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GB/T 12916-2024: Specification for marine metallic propeller
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 12916-2024	English	439	Add to Cart	4 days [Need to translate]	Specification for marine metallic propeller
GB/T 12916-2010	English	639	Add to Cart	3 days [Need to translate]	Specification for marine metallic propeller
GB/T 12916-1991	English	479	Add to Cart	4 days [Need to translate]	Specification for marine metallic propeller

GB/T 12916-2024: Specification for marine metallic propeller

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ICS 47:020:20 CCSU48 National Standards of People's Republic of China Replace GB/T 12916-2010 Technical requirements for marine metal propellers Released on 2024-04-25 2024-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting: This document replaces GB/T 12916-2010 "Technical Specifications for Marine Metal Propellers": Compared with GB/T 12916-2010, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows: a) The material names in propeller materials have been changed (see 5:3, 4:3 of the:2010 edition); b) Added technical requirements for stainless steel propellers (see 5:3, 6:10:2, 6:10:3); c) The roughness of the shaft hole after propeller machining has been changed (see 5:4:2, 4:4:2 of the:2010 edition); d) Added the requirement that the section radius of the propeller section width, local pitch and section thickness should be measured (see 5:5:1); e) Added requirements for the control position of the propeller local pitch measurement point (see 5:5:1); f) The geometric tolerance requirements for propeller blade pitch have been changed (see 5:5:1, 4:5:1 of the:2010 edition); g) The minimum tolerances for propeller radius, local pitch, cross-sectional pitch, blade pitch and overall pitch are increased (see 5:5:1); h) Corrected the error in the formula for calculating the minimum weight of the propeller in static balance (see 6:2:1, 6:2:2, 5:2:1, 5:2:2); i) Corrected the error in the propeller balancing fixture friction torque formula (see 6:2:3, 5:2:3 of the:2010 edition); j) The weight requirement for qualified counterweight in the propeller vertical balance test method has been changed (see 6:2:5, 5:2:5 of the:2010 edition); k) Added the requirements for dynamic balancing test of high-speed propellers (see 6:3); l) Added the requirements for completed propeller weight control (see 6:11): Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents: This document is proposed and coordinated by the National Technical Committee for Standardization of Marine Machinery (SAC/TC137): This document was drafted by: Wuhan Heavy Industry Casting and Forging Co:, Ltd: and China Shipbuilding Industry Corporation Comprehensive Technical and Economic Research Institute: The main drafters of this document are: Liu Qijun, Guo Xiongbin, Sun Meng, Wang Maochun, Lai Junxing, Xu Bin, Gao Xuetang, Yu Songlin, Qin Pengtao, and Yang Chun: This document was first issued in:1991, revised for the first time in:2010, and this is the second revision: Technical requirements for marine metal propellers

1 Scope

This document specifies the technical requirements, inspection methods, marking, packaging, storage and transportation of marine metal propellers (hereinafter referred to as propellers): This document is applicable to the manufacture of integral and combined fixed-pitch propellers, and shall be used as a reference for the manufacture of adjustable-pitch propellers:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document: For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document: GB/T 1176-2013 Cast copper and copper alloys GB/T 2100 General purpose corrosion resistant steel castings GB/T 7233:1-2023 Ultrasonic testing of steel castings Part 1: General purpose steel castings GB/T 7727:3 General terminology for ships and vessels GB/T 15822:1-2005 Non-destructive testing-Magnetic particle testing-Part 1: General principles CB/T 3095 Requirements for repair welding of civil copper alloy propellers CB/T 3290 Penetration test of copper alloy propellers for civil ships JB/T 6405-2018 Technical conditions for large stainless steel castings

3 Terms and definitions

The terms and definitions defined in GB/T 7727:3 and the following apply to this document: 3:1 Propeller radius radius of propeler The radius of the circle that the propeller blade tip traces when it rotates: 3:2 Radius of blade section The radius of the intersection of the propeller blade and the coaxial cylindrical surface on the propeller: 3:3 Width of blade section The developed width of the intersection of the propeller blade and the coaxial cylindrical surface: 3:4 local pitch propelerlocalpitch The product of the axial height difference between two points at different positions with a radial angle of β at the same cross-sectional radius on the pressure surface of the propeller blade and (360/β): 3:5 Pitch of blade section The arithmetic mean of the local pitch values on the intersection surface between the propeller blade and the coaxial cylindrical surface: ...