This part specifies the dimensions and tolerances of push rods for die casting dies. This part applies to push rods for die casting dies. This part gives material guidelines and hardness requirements and specifies the marking of push rods. GB/T 4678.11-2003 Die casting die parts Part 11: Push rods GB/T4678.11-2003 Standard download decompression password: www.bzxz.net

GB/T 4678.11-2003
GB/T4678 "Die Casting Die Parts" is divided into 19 parts: Part 1: Templates;
Part 2: Round inserts;
Part 3: Rectangular inserts;
Part 4: Shouldered guide pins;
——Part 5: Headed guide pins;
Part 6: Headed guide bushings;
——Part 7: Straight guide bushings;
Part 8: Ejector plates;
Part 9 Part: Push plate guide column;
Part 10: Push plate guide sleeve;
Part 11: Push rod;
Part 12: Reset rod;
Part 13: Push plate washer;
Part 14: Limit pin;
Part 15: Spacer;
Part 16: Flat push rod;bzxz.net
Part 17: Push tube;
Part 18: Support column;
Part 19: Positioning element.
This part is Part 11 of GB/T 4678. Foreword
This part replaces GB/T 4678.11-1984 "Push rod for die casting parts". Compared with GB/T4678.11--1984, the main changes of this part are as follows: the arrangement of the standard has been greatly modified, "Foreword", "Scope" and "Normative Reference Documents" have been added, and the content of the mark should be specified.
A type of push rod (type A) has been added, which is divided into type A push rod and type B push rod. The size specification series has been modified, and a large size specification series has been added. - Material has been changed to recommended selection.
- Surface roughness replaces the smoothness in the original standard. This part was proposed by the China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Technical Committee for Standardization of Die (SAC/TC33). The drafting units of this part are: Shanghai Pierburg Nonferrous Parts Co., Ltd., Guangzhou Cavity Die Factory, Guilin Electrical Science Research Institute, Dongfeng Technology Automotive Braking System Company, Chengdu Xingguang Die Casting Industry Co., Ltd. The main drafters of this part are: Zhang Liangen, Cai Zijin, Weng Shizhen, Feng Bochun, Liao Hongyi, Yang Zhaoling, Huang Zhilu, Li Hongying. This part was first published in September 1984 and revised for the first time in 2003. 46
1 Scope
Die casting die parts
Part 11: Push rods
This part specifies the dimensions and tolerances of push rods for die casting dies. This part applies to push rods used in die casting dies. This part also gives material guidelines and hardness requirements, and specifies the marking of push rods. 2
Normative references
GB/T 4678,11—2003
The clauses in the following documents become clauses of this part through reference to this part of GB/T 4678. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version of the document applies to this part. GB/T4679--2003 Technical conditions for die casting parts 3 Dimensions and specifications
3.1 Type A push rod
See Figure 1 Table 1
Surface roughness in microns
Not specified Surface roughness Ra=6.3μm.
No center hole is allowed on the end face.
Figure 1 Type A push rod
Table 1 Dimensions of type A push rod
Unit: millimeters
GB/T 4678.11-—2003
Unit: millimeters
Table 1 (continued)
2 Type B push rod
See Figure 2 and Table 2.
Surface roughness in microns
Not specified Surface roughness Ra=6.3μm.
No center hole is allowed on the end face.
Figure 2 Type B push rod
Unit: mm
Table 2 Type B push rod dimensions
4Material and hardness
Material is selected by the manufacturer, 4Cr5MoSiV1, 3Cr2W8V are recommended. Hardness 45HRC～50HRC.
GB/T 4678.11—2003
After quenching, the surface can be nitrided, the depth of the nitrided layer is 0.08mm~~0.15mm, the core hardness is 40HRC~~44HRC, and the surface hardness is ≥900 HV.
5Technical requirements
Should meet the requirements of GB/T4679—2003. 6 Marking
Push rods according to this part should have the following markings: a)
Push rod:
Push rod type A, B;
Push rod diameter D, in millimeters;
Push rod length L, in millimeters;
Push rod head thickness h, in millimeters; f) Code of this part, i.e. GB/T4678.11-2003. Example 1:
D=3 mm, L80 mm, h=5 mm, type A push rod is marked as follows: push rod A3
3X80X5GB/T4678.11--2003
Example 2:
D=3mm, L=80mm, h-5mm, type B push rod is marked as follows: push rod B3×80×5
GB/T 4678. 11--2003
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.