GB/T 4678.12-2018 English PDF

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GB/T 4678.12-2018: Die casting dies -- Components -- Part 12: Return pins
Status: Valid

GB/T 4678.12: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4678.12-2018	119	Add to Cart	3 days	Die casting dies -- Components -- Part 12: Return pins	Valid
GB/T 4678.12-2003	199	Add to Cart	2 days	Die-casting die components -- Part 12: Return pin	Obsolete
GB/T 4678.12-1984	199	Add to Cart	2 days	Die-cast die components--Return pins	Obsolete

Similar standards

GB/T 45677   GB/T 6110   JB/T 3943   GB/T 4678.20   GB/T 4678.18   GB/T 4678.17   

Basic data

Standard ID: GB/T 4678.12-2018 (GB/T4678.12-2018)
Description (Translated English): Die casting dies -- Components -- Part 12: Return pins
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J46
Classification of International Standard: 25.120.30
Word Count Estimation: 6,643
Date of Issue: 2018-09-17
Date of Implementation: 2019-04-01
Older Standard (superseded by this standard): GB/T 4678.12-2003
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 4678.12-2018: Die casting dies -- Components -- Part 12: Return pins

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Die casting dies - Components - Part 12. Return pins ICS 25.120.30 J46 National Standards of People's Republic of China Replace GB/T 4678.12-2003 Die-casting mould parts - part 12. reset rod Published on.2018-09-17 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

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 12th 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 4678.12-2003 "Die Casting Die Parts Part 12. Reset Rod". The main technical changes in this section compared with GB/T 4678.12-2003 are as follows. --- Added normative reference documents GB/T 1801-2009; --- Modified the unsurfaced roughness value in Figure 1, modified from Ra6.3μm to Ra3.2μm; --- Reorganize the structure of Table 1, and adjust the letter codes of D, D1, L, h, etc. in the first line of the header; --- According to the actual situation of the country, adjust the size series of D, D1, L, h in Table 1, and increase the size of D to 50mm; --- Change the tolerance of D and h in Table 1 to be marked in Figure 1; ---Recommended materials changed from T8A, T10A to GCr15, 20Cr, T10A, and the hardness requirements are adjusted accordingly; --- Modified the markup and examples and added material grades to the markup. This part is proposed and managed by the National Die Standardization Technical Committee (SAC/TC33). This section drafted by. Shenzhen Zhonghang Technology Testing Co., Ltd., Anhui Ruijie Forging Co., Ltd., Quanjiao Dongrun Electronics Technology Co., Ltd., Ningbo Longyuan Precision Machinery Co., Ltd., Xiamen Wanhuilong Industry and Trade Co., Ltd., Zhejiang Ouyi Smart Kitchen Co., Ltd. Xi'an Yuanzheng Technology Co., Ltd., Guilin Electric Apparatus Research Institute Co., Ltd. The main drafters of this section. Zhang Xumin, Lu Meilian, Xia Song, Lin Guodong, Huang Xiaoqing, Fang Zhiming, Nan Zheng, Zhu Leiwen, Wei Jufeng, Fan Changyi, Pan Shuguang. The previous versions of the standards replaced by this section are. ---GB/T 4678.12-1984, GB/T 4678.12-2003. Die-casting mould parts - part 12. reset rod

1 Scope

This part of GB/T 4678 specifies the construction type and dimensions, requirements, materials and markings of the reset rod for die casting. This section applies to the reset rod for die casting.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1801-2009 Product Geometric Specifications (GPS) Limits and fit tolerances and fits GB/T 4679 Die Casting Parts Technical Conditions

3 Structure type and size

The structure of the reset lever is shown in Figure 1, and the dimensions are shown in Table 1. The unit is mm The surface roughness value is in microns; The surface roughness value of the unfilled surface was Ra 3.2 μm. a The end face should not retain the center hole. Figure 1 reset lever Table 1 Reset rod size is in millimeters D D1 80 100 120 160.200 250 300 400 500 600 800 1000 10 16 × × × × × × 12 18 × × × × × × 16 22 × × × × × × 20 26 × × × × × × 6,8 ......

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