GB/T 4678.13-2018Die casting dies—Components—Part 13: Ejector plate washers (English PDF)

Foreword

GB/T 4678 "die-casting parts" is divided into 19 parts.

--- Part 1. Template;

--- Part 2. Round inserts;

--- Part 3. Rectangular inserts;

--- Part 4. square guide column;

---Part 5. Round guide column;

--- Part 6. Leading guide bushing;

--- Part 7. Straight guide sleeves;

--- Part 8. Push board;

---Part 9. Push plate guide column;

--- Part 10. Push plate guide sleeve;

--- Part 11. putter;

---Part 12. Reset lever;

---Part 13. Push plate washers;

--- Part 14. Limit nails;

---Part 15. Blocks;

---Part 16. Flat putter;

---Part 17. Pushing;

---Part 18. Support columns;

--- Part 19. Positioning elements.

This part is the 13th part of GB/T 4678.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 4678.13-2003 "Die-casting mould parts Part 13: Push-plate washers".

The main technical changes in this section compared with GB/T 4678.13-2003 are as follows.

--- Modified the unsurfaced roughness value in Figure 1, modified from Ra6.3µm to Ra3.2µm;

--- Change the h tolerance requirement in Table 1 to be marked in Figure 1;

--- Table 1 D1 value 32 is modified to 30, h value 5 is modified to 6, in line with other parts of the standard;

--- Modified the material hardness value, modified from hardness 40HRC~45HRC to 28HRC~32HRC.

1 Scope

This part of GB/T 4678 specifies the structural type and dimensions, requirements, materials and markings of push-plate gaskets for die-casting moulds. This section applies to push plate washers for die-casting molds.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 4679 Die Casting Parts Technical Conditions

3 Structure type and size

The structure of the push plate washer is shown in Figure 1, and the dimensions are shown in Table 1.

The unit is mm Not marked chamfer 1 × 45 °; The surface roughness value is in microns;

The surface roughness value of the unfilled surface was Ra 3.2 µm.