GB/T 4678.1-2003 Die casting parts Part 1: Template

This part specifies the dimensions and tolerances of templates for die casting dies. This part applies to sleeves, seat plates and support plates used in die casting dies. This part also gives material guidelines and hardness requirements, and specifies the marking of templates. GB/T 4678.1-2003 Die casting die parts Part 1: Templates GB/T4678.1-2003 Standard download decompression password: www.bzxz.net

1 Scope
Die casting die parts Part 1: Templates
This part specifies the dimensions and tolerances of templates for die casting dies. This part applies to sleeves, seat plates and support plates used in die casting dies. This part also gives material guidelines and hardness requirements, and specifies the marking of templates. 2 Normative references
GB/T 4678.1—2003
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. bzxZ.net
GB/T1184—1996 Tolerance of shape and position without tolerance value GB/T1801—1999 Limit and fit Tolerance zone and fit selection GB/T4679-2003 Technical conditions for die casting parts 3 Dimensions and specifications
See Figure 1 and Table 1.
Surface roughness in microns
All edge chamfers 2mm×45°
4 Material and hardness
The material is selected by the manufacturer, and 45 steel is recommended. The hardness of the sleeve and support plate is 25HRC～32HRC. Figure 1 Template
GB/T4678.1—2003
1 0001 100
1 2501 400
1 100/1 100
5 Technical requirements
Table 1 Template size
The tolerance grade of template size shall comply with the provisions of js10 grade in GB/T1801—1999. 125
Unit is mm
5.2 When used as a set plate, the geometric tolerance of the reference surface shall comply with the provisions of GB/T1184-1996, t1 and t3 are grade 5 accuracy, and t2 is grade 7 accuracy. When used as a seat plate or a supporting plate, the geometric tolerance grade shall be determined according to GB/T1184-H. 5.3 The rest shall comply with the provisions of GB/T4679—2003. 6 Marking
The templates according to this part shall have the following markings: a) Template;
Template length L, I2, in millimeters; b)
Template thickness H, in millimeters;
d) Code of this part, i.e. GB/T4678.1—2003. Example:
The template with L,=200mm, L2=200mm, H=20mm is marked as follows: 200X200X20GB/T 4678.1—2003
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