ASTM B947-14(2020)e1

Podrobné informácie

Označenie: ASTM B947-14(2020)e1

Dátum vydania: 01.12.2014

Stránok: 4

Krajina: Americká technická norma

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Anotácia

This practice covers hot rolling solution heat treatment for aluminum alloy plate. Aluminum alloy ingots or rolling slabs are preheated prior to being hot rolled. Controls shall be adequate to ensure that the equipment is operated in a manner which precludes overheating of the ingot or rolling slab or deleterious contamination by the furnace environment. Metal temperature shall be monitored and controlled to not exceed the maximum temperature prescribed. Non-contact sensors shall be calibrated prior to initial use by an ISO 17025 or A2LA. Noncontact sensors must be compared weekly under operating conditions and temperature to the SAT test instrument/sensor. The accuracy of temperature measuring system(s) shall be tested under operating conditions at least once during each week that the facility is used. For continuous or batch furnaces, the type of survey and procedures for performing the survey shall be established and documented for each particular furnace or furnace type involved. The hot rolling mill solution heat treatment procedures are presented in details. The mechanical properties shall be determined in accordance with test method B557 or B557M. Tensile tests shall be representative of the thinnest and the thickest material to be heat treated; intermediate thickness samples shall be included when necessary to ensure proper production hot rolling mill solution heat treatment. Whenever any qualified equipment is changed or reworked, it shall be requalified unless it is known that the change or rework will not have a detrimental effect upon the properties of products.


Keywords:
aluminum alloys, hot rolling, hot rolling mill solution heat treatment, slab, solution heat treatment,, ICS Number Code 77.150.10 (Aluminium products)