A hot pressing and sintering manufacturing process of polycrystalline diamond wire drawing die

A technology of polycrystalline diamond and hot pressing sintering, which is applied in the field of wire drawing dies, can solve the problems of service life and mold repairs that cannot satisfy people, and achieve the effects of shortening sintering time, improving utilization rate, and increasing the number of repairable times

Inactive Publication Date: 2018-03-27
天长市天屹模具科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molds in the prior art can not reach the satisfactory level in terms of the utilization rate of the mold core, service life and mold repair.

Method used

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  • A hot pressing and sintering manufacturing process of polycrystalline diamond wire drawing die
  • A hot pressing and sintering manufacturing process of polycrystalline diamond wire drawing die
  • A hot pressing and sintering manufacturing process of polycrystalline diamond wire drawing die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1. Mix the metal powders evenly according to the mass proportion listed in Example 1 in Table 1;

[0040] S2, the steel sleeve is placed in the lower cavity of the upper mold 1, and then the cylinder of the lower mold 2 is placed in the lower cavity of the upper mold 1, so that the steel sleeve is installed between the upper mold 1 and the lower mold 2;

[0041] S3. Weigh the metal powder prepared in unit A S1 and pour it into the steel sleeve, vibrate the graphite mold to make the metal powder even and smooth, insert the graphite pressure column from the upper cavity into the upper mold 1, as figure 2 As shown, the graphite pressing column presses the metal powder, put the combination of upper mold 1, lower mold 2, steel sleeve, metal powder and graphite pressing column into the sintering machine, and press the metal powder on the sintering machine with a pressure of 3.0MPa. Solid, compacted metal powder forms the bottom of the insert;

[0042] S4. Stick the polycry...

Embodiment 2

[0048] S1, mix each metal powder evenly according to the mass proportion listed in Example 2 in Table 1;

[0049] S2, the steel sleeve is placed in the lower cavity of the upper mold 1, and then the cylinder of the lower mold 2 is placed in the lower cavity of the upper mold 1, so that the steel sleeve is installed between the upper mold 1 and the lower mold 2;

[0050] S3. Weigh the metal powder prepared in unit A S1 and pour it into the steel sleeve, vibrate the graphite mold to make the metal powder even and smooth, insert the graphite pressure column from the upper cavity into the upper mold 1, as figure 2 As shown, the graphite pressing column presses the metal powder, put the combination of upper mold 1, lower mold 2, steel sleeve, metal powder and graphite pressing column into the sintering machine, and press the metal powder on the sintering machine with a pressure of 2.5 MPa. Solid, compacted metal powder forms the bottom of the insert;

[0051] S4. Stick the polycr...

Embodiment 3

[0057] S1, mix each metal powder evenly according to the mass proportion listed in Example 3 in Table 1;

[0058] S2, the steel sleeve is placed in the lower cavity of the upper mold 1, and then the cylinder of the lower mold 2 is placed in the lower cavity of the upper mold 1, so that the steel sleeve is installed between the upper mold 1 and the lower mold 2;

[0059] S3. Weigh the metal powder prepared in unit A S1 and pour it into the steel sleeve, vibrate the graphite mold to make the metal powder even and smooth, insert the graphite pressure column from the upper cavity into the upper mold 1, as figure 2 As shown, the graphite pressing column presses the metal powder, put the combination of upper mold 1, lower mold 2, steel sleeve, metal powder and graphite pressing column into the sintering machine, and press the metal powder on the sintering machine with a pressure of 2.5 MPa. Solid, compacted metal powder forms the bottom of the insert;

[0060] S4. Stick the polycr...

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PUM

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Abstract

The invention discloses a hot pressing and sintering manufacturing process of a polycrystalline diamond wire drawing die. The metal powder used includes, by mass percentage: 34-37wt% iron powder, 20-25wt% nickel powder, and 15-19wt% copper powder , 8‑10wt% aluminum powder, 8‑10wt% zinc powder, 1‑2wt% tin powder, 1‑2wt% magnesium powder, 2‑3wt% silver powder, 1‑2wt% phosphorus powder, 2‑ 3wt% zinc-30wt% aluminum master alloy powder. The invention improves the comprehensive performance of the wire drawing die set, so that its compressive strength, hardness, bending strength, impact toughness and wear resistance are all significantly improved. When the die is produced, it can effectively reduce the embrittlement of the die core in the sintering process, Improve the utilization rate of the mold core; during the use of the mold, it can reduce the wear of the mold by hard wire drawing, prolong the service life of the mold, improve the quality of silk products, and reduce the production cost of the enterprise.

Description

technical field [0001] The invention relates to the technical field of wire drawing dies, in particular to a hot pressing and sintering manufacturing process of polycrystalline diamond wire drawing dies. Background technique [0002] In metal pressure processing, the metal is forced to pass through the mold under the action of external force, the metal cross-sectional area is compressed, and the tool that obtains the required cross-sectional area, shape and size is called a wire drawing die, which is a kind of wire drawing die. From thick to thin, the tool gradually reaches the size required by people. It is composed of two parts: the mold sleeve and the mold core. During use, the mold will be damaged to varying degrees due to the effect of drawing. Good quality molds It is very important to improve the production efficiency of the enterprise and reduce the cost of the enterprise. In order to reduce the cost, obtain stable and long-term drawing, accurate size, and better sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/14B22F3/16B22F1/00B22F5/10C22C30/06
Inventor 朱家德王子尊许会子房如勤
Owner 天长市天屹模具科技发展有限公司
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