GB/T 2856.4-1990 Die rolling guide die seat intermediate guide column lower die seat

GB/T 2856.4-1990 Punch die rolling guide die seat intermediate guide column lower die seat GB/T2856.4-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Die rolling guide die set
Intermediate guide pillar lower die set
Holder for ball slide die sets for press toolsDle holder for center pillar setsSubject content and scope of application
GB/T 2856.490
Replaces GB2856.4-81
This standard specifies the materials, technical conditions, structural types and specifications of the intermediate guide pillar lower die set of the die rolling guide die set. This standard applies to the die rolling guide die set. 2 Reference standards
GB/T12446 Technical conditions for die set parts GB9439bZxz.net
Grey cast iron parts
8 Materials, technical conditions, structural types and specifications of die sets8.1 Material: HT 200 GB 9439.
Aging treatment twice.
8.2 Technical conditions are in accordance with the provisions of GB/T1
Structural types and specifications are shown in the figure and table.
Approved by the State Administration of Technical Supervision on July 23, 199066
Implementation on May 1, 1991
3.4 ​​Marking example
GB/T2856.4 -90
Die perimeter L=200mm,
B=160mm, thickness H=55mm, intermediate guide column lower die seat: lower die seat 200×160×55GB/T2856.4BB
Die perimeter
GB/T2856.4—-90
1303640
Note: The shape and plane dimensions of the platen are determined by the manufacturer. 50
Additional Notes:
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. Basic
d,(R7)
This standard is under the jurisdiction of the National Technical Committee for Mold Standardization. This standard was drafted by the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wang Huayi and Qin Guangwei. This standard is entrusted to the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry for interpretation. 68
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