Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of high-purity fine-grain pure copper material for charge liners

A high-purity, medicine-shaped mask technology, which is applied in the field of preparation of high-purity fine-grained pure copper materials for medicine-shaped masks, can solve problems such as uneven grain size and many impurity elements, and achieve stable material performance and high material yield. The effect of high rate and high production efficiency

Active Publication Date: 2018-04-27
NO 59 RES INST OF CHINA ORDNANCE IND
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commercial pure copper materials such as TU1, T2, and T2A are not developed according to the special performance of the drug-type cover, and the penetration ability is affected by many impurity elements and uneven grain size.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high-purity fine-grain pure copper material for charge liners
  • Preparation method of high-purity fine-grain pure copper material for charge liners
  • Preparation method of high-purity fine-grain pure copper material for charge liners

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a high-purity fine-grained pure copper material for a drug-type cover is carried out according to the following steps:

[0032] (1) Preparation of blanks: commercial T2 pure copper rods are used, the size specification is φ120mm, and the average grain size is about 250μm (such as figure 1 ), the content of impurity elements is shown in Table 1. Use sawing to cut the material to a length of 500mm to remove oxides and oil on the surface.

[0033] Table 1 Content of impurity elements in T2 copper rods

[0034] Grade

P

Bi

Sb

As

Fe

Ni

sn

S

0

Pb

Zn

sum

T2

60

40

30

20

50

200

20

40

380

120

40

1000

[0035] (2) Vacuum electron beam melting: use an electron beam melting furnace with a power of 900kw for secondary electron beam melting and purification, the copper crystallizer is φ250mm, and the vacuum degree of the melting chamber is ≥2×10 -3 Pa, the pri...

Embodiment 2

[0044] A preparation method of a high-purity fine-grained pure copper material for a drug-type cover is carried out according to the following steps:

[0045] (1) Preparation of the billet: commercial T3 pure copper rods are used, the size specification is φ90mm, and the average grain size is about 130μm (such as image 3 ), the content of impurity elements is shown in Table 3. Use sawing to cut the material to a length of 800mm to remove oxides and oil stains on the surface.

[0046] Table 3 The content of impurity elements in T3 copper rods (×10 -6 )

[0047]

[0048]

[0049] (2) Vacuum electron beam melting: use an electron beam melting furnace with a power of 900kw for secondary electron beam melting and purification, the copper crystallizer is φ250mm, and the vacuum degree of the melting chamber is ≥2×10 -3 Pa, the primary smelting speed is 80kg / h, the ingot rotating and drawing speed is 2mm / min; the secondary melting speed is 100kg / h, and the ingot rotating and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
tensile strengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a high-purity fine-grain pure copper material for charge liners. The preparation method comprises the steps of smelting and recrystallizing heat treatment, wherein smelting belongs to vacuum electron-beam smelting, and the vacuum degree is greater than or equal to 2*10<-3>Pa. The pure copper material prepared through the method is low in impurity content, fine and uniform in crystal grain, good in performance consistency and capable of remarkably improving the penetration performance of the armor penetration warhead charge liners.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a method for preparing a high-purity fine-grained pure copper material for a drug-type cover. Background technique [0002] Foreign research institutions have done a lot of in-depth research on the relationship between the drug-type cover material, internal organization (grain size, morphology, grain boundary, etc.), manufacturing process and armor-piercing performance. The results show that the drug-mask material, grain size, grain orientation and other intrinsic performance parameters have a significant impact on the penetration ability, and the impurity elements and grain size of the drug-mask material are the key factors affecting the internal quality of the penetration performance. [0003] Copper has a history of more than 50 years as the drug-type cover of the shaped charge warhead. 98% of the existing armor-piercing warheads use copper drug-type covers. Or the dr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/22C22B15/14C22F1/08
CPCC22B9/228C22B15/00C22F1/08
Inventor 陈强舒大禹赵强屈俊岑黄树海张帷赵祖德
Owner NO 59 RES INST OF CHINA ORDNANCE IND