fatigue life. Additional development work is required to validate this process for each primary aircraft structure. This manufacturing process has been developed and validated for high strength bare aluminum alloys AMS-4037 and AMS-4045 within the thickness gages of 0.020 to 0.125 in (0.51 to 3.48 mm). It is expected to be applicable to other bare aluminum alloys and tempers. The use of this process is not recommended for clad or mixed bare-clad alloy systems because of decreased environmental durability. The surface preparation system has been validated for use with 80 degrees C (176 degrees F) service temperature modified epoxy paste adhesive which cures at 120 to 125 degrees C (248 to 257 degrees F). The adhesive contains a radio-opaque substance, strontium chromate, which permits nondestructure examination for bondline voids by X-radiography.e surface preparation system has been validated for use with 80 degrees C (176 degrees F) service temperature modified epoxy paste adhesive which cures at 120 to 125 degrees C (248 to 257 degrees F). The adhesive contains a radio-opaque substance, strontium chromate, which permits nondestructure examination for bondline voids by X-radiography.