This part specifies the dimensions and tolerances of shoulder guide pins for die casting moulds. This part applies to shoulder guide pins and push plate guide pins used in die casting moulds. This part also gives material guidelines and hardness requirements, and specifies the marking of shoulder guide pins. GB/T 4678.4-2003 Die casting mould parts Part 4: Shoulder guide pins GB/T4678.4-2003 Standard download decompression password: www.bzxz.net

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1 Scope
Die casting parts Part 4: Shoulder guide pins
This part specifies the size specifications and tolerances of guide pins for die casting. This part is applicable to guide pins and push plate guide pins for die casting. This part gives the material guide and convenience requirements, and specifies the marking of shoulder guide pins. 2 Normative references
The clauses in the following documents become clauses of this part through reference in this part of H468. For any old dated referenced document, all subsequent versions (excluding errors) or waiting versions shall not apply to this part. However, the latest versions of these documents shall apply to any undated referenced document. Technical conditions for pressed mould parts GB/T 4679-2003 Dimensional specifications See Figure 1 and Table 1. Surface coverage is in meters. Note: Surface integrity Ra-5.3/m: Unadjusted mm×45° Can be increased or filled with oil grooves. The center holes at both ends are allowed to be retained.
Figure 1 Guide column with shoulder
Table 1 Dimensions of guide column with shoulder
GB/T 4678.4—2003
Unit: meterwwW.bzxz.Net
GR/T 4678.4m70C3
Material and source material are selected by the manufacturer, recommended 119AGCr5 inverter 50 HRC--56 HR. Technical requirements The material should be in accordance with the provisions of GT4379, 2003. According to this part, the strip should have the following markings: a) The strip should be marked with the following markings: The strip diameter D is in meters: The strip length is 1 meter, (B4678.42C03, 1=15mm, L=63m, L,-25, and the strip shoulder should be marked as follows: 5X53:3GB/T67A.1—2003
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