This part specifies the dimensions and tolerances of gaskets for die casting moulds. This part is applicable to gaskets for die casting moulds. This part also gives material guidelines and specifies the marking of gaskets. GB/T 4678.15-2003 Die casting mould parts Part 15: Gaskets GB/T4678.15-2003 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: Limit pin;
Part 15: Cushion;
Part 16: Flat push rod;
Part 17: Push tube;
Part 18: Support column;
Part 19: Positioning element.
This part is Part 15 of GB/T 4678. Foreword
This part replaces GB/T 4678.15--1984 "Cushion for die casting parts". Compared with GB/T4678.15-1984, this part has the following major changes: GB/T 4678.15-—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.
The size specification series has been modified, and the large size specification series has been added. The material has been changed to recommended selection.
The geometric tolerance requirements have been modified one by one. bZxz.net
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, and Li Hongying. This part was first issued in September 1984 and revised for the first time in 2003. 63
GB/T4678.15--2003
1 Scope
Die casting die parts Part 15: Pads
This part specifies the dimensions and tolerances of pads for die casting dies. This part applies to pads used in die casting dies. This part also gives material guidelines and specifies the marking of pads. 2 Normative references
The clauses in the following documents become clauses of this part through reference to this part of GB/T4678. 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/T1184—1996 Tolerance of shape and position Unspecified tolerance value GB/T4679—2003 Technical conditions for die casting parts 3 Dimensions and specifications
See Figure 1 and Table 1.
Surface roughness in microns
Unspecified surface roughness Ra=6.3um; all edges chamfered 2mm×45°Pad block
4 Material
The material is selected by the manufacturer, and 45 steel is recommended. 5 Technical requirements
5.1 The shape and position tolerances of the reference surface shall comply with the provisions of GB/T1184-—1996, and shall be Grade 5 accuracy. 5.2 The rest shall comply with the provisions of GB/T4679—2003. 64
The pads according to this part shall be marked as follows: a) Pad;
Pad length L1, L2, in millimeters; Pad thickness H. in millimeters;
Table 1 Pad
d) Code of this part, i.e. GB/T4678.15-2003. Example:
The pad with L,=200 mm, L2=80 mm, H=32 mm is marked as follows: Pad 200×80×32GB/T4678.15-200380
GB/T4678.15-2003
Unit is millimeters
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