Hunan Boyun-Dongfang Powder Metallurgy Co., Ltd
| Payment Terms | L/C, T/T |
| Delivery Time | 10 working days |
| Product material | tungsten carbide,100% Original Carbide |
| Material | tungsten carbide |
| Product name | Customized Tungsten Carbide Punching Cold Heading Dies,cold heading die for screws and nuts |
| Application | For Scews,Nuts etc. |
| Size | Customer Size Accepted |
| Grade | MD60A |
| Surface treatment | Polishing,Ungrounded |
| Usage | For cold heading and cold punching fasteners |
| Advantage | High toughness & good wear resistance.,30years production experience in tungsten carbide field |
| Brand Name | PM |
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 10 working days |
| Product material | tungsten carbide,100% Original Carbide | Material | tungsten carbide |
| Product name | Customized Tungsten Carbide Punching Cold Heading Dies,cold heading die for screws and nuts | Application | For Scews,Nuts etc. |
| Size | Customer Size Accepted | Grade | MD60A |
| Surface treatment | Polishing,Ungrounded | Usage | For cold heading and cold punching fasteners |
| Advantage | High toughness & good wear resistance.,30years production experience in tungsten carbide field | Brand Name | PM |
| High Light | Tungsten Carbide Wire Drawing Dies ，MD60A Tungsten Carbide Wire Drawing Dies ，Carbide Wire Drawing Dies Different Size | ||
Cold Heading Dies Grade MD60A
| Grade | Co | Grain Size of WC | Hardness | Density | Flexural Strength | Bending Toughness | Elastic Modulus | Coefficient of Thermal Expansion | Application | |
| % | HRA | HV30 | g/cm3 | MPa | N/mm2 | GPa | 10-6/℃ | |||
| MD51B | 19 | medium | 85 | 940 | 13.5 | 3100 | 400 | 6.7 | Suitable for mould of shrinkage rod with large reduction in diameter | |
| MD50A | 20 | medium | 85.8 | 1020 | 13.4 | 3300 | 390 | 6.8 | Suitable for mould of shrinkage rod with small reduction in diameter | |
| MD60A | 20 | medium | 84 | 860 | 13.6 | 2900 | 390 | 6.8 | Suitable for mould to make straight rod, screws,nut etc | |
| MD61B | 22 | medium | 84 | 860 | 13.3 | 3150 | 360 | 7.1 | Suitable for heavy hardness stainless steel | |
| MD62B | 22 | medium | 83.5 | 820 | 13.3 | 3000 | 360 | 7.1 | Suitable for dry wall screw and common stainless steel | |
| MD65A | 25 | medium | 84.1 | 870 | 12.9 | 3100 | 340 | 7.6 | Suitable for heavy loads straight rod moulds | |
| MD70A | 25 | medium | 82.5 | 760 | 13.1 | 2800 | 340 | 7.6 | Suitable for heavy loads nut moulds | |
| D | L | ||||
| ≤15 | ＞15～30 | ＞30～50 | ＞50～80 | ＞80 | |
| Deviation | |||||
| ≤Ф15 | ±0.20 | ±0.30 | ±0.40 | ||
| ＞Ф15～30 | ±0.30 | ±0.40 | ±0.50 | ±0.60 | |
| ＞Ф30～50 | ±0.50 | ±0.60 | ±0.70 | ±0.75 | ±0.80 |
| ＞Ф50～80 | ±0.70 | ±0.88 | ±0.90 | ±1.0 | |
| d | L | ||||
| ≤18 | ＞18～30 | ＞30～50 | ＞50～80 | ＞80 | |
| Deviation | |||||
| ≤Ф5 | 0～-0.40 | 0～-0.40 | 0～-0.4 | 0～-0.5 | |
| ＞Ф5～10 | 0～-0.50 | 0～-0.60 | 0～-0.70 | 0～-0.75 | |
| ＞Ф10～20 | 0～-0.70 | 0～-0.75 | 0～-0.80 | 0～-0.90 | 0～-1.00 |
| ＞Ф20～35 | 0～-0.90 | 0～-1.00 | 0～-1.10 | 0～-1.20 | |
| L | D | ||||
| ≤Ф15 | ＞Ф15～Ф30 | ＞Ф30～Ф50 | ＞Ф50～Ф80 | ||
| Deviation | |||||
| ≤15 | ﹢0.8 | ﹢1.0 | ﹢1.2 | ||
| ﹢0.3 | ﹢0.3 | ﹢0.3 | |||
| ＞15～30 | ﹢1.0 | ﹢1.2 | ﹢1.5 | ﹢1.6 | |
| ﹢0.3 | ﹢0.3 | ﹢0.3 | ﹢0.4 | ||
| ＞30～50 | ﹢1.5 | ﹢1.5 | ﹢1.8 | ﹢2.0 | |
| ﹢0.5 | ﹢0.5 | ﹢0.5 | ﹢0.5 | ||
| ＞50～80 | ﹢2.0 | ﹢2.0 | ﹢2.2 | ﹢2.5 | |
| ﹢0.5 | ﹢0.5 | ﹢0.5 | ﹢0.6 | ||
| ＞80 | ﹢3.0 | ||||
| ﹢0.6 | |||||
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
2000000-11000000
Employee Number:
200~220
Ecer Certification：
Active Member
Hunan Boyun Dongfang Powder Metallurgy Co., Ltd. was founded in 1994 by the Institute of powder metallurgy of Central South University of Technology (now the research center of powder metallurgy engineering of Central South University) and Hunan Yinzhou Co., Ltd. (now the wholly-owned membe... Hunan Boyun Dongfang Powder Metallurgy Co., Ltd. was founded in 1994 by the Institute of powder metallurgy of Central South University of Technology (now the research center of powder metallurgy engineering of Central South University) and Hunan Yinzhou Co., Ltd. (now the wholly-owned membe...
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