AGMA 923-B05 PDF

This information sheet identifies specifications and requirements for various metallurgical quality grades for through hardened, carburize and hardened, induction and flame hardened, and nitrided gearing. Characteristics covered include raw material, heat treatment and post heat treat processing, and their associated inspections. Topics related to gear design and rating, such as case depth, stress numbers, and quality control sampling plans are not included in this document. Effort was made to reference ISO specifications where possible. The consolidated tables were submitted to the gear rating committees for their agreement and are published here for reference by other standards. AGMA A00 was such a document, and was intended to be consistent with the applicable portions of ISO , to the extent possible while the two standards were in parallel development.

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This information sheet identifies specifications and requirements for various metallurgical quality grades for through hardened, carburize and hardened, induction and flame hardened, and nitrided gearing. Characteristics covered include raw material, heat treatment and post heat treat processing, and their associated inspections. Topics related to gear design and rating, such as case depth, stress numbers, and quality control sampling plans are not included in this document.

Effort was made to reference ISO specifications where possible. The consolidated tables were submitted to the gear rating committees for their agreement and are published here for reference by other standards. AGMA A00 was such a document, and was intended to be consistent with the applicable portions of ISO , to the extent possible while the two standards were in parallel development.

This edition of the information sheet, AGMA B05, incorporates changes to item 8, microstructure, of table 1, Metallurgical characteristics for through hardened gearing. The balance of the document remains unchanged. Suggestions for improvement of this standard will be welcome. At the time of initial development, the editions shown were valid. All standards are subject to revision, and parties to agreements based on this document are encouraged to investigate the possibility of applying the most recent editions of the standards shown below.

FAY WELDON DIABLICA PDF

AGMA 923-B05

Retained temperature is above the martensite start trans- austenite is not included in the quantitative formation temperature, typically -- F -- metallographic measurement of non--martensitic C , held at this temperature until temperature is structures. Marquenching is used to achieve non--martensitic transformation products: Inclu- reduced distortion when compared to conventional sive terminology for ferrite, cementite, pearlite, and quenching. See figure 10 for a austenite. Martensite is characterized by an acicular photograph of non--martensitic transformation prod- or needle--like pattern in the microstructure and is ucts in martensite. D is the height of the upset blank after upset- process control test coupon: For carburize and ting before piercing, inch mm ; hardened gearing or nitrided gearing, a test coupon E is the height of the upset blank after piercing, used primarily to monitor the consistency of the heat inch mm ; treatment process in terms of carbon or nitrogen F is the wall thickness of the upset blank after penetration and case microstructure.

FAEFEVER BY KAREN MARIE MONING PDF

AGMA-923-B05

Measurement of surface hardness per ASTM E18 is used as a nondestructive method to evaluate the conformity of individual work pieces to the surface hardness requirements. The measurement method should be appropriate for the size and configuration of the work pieces. The teeth area requirements for hardness measurements include the root of the tooth. Method 2 -- Combustion The combustion method utilizes chips from a machining cut of 0. Both methods require that prior to carburizing the process control specimen, sufficient stock be machined from the surface to be carburized, in order to remove all material with non--uniform surface chemistry. Test coupons -- Microstructure, microhardness and core hardness characteristics may be determined from either actual parts or test coupons.

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