JB/T 9179.6-1999 JB/T 9179.6-1999 Machining allowances and tolerances for free forgings on hydraulic presses Module JB/T9179.6-1999 Standard download decompression password: www.bzxz.net

JB/T9179.6—1999
This standard is a revision of ZBJ32003.6--88 "Machining allowances and tolerances of free forgings on hydraulic presses". The original text has been edited and the main technical contents have been modified as follows: - Cancel the original Table 1 and adopt Table 1 in JB/T 9179.2--1999. This standard replaces ZBJ32003.688 from the date of implementation. 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. Module Class". In revision
1 Scope
Machinery Industry Standard of the People's Republic of China
Machining allowances and tolerances of open die forgings on hydraulic press-Dieblock
Machining allowances and tolerances of open die forgings on hydraulic press-Dieblock
This standard specifies the allowances and tolerances of open die forgings on hydraulic press-Dieblock. JB/T 9179.6--1999bzxZ.net
ZI3 J32003.6--88
This standard is applicable to module forgings with part dimensions of A≤B≤L, L≤1.5B, L≤2.5A and flat end faces. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard was published, the versions shown were all valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standards JB/T9179.2--1999 Machining allowances and tolerances for free forgings on hydraulic presses Machining allowances and tolerances for cylindrical, square shaft and rectangular cross-section types 3
Machining allowances and tolerances for free forgings of modular type shall comply with Figure 1 and Table 1 of JB/T9179.2-1999. p90
Approved by the State Machinery Industry Bureau on June 24, 1999 376
Implemented on January 1, 2000
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