JB/T 8275-1999 16mm缩微摄影机技术条件

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标准名称：	金属和其他无机覆盖层热喷涂 锌、铝及其合金
英文名称：	Metallic and other inorganic coatings-Thermal spraying-Zinc、aluminium and their alloys
中标分类：	综合 >> 基础标准 >> 材料防护
ICS分类：	机械制造 >> 表面处理和涂覆 >> 金属镀层
替代情况：	GB 9793-1988 GB 9794-1988 GB 9795-1988 GB 9796-1988;被GB/T 9793-2012代替
发布部门：	国家技术监督局
发布日期：	1997-07-25
实施日期：	1998-02-01
首发日期：	1988-09-05
作废日期：	2013-03-01
主管部门：	中国机械工业联合会
提出单位：	中华人民共和国机械工业部
归口单位：	全国金属与非金属覆盖层标准化技术委员会
起草单位：	武汉材料保护研所
起草人：	胡有权、李秉忠、张海成、董志红、胡箭星
出版社：	中国标准出版社
出版日期：	2004-04-09
页数：	11页
书号：	155066.1-14446

本标准规定了防腐蚀用热喷涂锌、铝及其合金涂层的特性和试验方法。本标准适用于对钢铁表面施加热喷涂锌、铝及其合金涂层进行防腐蚀保护。本标准不适用于对损伤表面的修复。也不适用于热喷涂锌、铝及其合金之外的其他金属涂层，但其中的一些规定，对其他金属涂层也有效，若供需双方协商认可，也可采用。

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Product Code:SAE J772
Title:Clearance Envelopes for Six-Bolt, Eight-Bolt, and Rear Truck Transmission Mounted Power Takeoffs
Issuing Committee:Truck And Bus Power Take-Off Committee
Scope:The purpose of this document is to provide dimensions of clearance envelopes for various types of six-bolt regular-duty, eight-bolt heavy-duty, and side- and rear-mounted truck transmission power takeoffs. These envelopes are applicable to the clearance required immediately adjacent to the power takeoff openings on truck transmissions. Clearance envelopes are provided for the purpose of documenting current practice. It must be recognized that many current designs do not provide these clearances in all orientations and variations. New transmission and power takeoff designs should attempt to adhere to these envelopes where practical, but they should not be construed to be design restrictive; ultimately, the actual power takeoff clearance must be established for each application. In order to provide realistic envelope sizes, there are seven basic 脪types脫 of side-mounted P.T.O. envelopes and rear-mounted envelopes as shown in Table 1.All envelopes shown are basic and can be reversed for output to the front or rear of the vehicle. On Types II, III, IV, and VI, output shaft locations can additionally be reversed from that shown to the opposite side of the P.T.O. opening centerline. Driveline envelopes, front or rear, above or below centerline of opening as required, must be a cylinder of the minimum diameter shown and fall within the 15 degree maximum half-cone extending vertically up and down and horizontally outward from the driveline cone apex, for a distance equivalent to that required to bring the P.T.O. driveline beyond points of interference so that auxiliary equipment can be driven.Clearance should be provided on six-bolt openings on mechanical transmissions for Types I, II, and III with Types I and II being a minimum requirement.