GB/T 2861.11-1990 Die guide cylindrical helical compression spring

GB/T 2861.11-1990 Die guide cylindrical helical compression spring GB/T2861.11-1990 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Guide unit for press tools
Cylidrical coil compression springSubject content and scope of applicationWww.bzxZ.net
GB/T 2861.11—90
Replaces GB2861.11-81
This standard specifies the materials, heat treatment, technical conditions, structural types and specifications of cylindrical coil compression springs for die guides. This standard applies to die rolling guide die sets. 2 Reference standards
GB/T12446 Technical conditions for die set parts GB1222 Spring steel
3 Materials, heat treatment, technical conditions, structural types and specifications of springs3.1 Material: 65MnGB 1222.
3.2 Heat treatment: hardness HRC44～50.
3.3 Technical conditions shall be in accordance with the provisions of GB/T12446. 3.4 Structural types and specifications are shown in the figure and table.
3.5 Marking example:
Cylindrical helical compression spring with steel wire diameter d = 1.6mm, median diameter D, = 22mm, length H. = 72mm: Spring 1.6×22×72GB/T2861.11
Approved by the State Administration of Technical Supervision on July 23, 1990, implemented on May 1, 1991
Note. The two end surfaces are tightened by one circle and flattened.
Additional instructions:
GB/T 2861.11~-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 Mold Standardization Technical Committee. Effective
This standard is 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 Huajing 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 to interpret. 124
Elastic stiffness
p(kgf/mm)
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