GB/T 2856.3-1990 Die rolling guide die seat intermediate guide column upper die seat

GB/T 2856.3-1990 Punch die rolling guide die seat intermediate guide pin upper die seat GB/T2856.3-1990 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Punch rolling guide die set
Intermediate guide pillar upper die set
Holder for ball slide die sets for press toolsPunch holder for center pillar setsSubject content and scope of application
GB/T 2856.3—90
Replaces GB2856.3—81
This standard specifies the materials, technical conditions, structural types and specifications of the intermediate guide pillar upper die set of the punch rolling guide die set. This standard applies to the punch rolling guide die set. 2 Reference standards
GB/T12446 Technical conditions for die set parts GB9439 Grey cast iron parts
3 Materials, technical conditions, structural types and specifications of die sets3.1 Material: HT200GB9439.
Aging treatment twice.
3.2 Technical conditions shall be in accordance with the provisions of GB/T12446. 3.3 The structural type and specifications are shown in the table.
Approved by the State Administration of Technical Supervision on July 23, 1990 and implemented on May 1, 1991
Die hole depth 14bzxz.net
≥160
GB/T 2856.3—90
3.4 ​​Marking example:
Die perimeter L=200mm, B=160mm, thickness H=45mm, middle guide pin upper die seat: upper die seat 200×160×45GB/T2856.364
Die perimeter
Additional instructions:
GB/T2856.3—90
This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Die Standardization. Limit
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 Huachang and Qin Guangwei. Limit
This standard is entrusted to the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry for interpretation. 25.5
M6---6H
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