GB/T 2861.3-1990 C-type guide pin for die guide device GB/T2861.3-1990 Standard download decompression password: www.bzxz.net
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National Standard of the People's Republic of China Guide unit for press tools Guide plllars, type C Subject content and scope of application GB/T 2861,3-90 Replaces GB 2861.3-81 This standard specifies the materials, heat treatment, technical conditions, structural types and specifications of C-type guide pillars for press guide units. This standard applies to rolling guide die sets for press dies. Referenced standards Technical conditions for die set parts GB/T 12446 Technical conditions for YB9 chromium bearing steel 3 Materials, heat treatment, technical conditions, structural types and specifications for guide pillars 3.1 Material: GCr 15 YB 9. 3.2 Heat treatment: Hardness HRC 62~66. 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. Approved by the State Administration of Technical Supervision on July 23, 1990 and implemented on May 1, 1991Www.bzxZ.net 3.5 Marking example: GB/T 2861.3-—90 GB 145- 85 R* is determined by the manufacturer. C-type guide column with diameter d=25mm and length L=160mm: Guide column C25×160 GB/T 2861.3 Additional instructions: GB/T2861.3—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 on 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 Huachang 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. Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.