JB/T 9043.2-1999 ZZ 行星齿轮减速器

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标准名称：	热喷焊用Ni-Cr-B-Si系+WC自熔合金粉
中标分类：	冶金 >> 粉末冶金 >> 金属与合金粉末
ICS分类：	冶金 >> 粉末冶金
发布部门：	中国有色金属工业总公司
发布日期：	1993-03-17
实施日期：	1994-04-01
首发日期：
作废日期：	2010-01-20
提出单位：	中国有色金属工业总公司
起草单位：	冶金工业部钢铁研究总院
起草人：	艾宝仁、朱瑞珍、姜振春、柳春兰、李忠全
出版日期：	1994-04-01
页数：	5页

本 标 准 规定了热喷焊用Ni-Cr-B-Si系+we自熔合金粉的产品分类、技术要求、试验方法、检验规
则、标志、包装、运输和贮存.
本标准适用于氧一乙炔和等离子喷焊用Ni-Cr-B-Si系+we自熔合金粉。

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Product Code:SAE AIR1168/4
Title:Ice, Rain, Fog, and Frost Protection
Issuing Committee:Ac-9c Aircraft Icing Technology Committee
Scope: The ability of aircraft to fly in adverse weather conditions is a requirement for most military and commercial aircraft. Ice buildups in critical areas can affect flight safety by adding drag and weight and thus adversely affecting stability. Supercooled water droplets may exist in clouds at ambient temperatures far below the freezing point. When the droplets are disturbed by an aircraft flying through them, the droplets will impinge and may freeze on airfoil surfaces, radomes, engine inlets, windshields, and other areas, resulting in weight and drag penalties or obstruction of vision through transparent surfaces. Some means, therefore, must be provided to prevent large ice buildups in critical areas. The inner surfaces of most cockpit transparencies are susceptible to condensation in the form of fog or frost during most normal aircraft operation, particularly when descending from high altitude flight, unless fog and frost protection systems are provided. Fog will form on the inside surface of the windshield whenever that surface is below the cockpit air dew point. If the surface temperature is below 32 degrees F, frost will form. Removal of rain from the windshields to maintain pilot visibility is accomplished by hot air jet blast or by windshield wipers. A rain repellent fluid is sometimes used in conjunction with either system for increased rain removal efficiency.
Rationale: The ability of aircraft to fly in adverse weather conditions is a requirement for most military and commercial aircraft. Ice buildups in critical areas can affect flight safety by adding drag and weight and thus adversely affecting stability. Supercooled water droplets may exist in clouds at ambient temperatures far below the freezing point. When the droplets are disturbed by an aircraft flying through them, the droplets will impinge and may freeze on airfoil surfaces, radomes, engine inlets, windshields, and other areas, resulting in weight and drag penalties or obstruction of vision through transparent surfaces. Some means, therefore, must be provided to prevent large ice buildups in critical areas. The inner surfaces of most cockpit transparencies are susceptible to condensation in the form of fog or frost during most normal aircraft operation, particularly when descending from high altitude flight, unless fog and frost protection systems are provided. Fog will form on the inside surface of the windshield whenever that surface is below the cockpit air dew point. If the surface temperature is below 32 degrees F, frost will form. Removal of rain from the windshields to maintain pilot visibility is accomplished by hot air jet blast or by windshield wipers. A rain repellent fluid is sometimes used in conjunction with either system for increased rain removal efficiency.