This part specifies the dimensions and tolerances of stop pins for die casting moulds. This part is applicable to stop pins for die casting moulds. This part also gives material guidelines and hardness requirements, and specifies the marking of stop pins. GB/T 4678.14-2003 Die casting mould parts Part 14: Stop pins GB/T4678.14-2003 Standard download decompression password: www.bzxz.net

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: Push plates;
Part 9: Push plate guide pins; || tt||Part 10: Push plate guide sleeve;
Part 11: Push rod;
Part 12: Reset rod;
Part 13: Push plate washer;
-Part 14: Stop pin;
Part 15: Spacer;
-Part 16: Flat push rod;
-Part 17: Push tube;
-Part 18: Support column;
-Part 19: Positioning element.
This part is Part 14 of GB/T 4678. ForewordbZxz.net
This part replaces GB/T 4678.14--1984 "Stop pins for die casting parts". Compared with GB/T4678.14-1984, the main changes of this part are as follows: GB/T 4678.14-2003
has made major changes in the arrangement of the standard, adding "Foreword", "Scope" and "Normative Reference Documents", and specifying the content of the mark.
Material is changed to recommended selection.
Surface roughness replaces the smoothness in the original standard. This part is 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: 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: Zhang Liangen, Cai Zijin, Weng Shizhen, Feng Bochun, Liao Hongyi, Yang Zhaoling, Huang Zhilu, Li Hongying. This part was first issued in September 1984 and revised for the first time in 2003. 59
GB/T4678.14--2003
1 Scope
Die casting parts Part 14: Stop pins
This part specifies the dimensions and tolerances of stop pins for die casting. This part applies to stop pins used in die casting. This part also gives material guidelines and hardness requirements, and specifies the marking of stop pins. 2 Normative references
The clauses in the following documents become clauses of this part through reference to this part of GB/T4678. For dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest versions of these documents apply to this part.
GB/T46792003 Technical conditions for die casting parts 3 Dimensions
See Figure 1 and Table 1.
Surface roughness in micrometers
Surface roughness Rα=6.3μm without note; chamfer 1mmX45 without note. a Grinding wheel overtravel groove,
Figure 1 Limit pin
Material and hardness
The material is selected by the manufacturer, and 45 steel is recommended. Hardness 40 HRC～45 HRC.
5 Technical requirements
Should comply with the provisions of GB/T4679--2003. 6 Marking
The limit pins according to this part should have the following markings: a) Limit pin;
Limit pin diameter D, in millimeters;
Limit pin length h, in millimeters;
Table 1 Limit pin dimensions
d) Code of this part, i.e. GB/T4678.14-2003. Example:
D=12 mm, h=5 mm limit pin is marked as follows: Limit pin 12X5GB/T4678.14—2003
GB/T 4678.14—2003
The unit is millimeter
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