JB/T 9179.5-1999 JB/T 9179.5-1999 Machining allowances and tolerances of free forgings on hydraulic presses Short cylindrical JB/T9179.5-1999 Standard download decompression password: www.bzxz.net

JB/T 9179.5—1999
This standard is a revision of ZBJ32003.5--88 "Machining allowances and tolerances of free forgings on hydraulic presses". The original text has been edited, and the main technical content has not changed. This standard replaces ZBJ32003.5--88 from the date of implementation. wwW.bzxz.Net
This standard is proposed and managed by the National Technical Committee for Forging Standardization. The responsible drafting unit of this standard: Shanghai Heavy Machinery Plant. The main drafters of this standard: Wang Qianhe and Xie Peide. Short Cylinders". Under revision
1 Scope
Machinery Industry Standard of the People's Republic of China
Machining allowances and toferances of open die forgings on hydraulic press-Short round shaft
Machining allowances and toferances of open die forgings on hydraulic press-Short round shaft This standard specifies the allowances and tolerances of open die forgings on hydraulic press-Short round shaft. This standard is applicable to short cylindrical forgings with 1.0D≤H,≤1.5D. 2 Referenced standards
JB/T9179.5—1999
Replaces ZB J32 003. 5-88
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T9179.4:1999 Machining allowances and tolerances for self-forgings on hydraulic presses Disc and punching type 3 allowances and tolerances
Machining allowances and tolerances for free forgings of short cylindrical type shall comply with the provisions of Figure 1 and Table 1 and Table 2 of JB/T9179.4--1999. ng
Approved by the State Machinery Industry Bureau on June 24, 1999 374
Implemented on January 1, 2000
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