GB/T 21471-2008 Active National standards

GB/T 21471-2008 Machining allowances and tolerances for steel open die forgings on hammer—Shafts

Publish Date: 2008-02-28 Implement Date: 2008-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21471-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Forging and pressing

ICS Name: \nSteel forgings

Publish Date: 2008-02-28

Implement Date: 2008-08-01

Pages: 13 pages

Scope

This standard specifies the machining allowances and tolerances for free forgings of optical axes, stepped axes, and single-bend axes, as well as the allowable limit deviations of black skin forgings.
This standard applies to free forgings of carbon steel and alloy steel with a carbon content not exceeding 0.9% and a total content of other alloy elements not exceeding 4%.
For free forgings that exceed the scope specified in this standard, the allowances and tolerances shall be determined through separate negotiations between the supplier and the purchaser.

Development Information

Word Count: 22 Thousand words Pages: 13 pages

Replace the following standards

GB/T 15826.6-1995 Machining allowances and tolerances for steel open die forgings on hammer—Shaft without steps GB/T 15826.7-1995 Machining allowances and tolerances for steel open die forgings on hammer—Shaft with steps GB/T 15826.8-1995 Machining allowances and tolerances for steel open die forgings on hammer—Single throw crankshaft GB/T 15826.9-1995 Machining allowances and tolerances for steel open die forgings on hammer—Forging without machining

Referenced Standards

GB/T 21469-2008 Machining allowances and tolerances for steel open die forgings on hammer—General requirement JB/T 9179.2-2013 Hydraulic press mechanical machining allowance and tolerance for steel free forging part 2: Round shaft, square shaft and rectangular cross-section types JB/T 9179.3-2013 Hydraulic press machining allowance and tolerance for steel free forgings Part 3: Step shafts JB/T 9179.2-1999 The allowance and tolerance for mechanical processing of free forgings on a hydraulic press for round, square, and rectangular cross-section types JB/T 9179.3-1999 JB/T 9179.3-1999 - Mechanical machining allowance and tolerance for stepped shafts of free forging on hydraulic press

Related Standards

GB/T 13320-2007 Active

GB/T 13320-2007 Metellographic grading atlas and assessing method for steel die forgings

Publish Date: 2007-04-18

GB/T 20911-2007 Active

GB/T 20911-2007 Semi finished products for forging—Tolerances on dimensions shape and mass

Publish Date: 2007-04-18

GB/T 21469-2008 Active

GB/T 21469-2008 Machining allowances and tolerances for steel open die forgings on hammer—General requirement

Publish Date: 2008-02-28

GB/T 21470-2008 Active

GB/T 21470-2008 Machining allowances and tolerances for steel open die forgings on hammer—Disks,columns,rings and seamless cylindrical sleeves

Publish Date: 2008-02-28

GB/T 22131-2008 Replaced

GB/T 22131-2008 Practice for ultrasonic examination from bored surfaces of cylindrical forgings

Publish Date: 2008-06-25

GB/T 25135-2010 Active

GB/T 25135-2010 The quality control criterion of forging technology

Publish Date: 2010-09-26