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SAE J1748 Methods for Determining Physical Properties of Polymeric Materials Exposed to Hydrocarbon Fuels or Their Surro

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Product Code:SAE J1748
Title:Methods for Determining Physical Properties of Polymeric Materials Exposed to Hydrocarbon Fuels or Their Surrogates and Their Blends with Oxygenated Additives
Issuing Committee:Fuel Systems Standards Committee
Scope:This SAE Recommended Practice applies to determining worst-case fuel, conditioning test specimens in worst-case fuel(s) prior to testing, individual tests for properties of polymers exposed to methanol-gasoline fuel mixtures. The determination of equilibrium, as well as typical calculations are also covered.Polymers are used in applications which require exposure to a variety of fluid environments. Tests to determine the effects of such exposure on material properties are well established. However, the determination of the effects on polymers exposed to fuels of variable alcohol and ether content poses new problems. This document seeks to address those concerns by detailing changes to standard tests that make them suitable for that purpose.
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基本信息
标准名称:采掘机械用截齿
英文名称:Pick for shearer and boom roadheader
中标分类: 矿业 >> 矿山机械设备 >> 煤矿专用设备器材
ICS分类: 采矿和矿产品 >> 采矿设备 >> 其他采矿设备
替代情况:替代MT/T 246-1996
发布部门:国家发展和改革委员会
发布日期:2006-08-19
实施日期:2006-12-01
首发日期:
作废日期:
主管部门:国家发展和改革委员会
提出单位:中国煤炭工业协会科技术发展部
归口单位:煤炭行业煤矿专用设备标委会
起草单位:煤炭科学研究总院上海分院
起草人:陶峥、刘建平、吕剑海
出版社:煤碳工业出版社
出版日期:2006-12-01
页数:17页
适用范围

本标准规定了采掘机械用截齿的术语和定义、产品分类、要求、试验方法、检验规则、标志、包装、运输和贮存
本标准适用于截割坚固性系数f不大于6(单项抗压强度不大于60同MPa)的煤和夹矸的煤矿采煤机掘进机使用的截齿。

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所属分类: 矿业 矿山机械设备 煤矿专用设备器材 采矿和矿产品 采矿设备 其他采矿设备
Product Code:SAE AMS5932
Title:Steel, Corrosion and Heat Resistant, Bars, Forgings and Tubing 14.5cr 2.3ni 12.5co 4.0mo 0.60v 0.03cb(Nb), Carburizing, Premium Aircraft-Quality, Double Vacuum Melted
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a premium aircraft-quality corrosion and heat-resistant steel in the form of bars, forgings, mechanical tubing, and forging stock.